<?php
namespace app\common\model;

use app\common\model\Base;
use think\Model;

class FFProducts extends Base{
    
    // 设置当前模型对应的完整数据表名称
    protected $table = 'ff_products';
    
    // 设置主键
    protected $pk = 'id';
    
    // 自动写入时间戳
    protected $autoWriteTimestamp = true;
    
    /**
     * 获取分页列表
     * @param array $where 查询条件
     * @param string $field 查询字段
     * @param string $order 排序规则
     * @param string $pageSize 每页数量
     * @return array
     */
    public static function getList($where = [], $field = '*', $order = 'create_time desc', $pageSize = "15")
    {
        $list = self::where($where)
            ->field($field)
            ->order($order)
            ->paginate(['list_rows' => $pageSize, 'query' => request()->param()]);
        $page = $list->render();
        $data['list'] = $list->toArray()['data'];
        $data['count'] = $list->total();
        $data['page'] = $page;
        return $data;
    }

    /**
     * 获取所有列表（不分页）
     * @param array $where 查询条件
     * @param string $field 查询字段
     * @param string $order 排序规则
     * @param string $limit 限制条数
     * @return \think\Collection
     */
    public static function getAllList($where = [], $field = '*', $order = 'create_time desc', $limit = '0')
    {
        $data = self::where($where)
            ->field($field)
            ->order($order)
            ->limit($limit)
            ->select();
        return $data;
    }

    /**
     * 获取单条数据
     * @param array $where 查询条件
     * @param string $field 查询字段
     * @return array|Model|null
     */
    public static function getInfo($where = [], $field = '*')
    {
        $data = self::where($where)
            ->field($field)
            ->find();
        return $data;
    }
    
    /**
     * 获取热销商品
     */
    public static function getHotProducts($limit = 10, $field = '*')
    {
        return self::where('status', 1)
            ->where('is_hot', 1)
            ->field($field)
            ->order('sales desc')
            ->limit($limit)
            ->select();
    }

    /**
     * 获取新品商品
     */
    public static function getNewProducts($limit = 10, $field = '*')
    {
        return self::where('status', 1)
            ->where('is_new', 1)
            ->field($field)
            ->order('create_time desc')
            ->limit($limit)
            ->select();
    }
    
    /**
     * 获取推荐商品
     */
    public static function getRecommendProducts($limit = 10, $field = '*')
    {
        return self::where('status', 1)
            ->where('is_recommend', 1)
            ->field($field)
            ->order('create_time desc')
            ->limit($limit)
            ->select();
    }
    
    /**
     * 根据分类名称获取商品
     * @param string $categoryName 分类名称
     * @param int $limit 限制条数
     * @param string $field 查询字段
     * @return \think\Collection
     */
    public static function getProductsByCategory($categoryName, $limit = 10, $field = '*')
    {
        return self::where('status', 1)
            ->where('category_name', 'like', "%{$categoryName}%")
            ->field($field)
            ->order('create_time desc')
            ->limit($limit)
            ->select();
    }
    
    /**
     * 搜索商品
     */
    public static function searchProducts($keyword, $field = '*', $pageSize = 15)
    {
        return self::where('status', 1)
            ->where(function ($query) use ($keyword) {
                $query->where('product_name', 'like', "%{$keyword}%")
                      ->whereOr('product_desc', 'like', "%{$keyword}%")
                      ->whereOr('category_name', 'like', "%{$keyword}%");
            })
            ->field($field)
            ->order('create_time desc')
            ->paginate(['list_rows' => $pageSize, 'query' => request()->param()]);
    }
    
    /**
     * 更新库存
     * @param int $id 商品ID
     * @param int $num 减少的数量
     * @return bool
     */
    public static function updateStock($id, $num)
    {
        return self::where('id', $id)
            ->where('stock', '>=', $num)
            ->dec('stock', $num)
            ->inc('sales', $num)
            ->update();
    }
    
    /**
     * 根据条件获取商品列表并按价格排序
     * @param array $where 查询条件
     * @param string $order 排序规则 asc-升序 desc-降序
     * @param int $pageSize 每页数量
     * @return array
     */
    public static function getListByPrice($where = [], $order = 'asc', $pageSize = 15)
    {
        $orderRule = $order == 'asc' ? 'price asc' : 'price desc';
        return self::getList($where, '*', $orderRule, $pageSize);
    }
}