CREATE TABLE IF NOT EXISTS migrations (
  version    INTEGER PRIMARY KEY,
  applied_at TEXT    NOT NULL
);

CREATE TABLE IF NOT EXISTS module_categories (
  id         TEXT PRIMARY KEY,
  name       TEXT NOT NULL UNIQUE COLLATE NOCASE,
  color      TEXT,
  icon       TEXT,
  sort_order INTEGER NOT NULL DEFAULT 0
);

CREATE TABLE IF NOT EXISTS modules (
  id          TEXT PRIMARY KEY,
  type        TEXT NOT NULL,
  name        TEXT NOT NULL,
  description TEXT NOT NULL DEFAULT '',
  category_id TEXT REFERENCES module_categories(id) ON DELETE SET NULL,
  tags        TEXT NOT NULL DEFAULT '[]',
  is_favorite INTEGER NOT NULL DEFAULT 0,
  payload     TEXT NOT NULL,
  version     INTEGER NOT NULL DEFAULT 1,
  created_at  TEXT NOT NULL,
  updated_at  TEXT NOT NULL
);

CREATE INDEX IF NOT EXISTS idx_modules_type ON modules(type);
CREATE INDEX IF NOT EXISTS idx_modules_category ON modules(category_id);
CREATE INDEX IF NOT EXISTS idx_modules_updated_at ON modules(updated_at DESC);