"""Startup equivalents of migrations 19–23 (kept in sync by tests)."""

FEATURE_SCHEMA = (
    '''CREATE TABLE IF NOT EXISTS push_devices (
        id BIGSERIAL PRIMARY KEY,
        user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
        session_id INTEGER NOT NULL REFERENCES sessions(id) ON DELETE CASCADE,
        device_id UUID NOT NULL UNIQUE,
        token TEXT NOT NULL UNIQUE CHECK (length(token) BETWEEN 20 AND 4096),
        platform VARCHAR(16) NOT NULL CHECK (platform = 'android'),
        app_version VARCHAR(32) NOT NULL DEFAULT '',
        created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
        updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
        last_seen_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
    );
    CREATE INDEX IF NOT EXISTS idx_push_devices_user ON push_devices(user_id);
    CREATE INDEX IF NOT EXISTS idx_push_devices_session ON push_devices(session_id);''',
    '''CREATE TABLE IF NOT EXISTS bug_report_submissions (
        id UUID PRIMARY KEY,
        user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
        state VARCHAR(16) NOT NULL DEFAULT 'new'
            CHECK (state IN ('new', 'sending', 'success', 'failed', 'unknown')),
        issue_number INTEGER,
        created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
        submitted_at TIMESTAMP,
        expires_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP + INTERVAL '24 hours'
    );
    CREATE INDEX IF NOT EXISTS idx_bug_report_submissions_user
        ON bug_report_submissions(user_id, submitted_at);''',
    '''CREATE TABLE IF NOT EXISTS notification_preferences (
        user_id INTEGER PRIMARY KEY REFERENCES users(id) ON DELETE CASCADE,
        language VARCHAR(2) NOT NULL DEFAULT 'de' CHECK (language IN ('de', 'en')),
        friend_request BOOLEAN NOT NULL DEFAULT TRUE,
        direct_message BOOLEAN NOT NULL DEFAULT TRUE,
        event_invitation BOOLEAN NOT NULL DEFAULT TRUE
    );
    CREATE TABLE IF NOT EXISTS push_notifications (
        id UUID PRIMARY KEY,
        device_id BIGINT NOT NULL REFERENCES push_devices(id) ON DELETE CASCADE,
        session_id INTEGER NOT NULL REFERENCES sessions(id) ON DELETE CASCADE,
        recipient_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
        actor_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
        kind VARCHAR(32) NOT NULL CHECK (kind IN ('friend_request', 'direct_message', 'event_invitation')),
        object_id BIGINT NOT NULL,
        event_key TEXT NOT NULL,
        token_hash VARCHAR(64) NOT NULL,
        state VARCHAR(16) NOT NULL DEFAULT 'pending' CHECK (state IN ('pending', 'sent', 'dropped', 'failed')),
        attempts SMALLINT NOT NULL DEFAULT 0,
        created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
        expires_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP + INTERVAL '1 hour',
        available_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
        UNIQUE(device_id, event_key)
    );
    CREATE INDEX IF NOT EXISTS idx_push_notifications_pending
        ON push_notifications(available_at) WHERE state='pending';''',
    '''CREATE UNIQUE INDEX IF NOT EXISTS idx_user_badges_registration_cohort
        ON user_badges(user_id) WHERE badge_code IN ('alpha_tester', 'beta_tester', 'early_bird');''',
    '''CREATE TABLE IF NOT EXISTS followed_users (
        follower_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
        followed_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
        created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
        PRIMARY KEY (follower_id, followed_id),
        CHECK (follower_id <> followed_id)
    );
    CREATE INDEX IF NOT EXISTS idx_followed_users_followed
        ON followed_users(followed_id, follower_id);''',
)