<?php

namespace App\Module\Transfer\Logics;

use App\Module\Transfer\Models\TransferApp;
use App\Module\Transfer\Models\TransferOrder;
use App\Module\Transfer\Models\TransferFeeDailyStats;
use App\Module\Transfer\Enums\TransferStatus;
use App\Module\Transfer\Enums\TransferType;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;
use Carbon\Carbon;

/**
 * 手续费统计逻辑类
 *
 * 处理手续费统计的核心业务逻辑
 */
class FeeStatisticsLogic
{
    /**
     * 执行每日手续费统计
     *
     * @param string $date 统计日期
     * @return array
     */
    public static function runDailyStatistics(string $date): array
    {
        $apps = TransferApp::where('is_enabled', true)->get();
        $processedApps = [];
        $totalOrders = 0;
        $totalFee = '0.0000000000';

        foreach ($apps as $app) {
            $result = self::processAppStatistics($app, $date);
            $processedApps[] = $result;
            $totalOrders += $result['total_orders'];
            $totalFee = bcadd($totalFee, $result['total_fee'], 10);
        }

        return [
            'date' => $date,
            'apps' => $processedApps,
            'summary' => [
                'processed_apps' => count($processedApps),
                'total_orders' => $totalOrders,
                'total_fee' => $totalFee
            ]
        ];
    }

    /**
     * 处理单个应用的统计
     *
     * @param TransferApp $app 应用
     * @param string $date 统计日期
     * @return array
     */
    public static function processAppStatistics(TransferApp $app, string $date): array
    {
        // 构建当天的时间范围
        $startTime = $date . ' 00:00:00';
        $endTime = $date . ' 23:59:59';

        // 查询当天完成的所有订单
        $orders = TransferOrder::where('transfer_app_id', $app->id)
            ->where('status', TransferStatus::COMPLETED)
            ->whereBetween('completed_at', [$startTime, $endTime])
            ->orderBy('id')
            ->get();

        if ($orders->isEmpty()) {
            return [
                'app_id' => $app->id,
                'app_name' => $app->keyname,
                'total_orders' => 0,
                'total_fee' => '0.0000000000',
                'message' => '当天无已完成订单'
            ];
        }

        // 计算统计数据
        $stats = self::calculateOrderStats($orders);
        $stats['stat_date'] = $date;
        $stats['transfer_app_id'] = $app->id;

        // 保存统计数据
        TransferFeeDailyStats::createOrUpdate($stats);

        return [
            'app_id' => $app->id,
            'app_name' => $app->keyname,
            'total_orders' => $stats['total_order_count'],
            'total_fee' => $stats['total_fee_amount'],
            'message' => '统计完成'
        ];
    }

    /**
     * 计算订单统计数据
     *
     * @param \Illuminate\Database\Eloquent\Collection $orders 订单集合
     * @return array
     */
    public static function calculateOrderStats($orders): array
    {
        $inOrders = $orders->where('type', TransferType::IN);
        $outOrders = $orders->where('type', TransferType::OUT);

        // 转入统计
        $inOrderCount = $inOrders->count();
        $inTotalAmount = $inOrders->sum('amount');
        $inFeeAmount = $inOrders->sum('fee_amount');
        $inAvgFeeRate = $inOrderCount > 0 ? $inOrders->avg('fee_rate') : 0;

        // 转出统计
        $outOrderCount = $outOrders->count();
        $outTotalAmount = $outOrders->sum('amount');
        $outFeeAmount = $outOrders->sum('fee_amount');
        $outAvgFeeRate = $outOrderCount > 0 ? $outOrders->avg('fee_rate') : 0;

        // 总计统计
        $totalOrderCount = $orders->count();
        $totalAmount = $orders->sum('amount');
        $totalFeeAmount = $orders->sum('fee_amount');
        $avgFeeRate = $totalOrderCount > 0 ? $orders->avg('fee_rate') : 0;

        return [
            'in_order_count' => $inOrderCount,
            'in_total_amount' => $inTotalAmount,
            'in_fee_amount' => $inFeeAmount,
            'in_avg_fee_rate' => $inAvgFeeRate,
            'out_order_count' => $outOrderCount,
            'out_total_amount' => $outTotalAmount,
            'out_fee_amount' => $outFeeAmount,
            'out_avg_fee_rate' => $outAvgFeeRate,
            'total_order_count' => $totalOrderCount,
            'total_amount' => $totalAmount,
            'total_fee_amount' => $totalFeeAmount,
            'avg_fee_rate' => $avgFeeRate,
        ];
    }

    /**
     * 获取指定日期范围的统计数据
     *
     * @param string $startDate 开始日期
     * @param string $endDate 结束日期
     * @param int $appId 应用ID
     * @return array
     */
    public static function getStatsByDateRange(string $startDate, string $endDate, int $appId ): array
    {
        $data = TransferFeeDailyStats::getByDateRange($startDate, $endDate, $appId);

