<?php

namespace App\Module\Transfer\AdminControllers\Metrics;

use UCore\DcatAdmin\Metrics\Examples\NewUsersDou;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use App\Module\Transfer\Models\TransferOrder;
use App\Module\Transfer\Enums\TransferType;
use App\Module\Transfer\Enums\TransferStatus;
use Carbon\Carbon;

/**
 * 每日转入转出统计折线图
 * 显示每日转入和转出的数量和金额趋势
 */
class DailyTransferChart extends NewUsersDou
{
    /**
     * 图表默认高度
     *
     * @var int
     */
    protected $chartHeight = 200;

    /**
     * 初始化卡片内容
     */
    protected function init()
    {
        parent::init();

        $this->title('每日转入/转出统计');
        $this->dropdown([
            '7' => '最近 7 天',
            '14' => '最近 14 天',
            '30' => '最近 30 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);
        $chartData = $this->getTransferData($days);
        
        // 计算总交易数量作为卡片内容
        $totalTransfers = array_sum($chartData['data']['transfer_in']) + array_sum($chartData['data']['transfer_out']);
        
        // 卡片内容
        $this->withContent(number_format($totalTransfers));
        
        // 图表数据
        $this->withChart($chartData['series'], $chartData['categories']);
    }

    /**
     * 获取转账统计数据
     *
     * @param int $days
     * @return array
     */
    protected function getTransferData(int $days): array
    {
        // 生成日期范围
        $endDate = Carbon::today();
        $startDate = $endDate->copy()->subDays($days - 1);
        
        $dates = [];
        for ($date = $startDate->copy(); $date->lte($endDate); $date->addDay()) {
            $dates[] = $date->format('Y-m-d');
        }

        // 查询转账数据 - 按日期和类型分组统计
        $transferData = DB::table('transfer_orders')
            ->select([
                DB::raw('DATE(created_at) as date'),
                'type',
                DB::raw('COUNT(*) as count'),
                DB::raw('SUM(amount) as total_amount'),
                DB::raw('SUM(actual_amount) as total_actual_amount')
            ])
            ->where('status', TransferStatus::COMPLETED->value) // 只统计已完成的订单
            ->where('created_at', '>=', $startDate)
            ->where('created_at', '<=', $endDate->endOfDay())
            ->groupBy(['date', 'type'])
            ->orderBy('date')
            ->get()
            ->groupBy(['date', 'type']);

        // 构建图表数据
        $transferInCounts = [];
        $transferOutCounts = [];
        $transferInAmounts = [];
        $transferOutAmounts = [];
        
        foreach ($dates as $date) {
            $dayData = $transferData->get($date, collect());
            
            // 转入数据
            $transferInData = $dayData->get(TransferType::IN->value, collect())->first();
            $transferInCounts[] = $transferInData ? (int)$transferInData->count : 0;
            $transferInAmounts[] = $transferInData ? (float)$transferInData->total_actual_amount : 0;
            
            // 转出数据
            $transferOutData = $dayData->get(TransferType::OUT->value, collect())->first();
            $transferOutCounts[] = $transferOutData ? (int)$transferOutData->count : 0;
            $transferOutAmounts[] = $transferOutData ? (float)$transferOutData->total_actual_amount : 0;
        }

        // 构建多线图表数据
        $series = [
            [
                'name' => '转入笔数',
                'data' => $transferInCounts,
                'color' => '#28a745', // 绿色
            ],
            [
                'name' => '转出笔数',
                'data' => $transferOutCounts,
                'color' => '#dc3545', // 红色
            ],
            [
                'name' => '转入金额',
                'data' => $transferInAmounts,
                'color' => '#17a2b8', // 蓝色
                'yAxis' => 1, // 使用第二个Y轴
            ],
            [
                'name' => '转出金额',
                'data' => $transferOutAmounts,
                'color' => '#fd7e14', // 橙色
                'yAxis' => 1, // 使用第二个Y轴
            ],
        ];

        return [
            'series' => $series,
            'categories' => $dates,
            'data' => [
                'transfer_in' => $transferInCounts,
                'transfer_out' => $transferOutCounts,
                'transfer_in_amounts' => $transferInAmounts,
                'transfer_out_amounts' => $transferOutAmounts,
            ],
        ];
    }

    /**
     * 设置图表数据
     *
     * @param array $series
     * @param array $categories
     * @return $this
     */
    public function withChart(array $series, array $categories = [])
    {
        return $this->chart([
            'series' => $series,
            'xaxis' => [
                'categories' => $categories,
                'title' => [
                    'text' => '日期'
                ]
            ],
            'yaxis' => [
                [
                    'title' => [
                        'text' => '交易笔数'
                    ],
                    'labels' => [
                        'formatter' => 'function(val) { return val.toFixed(0); }'
                    ]
                ],
                [
                    'opposite' => true,
                    'title' => [
                        'text' => '交易金额'
                    ],
                    'labels' => [
                        'formatter' => 'function(val) { return val.toFixed(2); }'
                    ]
                ]
            ],
            'tooltip' => [
                'shared' => true,
                'intersect' => false,
            ],
            'legend' => [
                'position' => 'top',
                'horizontalAlign' => 'left'
            ]
        ]);
    }
}