CREATE TABLE lifeos_migrations (
  user_id TEXT PRIMARY KEY,
  migrated_at TEXT NOT NULL
);

CREATE TABLE lifeos_meta (
  user_id TEXT NOT NULL,
  kind TEXT NOT NULL CHECK (kind IN ('profile', 'settings', 'system')),
  value_json TEXT NOT NULL,
  revision INTEGER NOT NULL DEFAULT 1,
  updated_at TEXT NOT NULL,
  PRIMARY KEY (user_id, kind)
);

CREATE TABLE lifeos_memories (
  user_id TEXT NOT NULL,
  id TEXT NOT NULL,
  memory_date TEXT,
  value_json TEXT NOT NULL,
  revision INTEGER NOT NULL DEFAULT 1,
  updated_at TEXT NOT NULL,
  deleted_at TEXT,
  PRIMARY KEY (user_id, id)
);
CREATE INDEX idx_lifeos_memories_user_date ON lifeos_memories(user_id, memory_date DESC) WHERE deleted_at IS NULL;

CREATE TABLE lifeos_memory_tags (
  user_id TEXT NOT NULL,
  memory_id TEXT NOT NULL,
  tag TEXT NOT NULL,
  PRIMARY KEY (user_id, memory_id, tag),
  FOREIGN KEY (user_id, memory_id) REFERENCES lifeos_memories(user_id, id)
);
CREATE INDEX idx_lifeos_memory_tags_user_tag ON lifeos_memory_tags(user_id, tag);
CREATE TRIGGER lifeos_memory_tags_insert AFTER INSERT ON lifeos_memories
WHEN NEW.deleted_at IS NULL
BEGIN
  INSERT OR IGNORE INTO lifeos_memory_tags(user_id, memory_id, tag)
  SELECT NEW.user_id, NEW.id, value FROM json_each(NEW.value_json, '$.tags')
  WHERE type = 'text' AND value <> '';
END;
CREATE TRIGGER lifeos_memory_tags_update AFTER UPDATE OF value_json, deleted_at ON lifeos_memories
BEGIN
  DELETE FROM lifeos_memory_tags WHERE user_id = NEW.user_id AND memory_id = NEW.id;
  INSERT OR IGNORE INTO lifeos_memory_tags(user_id, memory_id, tag)
  SELECT NEW.user_id, NEW.id, value FROM json_each(NEW.value_json, '$.tags')
  WHERE NEW.deleted_at IS NULL AND type = 'text' AND value <> '';
END;

CREATE TABLE lifeos_goals (
  user_id TEXT NOT NULL,
  id TEXT NOT NULL,
  target_date TEXT,
  done INTEGER NOT NULL DEFAULT 0,
  value_json TEXT NOT NULL,
  revision INTEGER NOT NULL DEFAULT 1,
  updated_at TEXT NOT NULL,
  deleted_at TEXT,
  PRIMARY KEY (user_id, id)
);
CREATE INDEX idx_lifeos_goals_user_status_date ON lifeos_goals(user_id, done, target_date) WHERE deleted_at IS NULL;

CREATE TABLE lifeos_tasks (
  user_id TEXT NOT NULL,
  id TEXT NOT NULL,
  goal_id TEXT,
  due_date TEXT,
  done INTEGER NOT NULL DEFAULT 0,
  value_json TEXT NOT NULL,
  revision INTEGER NOT NULL DEFAULT 1,
  updated_at TEXT NOT NULL,
  deleted_at TEXT,
  PRIMARY KEY (user_id, id)
);
CREATE INDEX idx_lifeos_tasks_user_status_date ON lifeos_tasks(user_id, done, due_date) WHERE deleted_at IS NULL;
CREATE INDEX idx_lifeos_tasks_user_goal ON lifeos_tasks(user_id, goal_id) WHERE deleted_at IS NULL;

CREATE TABLE lifeos_favorites (
  user_id TEXT NOT NULL,
  id TEXT NOT NULL,
  memory_id TEXT,
  value_json TEXT NOT NULL,
  revision INTEGER NOT NULL DEFAULT 1,
  updated_at TEXT NOT NULL,
  deleted_at TEXT,
  PRIMARY KEY (user_id, id)
);
CREATE INDEX idx_lifeos_favorites_user_memory ON lifeos_favorites(user_id, memory_id) WHERE deleted_at IS NULL;