<?php

namespace App\Console\Commands;

use App\Enums\PayrollAdjustmentType;
use App\Enums\Role;
use App\Models\Attendance;
use App\Models\Employee;
use App\Models\LeaveRequest;
use App\Models\Payroll;
use App\Models\PayrollPeriod;
use App\Models\User;
use App\Settings\HrSettings;
use Carbon\Carbon;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

class ApplyAttendancePenalties extends Command
{
    protected $signature = 'attendance:apply-penalties {--date= : Tanggal yang diproses (default: kemarin)}';

    protected $description = 'Buat potongan gaji otomatis untuk keterlambatan dan bolos';

    public function handle(): int
    {
        $date = $this->option('date')
            ? Carbon::parse($this->option('date'))->startOfDay()
            : Carbon::yesterday()->startOfDay();

        $settings = app(HrSettings::class);
        $latePenalty = $settings->late_penalty_amount;
        $absentPenalty = $settings->absent_penalty_amount;
        $scheduledTime = $settings->scheduled_check_in_time;

        if ($latePenalty <= 0 && $absentPenalty <= 0) {
            $this->info('Denda keterlambatan dan bolos belum diatur (0). Lewatkan.');

            return self::SUCCESS;
        }

        $scheduledCheckIn = Carbon::createFromFormat('Y-m-d H:i', $date->format('Y-m-d').' '.$scheduledTime);
        $createdBy = $this->resolveSystemUser();

        if ($createdBy === null) {
            $this->error('Tidak ditemukan user sistem (developer/owner) untuk mencatat penalti.');

            return self::FAILURE;
        }

        $employees = Employee::query()
            ->whereHas('user', fn ($query) => $query->active())
            ->get();

        $lateCount = 0;
        $absentCount = 0;
        $skippedLeave = 0;
        $skippedDuplicate = 0;

        try {
            DB::transaction(function () use ($employees, $date, $scheduledCheckIn, $latePenalty, $absentPenalty, $createdBy, &$lateCount, &$absentCount, &$skippedLeave, &$skippedDuplicate): void {
                foreach ($employees as $employee) {
                    $hasLeave = LeaveRequest::query()
                        ->approved()
                        ->where('employee_id', $employee->id)
                        ->whereDate('start_date', '<=', $date)
                        ->whereDate('end_date', '>=', $date)
                        ->exists();

                    if ($hasLeave) {
                        $skippedLeave++;

                        continue;
                    }

                    $attendance = Attendance::query()
                        ->where('employee_id', $employee->id)
                        ->whereDate('attendance_date', $date)
                        ->first();

                    if ($attendance === null) {
                        if ($absentPenalty <= 0) {
                            continue;
                        }

                        $payroll = $this->findOpenPayroll($employee->id);

                        if ($payroll === null) {
                            continue;
                        }

                        $alreadyExists = $payroll->adjustments()
                            ->whereNull('attendance_id')
                            ->deduction()
                            ->where('description', 'like', "%Bolos {$date->format('d/m/Y')}%")
                            ->exists();

                        if ($alreadyExists) {
                            $skippedDuplicate++;

                            continue;
                        }

                        $payroll->adjustments()->create([
                            'type' => PayrollAdjustmentType::DEDUCTION,
                            'amount' => $absentPenalty,
                            'description' => "Bolos {$date->format('d/m/Y')}",
                            'created_by_id' => $createdBy->id,
                        ]);

                        $payroll->load('adjustments');
                        $payroll->recalculateAmounts();
                        $payroll->save();

                        $absentCount++;

                        continue;
                    }

                    if ($latePenalty <= 0) {
                        continue;
                    }

                    $checkInTime = Carbon::parse($attendance->check_in_at);

                    if ($checkInTime->lte($scheduledCheckIn)) {
                        continue;
                    }

                    $payroll = $this->findOpenPayroll($employee->id);

                    if ($payroll === null) {
                        continue;
                    }

                    $alreadyExists = $payroll->adjustments()
                        ->where('attendance_id', $attendance->id)
                        ->where('type', PayrollAdjustmentType::DEDUCTION)
                        ->exists();

                    if ($alreadyExists) {
                        $skippedDuplicate++;

                        continue;
                    }

                    $minutesLate = (int) $scheduledCheckIn->diffInMinutes($checkInTime);

                    $payroll->adjustments()->create([
                        'type' => PayrollAdjustmentType::DEDUCTION,
                        'amount' => $latePenalty,
                        'description' => "Terlambat {$date->format('d/m/Y')} ({$minutesLate} menit)",
                        'attendance_id' => $attendance->id,
                        'created_by_id' => $createdBy->id,
                    ]);

                    $payroll->load('adjustments');
                    $payroll->recalculateAmounts();
                    $payroll->save();

                    $lateCount++;
                }
            });
        } catch (\Throwable $e) {
            Log::error("Gagal menerapkan penalti presensi: {$e->getMessage()}", [
                'trace' => $e->getTraceAsString(),
            ]);

            $this->error('Gagal menerapkan penalti presensi: '.$e->getMessage());

            return self::FAILURE;
        }

        $this->info("Selesai memproses tanggal {$date->format('d/m/Y')}:");
        $this->info("  - Terlambat: {$lateCount} pegawai");
        $this->info("  - Bolos: {$absentCount} pegawai");
        $this->info("  - Lewati (cuti): {$skippedLeave} pegawai");
        $this->info("  - Lewati (duplikat): {$skippedDuplicate} pegawai");

        return self::SUCCESS;
    }

    private function findOpenPayroll(int $employeeId): ?Payroll
    {
        $period = PayrollPeriod::query()->open()->first();

        if ($period === null) {
            return null;
        }

        return Payroll::query()
            ->where('payroll_period_id', $period->id)
            ->where('employee_id', $employeeId)
            ->first();
    }

    private function resolveSystemUser(): ?User
    {
        return User::query()
            ->whereHas('roles', fn ($query) => $query->whereIn('name', [Role::DEVELOPER->value, Role::OWNER->value]))
            ->first()
            ?? User::query()->first();
    }
}