<?php

namespace App\Console\Commands;

use Illuminate\Console\Attributes\AsCommand;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;

/**
 * 3단계: chandj.bending → SAM items.options 전개도(bendingData) + 속성 임포트
 *
 * chandj bending 265건 → SAM items (item_category=BENDING) 170건
 *
 * 매핑 방식:
 *   A) 한글 패턴 (58건): code 파싱으로 item_spec/material 매칭
 *   B) PREFIX-LEN (112건): PREFIX → 부품 유형 → chandj item_bending+itemName+material 매칭
 *
 * 실행: php artisan bending:import-legacy [--dry-run] [--tenant_id=287]
 */
#[AsCommand(name: 'bending:import-legacy', description: 'chandj 레거시 전개도(bendingData) + 속성 → SAM items.options 임포트')]
class BendingImportLegacy extends Command
{
    protected $signature = 'bending:import-legacy
                            {--tenant_id=287 : Target tenant ID}
                            {--dry-run : 실제 저장 없이 미리보기}
                            {--force : 기존 bendingData 덮어쓰기}';

    // PREFIX → chandj 매칭 조건 (item_bending + itemName 패턴 + material)
    private const PREFIX_TO_CHANDJ = [
        // 가이드레일 (벽면) — item_spec=120*70 (KSS01/02 기준)
        'RS' => ['item_bending' => '가이드레일', 'itemName_like' => '%마감%', 'material' => 'SUS 1.2T', 'item_spec' => '120*70'],
        'RE' => ['item_bending' => '가이드레일', 'itemName_like' => '%마감%', 'material' => 'EGI 1.55T', 'item_spec' => '120*70'],
        'RM' => ['item_bending' => '가이드레일', 'itemName_like' => '%본체%', 'material' => 'EGI 1.55T', 'item_spec' => '120*70'],
        'RC' => ['item_bending' => '가이드레일', 'itemName_like' => '%C형%', 'material' => 'EGI 1.55T', 'item_spec' => '120*70'],
        'RD' => ['item_bending' => '가이드레일', 'itemName_like' => '%벽면형-D%', 'material' => 'EGI 1.55T', 'item_spec' => '120*70'],
        'RT' => ['item_bending' => '가이드레일', 'itemName_like' => '%본체%', 'material' => 'EGI 1.55T', 'item_spec' => '130*75'],
        // 가이드레일 (측면) — 벽면과 같은 전개도
        'SS' => ['same_as' => 'RS'],
        'SU' => ['same_as' => 'RS'],
        'SM' => ['same_as' => 'RM'],
        'SC' => ['same_as' => 'RC'],
        'SD' => ['item_bending' => '가이드레일', 'itemName_like' => '%측면형-D%', 'material' => 'EGI 1.55T', 'item_spec' => '120*120'],
        'ST' => ['same_as' => 'RT'],
        'SE' => ['same_as' => 'RE'],
        // 하단마감재
        'BS' => ['item_bending' => '하단마감재', 'itemName_like' => '%하장바%', 'material_like' => '%SUS%', 'item_sep' => '스크린'],
        'BE' => ['item_bending' => '하단마감재', 'itemName_like' => '%하장바%', 'material_like' => '%EGI%', 'item_sep' => '스크린'],
        'TS' => ['item_bending' => '하단마감재', 'itemName_like' => '%하장바%', 'material_like' => '%SUS%', 'item_sep' => '철재'],
        'LA' => ['item_bending' => 'L-BAR', 'itemName_like' => '%L-BAR%', 'material' => 'EGI 1.55T'],
        'HH' => ['item_bending' => '하단마감재', 'itemName_like' => '%보강평철%', 'material_like' => '%EGI%'],
        // 케이스 — spec 없이 itemName으로 구분
        'CF' => ['item_bending' => '케이스', 'itemName_like' => '%전면%', 'item_sep' => '스크린'],
        'CL' => ['item_bending' => '케이스', 'itemName_like' => '%린텔%', 'item_sep' => '스크린'],
        'CP' => ['item_bending' => '케이스', 'itemName_like' => '%점검%', 'item_sep' => '스크린'],
        'CB' => ['item_bending' => '케이스', 'itemName_like' => '%후면%', 'item_sep' => '스크린'],
        // 연기차단재
        'GI' => ['item_bending' => '연기차단재', 'itemName_like' => '%연기%'],
        // 공용
        'XX' => null, // 여러 부품이 섞여 있어 자동 매핑 불가
        'YY' => null, // 별도 마감 — 자동 매핑 불가
    ];

    private array $stats = [
        'total_sam' => 0,
        'matched' => 0,
        'updated' => 0,
        'already_has' => 0,
        'no_match' => 0,
        'no_bending_data' => 0,
    ];

    private array $unmatchedItems = [];

    public function handle(): int
    {
        $tenantId = (int) $this->option('tenant_id');
        $dryRun = $this->option('dry-run');
        $force = $this->option('force');

