<?php

namespace App\Services\Stats;

use App\Models\Stats\Monthly\StatProjectMonthly;
use Carbon\Carbon;
use Illuminate\Support\Facades\DB;

class ProjectStatService implements StatDomainServiceInterface
{
    public function aggregateDaily(int $tenantId, Carbon $date): int
    {
        // 건설/프로젝트는 월간 전용 (일간 집계 없음)
        return 0;
    }

    public function aggregateMonthly(int $tenantId, int $year, int $month): int
    {
        $startDate = Carbon::create($year, $month, 1)->startOfDay();
        $endDate = $startDate->copy()->endOfMonth();

        // 현장 현황
        $activeSites = DB::connection('mysql')
            ->table('sites')
            ->where('tenant_id', $tenantId)
            ->where('status', 'active')
            ->whereNull('deleted_at')
            ->count();

        $completedSites = DB::connection('mysql')
            ->table('sites')
            ->where('tenant_id', $tenantId)
            ->where('status', 'completed')
            ->whereNull('deleted_at')
            ->count();

        // 계약 현황 (해당 월 신규 계약)
        $contractStats = DB::connection('mysql')
            ->table('contracts')
            ->where('tenant_id', $tenantId)
            ->whereBetween('created_at', [$startDate, $endDate])
            ->whereNull('deleted_at')
            ->selectRaw('
                COUNT(*) as new_count,
                COALESCE(SUM(contract_amount), 0) as total_amount
            ')
            ->first();

        // 지출예상 (해당 월)
        $expenseStats = DB::connection('mysql')
            ->table('expected_expenses')
            ->where('tenant_id', $tenantId)
            ->whereYear('expected_payment_date', $year)
            ->whereMonth('expected_payment_date', $month)
            ->whereNull('deleted_at')
            ->selectRaw('
                COALESCE(SUM(amount), 0) as expected_total,
                COALESCE(SUM(CASE WHEN payment_status = \'paid\' THEN amount ELSE 0 END), 0) as actual_total
            ')
            ->first();

        // 수익률 계산
        $contractTotal = (float) ($contractStats->total_amount ?? 0);
        $actualExpense = (float) ($expenseStats->actual_total ?? 0);
        $grossProfit = $contractTotal - $actualExpense;
        $grossProfitRate = $contractTotal > 0 ? ($grossProfit / $contractTotal) * 100 : 0;

        StatProjectMonthly::updateOrCreate(
            [
                'tenant_id' => $tenantId,
                'stat_year' => $year,
                'stat_month' => $month,
            ],
            [
                'active_site_count' => $activeSites,
                'completed_site_count' => $completedSites,
                'new_contract_count' => $contractStats->new_count ?? 0,
                'contract_total_amount' => $contractTotal,
                'expected_expense_total' => $expenseStats->expected_total ?? 0,
                'actual_expense_total' => $actualExpense,
                'labor_cost_total' => 0,
                'material_cost_total' => 0,
                'gross_profit' => $grossProfit,
                'gross_profit_rate' => $grossProfitRate,
                'handover_report_count' => 0,
                'structure_review_count' => 0,
            ]
        );

        return 1;
    }
}