commit 9d1218edbfa2dd031a90b552a1d5d7d503443328
Author: Miroslav Pejic <miroslav.pejic.85@gmail.com>
Date:   Thu Sep 12 20:22:27 2024 +0200

    [call-me] - init commit

diff --git a/.env.template b/.env.template
new file mode 100644
index 0000000..b1294e9
--- /dev/null
+++ b/.env.template
@@ -0,0 +1,22 @@
+# Server
+
+SSL=false # true or false
+DOMAIN=localhost
+PORT=8000
+
+# Stun
+
+STUN_SERVER_ENABLED=true # true or false
+STUN_SERVER_URL=stun:stun.l.google.com:19302
+
+# Turn
+# Please create your own free account on: https://www.metered.ca/tools/openrelay/
+
+TURN_SERVER_ENABLED=false # true or false
+TURN_SERVER_URL=turn:a.relay.metered.ca:443
+TURN_SERVER_USERNAME=e8dd65b92c62d3e36cafb807
+TURN_SERVER_CREDENTIAL=uWdWNmkhvyqTEswO
+
+# API
+
+API_KEY_SECRET=call_me_api_key_secret # change me
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..941d536
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+.env
+node_modules
+package-lock.json
\ No newline at end of file
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 0000000..012e4f6
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,3 @@
+.github
+package-lock.json
+node_modules
diff --git a/.prettierrc.js b/.prettierrc.js
new file mode 100644
index 0000000..c8c6a54
--- /dev/null
+++ b/.prettierrc.js
@@ -0,0 +1,7 @@
+module.exports = {
+    semi: true,
+    trailingComma: 'all',
+    singleQuote: true,
+    printWidth: 120,
+    tabWidth: 4,
+};
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..dc205f5
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,21 @@
+# Use a lightweight Node.js image 
+FROM node:20-alpine
+
+# Set working directory
+WORKDIR /src
+
+# Copy package.json and .env dependencies
+COPY package.json .
+COPY .env ./.env
+
+# Install necessary system packages and dependencies
+RUN npm install \
+    && npm cache clean --force \
+    && rm -rf /tmp/* /var/tmp/* /usr/share/doc/*
+
+# Copy the application code
+COPY app app
+COPY public public
+
+# Set default command to start the application
+CMD ["npm", "start"]
\ No newline at end of file
diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 0000000..142733b
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,661 @@
+                GNU AFFERO GENERAL PUBLIC LICENSE
+                  Version 3, 19 November 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+
+                          Preamble
+
+The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate. Many developers of free software are heartened and
+encouraged by the resulting cooperation. However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community. It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server. Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals. This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+The precise terms and conditions for copying, distribution and
+modification follow.
+
+                          TERMS AND CONDITIONS
+
+0. Definitions.
+
+"This License" refers to version 3 of the GNU Affero General Public License.
+
+"Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+"The Program" refers to any copyrightable work licensed under this
+License. Each licensee is addressed as "you". "Licensees" and
+"recipients" may be individuals or organizations.
+
+To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy. The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy. Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies. Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License. If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+1. Source Code.
+
+The "source code" for a work means the preferred form of the work
+for making modifications to it. "Object code" means any non-source
+form of a work.
+
+A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form. A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities. However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work. For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+The Corresponding Source for a work in source code form is that
+same work.
+
+2. Basic Permissions.
+
+All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met. This License explicitly affirms your unlimited
+permission to run the unmodified Program. The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work. This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force. You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright. Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+Conveying under any other circumstances is permitted solely under
+the conditions stated below. Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+4. Conveying Verbatim Copies.
+
+You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+5. Conveying Modified Source Versions.
+
+You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit. Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+6. Conveying Non-Source Forms.
+
+You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling. In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage. For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product. A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+"Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source. The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information. But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed. Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+7. Additional Terms.
+
+"Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law. If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it. (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.) You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10. If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term. If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+8. Termination.
+
+You may not propagate or modify a covered work except as expressly
+provided under this License. Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License. If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+9. Acceptance Not Required for Having Copies.
+
+You are not required to accept this License in order to receive or
+run a copy of the Program. Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance. However,
+nothing other than this License grants you permission to propagate or
+modify any covered work. These actions infringe copyright if you do
+not accept this License. Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+10. Automatic Licensing of Downstream Recipients.
+
+Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License. You are not responsible
+for enforcing compliance by third parties with this License.
+
+An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations. If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License. For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+11. Patents.
+
+A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based. The
+work thus licensed is called the contributor's "contributor version".
+
+A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version. For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement). To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients. "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License. You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+12. No Surrender of Others' Freedom.
+
+If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all. For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+13. Remote Network Interaction; Use with the GNU General Public License.
+
+Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software. This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work. The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+14. Revised Versions of this License.
+
+The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time. Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+15. Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                    END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source. For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code. There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..16978c0
--- /dev/null
+++ b/README.md
@@ -0,0 +1,54 @@
+# Call-Me
+
+This project enables easy one-to-one video calls directly from your web browser using WebRTC technology.
+
+![callme](./assets/doc/callme.png)
+
+## Getting Started
+
+### Overview
+
+This project allows you to:
+
+-   `Sign in` with a username.
+-   `Make video calls` by entering the recipient's username.
+-   `Toggle` your video feed visibility.
+-   `Hang up` the call when done.
+-   `Rest API` to get all connected users.
+
+### Quick Start
+
+**[Install Node.js and npm](https://nodejs.org/en/download)**
+
+```shell
+# Copy the .env and edit if need
+cp .env.template .env
+
+# Install dependencies:
+npm install
+
+# Start the application:
+npm start
+```
+
+1. Open your browser and visit [http://localhost:8000](http://localhost:8000).
+
+2. Sign in with your username.
+
+3. Enter the recipient's username and click `Call`.
+
+4. Enjoy your one-to-one video call.
+
+## API
+
+Get all connected users
+
+```shell
+curl -X GET "http://localhost:8000/api/v1/users" -H "authorization: call_me_api_key_secret" -H "Content-Type: application/json"
+```
+
+## Self-Hosting
+
+To install this on your VPS, VDS, or personal server, please follow the instructions in **[the self-hosting documentation](./doc/self-hosting.md)**.
+
+---
diff --git a/app/api/swagger.yaml b/app/api/swagger.yaml
new file mode 100644
index 0000000..4e3a5b5
--- /dev/null
+++ b/app/api/swagger.yaml
@@ -0,0 +1,47 @@
+swagger: '2.0'
+
+info:
+    title: Call-me API
+    description: API description for external applications that integrates with Call-me.
