CREATE TABLE IF NOT EXISTS settings (
  `key` VARCHAR(64) PRIMARY KEY,
  `value` TEXT NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE IF NOT EXISTS required_chats (
  id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  title VARCHAR(255) NOT NULL,
  chat_id VARCHAR(255) NOT NULL,
  join_url VARCHAR(1024) NOT NULL,
  sort_order INT NOT NULL DEFAULT 0,
  enabled TINYINT(1) NOT NULL DEFAULT 1,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE IF NOT EXISTS files (
  id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
  code VARCHAR(64) NOT NULL UNIQUE,
  title VARCHAR(255) NOT NULL,
  media_type ENUM('document','video','audio','photo') NOT NULL DEFAULT 'document',
  telegram_file_id TEXT NOT NULL,
  caption TEXT NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE IF NOT EXISTS user_context (
  user_id BIGINT PRIMARY KEY,
  last_file_id BIGINT UNSIGNED NULL,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  CONSTRAINT fk_user_file FOREIGN KEY (last_file_id) REFERENCES files(id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE IF NOT EXISTS admin_state (
  admin_id BIGINT PRIMARY KEY,
  state VARCHAR(64) NOT NULL,
  data TEXT NULL,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

INSERT INTO settings (`key`,`value`) VALUES
('main_channel_title','Channel Utama'),
('main_channel_url','https://t.me/'),
('start_message','Silakan bergabung ke channel utama terlebih dahulu.'),
('join_message','Silakan join semua channel di bawah, lalu tekan 🔄 COBA LAGI.')
ON DUPLICATE KEY UPDATE `key`=`key`;