-- Experiment to replace listprices table with a view

-- Move local price adjustments from yaml file in API2 to table so we can access data
CREATE TYPE price_adjustments_product_type AS ENUM ('product', 'inquiry');
CREATE TABLE price_adjustments (
	market_id int REFERENCES markets (id) NOT NULL,
	material_id int REFERENCES "product-materials" (materialid) NOT NULL,
	product_type price_adjustments_product_type NOT NULL,
	value numeric NOT NULL,
	inserted timestamp with time zone DEFAULT now(),
	updated timestamp with time zone,
	UNIQUE (market_id, material_id, product_type)
);
CREATE TRIGGER updated_timestamp BEFORE UPDATE ON price_adjustments FOR EACH ROW EXECUTE PROCEDURE updated_timestamp();
INSERT INTO price_adjustments (market_id, material_id, product_type, value) VALUES
	((select id from markets where name = 'IT'), (select materialid from "product-materials" where material = 'standard-wallpaper'), 'inquiry', 1.1034),
	((select id from markets where name = 'GB'), (select materialid from "product-materials" where material = 'standard-wallpaper'), 'inquiry', 1.1154),
	((select id from markets where name = 'DE'), (select materialid from "product-materials" where material = 'standard-wallpaper'), 'inquiry', 1.0625),
	((select id from markets where name = 'GB'), (select materialid from "product-materials" where material = 'standard-wallpaper'), 'product', 1.1154),
	((select id from markets where name = 'DE'), (select materialid from "product-materials" where material = 'standard-wallpaper'), 'product', 1.0625),
	((select id from markets where name = 'IT'), (select materialid from "product-materials" where material = 'premium-wallpaper'), 'inquiry', 1.1250),
	((select id from markets where name = 'SE'), (select materialid from "product-materials" where material = 'premium-wallpaper'), 'inquiry', 1.0462),
	((select id from markets where name = 'GB'), (select materialid from "product-materials" where material = 'premium-wallpaper'), 'inquiry', 1.1034),
	((select id from markets where name = 'DE'), (select materialid from "product-materials" where material = 'premium-wallpaper'), 'inquiry', 1.1143),
	((select id from markets where name = 'NL'), (select materialid from "product-materials" where material = 'premium-wallpaper'), 'inquiry', 1.0833),
	((select id from markets where name = 'GB'), (select materialid from "product-materials" where material = 'premium-wallpaper'), 'product', 1.1034),
	((select id from markets where name = 'DE'), (select materialid from "product-materials" where material = 'premium-wallpaper'), 'product', 1.1143),
	((select id from markets where name = 'SE'), (select materialid from "product-materials" where material = 'premium-wallpaper'), 'product', 1.0462),
	((select id from markets where name = 'NL'), (select materialid from "product-materials" where material = 'premium-wallpaper'), 'product', 1.0833)
;

create view v_listprices as
select
    printid printproduct_id,
    markets.id market_id,
    round(
		-- Base price
		CASE
			WHEN groupid IN (1,3) THEN -- Wallpaper
				(select (price/100.0) from "product-materials" where material = 'standard-wallpaper')
			WHEN groupid = 2 THEN -- Canvas
				(select min(price_sek) from external_print_products where group_id = 2)
			WHEN groupid IN (7,8) THEN -- Poster
				(select min(price_sek) from external_print_products where group_id in (7,8))
		END
        -- Market price adjustment, and VAT, and currency exchange rate
        * exchange_rate * price_adjustment * vat
        -- Designer price premium, if exist
        * (coalesce(
			CASE
				WHEN groupid IN (1,3) THEN pricepremium_wallpaper
				WHEN groupid = 2 THEN pricepremium_canvas
				WHEN groupid = 7 THEN pricepremium_poster
				WHEN groupid = 8 THEN pricepremium_framed_print
			END
			, 1) / 100.0 + 1)
		-- Local product type adjustments, if wallpaper, and if exists
		* COALESCE(
			CASE WHEN groupid in (1,3) THEN
				(select value from price_adjustments where material_id = 1 and product_type = 'product' and market_id = markets.id limit 1)
			END
		, 1.0)
        -- Round to two decimals (to allow for more precision when shown as sq feet)
        , 2) listprice
from
    "product-printproducts"
    join "product-products" using (productid)
    left join designers using (designerid),
    markets join "product-currencies" on currency = iso3char
;

COMMENT ON COLUMN v_listprices.listprice IS 'Canvas and poster listprice:
Start with price (SEK) for cheapest canvas/poster size.
Multiply with market price adjustment, VAT and currency exchange rate.
Multiply with designer price premium, if exists.
Round to two decimals.

Wallpaper listprice:
Same as poster/canvas, but start with the price for 1 m/2 standard wallpaper.
Also include local wallpaper price adjustments (per market, product type, and material) if exists.';