CREATE DATABASE IF NOT EXISTS wendajia DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
USE wendajia;

CREATE TABLE IF NOT EXISTS admin_users (
  id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
  username VARCHAR(64) NOT NULL,
  password_hash VARCHAR(255) NOT NULL,
  display_name VARCHAR(64) NOT NULL,
  role_code VARCHAR(32) NOT NULL DEFAULT 'operator',
  is_active TINYINT(1) NOT NULL DEFAULT 1,
  last_login_at DATETIME NULL,
  created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (id),
  UNIQUE KEY uk_admin_users_username (username),
  KEY idx_admin_users_role (role_code),
  KEY idx_admin_users_status (is_active)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE IF NOT EXISTS admin_login_logs (
  id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
  user_id BIGINT UNSIGNED NULL,
  username VARCHAR(64) NOT NULL,
  success TINYINT(1) NOT NULL,
  ip_address VARCHAR(45) NULL,
  user_agent TEXT NULL,
  created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (id),
  KEY idx_admin_login_logs_user (user_id),
  KEY idx_admin_login_logs_username (username),
  KEY idx_admin_login_logs_created (created_at),
  CONSTRAINT fk_admin_login_logs_user FOREIGN KEY (user_id) REFERENCES admin_users(id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;