        // 计算汇总数据
        $summary = [
            'total_days' => $data->count(),
            'total_orders' => $data->sum('total_order_count'),
            'total_amount' => $data->sum('total_amount'),
            'total_fee' => $data->sum('total_fee_amount'),
            'avg_fee_rate' => $data->avg('avg_fee_rate'),
            'total_in_orders' => $data->sum('in_order_count'),
            'total_in_fee' => $data->sum('in_fee_amount'),
            'total_out_orders' => $data->sum('out_order_count'),
            'total_out_fee' => $data->sum('out_fee_amount'),
        ];

        return [
            'data' => $data->toArray(),
            'summary' => $summary,
            'date_range' => [
                'start' => $startDate,
                'end' => $endDate
            ]
        ];
    }

    /**
     * 获取月度统计数据
     *
     * @param int $year 年份
     * @param int $month 月份
     * @param int $appId 应用ID
     * @return array
     */
    public static function getMonthlyStats(int $year, int $month, int $appId = 0): array
    {
        return TransferFeeDailyStats::getMonthlyStats($year, $month, $appId);
    }

    /**
     * 获取应用汇总统计
     *
     * @param int $appId 应用ID
     * @return array
     */
    public static function getAppSummary(int $appId = 0): array
    {
        $data = TransferFeeDailyStats::getAppSummary($appId);

        return [
            'data' => $data,
            'total_apps' => count($data)
        ];
    }

    /**
     * 获取手续费收入排行榜
     *
     * @param string $startDate 开始日期
     * @param string $endDate 结束日期
     * @param int $limit 限制数量
     * @return array
     */
    public static function getFeeRanking(string $startDate, string $endDate, int $limit = 10): array
    {
        $data = TransferFeeDailyStats::with('transferApp')
            ->whereBetween('stat_date', [$startDate, $endDate])
            ->selectRaw('
                transfer_app_id,
                SUM(total_fee_amount) as total_fee,
                SUM(total_order_count) as total_orders,
                AVG(avg_fee_rate) as avg_fee_rate
            ')
            ->groupBy('transfer_app_id')
            ->orderBy('total_fee', 'desc')
            ->limit($limit)
            ->get();

        return [
            'data' => $data->toArray(),
            'date_range' => [
                'start' => $startDate,
                'end' => $endDate
            ]
        ];
    }

    /**
     * 重新统计指定日期的数据
     *
     * @param string $date 统计日期
     * @param int $appId 应用ID
     * @return array
     */
    public static function restatistics(string $date, int $appId = 0): array
    {
        if ($appId > 0) {
            // 重新统计指定应用
            $app = TransferApp::findOrFail($appId);

            // 删除原有统计数据
            TransferFeeDailyStats::where('stat_date', $date)
                ->where('transfer_app_id', $appId)
                ->delete();

            // 重新统计
            $result = self::processAppStatistics($app, $date);

            return [
                'date' => $date,
                'app_id' => $appId,
                'result' => $result
            ];
        } else {
            // 重新统计所有应用
            TransferFeeDailyStats::where('stat_date', $date)->delete();

            return self::runDailyStatistics($date);
        }
    }

    /**
     * 验证统计数据的完整性
     *
     * @param string $date 检查日期
     * @return array
     */
    public static function validateStatistics(string $date): array
    {
        $apps = TransferApp::where('is_enabled', true)->get();
        $validationResults = [];
        $allValid = true;

        foreach ($apps as $app) {
            $statsRecord = TransferFeeDailyStats::getByDateAndApp($date, $app->id);

            if (!$statsRecord) {
                $validationResults[] = [
                    'app_id' => $app->id,
                    'app_name' => $app->keyname,
                    'valid' => false,
                    'message' => '缺少统计记录'
                ];
                $allValid = false;
                continue;
            }

            // 验证订单数据一致性 - 使用时间范围查询
            $startTime = $date . ' 00:00:00';
            $endTime = $date . ' 23:59:59';

            $actualOrders = TransferOrder::where('transfer_app_id', $app->id)
                ->where('status', TransferStatus::COMPLETED)
                ->whereBetween('completed_at', [$startTime, $endTime])
                ->get();

            $actualStats = self::calculateOrderStats($actualOrders);

            $isValid = (
                $statsRecord->total_order_count == $actualStats['total_order_count'] &&
                bccomp($statsRecord->total_fee_amount, $actualStats['total_fee_amount'], 10) == 0
            );

            $validationResults[] = [
                'app_id' => $app->id,
                'app_name' => $app->keyname,
                'valid' => $isValid,
                'message' => $isValid ? '数据一致' : '数据不一致',
                'recorded_orders' => $statsRecord->total_order_count,
                'actual_orders' => $actualStats['total_order_count'],
                'recorded_fee' => $statsRecord->total_fee_amount,
                'actual_fee' => $actualStats['total_fee_amount']
            ];

            if (!$isValid) {
                $allValid = false;
            }
        }

        return [
            'date' => $date,
            'valid' => $allValid,
            'details' => $validationResults
        ];
    }
}