refactor: move cli methods to app service

app/services/cli.cr

@@ -0,0 +1,38 @@
+require "../config/*"
+require "../lib/*"
+require "../models/*"
+
+module App::Services::Cli
+  def self.create_user(name)
+    user = App::Models::User.new
+    user.id = UUID.v4.to_s
+    user.name = name
+    user.api_key = Random::Secure.urlsafe_base64()
+
+    changeset = App::Lib::Database.insert(user)
+    return changeset.errors if !changeset.valid?
+
+    "New user created: Name: #{user.name}, X-Api-Key: #{user.api_key}"
+  end
+
+  def self.list_users
+    users = App::Lib::Database.all(App::Models::User)
+
+    return "No users found " if users.empty?
+
+    output = "Users:\n"
+    users.each do |user|
+      output += "ID: #{user.id}, Name: #{user.name}, X-Api-Key: #{user.api_key}\n"
+    end
+
+    output
+  end
+
+  def self.delete_user(user_id)
+    result = App::Lib::Database.raw_exec("DELETE FROM users WHERE id = (?)", user_id) # tempfix: Database.delete does not work
+
+    return "Failed to delete user: #{result}" if result.rows_affected == 0
+
+    "User with ID #{user_id} deleted successfully"
+  end
+end