-- User Notification Preferences
-- Allows members to control what email notifications they receive

-- Create user notification preferences table
CREATE TABLE IF NOT EXISTS user_notification_preferences (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    member_id UUID NOT NULL REFERENCES members(id) ON DELETE CASCADE UNIQUE,

    -- Event notifications
    email_event_rsvp_confirmation BOOLEAN DEFAULT true,
    email_event_reminder BOOLEAN DEFAULT true,
    email_event_updates BOOLEAN DEFAULT true,
    email_waitlist_promotion BOOLEAN DEFAULT true,

    -- Membership notifications
    email_dues_reminder BOOLEAN DEFAULT true,
    email_payment_confirmation BOOLEAN DEFAULT true,
    email_membership_updates BOOLEAN DEFAULT true,

    -- General notifications
    email_announcements BOOLEAN DEFAULT true,
    email_newsletter BOOLEAN DEFAULT true,

    -- Newsletter frequency (if subscribed)
    newsletter_frequency TEXT DEFAULT 'monthly' CHECK (newsletter_frequency IN ('weekly', 'monthly', 'quarterly', 'never')),

    -- Timestamps
    created_at TIMESTAMPTZ DEFAULT NOW(),
    updated_at TIMESTAMPTZ DEFAULT NOW()
);

-- Create indexes
CREATE INDEX IF NOT EXISTS idx_notification_prefs_member ON user_notification_preferences(member_id);

-- Enable RLS
ALTER TABLE user_notification_preferences ENABLE ROW LEVEL SECURITY;

-- RLS Policies
-- Members can view their own preferences
CREATE POLICY "Members can view own notification preferences"
ON user_notification_preferences FOR SELECT
USING (member_id = auth.uid());

-- Members can insert their own preferences
CREATE POLICY "Members can insert own notification preferences"
ON user_notification_preferences FOR INSERT
WITH CHECK (member_id = auth.uid());

-- Members can update their own preferences
CREATE POLICY "Members can update own notification preferences"
ON user_notification_preferences FOR UPDATE
USING (member_id = auth.uid())
WITH CHECK (member_id = auth.uid());

-- Admins can view all preferences (for admin reports)
CREATE POLICY "Admins can view all notification preferences"
ON user_notification_preferences FOR SELECT
USING (
    EXISTS (
        SELECT 1 FROM members
        WHERE members.id = auth.uid()
        AND members.role = 'admin'
    )
);

-- Function to create default preferences for new members
CREATE OR REPLACE FUNCTION create_default_notification_preferences()
RETURNS TRIGGER AS $$
BEGIN
    INSERT INTO user_notification_preferences (member_id)
    VALUES (NEW.id)
    ON CONFLICT (member_id) DO NOTHING;
    RETURN NEW;
END;
$$ LANGUAGE plpgsql SECURITY DEFINER;

-- Trigger to create preferences when a new member is created
DROP TRIGGER IF EXISTS on_member_created_create_notification_prefs ON members;
CREATE TRIGGER on_member_created_create_notification_prefs
    AFTER INSERT ON members
    FOR EACH ROW
    EXECUTE FUNCTION create_default_notification_preferences();

-- Create default preferences for existing members
INSERT INTO user_notification_preferences (member_id)
SELECT id FROM members
ON CONFLICT (member_id) DO NOTHING;

-- Add updated_at trigger
CREATE OR REPLACE FUNCTION update_notification_prefs_updated_at()
RETURNS TRIGGER AS $$
BEGIN
    NEW.updated_at = NOW();
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

DROP TRIGGER IF EXISTS set_notification_prefs_updated_at ON user_notification_preferences;
CREATE TRIGGER set_notification_prefs_updated_at
    BEFORE UPDATE ON user_notification_preferences
    FOR EACH ROW
    EXECUTE FUNCTION update_notification_prefs_updated_at();