<?php

namespace App\Module\Transfer\Commands;

use App\Module\Transfer\Models\TransferOrder;
use App\Module\Transfer\Models\TransferApp;
use App\Module\Transfer\Enums\TransferStatus;
use App\Module\Transfer\Enums\TransferType;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;

/**
 * Transfer统计命令
 */
class TransferStatsCommand extends Command
{
    /**
     * 命令签名
     */
    protected $signature = 'transfer:stats 
                            {--period=today : 统计周期 (today|yesterday|week|month)}
                            {--app= : 指定应用ID}
                            {--export= : 导出到文件}';

    /**
     * 命令描述
     */
    protected $description = '显示Transfer模块的统计信息';

    /**
     * 执行命令
     */
    public function handle(): int
    {
        $period = $this->option('period');
        $appId = $this->option('app');
        $exportFile = $this->option('export');

        $this->info("Transfer模块统计报告 - {$period}");
        $this->line(str_repeat('=', 60));

        try {
            // 获取时间范围
            [$startDate, $endDate] = $this->getDateRange($period);
            
            $this->info("统计时间: {$startDate} 至 {$endDate}");
            $this->line('');

            // 基础统计
            $this->showBasicStats($startDate, $endDate, $appId);
            
            // 按应用统计
            $this->showAppStats($startDate, $endDate, $appId);
            
            // 按状态统计
            $this->showStatusStats($startDate, $endDate, $appId);
            
            // 按小时统计（仅当日）
            if ($period === 'today') {
                $this->showHourlyStats($startDate, $endDate, $appId);
            }

            // 导出数据
            if ($exportFile) {
                $this->exportStats($startDate, $endDate, $appId, $exportFile);
            }

            return 0;

        } catch (\Exception $e) {
            $this->error("统计失败: " . $e->getMessage());
            return 1;
        }
    }

    /**
     * 获取日期范围
     */
    private function getDateRange(string $period): array
    {
        return match ($period) {
            'today' => [
                now()->startOfDay()->toDateTimeString(),
                now()->endOfDay()->toDateTimeString()
            ],
            'yesterday' => [
                now()->subDay()->startOfDay()->toDateTimeString(),
                now()->subDay()->endOfDay()->toDateTimeString()
            ],
            'week' => [
                now()->startOfWeek()->toDateTimeString(),
                now()->endOfWeek()->toDateTimeString()
            ],
            'month' => [
                now()->startOfMonth()->toDateTimeString(),
                now()->endOfMonth()->toDateTimeString()
            ],
            default => throw new \InvalidArgumentException("无效的统计周期: {$period}")
        };
    }

    /**
     * 显示基础统计
     */
    private function showBasicStats(string $startDate, string $endDate, ?string $appId): void
    {
        $query = TransferOrder::whereBetween('created_at', [$startDate, $endDate]);
        
        if ($appId) {
            $query->where('transfer_app_id', $appId);
        }

        $totalOrders = $query->count();
        $totalAmount = $query->sum('amount');
        
        $inOrders = (clone $query)->where('type', TransferType::IN)->count();
        $outOrders = (clone $query)->where('type', TransferType::OUT)->count();
        
        $inAmount = (clone $query)->where('type', TransferType::IN)->sum('amount');
        $outAmount = (clone $query)->where('type', TransferType::OUT)->sum('amount');
        
        $completedOrders = (clone $query)->where('status', TransferStatus::COMPLETED)->count();
        $failedOrders = (clone $query)->where('status', TransferStatus::FAILED)->count();

        $this->info('基础统计:');
        $this->table(
            ['指标', '数值'],
            [
                ['总订单数', number_format($totalOrders)],
                ['总金额', number_format($totalAmount, 2)],
                ['转入订单', number_format($inOrders)],
                ['转出订单', number_format($outOrders)],
                ['转入金额', number_format($inAmount, 2)],
                ['转出金额', number_format($outAmount, 2)],
                ['成功订单', number_format($completedOrders)],
                ['失败订单', number_format($failedOrders)],
                ['成功率', $totalOrders > 0 ? number_format($completedOrders / $totalOrders * 100, 2) . '%' : '0%'],
            ]
        );
        $this->line('');
    }