        $this->info('=== 3단계: chandj 전개도 → SAM options 임포트 ===');
        $this->info('Tenant: '.$tenantId.' | Mode: '.($dryRun ? 'DRY-RUN' : 'LIVE').($force ? ' (FORCE)' : ''));
        $this->newLine();

        // 1. chandj bending 전체 로드
        $chandjRows = DB::connection('chandj')->table('bending')
            ->whereNull('is_deleted')
            ->get();
        $this->info("chandj bending 활성: {$chandjRows->count()}건");

        // 2. SAM BENDING items 전체 로드
        $samItems = DB::table('items')
            ->where('tenant_id', $tenantId)
            ->where('item_category', 'BENDING')
            ->whereNull('deleted_at')
            ->orderBy('code')
            ->get(['id', 'code', 'name', 'options']);

        $this->stats['total_sam'] = $samItems->count();
        $this->info("SAM BENDING items: {$samItems->count()}건");
        $this->newLine();

        // 3. 매칭 + 임포트
        foreach ($samItems as $item) {
            $options = json_decode($item->options ?? '{}', true) ?: [];

            // 이미 bendingData가 있으면 skip (--force 아닌 경우)
            if (! empty($options['bendingData']) && ! $force) {
                $this->stats['already_has']++;

                continue;
            }

            // chandj 매칭
            $chandjRow = $this->findChandjMatch($item->code, $options, $chandjRows);

            if (! $chandjRow) {
                $this->stats['no_match']++;
                $this->unmatchedItems[] = $item->code;

                continue;
            }

            // bendingData 변환
            $bendingData = $this->convertBendingData($chandjRow);

            if (empty($bendingData)) {
                $this->stats['no_bending_data']++;

                continue;
            }

            // options 업데이트
            $updates = ['bendingData' => $bendingData];

            // 추가 속성 (비어있으면 채우기)
            $optionalFields = [
                'memo' => $chandjRow->memo,
                'author' => $chandjRow->author,
                'search_keyword' => $chandjRow->search_keyword,
                'registration_date' => $chandjRow->registration_date,
                'model_UA' => $chandjRow->model_UA,
                'exit_direction' => $chandjRow->exit_direction,
                'front_bottom_width' => $chandjRow->front_bottom_width,
                'rail_width' => $chandjRow->rail_width,
                'box_width' => $chandjRow->box_width,
                'box_height' => $chandjRow->box_height,
                'item_spec' => $chandjRow->item_spec,
                'legacy_bending_num' => $chandjRow->num,
            ];

            foreach ($optionalFields as $key => $value) {
                if (! empty($value) && empty($options[$key])) {
                    $updates[$key] = $value;
                }
            }

            $merged = array_merge($options, $updates);

            if (! $dryRun) {
                DB::table('items')->where('id', $item->id)->update([
                    'options' => json_encode($merged, JSON_UNESCAPED_UNICODE),
                    'updated_at' => now(),
                ]);
            }

            $this->stats['matched']++;
            $this->stats['updated']++;
            $colCount = count($bendingData);
            $this->line("  ✅ {$item->code} ← chandj#{$chandjRow->num} (전개도 {$colCount}열, +".implode(',', array_keys($updates)).')');
        }

        $this->showStats($dryRun);

        return self::SUCCESS;
    }

    /**
     * SAM item code → chandj bending 매칭
     */
    private function findChandjMatch(string $code, array $options, $chandjRows): ?object
    {
        // A) 한글 패턴 — code에서 속성 추출하여 매칭
        if (! preg_match('/^BD-[A-Z]{2}-\d{2}$/', $code)) {
            return $this->matchKoreanPattern($code, $chandjRows);
        }

        // B) PREFIX-LEN — PREFIX로 chandj 조건 결정
        preg_match('/^BD-([A-Z]{2})-\d{2}$/', $code, $m);
        $prefix = $m[1];

        $mapping = self::PREFIX_TO_CHANDJ[$prefix] ?? null;
        if (! $mapping) {
            return null;
        }

