-- UOMysticmoon database schema (MariaDB)
-- Run automatically by the MariaDB container (docker-entrypoint-initdb.d) on a
-- fresh volume, and idempotently by ensureSchema() on every server boot.

CREATE TABLE IF NOT EXISTS users (
  id            INT AUTO_INCREMENT PRIMARY KEY,
  username      VARCHAR(32)  NOT NULL UNIQUE,
  password_hash VARCHAR(72)  NOT NULL,
  role          ENUM('admin','editor') NOT NULL DEFAULT 'admin',
  created_at    DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  last_login_at DATETIME NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE IF NOT EXISTS posts (
  id           INT AUTO_INCREMENT PRIMARY KEY,
  category     ENUM('news','five_on_friday','newsletter','screenshot') NOT NULL,
  title        VARCHAR(200) NOT NULL,
  slug         VARCHAR(220) NULL,
  excerpt      VARCHAR(400) NULL,
  body         MEDIUMTEXT   NULL,
  image_url    VARCHAR(500) NULL,
  published    TINYINT(1)   NOT NULL DEFAULT 0,
  author_id    INT NULL,
  created_at   DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  updated_at   DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  published_at DATETIME NULL,
  CONSTRAINT fk_posts_author FOREIGN KEY (author_id) REFERENCES users(id) ON DELETE SET NULL,
  INDEX idx_posts_feed (category, published, published_at)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE IF NOT EXISTS wiki_pages (
  id         INT AUTO_INCREMENT PRIMARY KEY,
  slug       VARCHAR(120) NOT NULL UNIQUE,
  title      VARCHAR(200) NOT NULL,
  body       MEDIUMTEXT   NULL,
  updated_by INT NULL,
  created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  CONSTRAINT fk_wiki_user FOREIGN KEY (updated_by) REFERENCES users(id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE IF NOT EXISTS settings (
  `key`      VARCHAR(64) PRIMARY KEY,
  value      TEXT NULL,
  updated_by INT NULL,
  updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  CONSTRAINT fk_settings_user FOREIGN KEY (updated_by) REFERENCES users(id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

CREATE TABLE IF NOT EXISTS activity_log (
  id         INT AUTO_INCREMENT PRIMARY KEY,
  user_id    INT NULL,
  action     VARCHAR(64) NOT NULL,
  detail     TEXT NULL,
  ip         VARCHAR(45) NULL,
  created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
  CONSTRAINT fk_activity_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE SET NULL,
  INDEX idx_activity_created (created_at)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;