+    version: 1.0.0
+
+basePath: /api/v1
+
+schemes:
+    - https
+    - http
+
+paths:
+    /users:
+        get:
+            tags:
+                - 'users'
+            summary: 'Connected users'
+            description: 'Get all connected users'
+            consumes:
+                - 'application/json'
+            produces:
+                - 'application/json'
+            security:
+                - secretApiKey: []
+            responses:
+                '200':
+                    description: 'Connected users'
+                    schema:
+                        $ref: '#/definitions/UsersResponse'
+                '403':
+                    description: 'Unauthorized!'
+
+securityDefinitions:
+    secretApiKey:
+        type: 'apiKey'
+        name: 'authorization'
+        in: 'header'
+        description: 'Format like this: authorization: {API_KEY_SECRET}'
+
+definitions:
+    UsersResponse:
+        type: 'object'
+        properties:
+            users:
+                type: 'array'
diff --git a/app/server.js b/app/server.js
new file mode 100755
index 0000000..9acc3f0
--- /dev/null
+++ b/app/server.js
@@ -0,0 +1,272 @@
+'use strict';
+
+// Import necessary modules
+const dotenv = require('dotenv').config();
+const express = require('express');
+const fs = require('fs');
+const http = require('http');
+const https = require('https');
+const socketIO = require('socket.io');
+const path = require('path');
+const yaml = require('js-yaml');
+const swaggerUi = require('swagger-ui-express');
+
+// Public directory location
+const PUBLIC_DIR = path.join(__dirname, '../', 'public');
+
+// Map to store connected users
+const users = new Map();
+
+// Configuration settings
+const config = {
+    iceServers: [],
+    stunServerEnabled: process.env.STUN_SERVER_ENABLED === 'true',
+    stunServerUrl: process.env.STUN_SERVER_URL,
+    turnServerEnabled: process.env.TURN_SERVER_ENABLED === 'true',
+    turnServerUrl: process.env.TURN_SERVER_URL,
+    turnServerUsername: process.env.TURN_SERVER_USERNAME,
+    turnServerCredential: process.env.TURN_SERVER_CREDENTIAL,
+    apiKeySecret: process.env.API_KEY_SECRET,
+    apiBasePath: '/api/v1',
+    swaggerDocument: yaml.load(fs.readFileSync(path.join(__dirname, '/api/swagger.yaml'), 'utf8')),
+};
+
+// Add STUN server if enabled and URL is provided
+if (config.stunServerEnabled && config.stunServerUrl) {
+    config.iceServers.push({ urls: config.stunServerUrl });
+}
+
+// Add TURN server if enabled and all required information is provided
+if (config.turnServerEnabled && config.turnServerUrl && config.turnServerUsername && config.turnServerCredential) {
+    config.iceServers.push({
+        urls: config.turnServerUrl,
+        username: config.turnServerUsername,
+        credential: config.turnServerCredential,
+    });
+}
+
+// Create Express application
+const app = express();
+
+// Server configurations
+const domain = process.env.DOMAIN || 'localhost';
+const isHttps = process.env.SSL === 'true';
+const port = process.env.PORT || 4000;
+const host = `http${isHttps ? 's' : ''}://${domain}:${port}`;
+const apiDocs = host + config.apiBasePath + '/docs';
+
+// This server
+let server;
+
+// Load self-signed certificates if HTTPS is enabled
+if (isHttps) {
+    try {
+        const options = {
+            key: fs.readFileSync(path.join(__dirname, '/ssl/key.pem'), 'utf-8'),
+            cert: fs.readFileSync(path.join(__dirname, '/ssl/cert.pem'), 'utf-8'),
+        };
+        // Create HTTPS server using Express
+        server = https.createServer(options, app);
+    } catch (err) {
+        console.error('Error loading certificates:', err);
+        process.exit(1); // Exit the process if certificates cannot be loaded
+    }
+} else {
+    // Create HTTP server using Express
+    server = http.createServer(app);
+}
+
+// Create WebSocket server using Socket.io on top of HTTP server
+const io = socketIO(server);
+
+// Start the server and listen on the specified port
+server.listen(port, () => {
+    console.log('Server', {
+        running_at: host,
+        ice: config.iceServers,
+        api_key_secret: config.apiKeySecret,
+        api_docs: apiDocs,
+    });
+});
+
+// Handle WebSocket connections
+io.on('connection', handleConnection);
+
+app.use(express.static(PUBLIC_DIR)); // Serve static files from the 'public' directory
+app.use(express.json()); // Api parse body data as json
+app.use(config.apiBasePath + '/docs', swaggerUi.serve, swaggerUi.setup(config.swaggerDocument)); // api docs
+
+// Logs requests
+app.use((req, res, next) => {
+    console.log('New request', {
+        headers: req.headers,
+        body: req.body,
+        method: req.method,
+        path: req.originalUrl,
+    });
+    next();
+});
+
+// Set up route to serve the main HTML file
+app.get('/', (req, res) => {
+    res.sendFile(path.join(PUBLIC_DIR, '/index.html'));
+});
+
+// Axios API requests
+app.get(`${config.apiBasePath}/users`, (req, res) => {
+    // check if user is authorized for the API call
+    const { authorization } = req.headers;
+    console.log(authorization);
+    if (authorization != config.apiKeySecret) {
+        console.log('Unauthorized API call: Get Users', {
+            headers: req.headers,
+            body: req.body,
+        });
+        return res.status(403).json({ error: 'Unauthorized!' });
+    }
+    // Get connected users
+    const users = getConnectedUsers();
+    return res.json({ users });
+});
+
+// Function to handle individual WebSocket connections
+function handleConnection(socket) {
+    console.log('User connected:', socket.id);
+
+    // Send a ping message to the newly connected client
+    sendPing(socket);
+
+    // Set up event listeners for incoming messages and disconnect
+    socket.on('message', handleMessage);
+    socket.on('disconnect', handleClose);
+
+    // Function to handle incoming messages
+    function handleMessage(data) {
+        const { type } = data;
+
+        console.log('Received message:', type);
+
+        switch (type) {
+            case 'signIn':
+                handleSignIn(data);
+                break;
+            case 'offerAccept':
+            case 'offerDecline':
+            case 'offerCreate':
+                handleOffer(data);
+                break;
+            case 'offer':
+            case 'answer':
+            case 'candidate':
+            case 'leave':
+                handleSignalingMessage(data);
+                break;
+            case 'pong':
+                console.log('Client response:', data.message);
+                break;
+            default:
+                sendError(socket, `Unknown command: ${type}`);
+                break;
+        }
+    }
+
+    // Send a ping message to the newly connected client and iceServers for peer connection
+    function sendPing(socket) {
