feat: create clicks model + migration

app/models/click.cr

@@ -0,0 +1,18 @@
+require "crecto"
+
+module App::Models
+  class Click < Crecto::Model
+    schema :clicks do
+      field :id, String, primary_key: true
+      field :user_agent, String
+      field :language, String
+      field :browser, String
+      field :os, String
+      field :source, String
+
+      belongs_to :link, Link
+    end
+
+    validate_required [:user_agent, :language, :source]
+  end
+end

app/models/link.cr

@@ -9,7 +9,6 @@ module App::Models
       field :id, String, primary_key: true
       field :slug, String
       field :url, String
-      field :click_counter, Int64, default: 0
 
       belongs_to :user, User
     end

db/migrations/20240512214223_create_links.sql

@@ -5,7 +5,6 @@ CREATE TABLE links (
 	user_id TEXT NOT NULL,
 	slug VARCHAR(4) UNIQUE NOT NULL,
 	url TEXT NOT NULL,
-	click_counter INTEGER NOT NULL DEFAULT 0,
 	created_at INTEGER DEFAULT CURRENT_TIMESTAMP NOT NULL,
 	updated_at INTEGER DEFAULT CURRENT_TIMESTAMP NOT NULL,
 

db/migrations/20240711224103_create_clicks.sql

@@ -0,0 +1,19 @@
+-- +micrate Up
+-- SQL in section 'Up' is executed when this migration is applied
+CREATE TABLE clicks (
+	id TEXT PRIMARY KEY NOT NULL,
+	link_id TEXT NOT NULL,
+	user_agent TEXT,
+	language TEXT,
+	browser TEXT,
+	os TEXT,
+	source TEXT,
+	created_at INTEGER DEFAULT CURRENT_TIMESTAMP NOT NULL,
+	updated_at INTEGER DEFAULT CURRENT_TIMESTAMP NOT NULL,
+
+	FOREIGN KEY (link_id) REFERENCES links(id) ON DELETE CASCADE
+);
+
+-- +micrate Down
+-- SQL section 'Down' is executed when this migration is rolled back
+DROP TABLE clicks;