-- ==========================================
-- Switchboard Core — 005 Notifications (SQLite)
-- ==========================================

CREATE TABLE IF NOT EXISTS notifications (
    id              TEXT PRIMARY KEY,
    user_id         TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    type            TEXT NOT NULL,
    title           TEXT NOT NULL,
    body            TEXT DEFAULT '',
    resource_type   TEXT,
    resource_id     TEXT,
    is_read         INTEGER DEFAULT 0,
    created_at      TEXT DEFAULT (datetime('now'))
);

CREATE INDEX IF NOT EXISTS idx_notifications_user_unread
    ON notifications(user_id, is_read, created_at);
CREATE INDEX IF NOT EXISTS idx_notifications_user_created
    ON notifications(user_id, created_at);

CREATE TABLE IF NOT EXISTS notification_preferences (
    id          TEXT PRIMARY KEY,
    user_id     TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    type        TEXT NOT NULL,
    in_app      INTEGER NOT NULL DEFAULT 1,
    email       INTEGER NOT NULL DEFAULT 0,
    UNIQUE(user_id, type)
);

CREATE INDEX IF NOT EXISTS idx_notification_prefs_user ON notification_preferences(user_id);