+        sendMsgTo(socket, {
+            type: 'ping',
+            message: 'Hello Client!',
+            iceServers: config.iceServers,
+        });
+    }
+
+    // Function to handle user sign-in request
+    function handleSignIn(data) {
+        const { name } = data;
+        if (!users.has(name)) {
+            users.set(name, socket);
+            socket.username = name;
+            console.log('User signed in:', name);
+            sendMsgTo(socket, { type: 'signIn', success: true });
+            console.log('Users', getConnectedUsers());
+        } else {
+            sendMsgTo(socket, { type: 'signIn', success: false, message: 'Username already in use' });
+        }
+    }
+
+    // Function to handle offer request
+    function handleOffer(data) {
+        console.log('handleOffer', data);
+
+        const { from, to, name, type } = data;
+        const toName = type === 'offerAccept' ? to : from;
+        const recipientSocket = users.get(toName);
+
+        console.log(`Handling offer for ${toName}`);
+
+        switch (type) {
+            case 'offerAccept':
+            case 'offerCreate':
+                if (recipientSocket) {
+                    sendMsgTo(recipientSocket, data);
+                } else {
+                    console.warn(`Recipient (${toName}) not found`);
+                    sendError(socket, `User ${toName} not found`);
+                }
+                break;
+            case 'offerDecline':
+                console.warn(`User ${name} declined your call`);
+                sendError(recipientSocket || socket, `User ${name} declined your call`);
+                break;
+            default:
+                console.warn(`Unknown offer type: ${type}`);
+                break;
+        }
+    }
+
+    // Function to handle signaling messages (offer, answer, candidate, leave)
+    function handleSignalingMessage(data) {
+        const { name } = data;
+        const recipientSocket = users.get(name);
+        if (recipientSocket) {
+            sendMsgTo(recipientSocket, { ...data, name: socket.username });
+        } else {
+            sendError(socket, `User ${name} not found`);
+        }
+    }
+
+    // Function to handle the closing of a connection
+    function handleClose() {
+        if (socket.username) {
+            console.log('User disconnected:', socket.username);
+            users.delete(socket.username);
+            const recipientSocket = users.get(socket.recipient);
+            if (recipientSocket) {
+                sendMsgTo(recipientSocket, { type: 'leave' });
+            }
+            console.log('Users', getConnectedUsers());
+        }
+    }
+}
+
+// Function to get all connected users
+function getConnectedUsers() {
+    return Array.from(users.keys());
+}
+
+// Function to broadcast a message to all connection
+function broadcastMsg(socket, message) {
+    console.log('Broadcast message:', message.type);
+    socket.broadcast.emit('message', message);
+}
+
+// Function to send a message to a specific connection
+function sendMsgTo(socket, message) {
+    console.log('Sending message:', message.type);
+    socket.emit('message', message);
+}
+
+// Function to send an error message to a specific connection
+function sendError(socket, message) {
+    console.error('Error:', message);
+    sendMsgTo(socket, { type: 'error', message: message });
+}
diff --git a/app/ssl/README.md b/app/ssl/README.md
new file mode 100644
index 0000000..2025dbb
--- /dev/null
+++ b/app/ssl/README.md
@@ -0,0 +1,27 @@
+## Call-me SSL
+
+![call-me-https](https.png)
+
+1. Generate a [self-signed certificate](https://en.wikipedia.org/wiki/Self-signed_certificate)
+
+```bash
+# install openssl 4 ubuntu
+apt install openssl
+
+# install openssl 4 mac
+brew install openssl
+
+# self-signed certificate
+openssl genrsa -out key.pem
+openssl req -new -key key.pem -out csr.pem
+openssl x509 -req -days 9999 -in csr.pem -signkey key.pem -out cert.pem
+rm csr.pem
+
+# https://www.sslchecker.com/certdecoder
+```
+
+2. Expose `server.js` on `https` using the `self-signed certificate`, edit the `.env` file
+
+```bash
+SSL=true
+```
diff --git a/app/ssl/cert.pem b/app/ssl/cert.pem
new file mode 100644
index 0000000..2d5174c
--- /dev/null
+++ b/app/ssl/cert.pem
@@ -0,0 +1,21 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/app/ssl/https.png b/app/ssl/https.png
new file mode 100644
index 0000000..467dbde
Binary files /dev/null and b/app/ssl/https.png differ
diff --git a/app/ssl/key.pem b/app/ssl/key.pem
new file mode 100644
index 0000000..0babd4a
--- /dev/null
+++ b/app/ssl/key.pem
@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
diff --git a/assets/.DS_Store b/assets/.DS_Store
new file mode 100644
index 0000000..9b4ce52
Binary files /dev/null and b/assets/.DS_Store differ
diff --git a/assets/app/1.png b/assets/app/1.png
new file mode 100644
index 0000000..07ceaff
Binary files /dev/null and b/assets/app/1.png differ
diff --git a/assets/app/2.png b/assets/app/2.png
new file mode 100644
index 0000000..3fa620d
Binary files /dev/null and b/assets/app/2.png differ
diff --git a/assets/app/3.png b/assets/app/3.png
new file mode 100644
index 0000000..131495e
Binary files /dev/null and b/assets/app/3.png differ
diff --git a/assets/app/4.png b/assets/app/4.png
new file mode 100644
index 0000000..36bc456
Binary files /dev/null and b/assets/app/4.png differ
diff --git a/assets/doc/apache.png b/assets/doc/apache.png
new file mode 100644
index 0000000..b489b19
Binary files /dev/null and b/assets/doc/apache.png differ
diff --git a/assets/doc/callme.png b/assets/doc/callme.png
new file mode 100644
index 0000000..36bc456
Binary files /dev/null and b/assets/doc/callme.png differ
diff --git a/assets/doc/docker.png b/assets/doc/docker.png
new file mode 100644
index 0000000..db8cb8b
Binary files /dev/null and b/assets/doc/docker.png differ
diff --git a/assets/doc/logo.png b/assets/doc/logo.png
new file mode 100644
index 0000000..4d41f49
Binary files /dev/null and b/assets/doc/logo.png differ
diff --git a/assets/doc/nginx.png b/assets/doc/nginx.png
new file mode 100644
index 0000000..f59edfb
Binary files /dev/null and b/assets/doc/nginx.png differ
diff --git a/assets/doc/pm2.png b/assets/doc/pm2.png
new file mode 100644
index 0000000..70a1a6f
Binary files /dev/null and b/assets/doc/pm2.png differ
diff --git a/doc/self-hosting.md b/doc/self-hosting.md
new file mode 100644
index 0000000..b25dc0f
--- /dev/null
+++ b/doc/self-hosting.md
@@ -0,0 +1,290 @@
+# Call-me - Self Hosting
+
+![logo](../assets/doc/logo.png)
+
+## Requirements
+
+-   Server Selection:
+    -   [Hetzner](https://www.hetzner.com/cloud) (CX11) - Use [this link](https://hetzner.cloud/?ref=XdRifCzCK3bn) to receive `€⁠20 in cloud credits`
+    -   [Contabo](https://www.dpbolvw.net/click-101027391-14462707) (VPS-0)
+-   OS: Ubuntu 22.04 LTS.
