93 lines
3.6 KiB
PL/PgSQL
93 lines
3.6 KiB
PL/PgSQL
-- Migration 051: Customer-Specific Pricing Overrides
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-- Allows admin to set custom per-customer per-product prices
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-- that override the standard product price tiers.
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BEGIN;
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-- ── 1. Wholesale Customer Product Pricing table ────────────────────────────────
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CREATE TABLE IF NOT EXISTS public.wholesale_customer_product_pricing (
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id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
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customer_id UUID NOT NULL REFERENCES wholesale_customers(id) ON DELETE CASCADE,
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product_id UUID NOT NULL REFERENCES wholesale_products(id) ON DELETE CASCADE,
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custom_unit_price NUMERIC(10,2) NOT NULL,
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created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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UNIQUE (customer_id, product_id)
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);
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ALTER TABLE public.wholesale_customer_product_pricing ENABLE ROW LEVEL SECURITY;
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-- Admins can manage overrides
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DROP POLICY IF EXISTS "brand_admin_manage_pricing_overrides" ON wholesale_customer_product_pricing;
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CREATE POLICY "brand_admin_manage_pricing_overrides" ON wholesale_customer_product_pricing
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FOR ALL USING (
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current_setting('app.settings.role', true)::TEXT IN ('brand_admin', 'platform_admin')
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);
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-- ── 2. RPC: Get all pricing overrides for a customer ─────────────────────────
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DROP FUNCTION IF EXISTS public.get_wholesale_customer_pricing(UUID);
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CREATE OR REPLACE FUNCTION public.get_wholesale_customer_pricing(p_customer_id UUID DEFAULT NULL)
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RETURNS JSONB
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LANGUAGE plpgsql SECURITY DEFINER SET search_path = public
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AS $$
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DECLARE
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v_result JSONB;
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BEGIN
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SELECT jsonb_agg(jsonb_build_object(
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'product_id', wcpp.product_id,
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'custom_unit_price', wcpp.custom_unit_price,
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'product_name', wp.name
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)) INTO v_result
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FROM wholesale_customer_product_pricing wcpp
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JOIN wholesale_products wp ON wp.id = wcpp.product_id
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WHERE wcpp.customer_id = p_customer_id;
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RETURN COALESCE(v_result, '[]'::JSONB);
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END;
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$$;
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-- ── 3. RPC: Upsert a single pricing override ─────────────────────────────────
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DROP FUNCTION IF EXISTS public.upsert_wholesale_customer_pricing(UUID, UUID, NUMERIC);
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CREATE OR REPLACE FUNCTION public.upsert_wholesale_customer_pricing(
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p_customer_id UUID DEFAULT NULL,
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p_product_id UUID DEFAULT NULL,
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p_custom_unit_price NUMERIC DEFAULT NULL
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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 $$
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DECLARE
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v_id UUID;
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BEGIN
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INSERT INTO wholesale_customer_product_pricing (customer_id, product_id, custom_unit_price)
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VALUES (p_customer_id, p_product_id, p_custom_unit_price)
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ON CONFLICT (customer_id, product_id) DO UPDATE SET
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custom_unit_price = p_custom_unit_price,
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updated_at = now()
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RETURNING id INTO v_id;
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RETURN jsonb_build_object('success', true, 'id', v_id);
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END;
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$$;
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-- ── 4. RPC: Delete a pricing override ─────────────────────────────────────────
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DROP FUNCTION IF EXISTS public.delete_wholesale_customer_pricing(UUID, UUID);
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CREATE OR REPLACE FUNCTION public.delete_wholesale_customer_pricing(
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p_customer_id UUID DEFAULT NULL,
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p_product_id UUID DEFAULT NULL
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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 $$
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BEGIN
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DELETE FROM wholesale_customer_product_pricing
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WHERE customer_id = p_customer_id AND product_id = p_product_id;
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RETURN jsonb_build_object('success', true);
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END;
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$$;
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COMMIT;
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NOTIFY pgrst, 'reload schema';
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