chore: add github installation steps

app/controllers/github/callbacks_controller.rb

@@ -2,18 +2,78 @@ class Github::CallbacksController < ApplicationController
   include Github::IntegrationHelper
 
   def show
+    # Log all received parameters for debugging
+    Rails.logger.info("GitHub callback received parameters: #{params.to_unsafe_h}")
+    Rails.logger.info("installation_id present: #{params[:installation_id].present?}")
+    Rails.logger.info("code present: #{params[:code].present?}")
+    Rails.logger.info("setup_action: #{params[:setup_action]}")
+    Rails.logger.info("state present: #{params[:state].present?}")
+
+    if params[:installation_id].present? && params[:code].present?
+      Rails.logger.info('Handling installation with OAuth')
+      # Both installation and OAuth code present - handle both
+      handle_installation_with_oauth
+    elsif params[:installation_id].present?
+      Rails.logger.info('Handling installation only')
+      # Only installation_id present - redirect to OAuth
+      handle_installation
+    else
+      Rails.logger.info('Handling authorization only')
+      # Only OAuth code present - handle authorization
+      handle_authorization
+    end
+  rescue StandardError => e
+    Rails.logger.error("Github callback error: #{e.message}")
+    redirect_to fallback_redirect_uri
+  end
+
+  private
+
+  def handle_installation_with_oauth
+    Rails.logger.info("Processing installation with OAuth - installation_id: #{params[:installation_id]}, code: #{params[:code]}")
+    # Handle both installation and OAuth in one go
+    installation_id = params[:installation_id]
+
+    @response = oauth_client.auth_code.get_token(
+      params[:code],
+      redirect_uri: "#{base_url}/github/callback"
+    )
+
+    handle_response(installation_id)
+  end
+
+  def handle_installation
+    Rails.logger.info("Processing installation only - setup_action: #{params[:setup_action]}, installation_id: #{params[:installation_id]}")
+    if params[:setup_action] == 'install'
+      installation_id = params[:installation_id]
+
+      redirect_to build_oauth_url(installation_id)
+    else
+      Rails.logger.error("Unknown setup_action: #{params[:setup_action]}")
+      redirect_to github_integration_settings_url
+    end
+  end
+
+  def handle_authorization
+    Rails.logger.info("Processing authorization only - code: #{params[:code]}")
     @response = oauth_client.auth_code.get_token(
       params[:code],
       redirect_uri: "#{base_url}/github/callback"
     )
 
     handle_response
-  rescue StandardError => e
-    Rails.logger.error("Github callback error: #{e.message}")
-    redirect_to github_redirect_uri
   end
 
-  private
+  def build_oauth_url(installation_id)
+    GlobalConfigService.load('GITHUB_CLIENT_ID', nil)
+
+    # Store installation_id in session for later use
+    session[:github_installation_id] = installation_id
+
+    # For now, redirect to a page that will initiate OAuth with proper account context
+    # This is a temporary solution until we have a proper account-agnostic setup
+    "#{ENV.fetch('FRONTEND_URL', nil)}/app/accounts/1/settings/integrations/github?setup_action=install&installation_id=#{installation_id}"
+  end
 
   def oauth_client
     app_id = GlobalConfigService.load('GITHUB_CLIENT_ID', nil)
@@ -30,21 +90,37 @@ class Github::CallbacksController < ApplicationController
     )
   end
 
-  def handle_response
-    hook = account.hooks.new(
+  def handle_response(installation_id = nil)
+    settings = {
+      token_type: parsed_body['token_type'],
+      scope: parsed_body['scope']
+    }
+
+    # Add installation_id from parameter or session
+    if installation_id
+      settings[:installation_id] = installation_id
+    elsif session[:github_installation_id]
+      settings[:installation_id] = session[:github_installation_id]
+    end
+
+    # Use account from state parameter - this should work for both flows now
+    target_account = account
+
+    hook = target_account.hooks.new(
       access_token: parsed_body['access_token'],
       status: 'enabled',
       app_id: 'github',
-      settings: {
-        token_type: parsed_body['token_type'],
-        scope: parsed_body['scope']
-      }
+      settings: settings
     )
     hook.save!
+
+    # Clear session data
+    session.delete(:github_installation_id)
+
     redirect_to github_redirect_uri
   rescue StandardError => e
     Rails.logger.error("Github callback error: #{e.message}")
-    redirect_to github_redirect_uri
+    redirect_to fallback_redirect_uri
   end
 
   def account
@@ -52,15 +128,30 @@ class Github::CallbacksController < ApplicationController
   end
 
   def account_id
-    return unless params[:state]
+    # First try to get from state parameter (OAuth flow)
+    return verify_github_token(params[:state]) if params[:state].present?
 
-    verify_github_token(params[:state])
+    # Fallback to hardcoded account 1 for installation flow (temporary)
+    1
   end
 
   def github_redirect_uri
     "#{ENV.fetch('FRONTEND_URL', nil)}/app/accounts/#{account.id}/settings/integrations/github"
   end
 
+  def github_integration_settings_url
+    "#{ENV.fetch('FRONTEND_URL', nil)}/app/accounts/1/settings/integrations/github"
+  end
+
+  def fallback_redirect_uri
+    if account_id
+      github_redirect_uri
+    else
+      # Fallback if no account context available
+      "#{ENV.fetch('FRONTEND_URL', nil)}/app/settings/integrations"
+    end
+  end
+
   def parsed_body
     @parsed_body ||= @response.response.parsed
   end