<?php

namespace App\Module\UrsPromotion\AdminControllers\Metrics;

use App\Module\UrsPromotion\Models\UrsUserMapping;
use Carbon\Carbon;
use Dcat\Admin\Widgets\Metrics\Line;
use Illuminate\Http\Request;

/**
 * URS新用户折线图
 * 显示每日新用户数量趋势
 */
class UrsNewUsersChart extends Line
{
    /**
     * 初始化卡片内容
     *
     * @return void
     */
    protected function init()
    {
        parent::init();
        
        $this->height(300);
        $this->chartHeight(180);
        
        $this->title('URS新用户趋势');
        $this->dropdown([
            '7'  => '最近 7 天',
            '14' => '最近 14 天',
            '28' => '最近 28 天',
            '90' => '最近 90 天',
        ]);
    }

    /**
     * 处理请求
     *
     * @param Request $request
     *
     * @return mixed|void
     */
    public function handle(Request $request)
    {
        $days = (int) $request->get('option', 7);
        $data = $this->getNewUsersData($days);
        
        // 卡片内容 - 显示总数
        $this->withContent($data['total']);
        
        // 图表数据 - 显示每日数量
        $this->withChart($data['daily']);
    }

    /**
     * 获取新用户数据
     *
     * @param int $days 天数
     * @return array
     */
    private function getNewUsersData(int $days): array
    {
        $endDate = Carbon::today();
        $startDate = $endDate->copy()->subDays($days - 1);
        
        // 获取指定时间范围内的新用户数据
        $newUsers = UrsUserMapping::where('created_at', '>=', $startDate)
            ->where('created_at', '<=', $endDate->endOfDay())
            ->where('status', UrsUserMapping::STATUS_VALID)
            ->selectRaw('DATE(created_at) as date, COUNT(*) as count')
            ->groupBy('date')
            ->orderBy('date')
            ->get()
            ->keyBy('date');
        
        // 构建每日数据数组
        $dailyData = [];
        $totalCount = 0;
        
        for ($i = 0; $i < $days; $i++) {
            $date = $startDate->copy()->addDays($i)->format('Y-m-d');
            $count = $newUsers->get($date)->count ?? 0;
            $dailyData[] = $count;
            $totalCount += $count;
        }
        
        return [
            'total' => number_format($totalCount),
            'daily' => $dailyData,
        ];
    }

    /**
     * 设置图表数据
     *
     * @param array $data
     * @return $this
     */
    public function withChart(array $data)
    {
        return $this->chart([
            'series' => [
                [
                    'name' => $this->title,
                    'data' => $data,
                ],
            ],
        ]);
    }
}