Initial commit: monorepo Match Live TV.

Rails API, app Flutter, infrastruttura Docker/MediaMTX, sito marketing e documentazione di deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/services/youtube/oauth_exchange.rb

@@ -0,0 +1,25 @@
+module Youtube
+  class OauthExchange
+    TOKEN_URL = "https://oauth2.googleapis.com/token".freeze
+
+    def self.call(code)
+      response = Faraday.post(TOKEN_URL, {
+        code: code,
+        client_id: ENV["YOUTUBE_CLIENT_ID"],
+        client_secret: ENV["YOUTUBE_CLIENT_SECRET"],
+        redirect_uri: ENV["YOUTUBE_REDIRECT_URI"],
+        grant_type: "authorization_code"
+      })
+      data = JSON.parse(response.body)
+      raise BroadcastService::Error, data["error_description"] if data["error"]
+
+      {
+        access_token: data["access_token"],
+        refresh_token: data["refresh_token"],
+        expires_in: data["expires_in"].to_i,
+        channel_id: nil,
+        channel_title: nil
+      }
+    end
+  end
+end