<?php

class Upgrade16 extends Upgrade
{
    public function upgrade()
    {
        $changed = false;

        if (findModule('products_suppliers') || findModule('automatic_import')) {
            // jestlize je opravnene udelat upgrade, tak provest
            if ($this->checkRightfulness_1()) {
                $this->makeChanges_1();
                $changed = true;
            }

            if ($this->checkRightfulness_2()) {
                $this->makeChanges_2();
                $changed = true;
            }

            if ($this->checkRightfulness_3()) {
                $this->makeChanges_3();
                $changed = true;
            }

            if ($this->checkRightfulness_4()) {
                $this->makeChanges_4();
                $changed = true;
            }
        }

        if (findModule('stock_in') && $this->checkRightfulness_5()) {
            $this->makeChanges_5();
            $changed = true;
        }

        if ($changed == false) {
            $this->noChanges();
        }

        $this->printResult();
    }

    // overi, jestli je opravnene provest upgrade
    public function checkRightfulness_1()
    {
        $change = false;

        $SQL = sqlQuery("SHOW TABLES LIKE '".getTableName('stock_in_suppliers', false)."'");
        if (sqlNumRows($SQL) > 0) {
            $change = true;
        }

        return $change;
    }

    // provest samotny upgrade
    public function makeChanges_1()
    {
        $SQL = sqlQuery('RENAME TABLE stock_in_suppliers TO suppliers ;');

        $this->upgradeOK();
    }

    // overi, jestli je opravnene provest upgrade
    public function checkRightfulness_2()
    {
        $change = true;

        $SQL = sqlQuery("SHOW TABLES LIKE '".getTableName('suppliers', false)."'");
        if (sqlNumRows($SQL) > 0) {
            $change = false;
        }

        return $change;
    }

    // provest samotny upgrade
    public function makeChanges_2()
    {
        $SQL = sqlQuery('CREATE TABLE IF NOT EXISTS '.getTableName('suppliers').' (
                       `id` INT(11) NOT NULL AUTO_INCREMENT,
                       `name` VARCHAR(30) NOT NULL,
                       `order_url` TEXT NULL,
                       `address` VARCHAR(50) NULL,
                       `phone` VARCHAR(15) NULL,
                       `email` VARCHAR(30) NULL,
                       `ico` VARCHAR(15) NULL,
                       `dic` VARCHAR(15) NULL,
                       PRIMARY KEY (`id`),
                       UNIQUE KEY `ico` (`ico`)
                     ) ENGINE=InnoDB');

        $this->upgradeOK();
    }

    // overi, jestli je opravnene provest upgrade
    public function checkRightfulness_3()
    {
        $change = true;

        $SQL = sqlQuery("SHOW TABLES LIKE '".getTableName('products_of_suppliers', false)."'");
        if (sqlNumRows($SQL) > 0) {
            $change = false;
        }

        return $change;
    }

    // provest samotny upgrade
    public function makeChanges_3()
    {
        $SQL = sqlQuery('CREATE TABLE IF NOT EXISTS '.getTableName('products_of_suppliers')." (
               	   `id` INT(11) NOT NULL AUTO_INCREMENT,
               	   `id_product` INT(11) NOT NULL,
               	   `id_variation` INT(11) DEFAULT NULL,
               	   `id_supplier` INT(11) NOT NULL,
               	   `code` VARCHAR(25) NULL,
               	   `in_store` INT(11) NOT NULL DEFAULT '0',
               	   `last_sync` DATETIME NULL,
               	   PRIMARY KEY (`id`),
               	   UNIQUE KEY `id_product_2` (`id_product`,`id_variation`,`id_supplier`),
               	   KEY `id_variation` (`id_variation`),
               	   KEY `id_supplier` (`id_supplier`),
               	   KEY `id_product` (`id_product`)
               	   ) ENGINE=InnoDB");

        sqlQuery('ALTER TABLE `products_of_suppliers` ADD FOREIGN KEY ( `id_product` ) REFERENCES `products` (
	   `id`
	   ) ON DELETE CASCADE ON UPDATE CASCADE');

        sqlQuery('ALTER TABLE `products_of_suppliers` ADD FOREIGN KEY ( `id_variation` ) REFERENCES `products_variations` (
	   `id`
	   ) ON DELETE CASCADE ON UPDATE CASCADE');

        sqlQuery('ALTER TABLE `products_of_suppliers` ADD FOREIGN KEY ( `id_supplier` ) REFERENCES `suppliers` (
	   `id`
	   ) ON DELETE CASCADE ON UPDATE CASCADE');