+-   [Node.js](https://nodejs.org/en/) (LTS) and npm
+-   Domain or Subdomain Name (e.g., `YOUR.DOMAIN.NAME`) with a DNS A record pointing to your server's IPv4 address.
+-   `Recommend` utilizing a [Turn Server](../coturn/stun-turn.md) the installation documentation accessible [here](https://docs.mirotalk.com/coturn/installation/).
+
+---
+
+## Installation
+
+Install `NodeJS 18.X` and `npm` using [Node Version Manager](https://docs.mirotalk.com/nvm/nvm/)
+
+---
+
+## Quick start
+
+```bash
+# Install dependencies
+$ npm install
+
+# Start the server
+$ npm start
+```
+
+Check if is correctly installed: [http://YOUR.DOMAIN.NAME:8000](http://YOUR.DOMAIN.NAME:8000)
+
+---
+
+## Using [PM2](https://pm2.keymetrics.io) (Process Manager)
+
+![pm2](../assets/doc/pm2.png)
+
+```bash
+# Install pm2
+$ npm install -g pm2
+
+# Start the server
+$ pm2 start app/server.js
+
+# Takes a snapshot
+$ pm2 save
+
+# Add it on startup
+$ pm2 startup
+```
+
+---
+
+## Using Docker
+
+![docker](../assets/doc/docker.png)
+
+```bash
+# Install docker
+$ sudo apt install -y docker.io
+
+# Instal docker-compose
+$ sudo apt install -y docker-compose
+
+# Build the docker image
+$ docker build -t call/me . # --load
+
+# Create and start containers (-d as daemon)
+$ docker-compose up
+```
+
+Check if is correctly installed: [http://YOUR.DOMAIN.NAME:8000](http://YOUR.DOMAIN.NAME:8000)
+
+---
+
+## Configuring Nginx & Certbot
+
+![nginx](../assets/doc/nginx.png)
+
+In order to use it without the port number and to have encrypted communications (`mandatory to make it work correctly`), we going to install **[nginx](https://www.nginx.com)** and **[certbot](https://certbot.eff.org)**
+
+```bash
+# Install Nginx
+$ sudo apt-get install -y nginx
+
+# Install Certbot (SSL certificates)
+$ sudo apt install -y snapd
+$ sudo snap install core; sudo snap refresh core
+$ sudo snap install --classic certbot
+$ sudo ln -s /snap/bin/certbot /usr/bin/certbot
+
+# Configure Nginx
+$ sudo vim /etc/nginx/sites-enabled/default
+```
+
+Add the following:
+
+```bash
+# HTTP — redirect all traffic to HTTPS
+server {
+    listen 80;
+    listen [::]:80;
+    server_name YOUR.DOMAIN.NAME;
+
+    return 301 https://$host$request_uri;
+}
+```
+
+```bash
+# Test Nginx configuration
+$ sudo nginx -t
+
+# Enable HTTPS with Certbot (follow the instruction)
+$ sudo certbot certonly --nginx
+
+# Add Let's Encrypt configuration to Nginx
+$ sudo vim /etc/nginx/sites-enabled/default
+```
+
+Add the following:
+
+```bash
+# CallMe - HTTPS — proxy all requests to the Node app
+server {
+    # Enable HTTP/2
+    listen 443 ssl http2;
+    listen [::]:443 ssl http2;
+    server_name YOUR.DOMAIN.NAME;
+
+    # Use the Let’s Encrypt certificates
+    ssl_certificate /etc/letsencrypt/live/YOUR.DOMAIN.NAME/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/YOUR.DOMAIN.NAME/privkey.pem;
+
+    location / {
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header Host $host;
+        proxy_pass http://localhost:8000/;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+    }
+}
+```
+
+```bash
+# Test Nginx configuration again
+$ sudo nginx -t
+
+# Restart nginx
+$ service nginx restart
+$ service nginx status
+
+# Set up auto-renewal for SSL certificates
+$ sudo certbot renew --dry-run
+
+# Show certificates
+$ sudo certbot certificates
+```
+
+Check Your CallMe instance: [https://YOUR.DOMAIN.NAME](https://YOUR.DOMAIN.NAME)
+
+---
+
+## Apache Virtual Host (Alternative to Nginx)
+
+![apache](../assets/doc/apache.png)
+
+If you prefer `Apache`, configure it with the equivalent settings provided in this guide.
