<?php
namespace app\controller;

use app\BaseController;
use think\facade\Db;

//辅助下载控制器
class Fuzhu extends BaseController
{
    protected $noNeedLogin = ['search', 'getFuzhu'];
    
    //搜索辅助
    public function search()
    {
        $keywords = $this->request->post('keywords');  //搜索关键字
        if (empty($keywords)) {
            $this->fail(500, '关键字不能为空');
        }
        $data = Db::table('tb_fuzhu')
            ->where('title', 'like', '%' . $keywords . '%')
            ->select();
        $this->success('success', $data);
    }
    
    //获取辅助，需要支持分页
    public function getFuzhu()
    {
        $data = Db::table('tb_fuzhu')
            ->order('priority ASC')
            ->select();
        $this->success('success', $data);
    }
    
    //获取辅助详细信息，需登录
    public function detail()
    {
        $fuzhuId = $this->request->post('fuzhuId');   //辅助ID
        if (!is_numeric($fuzhuId)) {
            $this->fail(500, 'fuzhuId参数校验错误');
        }
        $data = Db::table('tb_fuzhu')
            ->where(['id' => $fuzhuId])
            ->find();
        if (!$data) {
            $this->fail(501, '找不到fuzhuId对应的辅助信息');
        }
        //投票数据赞踩百分比
        $totalVoteCount = Db::table('tb_fuzhu_vote')
            ->where(['fuzhu_id' => $fuzhuId])
            ->count();
        $totalUpCount = Db::table('tb_fuzhu_vote')
            ->where(['fuzhu_id' => $fuzhuId])
            ->where(['value'    => 1])
            ->count();
        $totalDownCount = Db::table('tb_fuzhu_vote')
            ->where(['fuzhu_id' => $fuzhuId])
            ->where(['value'    => 0])
            ->count();
        $upPercent = 0;
        $downPercent = 0;
        //被除数总投票次数不能为0，如果为0，投票百分比应当均为0
        if ($totalVoteCount != 0) {
            //需要转换为float计算保留2位小数，否则整数/整数=整数
            $upPercent = number_format(floatval($totalUpCount) / floatval($totalVoteCount) * 100, 2);
            $downPercent = number_format(floatval($totalDownCount) / floatval($totalVoteCount) * 100, 2);
        }
        $data['vote'] = [
            'upPercent'   => $upPercent,    //赞投票百分比
            'downPercent' => $downPercent,  //踩投票百分比
        ];
        //下载次数
        $data['download_count'] = Db::table('tb_fuzhu_download')
            ->where(['fuzhu_id' => $fuzhuId])
            ->count();
        $this->success('success', $data);
    }
    
    //推荐的猜你喜欢辅助，按排序优先级推荐最多5个，（后面优化到用户行为推荐），需登录
    public function recommendedFuzhu()
    {
        $fuzhuId = $this->request->post('fuzhuId');   //辅助ID
        if (!is_numeric($fuzhuId)) {
            $this->fail(500, 'fuzhuId参数校验错误');
        }
        $data = Db::table('tb_fuzhu')
            ->order('priority ASC')
            ->limit(5)
            ->select();
        $this->success('success', $data);
    }
    
    //赞踩投票，需登录
    public function vote()
    {
        $fuzhuId = $this->request->post('fuzhuId');   //辅助ID
        $value = $this->request->post('value');       //投票值  1:赞  0:踩
        if (!is_numeric($fuzhuId) || !is_numeric($value)) {
            $this->fail(500, '参数校验错误');
        }
        $value = intval($value);
        if (!in_array($value, [0, 1])) {
            $this->fail(500, '参数校验错误');
        }
        $fuzhu = Db::table('tb_fuzhu')
            ->where(['id' => $fuzhuId])
            ->find();
        if (!$fuzhu) {
            $this->fail(501, '辅助ID不存在');
        }
        //检测是否已经投过票
        $fuzhuVote = Db::table('tb_fuzhu_vote')
            ->where(['fuzhu_id' => $fuzhuId])
            ->where(['user_id'  => $this->getUser()->user_id])
            ->find();
        if ($fuzhuVote) {
            $this->fail(502, '您已经投过票');
        }
        Db::table('tb_fuzhu_vote')
            ->insert([
                'user_id'    => $this->getUser()->user_id,
                'fuzhu_id'   => $fuzhuId,
                'value'      => $value,
                'created_at' => time(),
            ]);
        $this->success('success', null);
    }
    
    //下载辅助
    public function download()
    {
        $gameId = $this->request->post('gameId');
        if (!is_numeric($gameId)) {
            $this->fail(500, 'gameId参数校验错误');
        }
        Db::table('tb_fuzhu_download')
            ->insert([
                'fuzhu_id'   => $fuzhuId,
                'user_id'    => $this->getUser()->user_id,
                'created_at' => time(),
            ]);
        $this->success('success', null);
    }
}