        $this->upgradeOK();
    }

    // overi, jestli je opravnene provest upgrade
    public function checkRightfulness_4()
    {
        return (findModule(Modules::PRODUCTS_SUPPLIERS)
            || findModule(Modules::SUPPLIERS)
            || findModule(Modules::STOCK_IN)) && $this->checkTableExists('products_of_suppliers');
    }

    // provest samotny upgrade
    public function makeChanges_4()
    {
        $SQL = sqlQuery('ALTER TABLE '.getTableName('products_of_suppliers')." 
	         ADD (
	            `in_store` INT(11) NOT NULL DEFAULT '0',
              `last_sync` DATETIME NULL
	         )");

        // Delete old records nonexistent product/variation
        sqlQuery('DELETE pos FROM products_of_suppliers pos 
               LEFT JOIN products p ON p.id=pos.id_product 
               LEFT JOIN products_variations pv ON pv.id=pos.id_variation
               WHERE p.id IS NULL OR pv.id IS NULL');

        sqlQuery('ALTER TABLE `products_of_suppliers` ADD FOREIGN KEY ( `id_product` ) REFERENCES `products` (
	   `id`
	   ) ON DELETE CASCADE ON UPDATE CASCADE');

        sqlQuery('ALTER TABLE `products_of_suppliers` ADD FOREIGN KEY ( `id_variation` ) REFERENCES `products_variations` (
	   `id`
	   ) ON DELETE CASCADE ON UPDATE CASCADE');

        sqlQuery('ALTER TABLE `products_of_suppliers` ADD FOREIGN KEY ( `id_supplier` ) REFERENCES `suppliers` (
	   `id`
	   ) ON DELETE CASCADE ON UPDATE CASCADE');

        $this->upgradeOK();
    }

    // overi, jestli je opravnene provest upgrade
    public function checkRightfulness_5()
    {
        return $this->checkTableExists('stock_in');
    }

    // provest samotny upgrade
    public function makeChanges_5()
    {
        sqlQuery('CREATE TABLE IF NOT EXISTS '.getTableName('stock_in')." (
           `id` INT(11) NOT NULL AUTO_INCREMENT,
           `number` INT(11) NOT NULL,
           `code` INT(11) NOT NULL,
           `closed` TINYINT(1) NOT NULL DEFAULT '0',
           `date_created` DATETIME NOT NULL,
           `id_supplier` INT(11) NOT NULL,
           `total_price` DOUBLE NOT NULL DEFAULT '0',
           `transport_price` DOUBLE NOT NULL DEFAULT '0',
           `date_expiration` DATE DEFAULT NULL,
           `date_issued` DATE DEFAULT NULL,
           `payment_method` ENUM('dobirka','prevodem') NOT NULL DEFAULT 'dobirka',
           `paid` TINYINT(1) NOT NULL DEFAULT '0',
           `note` VARCHAR(50) DEFAULT NULL,
           `discount` DOUBLE NOT NULL DEFAULT '0',
           `finished` TINYINT(1) NOT NULL DEFAULT '0',
           PRIMARY KEY (`id`),
           UNIQUE KEY `code` (`code`,`id_supplier`),
           KEY `supplier` (`id_supplier`)
         ) ENGINE=InnoDB");

        sqlQuery('ALTER TABLE '.getTableName('stock_in').'
   	   ADD CONSTRAINT `stock_in_ibfk_1` FOREIGN KEY (`id_supplier`) REFERENCES `suppliers` (`id`)');

        sqlQuery('CREATE TABLE IF NOT EXISTS '.getTableName('stock_in_items').' (
           `id` INT(11) NOT NULL AUTO_INCREMENT,
           `name` VARCHAR(100) DEFAULT NULL,
           `id_stock_in` INT(11) NOT NULL,
           `id_product` INT(11) DEFAULT NULL,
           `id_variation` INT(11) DEFAULT NULL,
           `quantity` INT(11) NOT NULL,
           `price` DOUBLE NOT NULL,
           PRIMARY KEY (`id`),
           KEY `id_stock_in` (`id_stock_in`),
           KEY `id_product` (`id_product`),
           KEY `id_variation` (`id_variation`)
         ) ENGINE=InnoDB');

        sqlQuery('ALTER TABLE '.getTableName('stock_in_items').'
	   ADD CONSTRAINT `stock_in_items_ibfk_1` FOREIGN KEY (`id_stock_in`) REFERENCES `stock_in` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
	   ADD CONSTRAINT `stock_in_items_ibfk_4` FOREIGN KEY (`id_product`) REFERENCES `products` (`id`) ON DELETE SET NULL ON UPDATE CASCADE,
	   ADD CONSTRAINT `stock_in_items_ibfk_5` FOREIGN KEY (`id_variation`) REFERENCES `products_variations` (`id`) ON DELETE SET NULL ON UPDATE CASCADE');

        $this->upgradeOK();
    }
}