<?php

namespace App\Services;

use App\Models\Commons\File;
use App\Models\HR\Employee;
use App\Models\Tenants\Tenant;
use Illuminate\Support\Str;
use PhpOffice\PhpWord\TemplateProcessor;

class EmploymentCertService
{
    /**
     * 사원의 재직증명서 정보 조회
     */
    public function getCertInfo(int $userId, int $tenantId): array
    {
        $employee = Employee::withoutGlobalScopes()
            ->where('tenant_id', $tenantId)
            ->where('user_id', $userId)
            ->with(['user', 'department'])
            ->firstOrFail();

        $tenant = Tenant::findOrFail($tenantId);

        $residentNumber = $employee->resident_number;
        $maskedResident = $residentNumber
            ? substr($residentNumber, 0, 8).'******'
            : '';

        return [
            'name' => $employee->user->name ?? $employee->display_name ?? '',
            'resident_number' => $maskedResident,
            'resident_number_full' => $residentNumber ?? '',
            'address' => $employee->address ?? '',
            'department' => $employee->department?->name ?? '',
            'position' => $employee->position_label ?? '',
            'hire_date' => $employee->hire_date ?? '',
            'company_name' => $tenant->company_name ?? '',
            'business_num' => $tenant->business_num ?? '',
            'ceo_name' => $tenant->ceo_name ?? '',
            'phone' => $tenant->phone ?? '',
            'company_address' => $tenant->address ?? '',
        ];
    }

    /**
     * DOCX 생성
     */
    public function generateDocx(array $data, int $tenantId): string
    {
        $templatePath = storage_path('app/templates/employment_cert.docx');

        if (! file_exists($templatePath)) {
            throw new \RuntimeException('재직증명서 템플릿 파일이 없습니다.');
        }

        $template = new TemplateProcessor($templatePath);

        $hireDateFormatted = '';
        if (! empty($data['hire_date'])) {
            try {
                $hireDateFormatted = date('Y년 m월 d일', strtotime($data['hire_date']));
            } catch (\Throwable) {
                $hireDateFormatted = $data['hire_date'];
            }
        }

        $issueDateFormatted = date('Y년 m월 d일');

        $template->setValue('name', $data['name'] ?? '');
        $template->setValue('resident_number', $data['resident_number_full'] ?? '');
        $template->setValue('address', $data['address'] ?? '');
        $template->setValue('company_name', $data['company_name'] ?? '');
        $template->setValue('business_num', $data['business_num'] ?? '');
        $template->setValue('ceo_name', $data['ceo_name'] ?? '');
        $template->setValue('phone', $data['phone'] ?? '');
        $template->setValue('company_address', $data['company_address'] ?? '');
        $template->setValue('department', $data['department'] ?? '');
        $template->setValue('position', $data['position'] ?? '');
        $template->setValue('hire_date', $hireDateFormatted);
        $template->setValue('purpose', $data['purpose'] ?? '');
        $template->setValue('issue_date', $issueDateFormatted);

        $outputDir = storage_path("app/approvals/{$tenantId}");
        if (! is_dir($outputDir)) {
            mkdir($outputDir, 0755, true);
        }

        $fileName = '재직증명서_'.($data['name'] ?? 'unknown').'_'.date('Ymd').'.docx';
        $storedName = Str::random(40).'.docx';
        $storagePath = "approvals/{$tenantId}/{$storedName}";
        $fullPath = storage_path("app/{$storagePath}");

        $template->saveAs($fullPath);

        return $storagePath;
    }

    /**
     * 파일 레코드 생성 및 approval에 첨부
     */
    public function createFileRecord(string $storagePath, string $displayName, int $tenantId): File
    {
        $fullPath = storage_path("app/{$storagePath}");

        return File::create([
            'tenant_id' => $tenantId,
            'document_type' => 'approval_attachment',
            'display_name' => $displayName,
            'original_name' => $displayName,
            'stored_name' => basename($storagePath),
            'file_path' => $storagePath,
            'mime_type' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
            'file_size' => filesize($fullPath),
            'file_type' => 'docx',
            'is_temp' => false,
            'uploaded_by' => auth()->id(),
        ]);
    }
}