-- Migration to add multi-currency pricing support for drops
-- Date: 2025-01-XX
-- Adds support for CHF and EUR prices, both regular and wholesale

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
START TRANSACTION;
SET time_zone = "+00:00";

-- Add price columns to drops table
-- Prices are stored as decimal per gram
ALTER TABLE `drops`
  ADD COLUMN `price_chf` decimal(10,4) DEFAULT NULL AFTER `ppu`,
  ADD COLUMN `price_eur` decimal(10,4) DEFAULT NULL AFTER `price_chf`,
  ADD COLUMN `wholesale_price_chf` decimal(10,4) DEFAULT NULL AFTER `price_eur`,
  ADD COLUMN `wholesale_price_eur` decimal(10,4) DEFAULT NULL AFTER `wholesale_price_chf`;

-- Migrate existing ppu data to new price fields
-- ppu is stored as integer where 1000 = 1.00 EUR per gram
-- Convert to decimal format and set both EUR and CHF prices
UPDATE `drops`
SET 
  `price_eur` = `ppu` / 1000.0,
  `price_chf` = (`ppu` / 1000.0) * 0.97, -- Convert EUR to CHF (1 EUR ≈ 0.97 CHF)
  `wholesale_price_eur` = (`ppu` / 1000.0) * 0.76, -- 76% of regular price
  `wholesale_price_chf` = (`ppu` / 1000.0) * 0.76 * 0.97 -- 76% of regular price in CHF
WHERE `ppu` IS NOT NULL AND `ppu` > 0;

COMMIT;