final 0.9
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184
referral_points_migration.sql
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184
referral_points_migration.sql
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-- Migration script to add referral points system to existing database
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-- Run this script on your existing database to add referral points functionality
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-- Date: 2025-12-28
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SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
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START TRANSACTION;
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SET time_zone = "+00:00";
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-- Add referral_points column to buyers table
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ALTER TABLE `buyers`
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ADD COLUMN `referral_points` decimal(10,2) NOT NULL DEFAULT 0.00 AFTER `email`;
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-- Add points_used column to pending_orders table
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ALTER TABLE `pending_orders`
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ADD COLUMN `points_used` decimal(10,2) NOT NULL DEFAULT 0.00 AFTER `price_currency`;
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-- Add points_used and price_amount columns to sales table
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ALTER TABLE `sales`
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ADD COLUMN `price_amount` decimal(10,2) DEFAULT NULL AFTER `payment_id`,
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ADD COLUMN `price_currency` varchar(10) NOT NULL DEFAULT 'chf' AFTER `price_amount`,
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ADD COLUMN `points_used` decimal(10,2) NOT NULL DEFAULT 0.00 AFTER `price_currency`;
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-- Create referral_point_transactions table
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CREATE TABLE `referral_point_transactions` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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`buyer_id` int(11) NOT NULL,
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`points` decimal(10,2) NOT NULL,
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`type` enum('earned','spent') NOT NULL,
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`sale_id` int(11) DEFAULT NULL,
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`pending_order_id` int(11) DEFAULT NULL,
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`description` text DEFAULT NULL,
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`created_at` datetime NOT NULL DEFAULT current_timestamp(),
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PRIMARY KEY (`id`),
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KEY `buyer_id` (`buyer_id`),
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KEY `sale_id` (`sale_id`),
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KEY `pending_order_id` (`pending_order_id`),
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CONSTRAINT `referral_point_transactions_ibfk_1` FOREIGN KEY (`buyer_id`) REFERENCES `buyers` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
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CONSTRAINT `referral_point_transactions_ibfk_2` FOREIGN KEY (`sale_id`) REFERENCES `sales` (`id`) ON DELETE SET NULL ON UPDATE CASCADE,
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CONSTRAINT `referral_point_transactions_ibfk_3` FOREIGN KEY (`pending_order_id`) REFERENCES `pending_orders` (`id`) ON DELETE SET NULL ON UPDATE CASCADE
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
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-- Create referral_settings table
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CREATE TABLE `referral_settings` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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`setting_key` varchar(100) NOT NULL,
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`setting_value` varchar(255) NOT NULL,
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`description` text DEFAULT NULL,
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`updated_at` datetime NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(),
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PRIMARY KEY (`id`),
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UNIQUE KEY `setting_key` (`setting_key`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
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-- Insert default referral settings
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INSERT INTO `referral_settings` (`setting_key`, `setting_value`, `description`) VALUES
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('points_per_chf', '10', 'Number of referral points earned per 1 CHF purchase by referred user'),
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('points_to_chf', '100', 'Number of referral points required to redeem 1 CHF discount');
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-- Create stored procedure to award referral points
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DELIMITER $$
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CREATE PROCEDURE `award_referral_points`(IN p_sale_id INT)
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BEGIN
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DECLARE v_buyer_id INT;
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DECLARE v_referrer_id INT;
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DECLARE v_price_amount DECIMAL(10,2);
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DECLARE v_points_per_chf DECIMAL(10,2);
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DECLARE v_points_earned DECIMAL(10,2);
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DECLARE v_drop_id INT;
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DECLARE v_size INT;
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DECLARE v_ppu DECIMAL(10,2);
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DECLARE v_currency VARCHAR(10);
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-- Get sale details
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SELECT buyer_id, drop_id, size, COALESCE(price_amount, 0), price_currency
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INTO v_buyer_id, v_drop_id, v_size, v_price_amount, v_currency
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FROM sales
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WHERE id = p_sale_id;
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-- If price_amount is not set, calculate it from drop's ppu
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IF v_price_amount = 0 OR v_price_amount IS NULL THEN
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SELECT ppu INTO v_ppu FROM drops WHERE id = v_drop_id;
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SET v_price_amount = v_ppu * v_size;
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END IF;
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-- Get the referrer for this buyer (if any)
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SELECT referrer INTO v_referrer_id
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FROM referrals
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WHERE referree = v_buyer_id
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LIMIT 1;
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-- If there's a referrer, award points
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IF v_referrer_id IS NOT NULL THEN
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-- Get points_per_chf setting
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SELECT CAST(setting_value AS DECIMAL(10,2)) INTO v_points_per_chf
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FROM referral_settings
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WHERE setting_key = 'points_per_chf'
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LIMIT 1;
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-- Default to 10 if setting not found
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IF v_points_per_chf IS NULL THEN
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SET v_points_per_chf = 10;
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END IF;
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-- Calculate points earned (based on actual purchase amount in CHF)
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SET v_points_earned = v_price_amount * v_points_per_chf;
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-- Update referrer's points balance
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UPDATE buyers
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SET referral_points = referral_points + v_points_earned
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WHERE id = v_referrer_id;
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-- Record the transaction
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INSERT INTO referral_point_transactions (
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buyer_id,
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points,
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type,
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sale_id,
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description
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) VALUES (
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v_referrer_id,
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v_points_earned,
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'earned',
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p_sale_id,
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CONCAT('Points earned from referral purchase (Sale #', p_sale_id, ', Amount: ', v_price_amount, ' ', v_currency, ')')
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);
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END IF;
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END$$
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-- Create stored procedure to spend referral points
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CREATE PROCEDURE `spend_referral_points`(
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IN p_buyer_id INT,
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IN p_points_to_spend DECIMAL(10,2),
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IN p_pending_order_id INT,
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IN p_sale_id INT,
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OUT p_success INT
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)
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BEGIN
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DECLARE v_current_points DECIMAL(10,2);
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DECLARE v_new_balance DECIMAL(10,2);
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-- Get current points balance
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SELECT referral_points INTO v_current_points
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FROM buyers
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WHERE id = p_buyer_id;
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-- Check if buyer has enough points
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IF v_current_points IS NULL OR v_current_points < p_points_to_spend THEN
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SET p_success = 0;
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ELSE
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-- Deduct points
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SET v_new_balance = v_current_points - p_points_to_spend;
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UPDATE buyers
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SET referral_points = v_new_balance
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WHERE id = p_buyer_id;
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-- Record the transaction
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INSERT INTO referral_point_transactions (
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buyer_id,
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points,
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type,
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sale_id,
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pending_order_id,
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description
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) VALUES (
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p_buyer_id,
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p_points_to_spend,
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'spent',
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p_sale_id,
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p_pending_order_id,
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CONCAT('Points spent for purchase',
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IF(p_sale_id IS NOT NULL, CONCAT(' (Sale #', p_sale_id, ')'), ''),
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IF(p_pending_order_id IS NOT NULL, CONCAT(' (Pending Order #', p_pending_order_id, ')'), '')
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)
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);
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SET p_success = 1;
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END IF;
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END$$
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DELIMITER ;
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COMMIT;
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