+
+```bash
+# Edit the apache sites
+vim /etc/apache2/sites-enabled/YOUR.DOMAIN.NAME.conf
+```
+
+Add the following:
+
+```bash
+# HTTP — redirect all traffic to HTTPS
+<VirtualHost *:80>
+    ServerName YOUR.DOMAIN.NAME
+    Redirect permanent / https://YOUR.DOMAIN.NAME
+</VirtualHost>
+
+# CallMe - HTTPS — proxy all requests to the Node app
+<VirtualHost *:443>
+    ServerName YOUR.DOMAIN.NAME
+
+    # SSL Configuration
+    SSLEngine on
+    SSLCertificateFile /etc/letsencrypt/live/YOUR.DOMAIN.NAME/fullchain.pem
+    SSLCertificateKeyFile /etc/letsencrypt/live/YOUR.DOMAIN.NAME/privkey.pem
+    Include /etc/letsencrypt/options-ssl-apache.conf
+
+    # Enable HTTP/2 support
+    Protocols h2 http/1.1
+
+    <Location />
+        # Proxy Configuration for Node.js App
+        ProxyPass http://localhost:8000/
+        ProxyPassReverse http://localhost:8000/
+
+        ProxyPreserveHost On
+
+        RequestHeader set X-Forwarded-For "%{REMOTE_ADDR}s"
+        RequestHeader set X-Forwarded-Proto "https"
+        RequestHeader set Host "%{HTTP_HOST}s"
+
+        # Enable WebSocket proxy support for Socket.IO
+        RewriteEngine On
+        RewriteCond %{HTTP:Upgrade} =websocket [NC]
+        RewriteRule /(.*) ws://localhost:8000/socket.io/$1 [P,L]
+        # Adjust the WebSocket path according to your Socket.IO configuration
+        # For Socket.IO 3.x or higher, use /socket.io/?EIO=4&transport=websocket
+    </Location>
+</VirtualHost>
+```
+
+```bash
+# Check configuration
+sudo apache2ctl configtest
+
+sudo a2enmod proxy # Enables the `mod_proxy` module, which is essential for proxying HTTP and WebSocket connections.
+sudo a2enmod proxy_http # Enables the `mod_proxy_http` module, which adds support for proxying HTTP connections.
+sudo a2enmod proxy_wstunnel # Enables the `mod_proxy_wstunnel` module, which provides support for tunneling WebSocket connections
+
+# Restart apache
+sudo systemctl restart apache2
+```
+
+---
+
+## Updating Your Instance
+
+To keep your CallMe instance up to date, create an update script:
+
+```bash
+cd
+# Create a file p2pUpdate.sh
+$ vim callmeUpdate.sh
+```
+
+---
+
+For `PM2`:
+
+```bash
+#!/bin/bash
+
+cd callme
+pm2 stop app/server.js
+sudo npm install
+pm2 start app/server.js
+```
+
+---
+
+For `Docker`:
+
+```bash
+#!/bin/bash
+
+cd callme
+docker-compose down
+docker build -t call/me . # --load
+docker images |grep '<none>' |awk '{print $3}' |xargs docker rmi
+docker-compose up -d
+```
+
+---
+
+Make the script executable
+
+```bash
+$ chmod +x callmeUpdate.sh
+```
+
+To update your CallMe instance to the latest version, follow these steps:
+
+1. Replace the existing `callme` folder with the newest version
+
+```bash
+scp -r /path/to/local/folder username@remote_host:/path/to/remote/folder
+```
+
+2. Run the update script `./callmeUpdate.sh`
+
+---
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..c12683d
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,17 @@
+version: '3'
+
+services:
+    callme:
+        image: call/me:latest
+        build:
+            context: .
+            dockerfile: Dockerfile
+        container_name: callme
+        hostname: callme
+        volumes:
+            - .env:/src/.env:ro
+            - ./app/:/src/app/:ro
+            - ./public/:/src/public/:ro
+        restart: unless-stopped
+        ports:
+            - '${PORT}:${PORT}'
diff --git a/package.json b/package.json
new file mode 100755
index 0000000..38b6fa1
--- /dev/null
+++ b/package.json
@@ -0,0 +1,23 @@
+{
+    "name": "callme",
+    "version": "1.0.2",
+    "description": "callme",
+    "author": "Miroslav Pejic - miroslav.pejic.85@gmail.com",
+    "license": "AGPLv3",
+    "scripts": {
+        "start": "node app/server.js",
+        "dev": "nodemon app/server.js",
+        "lint": "npx prettier --write ."
+    },
+    "dependencies": {
+        "dotenv": "^16.4.5",
+        "express": "^5.0.0",
+        "js-yaml": "4.1.0",
+        "socket.io": "^4.7.5",
+        "swagger-ui-express": "5.0.1"
+    },
+    "devDependencies": {
+        "nodemon": "^3.1.4",
+        "prettier": "3.3.3"
+    }
+}
diff --git a/public/.DS_Store b/public/.DS_Store
new file mode 100644
index 0000000..c328838
Binary files /dev/null and b/public/.DS_Store differ
diff --git a/public/assets/notify.wav b/public/assets/notify.wav
new file mode 100644
index 0000000..453a38d
Binary files /dev/null and b/public/assets/notify.wav differ
diff --git a/public/assets/ring.png b/public/assets/ring.png
new file mode 100644
index 0000000..0bf59b4
Binary files /dev/null and b/public/assets/ring.png differ
diff --git a/public/assets/ring.wav b/public/assets/ring.wav
new file mode 100644
index 0000000..b37d90e
Binary files /dev/null and b/public/assets/ring.wav differ
diff --git a/public/background.jpg b/public/background.jpg
new file mode 100644
index 0000000..7116f49
Binary files /dev/null and b/public/background.jpg differ
diff --git a/public/client.js b/public/client.js
new file mode 100755
index 0000000..96e7511
--- /dev/null
+++ b/public/client.js
@@ -0,0 +1,357 @@
+'use strict';
+
+// This user agent
+const userAgent = navigator.userAgent;
+
+// WebSocket connection to the signaling server
+const socket = io();
+
+// WebRTC configuration
+const config = { iceServers: [{ urls: 'stun:stun.l.google.com:19302' }] };
+
+// DOM elements
+const signInPage = document.querySelector('#signInPage');
+const usernameIn = document.querySelector('#usernameIn');
+const signInBtn = document.querySelector('#signInBtn');
+const roomPage = document.querySelector('#roomPage');
+const callUsernameIn = document.querySelector('#callUsernameIn');
+const callBtn = document.querySelector('#callBtn');
+const hideBtn = document.querySelector('#hideBtn');
+const hangUpBtn = document.querySelector('#hangUpBtn');
+const localVideoContainer = document.querySelector('#localVideoContainer');
+const localVideo = document.querySelector('#localVideo');
+const localUsername = document.querySelector('#localUsername');
+const remoteVideo = document.querySelector('#remoteVideo');
+
+// User and connection information
+let userName;
+let connectedUser;
+let thisConnection;
+let stream;
+
+// Hide room page initially
+roomPage.style.display = 'none';
+
+// WebSocket event listeners
+socket.on('connect', handleSocketConnect);
+socket.on('message', handleMessage);
+socket.on('error', handleSocketError);
+
+// Handle WebSocket connection establishment
+function handleSocketConnect() {
+    console.log('Connected to the signaling server');
+}
+
+// Handle WebSocket errors
+function handleSocketError(err) {
+    handleError('Socket error', err.message);
+}
+
+// Handle incoming messages based on type
+function handleMessage(data) {
+    const { type } = data;
