<?php

namespace App\Console\Commands;

use App\Models\Commons\File;
use Illuminate\Console\Attributes\AsCommand;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Storage;

/**
 * 레거시 5130 절곡 이미지 → SAM R2 + files 테이블 마이그레이션
 *
 * 소스: https://5130.codebridge-x.com/bending/img/{imgdata}
 * 대상: R2 저장 + files 테이블 + items.options 업데이트
 */
#[AsCommand(name: 'bending:import-images', description: '레거시 절곡 이미지 → R2 마이그레이션')]
class BendingImportImages extends Command
{
    protected $signature = 'bending:import-images
                            {--tenant_id=287 : Target tenant ID}
                            {--dry-run : 실제 저장 없이 미리보기}
                            {--source=https://5130.codebridge-x.com/bending/img : 이미지 소스 URL}';

    private int $uploaded = 0;

    private int $skipped = 0;

    private int $failed = 0;

    public function handle(): int
    {
        $tenantId = (int) $this->option('tenant_id');
        $dryRun = $this->option('dry-run');
        $sourceBase = rtrim($this->option('source'), '/');

        $this->info('=== 레거시 절곡 이미지 → R2 마이그레이션 ===');
        $this->info('Source: '.$sourceBase);
        $this->info('Mode: '.($dryRun ? 'DRY-RUN' : 'LIVE'));
        $this->newLine();

        // 1. BENDING 아이템에서 legacy_bending_num이 있는 것 조회
        $items = DB::table('items')
            ->where('tenant_id', $tenantId)
            ->where('item_category', 'BENDING')
            ->whereNull('deleted_at')
            ->get(['id', 'code', 'options']);

        $this->info("BENDING 아이템: {$items->count()}건");

        // legacy_bending_num → chandj imgdata 매핑
        $chandjImages = DB::connection('chandj')->table('bending')
            ->whereNull('is_deleted')
            ->whereNotNull('imgdata')
            ->where('imgdata', '!=', '')
            ->pluck('imgdata', 'num');

        $this->info("chandj 이미지: {$chandjImages->count()}건");
        $this->newLine();

        foreach ($items as $item) {
            $opts = json_decode($item->options ?? '{}', true) ?: [];
            $legacyNum = $opts['legacy_bending_num'] ?? null;

            if (! $legacyNum || ! isset($chandjImages[$legacyNum])) {
                continue;
            }

            // 이미 파일이 연결되어 있으면 스킵
            $existingFile = File::where('tenant_id', $tenantId)
                ->where('document_type', '1')
                ->where('document_id', $item->id)
                ->where('field_key', 'bending_diagram')
                ->whereNull('deleted_at')
                ->first();

            if ($existingFile) {
                $this->skipped++;

                continue;
            }

            $imgFilename = $chandjImages[$legacyNum];
            $imageUrl = "{$sourceBase}/{$imgFilename}";

            if ($dryRun) {
                $this->line("  ✅ {$item->code} ← {$imgFilename}");
                $this->uploaded++;

                continue;
            }

            // 이미지 다운로드
            try {
                $response = Http::withoutVerifying()->timeout(15)->get($imageUrl);

                if (! $response->successful()) {
                    $this->warn("  ❌ {$item->code}: HTTP {$response->status()} ({$imageUrl})");
                    $this->failed++;

                    continue;
                }

                $imageContent = $response->body();
                $mimeType = $response->header('Content-Type', 'image/png');
                $extension = $this->getExtension($imgFilename, $mimeType);

                // R2 저장
                $storedName = bin2hex(random_bytes(8)).'.'.$extension;
                $year = date('Y');
                $month = date('m');
                $directory = sprintf('%d/items/%s/%s', $tenantId, $year, $month);
                $filePath = $directory.'/'.$storedName;

                Storage::disk('r2')->put($filePath, $imageContent);

                // files 테이블 저장
                $file = File::create([
                    'tenant_id' => $tenantId,
                    'display_name' => $imgFilename,
                    'stored_name' => $storedName,
                    'file_path' => $filePath,
                    'file_size' => strlen($imageContent),
                    'mime_type' => $mimeType,
                    'file_type' => 'image',
                    'field_key' => 'bending_diagram',
                    'document_id' => $item->id,
                    'document_type' => '1',
                    'is_temp' => false,
                    'uploaded_by' => 1,
                    'created_by' => 1,
                ]);

                $this->line("  ✅ {$item->code} ← {$imgFilename} → file_id={$file->id}");
                $this->uploaded++;
            } catch (\Exception $e) {
                $this->error("  ❌ {$item->code}: {$e->getMessage()}");
                $this->failed++;
            }
        }

        $this->newLine();
        $this->info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━");
        $this->info("업로드: {$this->uploaded}건 | 스킵(이미 있음): {$this->skipped}건 | 실패: {$this->failed}건");

        if ($dryRun) {
            $this->info('🔍 DRY-RUN 완료.');
        }

        return self::SUCCESS;
    }

    private function getExtension(string $filename, string $mimeType): string
    {
        $ext = pathinfo($filename, PATHINFO_EXTENSION);
        if ($ext) {
            return strtolower($ext);
        }

        return match ($mimeType) {
            'image/jpeg' => 'jpg',
            'image/png' => 'png',
            'image/gif' => 'gif',
            'image/webp' => 'webp',
            default => 'png',
        };
    }
}