<?php

namespace app\admin\controller;

use app\admin\model\Admin;
use app\admin\model\car\Sales;
use app\admin\model\User;
use app\common\controller\Backend;
use app\common\model\Attachment;
use fast\Date;
use think\Db;
use function Symfony\Component\Clock\now;

/**
 * 控制台
 *
 * @icon   fa fa-dashboard
 * @remark 用于展示当前系统中的统计数据、统计报表及重要实时数据
 */
class Dashboard extends Backend
{

    /**
     * 查看
     */
    public function index()
    {

        $start = now()->modify('-30 days')->format('Y-m-d');
        $end_at = now()->format('Y-m-d');
        $default_daterange = $start . ' - ' . $end_at;

        $this->view->assign('default_daterange', $default_daterange);
        return $this->view->fetch();
    }

    public function getData()
    {

        $start = now()->modify('-30 days')->format('Y-m-d');
        $end_at = now()->format('Y-m-d 23:29:59');

        $filter = request()->get('range', '');
        if (!empty($filter)) {
            $arr = explode(' - ', $filter);
            if (trim($arr[0])) {
                $start = trim($arr[0]) . ' 00:00:00';
            }
            if (trim($arr[1])) {
                $end_at = trim($arr[1]) . ' 23:29:59';
            }
        }

        $top = $this->getTopTotal($start, $end_at);
        $lines = $this->getLines($start, $end_at);
        $this->success(data: [
            'top' => $top,
            'lines' => $lines
        ]);
    }


    private function prepareEchartsBarData(array $data, string $startDate, string $endDate): array
    {
        // 将原始数据用日期作为键索引
        $indexed = [];
        foreach ($data as $item) {
            $indexed[$item['day']] = $item;
        }

        $start = strtotime($startDate);
        $end = strtotime($endDate);

        $xAxis = [];
        $series_total = [];
        $series_count = [];

        $new_count_array = [];
        $old_count_array = [];
        $rent_count_array = [];
        $new_total_array = [];
        $old_total_array = [];
        $rent_total_array = [];

        for ($date = $start; $date <= $end; $date += 86400) {
            $day = date('Y-m-d', $date);
            $xAxis[] = $day;

            $total = $indexed[$day]['total'] ?? 0;
            $count = $indexed[$day]['count'] ?? 0;
            $new_count = $indexed[$day]['new_count'] ?? 0;
            $old_count = $indexed[$day]['old_count'] ?? 0;
            $rent_count = $indexed[$day]['rent_count'] ?? 0;
            $new_total = $indexed[$day]['new_total'] ?? 0;
            $old_total = $indexed[$day]['old_total'] ?? 0;
            $rent_total = $indexed[$day]['rent_total'] ?? 0;

            $series_total[] = $total;
            $series_count[] = $count;
            $new_count_array[] = $new_count;
            $old_count_array[] = $old_count;
            $rent_count_array[] = $rent_count;
            $new_total_array[] = $new_total;
            $old_total_array[] = $old_total;
            $rent_total_array[] = $rent_total;

        }

        $data = [
            'xAxis' => $xAxis,
            'series' => [
                'total' => $series_total,
                'count' => $series_count,
                'new_count' => $new_count_array,
                'old_count' => $old_count_array,
                'rent_count' => $rent_count_array,
                'new_total' => $new_total_array,
                'old_total' => $old_total_array,
                'rent_total' => $rent_total_array,
            ],
        ];


        // 判断是否需要按月归档
        if (count($data['xAxis']) > 31) {
            $monthly = [];

            foreach ($data['xAxis'] as $i => $date) {
                $month = date('Y-m', strtotime($date));

                if (!isset($monthly[$month])) {
                    $monthly[$month] = [
                        'total' => 0,
                        'count' => 0,
                        'performance' => 0,
                        'rate_sum' => 0,
                        'rate_count' => 0,
                    ];
                }

                $monthly[$month]['total'] += $data['series']['total'][$i];
                $monthly[$month]['count'] += $data['series']['count'][$i];
                $monthly[$month]['performance'] += $data['series']['performance'][$i];

                // 处理 rate（字符串，转换为 float）
                $rate = (float)$data['series']['rate'][$i];
                $monthly[$month]['rate_sum'] += $rate;
                $monthly[$month]['rate_count'] += 1;
            }

            // 重新生成 xAxis 和 series
            $data['xAxis'] = array_keys($monthly);
            $data['series'] = [
                'total' => [],
                'count' => [],
                'performance' => [],
                'rate' => []
            ];

            foreach ($monthly as $month => $values) {
                $data['series']['total'][] = $values['total'];
                $data['series']['count'][] = $values['count'];
                $data['series']['performance'][] = $values['performance'];

                // 平均 rate，保留 2 位小数
                $averageRate = $values['rate_count'] > 0 ? $values['rate_sum'] / $values['rate_count'] : 0;
                $data['series']['rate'][] = number_format($averageRate, 2);
            }
        }

        return $data;
    }

    private function getTopTotal($start, $end_at)
    {
        $car_num = Db::query('SELECT 
COUNT(IF(car_type = 1,1,null)) new_car,
COUNT(IF(car_type = 3,1,null)) rent_car,
COUNT(IF(car_type = 2,1,null)) old_car
 FROM cars;')[0];


        $start = now()->modify('-30 days')->format('Y-m-d');
        $end_at = now()->format('Y-m-d 23:29:59');

        $filter = request()->get('range', '');
        if (!empty($filter)) {
            $arr = explode(' - ', $filter);
            if (trim($arr[0])) {
                $start = trim($arr[0]) . ' 00:00:00';
            }
            if (trim($arr[1])) {
                $end_at = trim($arr[1]) . ' 23:29:59';
            }
        }

        $build = new Sales();
        $build->whereBetween('finish_at', [$start, $end_at]);

        $group = \model('auth_group_access')->where('uid', $this->auth->id)->find()->group_id ?? 0;

        if (!in_array($group, [1, 2])) {
            $build->where('saler_id', $this->auth->id);
        }
        $sale = $build->field([
            "count(if(type=1,1,null)) new_count",
            "count(if(type=2,1,null)) old_count",
            "count(if(type=3,1,null)) rent_count",
            "sum(if(type=1,total_price,0)) new_sum",
            "sum(if(type=2,total_price,0)) old_sum",
            "sum(if(type=3,total_price,0)) rent_sum",
            "sum(total_price) total_price",
        ])->select()[0]->toArray();

        return [
            ...$car_num, ...$sale
        ];
    }

    private function getLines($start, $end_at)
    {
        $build = new Sales();
        $build->whereBetween('finish_at', [$start, $end_at]);
        $res = $build->field([
            'DATE(finish_at) day',
            "count(if(type=1,1,null)) new_count",
            "count(if(type=2,1,null)) old_count",
            "count(if(type=3,1,null)) rent_count",
            "sum(if(type=1,total_price,0)) new_total",
            "sum(if(type=2,total_price,0)) old_total",
            "sum(if(type=3,total_price,0)) rent_total",
            'sum(total_price) total',
            'count(id) count',
        ])->group('DATE(finish_at)')
            ->select();

        $data = [];
        foreach ($res as $re) {
            $re = $re->getData();
            $data [] = $re;
        }
        return $this->prepareEchartsBarData($data, $start, $end_at);
    }

}