+
+    console.log('Got message', type);
+
+    switch (type) {
+        case 'ping':
+            handlePing(data);
+            break;
+        case 'signIn':
+            handleSignIn(data);
+            break;
+        case 'notfound':
+            handleNotFound(data);
+            break;
+        case 'offerAccept':
+            offerAccept(data);
+            break;
+        case 'offerCreate':
+            offerCreate();
+            break;
+        case 'offer':
+            handleOffer(data);
+            break;
+        case 'answer':
+            handleAnswer(data);
+            break;
+        case 'candidate':
+            handleCandidate(data);
+            break;
+        case 'leave':
+            handleLeave();
+            break;
+        case 'error':
+            handleError(data.message, data.message);
+            break;
+        default:
+            break;
+    }
+}
+
+// Event listeners
+signInBtn.addEventListener('click', handleSignInClick);
+callBtn.addEventListener('click', handleCallClick);
+hideBtn.addEventListener('click', toggleLocalVideo);
+hangUpBtn.addEventListener('click', handleHangUpClick);
+
+// Handle sign-in button click
+function handleSignInClick() {
+    userName = usernameIn.value;
+    if (userName.length > 0) {
+        sendMsg({
+            type: 'signIn',
+            name: userName,
+        });
+    }
+}
+
+// Handle call button click
+function handleCallClick() {
+    const callToUsername = callUsernameIn.value;
+    if (callToUsername.length > 0) {
+        if (callToUsername === userName) {
+            handleError('You cannot call yourself.');
+            return;
+        }
+        connectedUser = callToUsername;
+        sendMsg({
+            type: 'offerAccept',
+            from: userName,
+            to: callToUsername,
+        });
+    } else {
+        handleError('Please enter a username to call.');
+    }
+}
+
+// Toggle local video visibility
+function toggleLocalVideo() {
+    localVideoContainer.classList.toggle('hide');
+}
+
+// Handle hang-up button click
+function handleHangUpClick() {
+    sendMsg({ type: 'leave' });
+    handleLeave();
+}
+
+// Handle ping message from the server
+function handlePing(data) {
+    const { iceServers } = data;
+    if (iceServers) {
+        config.iceServers = iceServers;
+    }
+    sendMsg({
+        type: 'pong',
+        message: {
+            client: 'Hello Server!',
+            agent: userAgent,
+        },
+    });
+}
+
+// Handle user not found from the server
+function handleNotFound(data) {
+    const { username } = data;
+    callUsernameIn.value = '';
+    handleError(`Username ${username} not found!`);
+}
+
+// Handle sign-in response from the server
+function handleSignIn(data) {
+    const { success } = data;
+    if (!success) {
+        handleError('Username already in use. Try a different username.');
+    } else {
+        signInPage.style.display = 'none';
+        roomPage.style.display = 'block';
+
+        navigator.mediaDevices
+            .getUserMedia({ video: true, audio: true })
+            .then((myStream) => {
+                stream = myStream;
+                localVideo.srcObject = stream;
+                localVideo.playsInline = true;
+                localVideo.autoplay = true;
+                localVideo.muted = true;
+                localVideo.volume = 0;
+                localVideo.controls = false;
+                localUsername.innerText = userName;
+                initializeConnection();
+            })
+            .catch((error) => {
+                handleError('Failed to access camera and microphone.', error);
+            });
+    }
+}
+
+// Initialize WebRTC connection
+function initializeConnection() {
+    thisConnection = new RTCPeerConnection(config);
+
+    stream.getTracks().forEach((track) => thisConnection.addTrack(track, stream));
+
+    thisConnection.ontrack = (e) => {
+        if (e.streams && e.streams[0]) {
+            remoteVideo.srcObject = e.streams[0];
+            remoteVideo.playsInline = true;
+            remoteVideo.autoplay = true;
+            remoteVideo.controls = false;
+            console.log('Remote stream set to video element');
+        } else {
+            handleError('No stream available in the ontrack event.');
+        }
+    };
+
+    thisConnection.onicecandidate = (event) => {
+        if (event.candidate) {
+            sendMsg({
+                type: 'candidate',
+                candidate: event.candidate,
+            });
+        }
+    };
+
+    // For debugging purposes
+    thisConnection.onconnectionstatechange = (event) => {
+        console.log('Connection state change:', thisConnection.connectionState);
+    };
+
+    thisConnection.oniceconnectionstatechange = (event) => {
+        console.log('ICE connection state change:', thisConnection.iceConnectionState);
+    };
+}
+
+// Create and send an offer
+function offerCreate() {
+    if (!thisConnection) {
+        initializeConnection();
+    }
+    thisConnection
+        .createOffer()
+        .then((offer) => {
+            thisConnection.setLocalDescription(offer);
+            sendMsg({
+                type: 'offer',
+                offer,
+            });
+            callUsernameIn.style.display = 'none';
+        })
+        .catch((error) => {
+            handleError('Error when creating an offer.', error);
+        });
+}
+
+// Accept incoming offer
+function offerAccept(data) {
+    sound('ring');
+    Swal.fire({
+        position: 'center',
+        //icon: 'question',
+        imageUrl: 'assets/ring.png',
+        text: 'Do you want to accept call from ' + data.from + ' ?',
+        showDenyButton: true,
+        confirmButtonText: `Yes`,
+        denyButtonText: `No`,
+        showClass: { popup: 'animate__animated animate__fadeInDown' },
+        hideClass: { popup: 'animate__animated animate__fadeOutUp' },
+    }).then((result) => {
+        if (result.isConfirmed) {
+            callUsernameIn.style.display = 'none';
+            callBtn.style.display = 'none';
+            data.type = 'offerCreate';
+        } else {
+            data.type = 'offerDecline';
+        }
+        sendMsg({ ...data });
+    });
+}
+
+// Handle incoming offer
+function handleOffer(data) {
+    const { offer, name } = data;
+    connectedUser = name;
+    initializeConnection();
+    thisConnection.setRemoteDescription(new RTCSessionDescription(offer));
+    thisConnection
+        .createAnswer()
+        .then((answer) => {
+            thisConnection.setLocalDescription(answer);
+            sendMsg({
+                type: 'answer',
+                answer,
+            });
+        })
+        .catch((error) => {
