scm/lib/Unit.php

<?php

namespace Scm\Lib;

use Dever;

class Unit
{
	private $default = array(
        'value' => -1,
        'name' => '请选择',
    );

	/**
     * 获取单位
     *
     * @return mixed
     */
    public function get_api()
    {
        # 联动总数
        $level_total = 2;

        # 当前联动级别
        $level_num = Dever::input('level_num');

        # 一般为id
        $level_id = Dever::input('level_id');

        # 是否是搜索列表页
        $level_search = Dever::input('level_search');
        $default = $this->default;

        if ($level_id < 0) {
            Dever::alert('error');
        }

        $config = Dever::db('scm/unit')->config['config_type'];

        # 联动
        if ($level_num == 1) {
        	$data = array();
            foreach ($config as $k => $v) {
            	$d['value'] = $k;
            	$d['name'] = $v;
            	$data[] = $d;
            }
        } elseif ($level_num == 2) {
            $data = Dever::db('scm/unit')->getAll(array('type' => $level_id));
        }

        if (!$data) {
            Dever::alert('error');
        }

        if ($level_search || $level_num >= 1) {
            array_unshift($data, $default);
        }

        $result['level_total'] = $level_total;
        $result['list'] = $data;
        return $result;
    }

    # 添加新单位
    public function add_api()
    {
    	$where['name'] = Dever::input('value');
    	if (!$where['name']) {
    		Dever::alert('请输入单位名称');
    	}
        $info = Dever::db('scm/unit')->find($where);
        if (!$info) {
        	$info['id'] = Dever::db('scm/unit')->insert($where);
        }
        return $info;
    }

    # 获取库中的基础单位的总价和总数
    public function getData($goods_id, $sku_id, $unit_id = false, $supplier_id = false, $cash_col = false, $table = false, $where = array())
    {
        $where['goods_id'] = $goods_id;
        $where['sku_id'] = $sku_id;

        # 仓库
        $servicer_store_id = Dever::input('servicer_store_id');
        if ($servicer_store_id) {
            $where['servicer_store_id'] = $servicer_store_id;
            $table = 'scm_servicer/store_goods_list';
        }

        $result = array();
        $result['num'] = $result['cash'] = 0;

        if ($table) {
            $list = Dever::db($table)->getUnit($where);
            if ($list) {
                foreach ($list as $k => $v) {
                    $base = $this->convertBase($goods_id, $sku_id, $v['unit_id'], $v['total'], $v['cash'], $supplier_id);
                    if ($base) {
                        $result['num'] += $base['num'];
                        $result['cash'] += $base['cash'];
                    }
                }
            }
        }

        if ($unit_id) {
            if ($cash_col) {
                $result['cash'] = $cash_col;
            }
            $unit = $this->convertUnit($goods_id, $sku_id, $unit_id, $result['num'], $result['cash'], $supplier_id);
            if ($unit) {
                $result['num'] = $unit['num'];
                $result['cash'] = $unit['cash'];
            }
        }

        $result['num'] = Dever::number($result['num'], 2);
        $result['cash'] = Dever::number($result['cash'], 2);

        return $result;
    }

    # 将单位转换成基础单位，并获取基础价格和基础数量 unit_id 当前单位，num当前单位数量, cash当前单位价格
    public function convertBase($goods_id, $sku_id, $unit_id, $num, $cash, $supplier_id = false)
    {
        $result = $this->getInfo($goods_id, $sku_id, $unit_id, $num, $cash, $supplier_id);
        if ($result) {
            # 基础单位和当前单位不同
            if ($result['unit']) {
                $unit = $result['unit'];
                if ($unit && $unit['discount'] > 0) {
                    $result['cash'] = $result['cash'] / $unit['radio'] / $unit['discount'];
                    $result['num'] = $num * $unit['radio'];
                }
            }
            $result = Dever::number(array(array('cash', 'num'), $result));
        }

        return $result;
    }

    # 获取当前单位对应基础单位的价格和数量 unit_id 当前单位，base_num基础单位数量, base_cash基础单位价格
    public function convertUnit($goods_id, $sku_id, $unit_id, $base_num, $base_cash, $supplier_id = false)
    {
        $result = $this->getInfo($goods_id, $sku_id, $unit_id, $base_num, $base_cash, $supplier_id);
        if ($result) {
            # 基础单位和当前单位不同
            if ($result['unit']) {
                $unit = $result['unit'];
                $result['unit_id'] = $unit['unit_id'];
                if ($unit && $unit['discount'] > 0) {
                    $result['cash'] = $result['cash'] * $unit['radio'] * $unit['discount'];
                    $result['num'] = round($result['num'] / $unit['radio'], 2);
                }
            }

            $result = Dever::number(array(array('cash', 'num'), $result));
        }

        return $result;
    }

    private function getInfo($goods_id, $sku_id, $unit_id, $num, $cash, $supplier_id = false)
    {
        $goods_info = Dever::load('scm_product/lib/info')->getBaseInfo($goods_id, $sku_id);
        $result = array();
        if ($goods_info) {
            # 获取供应商供货价
            if ($supplier_id) {
                $where['supplier_id'] = $supplier_id;
                $where['goods_id'] = $goods_id;
                $where['sku_id'] = $sku_id;
                $sku = Dever::db('scm_supplier/goods')->getOne($where);
            }
            if (!is_numeric($cash)) {
                $cash = isset($sku[$cash]) && $sku[$cash] ? $sku[$cash] : $goods_info[$cash];
            }

            # 当前单位和价格
            $result['unit_id'] = $unit_id;
            $result['num'] = $num;
            $result['cash'] = $cash;

            # 单位基本信息
            $result['unit'] = array();
            if ($unit_id != $goods_info['unit_id']) {
                $result['unit_id'] = $goods_info['unit_id'];
                $result['unit'] = Dever::db('scm_product/info_unit')->find(array('info_id' => $goods_info['id'], 'unit_id' => $unit_id));
            }
        }
        return $result;
    }
}