<?php

namespace metatable;

use phpcommon;

/*
  配置表规范
  getXXXConf:获取表所有数据
  getXxxById():通过id获取单个数据
  _internalGetXXXConf:获取表所有数据内部实现不对外开放

  使用方式
  require_once 'metatable/XXXX.php';

  !!!注意必须使用require_once
 */

function getShopConf()
{
    return _internalGetShopConf();
}

function getShopById($shop_id)
{
    $conf = getShopConf();
    $shop_id = (int)$shop_id;
    return array_key_exists($shop_id, $conf) ? $conf[$shop_id] : null;
}

function randGoods($shop_conf, $exclude_goods)
{
    $num = $shop_conf['num'];
    $goods_list = explode('|', $shop_conf['goods_list']);
    $goods_weight = explode('|', $shop_conf['goods_weight']);
    $discount_num = $shop_conf['discount_num'];
    if (!empty($exclude_goods)) {
        for ($i = count($goods_list) - 1; $i >= 0; --$i) {
            if (array_key_exists($goods_list[$i], $exclude_goods)) {
                array_splice($goods_list, $i, 1);
                array_splice($goods_weight, $i, 1);
                --$num;
            }
        }
    }
    $goods = array();
    for ($i = 0; $i < $num; ++$i) {
        $rand_space = 0;
        foreach ($goods_weight as $value) {
            $rand_space += $value;
        }

        if ($rand_space <= 0) {
            break;
        }
        $rnd_val  = rand(0, $rand_space);
        $curr_val = 0;
        $discount = false;
        if ($discount_num != 0) {
            $discount = true;
            $discount_num--;
        }
        for ($ii = 0; $ii < count($goods_weight); ++$ii) {
            $curr_val += $goods_weight[$ii];
            if ($rnd_val <= $curr_val) {
                array_push($goods, array(
                    'id' => $goods_list[$ii],
                    'active_time' => time(),
                    'status' => 0,
                    'isdiscount' => $discount,
                ));
                array_splice($goods_list, $ii, 1);
                array_splice($goods_weight, $ii, 1);
                break;
            }
        }
    }
    return $goods;
}

function _internalGetShopConf()
{
    global $g_shop_table;
    if (!$g_shop_table) {
        $g_shop_table = require(getConfigBaseDir() . 'shop@shop.php');
    }
    return $g_shop_table;
}