+            handleError('Error when creating an answer.', error);
+        });
+}
+
+// Handle incoming answer
+function handleAnswer(data) {
+    const { answer } = data;
+    thisConnection.setRemoteDescription(new RTCSessionDescription(answer)).catch((error) => {
+        handleError('Error when set remote description.', error);
+    });
+}
+
+// Handle incoming ICE candidate
+function handleCandidate(data) {
+    const { candidate } = data;
+    callBtn.style.display = 'none';
+    thisConnection.addIceCandidate(new RTCIceCandidate(candidate)).catch((error) => {
+        handleError('Error when add ice candidate.', error);
+        callBtn.style.display = 'inline';
+    });
+}
+
+// Play audio sound
+async function sound(name) {
+    const sound = './assets/' + name + '.wav';
+    const audio = new Audio(sound);
+    try {
+        audio.volume = 0.5;
+        await audio.play();
+    } catch (err) {
+        return false;
+    }
+}
+
+// Handle leaving the room
+function handleLeave() {
+    connectedUser = null;
+    remoteVideo.srcObject = null;
+    if (thisConnection) {
+        thisConnection.close();
+        thisConnection = null;
+    }
+    window.location.href = '/';
+}
+
+// Handle and display errors
+function handleError(message, error = false) {
+    if (error) console.error(error);
+    sound('notify');
+    Swal.fire({
+        title: 'Warning',
+        text: message,
+        icon: 'warning',
+        confirmButtonText: 'OK',
+        showClass: { popup: 'animate__animated animate__fadeInDown' },
+        hideClass: { popup: 'animate__animated animate__fadeOutUp' },
+    });
+}
+
+// Send messages to the server
+function sendMsg(message) {
+    if (connectedUser) {
+        message.name = connectedUser;
+    }
+    socket.emit('message', message);
+}
+
+// Clean up before window close or reload
+window.onbeforeunload = () => {
+    handleHangUpClick();
+};
diff --git a/public/favicon/about.txt b/public/favicon/about.txt
new file mode 100644
index 0000000..952febe
--- /dev/null
+++ b/public/favicon/about.txt
@@ -0,0 +1,6 @@
+This favicon was generated using the following font:
+
+- Font Title: Leckerli One
+- Font Author: Copyright (c) 2011 Gesine Todt (www.gesine-todt.de hallo@gesine-todt.de), with Reserved Font Names "Leckerli"
+- Font Source: https://fonts.gstatic.com/s/leckerlione/v20/V8mCoQH8VCsNttEnxnGQ-1itLZxcBtItFw.ttf
+- Font License: SIL Open Font License, 1.1 (http://scripts.sil.org/OFL))
diff --git a/public/favicon/android-chrome-192x192.png b/public/favicon/android-chrome-192x192.png
new file mode 100644
index 0000000..7ece4fc
Binary files /dev/null and b/public/favicon/android-chrome-192x192.png differ
diff --git a/public/favicon/android-chrome-512x512.png b/public/favicon/android-chrome-512x512.png
new file mode 100644
index 0000000..6da4cd8
Binary files /dev/null and b/public/favicon/android-chrome-512x512.png differ
diff --git a/public/favicon/apple-touch-icon.png b/public/favicon/apple-touch-icon.png
new file mode 100644
index 0000000..4d41f49
Binary files /dev/null and b/public/favicon/apple-touch-icon.png differ
diff --git a/public/favicon/favicon-16x16.png b/public/favicon/favicon-16x16.png
new file mode 100644
index 0000000..e2ac2eb
Binary files /dev/null and b/public/favicon/favicon-16x16.png differ
diff --git a/public/favicon/favicon-32x32.png b/public/favicon/favicon-32x32.png
new file mode 100644
index 0000000..ef4f360
Binary files /dev/null and b/public/favicon/favicon-32x32.png differ
diff --git a/public/favicon/favicon.ico b/public/favicon/favicon.ico
new file mode 100644
index 0000000..33b8eec
Binary files /dev/null and b/public/favicon/favicon.ico differ
diff --git a/public/favicon/site.webmanifest b/public/favicon/site.webmanifest
new file mode 100644
index 0000000..1033ed0
--- /dev/null
+++ b/public/favicon/site.webmanifest
@@ -0,0 +1,11 @@
+{
+    "name": "",
+    "short_name": "",
+    "icons": [
+        { "src": "/android-chrome-192x192.png", "sizes": "192x192", "type": "image/png" },
+        { "src": "/android-chrome-512x512.png", "sizes": "512x512", "type": "image/png" }
+    ],
+    "theme_color": "#ffffff",
+    "background_color": "#ffffff",
+    "display": "standalone"
+}
diff --git a/public/index.html b/public/index.html
new file mode 100755
index 0000000..21ba06b
--- /dev/null
+++ b/public/index.html
@@ -0,0 +1,143 @@
+<!doctype html>
+<html lang="en">
+    <head>
+        <title>Call-me</title>
+
+        <!-- Meta Information -->
+        <meta charset="utf-8" />
+        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+
+        <!-- https://favicon.io/favicon-generator/ -->
+        <link rel="apple-touch-icon" sizes="180x180" href="/favicon/apple-touch-icon.png" />
+        <link rel="icon" type="image/png" sizes="32x32" href="/favicon/favicon-32x32.png" />
+        <link rel="icon" type="image/png" sizes="16x16" href="/favicon/favicon-16x16.png" />
+        <link rel="manifest" href="/favicon/site.webmanifest" />
+
+        <!-- Link to Bootstrap CSS -->
+        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap/dist/css/bootstrap.min.css" />
+
+        <!-- Link to Font Awesome CSS for icons -->
+        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.1.1/css/all.min.css" />
+
+        <!-- Link to your custom CSS file -->
+        <link rel="stylesheet" href="./style.css" />
+
+        <!-- Link to SweetAlert CSS file -->
+        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/sweetalert2@11.4.8/dist/sweetalert2.min.css" />
+
+        <!-- ink to Animate CSS file -->
+        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/animate.css/animate.min.css" />
+    </head>
+
+    <body>
+        <!-- Sign-in Page -->
+        <div id="signInPage" class="container text-center center">
+            <div class="container mt-5">
+                <div class="row justify-content-center">
+                    <div class="col-md-6">
+                        <div class="card">
+                            <div class="card-header"><h1>Call-me</h1></div>
+                            <div class="card-body">
+                                <!-- Sign-in Form -->
+                                <form>
+                                    <div class="mb-3">
+                                        <!-- Input field for entering the username -->
+                                        <input
+                                            id="usernameIn"
+                                            type="email"
+                                            class="form-control"
+                                            id="email"
+                                            placeholder="Enter username"
+                                            required