    /**
     * 显示按应用统计
     */
    private function showAppStats(string $startDate, string $endDate, ?string $appId): void
    {
        $query = DB::table('transfer_orders as o')
            ->join('transfer_apps as a', 'o.transfer_app_id', '=', 'a.id')
            ->whereBetween('o.created_at', [$startDate, $endDate])
            ->select([
                'a.title as app_name',
                DB::raw('COUNT(*) as total_orders'),
                DB::raw('SUM(o.amount) as total_amount'),
                DB::raw('SUM(CASE WHEN o.type = 1 THEN 1 ELSE 0 END) as in_orders'),
                DB::raw('SUM(CASE WHEN o.type = 2 THEN 1 ELSE 0 END) as out_orders'),
                DB::raw('SUM(CASE WHEN o.status = 100 THEN 1 ELSE 0 END) as completed_orders'),
            ])
            ->groupBy('a.id', 'a.title')
            ->orderBy('total_amount', 'desc');

        if ($appId) {
            $query->where('a.id', $appId);
        }

        $stats = $query->get();

        if ($stats->isNotEmpty()) {
            $this->info('按应用统计:');
            $this->table(
                ['应用名称', '总订单', '总金额', '转入', '转出', '成功', '成功率'],
                $stats->map(function ($stat) {
                    $successRate = $stat->total_orders > 0 
                        ? number_format($stat->completed_orders / $stat->total_orders * 100, 1) . '%'
                        : '0%';
                    
                    return [
                        $stat->app_name,
                        number_format($stat->total_orders),
                        number_format($stat->total_amount, 2),
                        number_format($stat->in_orders),
                        number_format($stat->out_orders),
                        number_format($stat->completed_orders),
                        $successRate,
                    ];
                })
            );
            $this->line('');
        }
    }

    /**
     * 显示按状态统计
     */
    private function showStatusStats(string $startDate, string $endDate, ?string $appId): void
    {
        $query = TransferOrder::whereBetween('created_at', [$startDate, $endDate])
            ->select([
                'status',
                DB::raw('COUNT(*) as count'),
                DB::raw('SUM(amount) as amount')
            ])
            ->groupBy('status')
            ->orderBy('status');

        if ($appId) {
            $query->where('transfer_app_id', $appId);
        }

        $stats = $query->get();

        if ($stats->isNotEmpty()) {
            $this->info('按状态统计:');
            $this->table(
                ['状态', '订单数', '金额'],
                $stats->map(function ($stat) {
                    $status = TransferStatus::from($stat->status);
                    return [
                        $status->getDescription(),
                        number_format($stat->count),
                        number_format($stat->amount, 2),
                    ];
                })
            );
            $this->line('');
        }
    }

    /**
     * 显示按小时统计
     */
    private function showHourlyStats(string $startDate, string $endDate, ?string $appId): void
    {
        $query = TransferOrder::whereBetween('created_at', [$startDate, $endDate])
            ->select([
                DB::raw('HOUR(created_at) as hour'),
                DB::raw('COUNT(*) as count'),
                DB::raw('SUM(amount) as amount')
            ])
            ->groupBy(DB::raw('HOUR(created_at)'))
            ->orderBy('hour');

        if ($appId) {
            $query->where('transfer_app_id', $appId);
        }

        $stats = $query->get();

        if ($stats->isNotEmpty()) {
            $this->info('按小时统计:');
            $this->table(
                ['小时', '订单数', '金额'],
                $stats->map(function ($stat) {
                    return [
                        sprintf('%02d:00', $stat->hour),
                        number_format($stat->count),
                        number_format($stat->amount, 2),
                    ];
                })
            );
            $this->line('');
        }
    }

    /**
     * 导出统计数据
     */
    private function exportStats(string $startDate, string $endDate, ?string $appId, string $filename): void
    {
        $this->info("正在导出统计数据到 {$filename}...");
        
        // 这里可以实现CSV或Excel导出逻辑
        $this->info('导出功能待实现');
    }
}