<?php

declare (strict_types=1);

namespace app\store\controller\analysis;

use app\common\model\analysis\AnalysisDailyRetainTag;
use app\store\controller\Controller;
use app\store\model\analysis\AnalysisDailyRetain as AnalysisDailyRetainModel;
use app\store\model\analysis\AnalysisWeeklyRetain as AnalysisWeeklyRetainModel;
use app\store\model\analysis\AnalysisMonthlyRetain as AnalysisMonthlyRetainModel;
use app\common\service\Export as ExportService;

/**
 * 留存分析
 *
 * Class Retain
 * @package app\store\controller\analysis
 */
class Retain extends Controller
{


    public function exportRetainData(){
        $params = $this->request->param();
        $type = $params['type'] ?? 2; // 时间筛选类型 1-最近7天 2-最近30天 3-自定义
        $start = (int)($params['start'] ?? '');
        $end = (int)($params['end'] ?? '');
        $retain_type = $params['retain_type'] ?? 1; // 类型 1-新增用户留存 2-活跃用户留存
        $grain_size = $params['grain_size'] ?? 1; // 粒度 1-日粒度 2-周粒度 3-月粒度
        if ($type == 3 && (!$start || !$end)) {
            return $this->renderError('自定义区间时间不能为空');
        }

        // 根据时间筛选类型计算筛选开始结束时间
        if ($type == 1) { //最近7天
            $start = strtotime('-7 days');
            $end = strtotime('-1 days');
        } elseif ($type == 2) {//最近30天
            $start = strtotime('-30 days');
            $end = strtotime('-1 days');
        }

        $table = $this->getChartTables($start, $end, $retain_type, $grain_size);
       
        $data = [];
        $data['header'] = ['序号', '时间', '新增用户数','1天后','2天后','3天后','4天后','5天后','6天后','7天后','14天后','30天后'];
        $data['filename'] = '用户留存分析';
        $data['data'] = [];
        foreach ($table as $k=>$arr){
            $new_list['key'] = $k+1;
            $new_list['ref_date'] = $arr['ref_date'];
            $new_list['retain_0'] = $arr['retain_0'];
            $new_list['retain_1'] = $arr['retain_1'];
            $new_list['retain_2'] = $arr['retain_2'];
            $new_list['retain_3'] = $arr['retain_3'];
            $new_list['retain_4'] = $arr['retain_4'];
            $new_list['retain_5'] = $arr['retain_5'];
            $new_list['retain_6'] = $arr['retain_6'];
            $new_list['retain_7'] = $arr['retain_7'];
            $new_list['retain_14'] = $arr['retain_14'];
            $new_list['retain_30'] = $arr['retain_30'];
            $data['data'][] = $new_list;
        }
        $res = ExportService::export($data['data'],$data['header'],$data['filename'],'列表','Xls');
        return $this->renderSuccess($res,'导出成功');
    }

    /**
     * 留存数据
     *
     * @return array
     */
    public function retainData()
    {
        $params = $this->request->param();
        $type = $params['type'] ?? 2; // 时间筛选类型 1-最近7天 2-最近30天 3-自定义
        $start = (int)($params['start'] ?? '');
        $end = (int)($params['end'] ?? '');
        $retain_type = $params['retain_type'] ?? 1; // 类型 1-新增用户留存 2-活跃用户留存
        $grain_size = $params['grain_size'] ?? 1; // 粒度 1-日粒度 2-周粒度 3-月粒度
        if ($type == 3 && (!$start || !$end)) {
            return $this->renderError('自定义区间时间不能为空');
        }

        // 根据时间筛选类型计算筛选开始结束时间
        if ($type == 1) { //最近7天
            $start = strtotime('-7 days');
            $end = strtotime('-1 days');
        } elseif ($type == 2) {//最近30天
            $start = strtotime('-30 days');
            $end = strtotime('-1 days');
        }

        $table = $this->getChartTables($start, $end, $retain_type, $grain_size);

        $data = [
            'start' => date('Y-m-d', $start),
            'end' => date('Y-m-d', $end),
            'table' => $table
        ];
        return $this->renderSuccess($data);
    }

    private function getChartTables($start, $end, $retain_type, $grain_size)
    {
        $start = strtotime(date('Y-m-d', $start));
        $end = strtotime(date('Y-m-d', $end));
        if ($retain_type == AnalysisDailyRetainTag::TYPE_NEW) {
            $with = 'retainTagNew';
        } elseif($retain_type == AnalysisDailyRetainTag::TYPE_ACTIVE) {
            $with = 'retainTagActive';
        } else {
            return $this->renderError('留存类型参数无效');
        }
        $retainDays = self::getRetainDays($grain_size);
        if ($grain_size == 1) { // 日粒度
            $retainModel = new AnalysisDailyRetainModel();
        } elseif ($grain_size == 2) { // 周粒度
            $retainModel = new AnalysisWeeklyRetainModel();
            // 判断开始时间是否不满一周
            if (date("w",$start) != 1) {
                $start = strtotime('-1 monday', $start);
            }
        } elseif ($grain_size == 3) { // 月粒度
            $retainModel = new AnalysisMonthlyRetainModel();
            // 判断开始时间是否不满一月
            if (date("Y-m",$start) == date("Y-m")) {
                $start = strtotime(last_month('Y-m', 2, $start));
            } else {
                $start = strtotime(last_month('Y-m', 1, $start));
            }
        }

        $list = $retainModel::where('start_time', '>=', $start)
            ->where('end_time', '<', $end+ 86400)
            ->field('id,ref_date')
            ->with($with)
            ->order('ref_date', 'desc')
            ->paginate()
            ->each(function ($v) use ($with, $retainDays) {
                $tags = [];
                foreach ($v[$with] as $vv) {
                    $tags[$vv['key']] = $vv['value'];
                }
                foreach ($retainDays as $kk=>$rd) {
                    $retain_first = $tags[0]; // 当日
                    if (isset($tags[$rd])) {
                        if ($rd > 0) {
                            if ($tags[$rd] > 0 && $retain_first > 0) {
                                $v["retain_{$rd}"] = round(($tags[$rd] / $retain_first)*100, 2);
                            } else {
                                $v["retain_{$rd}"] = 0;
                            }
                        } else {
                            $v["retain_{$rd}"] = $tags[$rd];
                        }
                    } else {
                        $v["retain_{$rd}"] = '';
                    }
                }
                unset($v['id'],$v[$with]);
            });
        return $list;
    }

    private static function getRetainDays($grain_size)
    {
        if ($grain_size == 1) {
            return [0,1,2,3,4,5,6,7,14,30];
        } elseif ($grain_size  == 2) {
            return [0,1,2,3,4];
        } elseif ($grain_size == 3) {
            return [0,1];
        } else {
            return [];
        }

    }
}