+                                            autofocus
+                                        />
+                                    </div>
+                                    <!-- Sign-in button -->
+                                    <button id="signInBtn" type="submit" class="btn btn-primary">Sign In</button>
+                                </form>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+
+        <!-- Room Page -->
+        <div class="container text-center center">
+            <div id="roomPage">
+                <!-- Local video element (user's video) -->
+                <div id="localVideoContainer">
+                    <video id="localVideo"></video>
+                    <span id="localUsername"></span>
+                </div>
+                <!-- Remote video element (video from the other user) -->
+                <video id="remoteVideo"></video>
+                <div class="row text-center">
+                    <div class="col-md-12">
+                        <div class="mb-3">
+                            <!-- Input field for entering the username to call -->
+                            <input
+                                id="callUsernameIn"
+                                type="text"
+                                class="form-control"
+                                placeholder="Username to call"
+                            />
+                        </div>
+                        <!-- Button to hide/show the local video -->
+                        <button
+                            id="hideBtn"
+                            class="btn btn-custom btn-primary btn-m"
+                            data-toggle="tooltip"
+                            data-placement="top"
+                            title="Toggle hide me"
+                        >
+                            <i class="fas fa-eye-slash"></i>
+                        </button>
+                        <!-- Button to initiate a video call -->
+                        <button
+                            id="callBtn"
+                            class="btn btn-custom btn-success btn-m"
+                            data-toggle="tooltip"
+                            data-placement="top"
+                            title="Call"
+                        >
+                            <i class="fas fa-phone"></i>
+                        </button>
+                        <!-- Button to hang up the call -->
+                        <button
+                            id="hangUpBtn"
+                            class="btn btn-custom btn-danger btn-m"
+                            data-toggle="tooltip"
+                            data-placement="top"
+                            title="Hang up"
+                        >
+                            <i class="fas fa-phone-slash"></i>
+                        </button>
+                    </div>
+                </div>
+            </div>
+        </div>
+
+        <!-- JavaScript libraries for WebSocket and custom client code -->
+        <script src="/socket.io/socket.io.js"></script>
+        <script src="client.js"></script>
+
+        <!-- Include SweetAlert JS file -->
+        <script src="https://cdn.jsdelivr.net/npm/sweetalert2@11.4.8/dist/sweetalert2.all.min.js"></script>
+
+        <!-- Include Bootstrap JavaScript file -->
+        <script src="https://cdn.jsdelivr.net/npm/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
+
+        <!-- Initialize tooltips -->
+        <script>
+            document.addEventListener('DOMContentLoaded', function () {
+                // Initialize tooltips
+                var tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-toggle="tooltip"]'));
+                var tooltipList = tooltipTriggerList.map(function (tooltipTriggerEl) {
+                    return new bootstrap.Tooltip(tooltipTriggerEl);
+                });
+            });
+        </script>
+    </body>
+</html>
diff --git a/public/style.css b/public/style.css
new file mode 100644
index 0000000..6945d65
--- /dev/null
+++ b/public/style.css
@@ -0,0 +1,133 @@
+/* Import font-family */
+@import url('https://fonts.googleapis.com/css?family=Comfortaa:wght@500&display=swap');
+
+/* Variables */
+:root {
+    --border-radius: 10px;
+}
+
+/* Global Styles */
+* {
+    outline: none;
+    font-family: 'Comfortaa';
+}
+
+html,
+body {
+    width: 100%;
+    height: 100%;
+    margin: 0;
+    padding: 0;
+    overflow: hidden; /* Prevent scrolling if the image is larger than the viewport */
+    background: url('background.jpg') center/cover no-repeat; /* Consolidate background properties */
+}
+
+/* General Card Styles */
+.card {
+    max-width: 400px !important;
+    margin: 0 auto !important;
+    color: #fff !important;
+    font-weight: bold !important;
+    border: none !important;
+    border-radius: 10px !important;
+    background: rgb(0 0 0 / 7%) !important;
+}
+
+/* Video Styles */
+video {
+    width: 100%;
+    height: auto;
+    border: none;
+    border-radius: var(--border-radius);
+    object-fit: contain;
+}
+
+/* Local Video Styles */
+#localVideoContainer {
+    position: absolute;
+    top: 10px;
+    left: 20px;
+    width: 15vw;
+    height: 15vh;
+    border-radius: var(--border-radius);
+    border: none;
+}
+
+#localUsername {
+    position: absolute;
+    top: 0px;
+    left: 0px;
+    color: #fff;
+    font-size: x-small;
+    border-radius: 5px;
+    margin: 5px;
+}
+
+/* Remote Video Styles */
+#remoteVideo {
+    width: 100%;
+    height: auto;
+    background: rgba(0, 0, 0, 0.5);
+    border-radius: var(--border-radius);
+    border: none;
+}
+
+/* Hidden Elements */
+.hide {
+    display: none;
+}
+
+input {
+    text-align: center;
+}
+
+/* Text Input Styles */
+#callUsernameIn {
+    background: rgba(0, 0, 0, 0.5);
+    color: #fff;
+    border: none;
+}
+
+/* Placeholder Styles */
+#callUsernameIn::placeholder {
+    color: #525252;
+    opacity: 1;
+}
+
+/* Center Alignment */
+.center {
+    position: fixed;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+}
+
+/* Custom button */
+.btn-custom {
+    height: 48px;
+    width: 48px;
+    border-radius: 50px !important;
+}
+
+/* Swal2 custom theme */
+.swal2-popup {
+    background-color: #333 !important;
+    color: #fff !important;
+    border: none !important;
+}
+.swal2-popup .swal2-styled:focus {
+    box-shadow: none !important;
+}
+.swal2-title {
+    color: #fff !important;
+}
+.swal2-actions .swal2-confirm {
+    background-color: #157346 !important;
+    color: #fff !important;
+    border: none !important;
+}
+.swal2-actions .swal2-cancel {
+    background-color: #666 !important;
+    color: #fff !important;
+    border: none !important;
+}