67 lines
2.0 KiB
PL/PgSQL
67 lines
2.0 KiB
PL/PgSQL
-- Migration 068: User carts table for server-side cart persistence
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-- Enables cart merge on login and server-side cart for logged-in users.
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BEGIN;
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CREATE TABLE IF NOT EXISTS public.user_carts (
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user_id UUID PRIMARY KEY REFERENCES auth.users(id) ON DELETE CASCADE,
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items JSONB NOT NULL DEFAULT '[]'::JSONB,
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-- Shape: [{ id, name, price, quantity, fulfillment, brand_id, brand_slug }]
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updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
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);
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ALTER TABLE public.user_carts ENABLE ROW LEVEL SECURITY;
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-- Users can read/write their own cart; platform_admin can read all
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CREATE POLICY "users_own_cart" ON public.user_carts
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FOR ALL USING (
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auth.uid() = user_id
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OR current_setting('app.settings.role', true)::TEXT = 'platform_admin'
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);
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-- RPC: upsert_user_cart — insert or update the user's cart
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-- p_user_id: optional override (platform_admin may pass to update another user's cart)
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CREATE OR REPLACE FUNCTION public.upsert_user_cart(
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p_user_id UUID,
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p_items JSONB
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)
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RETURNS JSONB
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LANGUAGE plpgsql SECURITY DEFINER SET search_path = public
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AS $$
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BEGIN
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INSERT INTO user_carts (user_id, items, updated_at)
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VALUES (p_user_id, p_items, now())
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ON CONFLICT (user_id) DO UPDATE SET
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items = p_items,
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updated_at = now()
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RETURNING jsonb_build_object('success', true, 'user_id', user_id, 'item_count', jsonb_array_length(p_items));
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END;
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$$;
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-- RPC: get_user_cart — fetch a user's cart
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CREATE OR REPLACE FUNCTION public.get_user_cart(p_user_id UUID)
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RETURNS JSONB
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LANGUAGE plpgsql SECURITY DEFINER SET search_path = public
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AS $$
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DECLARE
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v_items JSONB;
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BEGIN
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SELECT items INTO v_items FROM user_carts WHERE user_id = p_user_id;
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RETURN COALESCE(v_items, '[]'::JSONB);
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END;
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$$;
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-- RPC: clear_user_cart
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CREATE OR REPLACE FUNCTION public.clear_user_cart(p_user_id UUID)
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RETURNS JSONB
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LANGUAGE plpgsql SECURITY DEFINER SET search_path = public
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AS $$
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BEGIN
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DELETE FROM user_carts WHERE user_id = p_user_id;
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RETURN jsonb_build_object('success', true);
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END;
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$$;
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COMMIT;
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NOTIFY pgrst, 'reload schema'; |