        // same_as 참조
        if (isset($mapping['same_as'])) {
            $mapping = self::PREFIX_TO_CHANDJ[$mapping['same_as']] ?? null;
            if (! $mapping) {
                return null;
            }
        }

        return $this->queryChangj($chandjRows, $mapping);
    }

    /**
     * 한글 패턴 매칭
     */
    private function matchKoreanPattern(string $code, $chandjRows): ?object
    {
        // BD-가이드레일-KSS01-SUS-120*70
        if (preg_match('/^BD-가이드레일-(\w+)-(\w+)-(.+)$/', $code, $m)) {
            $material = str_contains($m[2], 'SUS') ? 'SUS 1.2T' : 'EGI 1.55T';

            return $this->queryChangj($chandjRows, [
                'item_bending' => '가이드레일',
                'material' => $material,
                'item_spec' => $m[3],
            ]);
        }

        // BD-하단마감재-KSS01-SUS-60*40
        if (preg_match('/^BD-하단마감재-(\w+)-(\w+)-(.+)$/', $code, $m)) {
            $material = str_contains($m[2], 'SUS') ? 'SUS' : 'EGI';

            return $this->queryChangj($chandjRows, [
                'item_bending' => '하단마감재',
                'material_like' => "%{$material}%",
                'item_spec_like' => "%{$m[3]}%",
            ]);
        }

        // BD-케이스-650*550 → chandj에서 itemName에 "650*550" 포함된 전면판 매칭
        if (preg_match('/^BD-케이스-(\d+)\*(\d+)$/', $code, $m)) {
            $spec = $m[1].'*'.$m[2];

            return $chandjRows->first(function ($r) use ($spec) {
                return (str_contains($r->itemName, $spec) || $r->item_spec === $spec)
                    && str_contains($r->itemName, '전면');
            });
        }

        // BD-마구리-655*505
        if (preg_match('/^BD-마구리-(.+)$/', $code, $m)) {
            return $chandjRows->first(fn ($r) => $r->item_bending === '마구리' && $r->item_spec === $m[1]);
        }

        // BD-L-BAR-KSS01-17*60
        if (preg_match('/^BD-L-BAR-\w+-(.+)$/', $code, $m)) {
            return $chandjRows->first(fn ($r) => $r->item_bending === 'L-BAR' && $r->item_spec === $m[1]);
        }

        // BD-보강평철-50
        if (preg_match('/^BD-보강평철-(.+)$/', $code, $m)) {
            return $chandjRows->first(fn ($r) => str_contains($r->itemName, '보강평철') && $r->item_spec === $m[1]);
        }

        return null;
    }

    /**
     * chandj 컬렉션에서 조건으로 검색
     */
    private function queryChangj($rows, array $cond): ?object
    {
        return $rows->first(function ($r) use ($cond) {
            if (isset($cond['item_sep']) && $r->item_sep !== $cond['item_sep']) {
                return false;
            }
            if (isset($cond['item_bending']) && $r->item_bending !== $cond['item_bending']) {
                return false;
            }
            if (isset($cond['material']) && $r->material !== $cond['material']) {
                return false;
            }
            if (isset($cond['material_like']) && ! str_contains($r->material, str_replace('%', '', $cond['material_like']))) {
                return false;
            }
            if (isset($cond['itemName_like']) && ! str_contains($r->itemName, str_replace('%', '', $cond['itemName_like']))) {
                return false;
            }
            if (isset($cond['item_spec']) && $r->item_spec !== $cond['item_spec']) {
                return false;
            }
            if (isset($cond['item_spec_like']) && ! str_contains($r->item_spec ?? '', str_replace('%', '', $cond['item_spec_like']))) {
                return false;
            }

            return true;
        });
    }

    /**
     * chandj bending row → bendingData JSON 배열 변환
     *
     * 레거시: inputList=["10","11","110"], bendingrateList=["","-1",""], sumList=["10","21","131"], colorList=[false,false,true], AList=[false,false,false]
     * SAM: [{"no":1,"input":10,"rate":"","sum":10,"color":false,"aAngle":false}, ...]
     */
    private function convertBendingData(object $row): array
    {
        $inputs = json_decode($row->inputList ?? '[]', true) ?: [];
        $rates = json_decode($row->bendingrateList ?? '[]', true) ?: [];
        $sums = json_decode($row->sumList ?? '[]', true) ?: [];
        $colors = json_decode($row->colorList ?? '[]', true) ?: [];
        $angles = json_decode($row->AList ?? '[]', true) ?: [];

        if (empty($inputs)) {
            return [];
        }

        $data = [];
        $count = count($inputs);

        for ($i = 0; $i < $count; $i++) {
            $data[] = [
                'no' => $i + 1,
                'input' => (float) ($inputs[$i] ?? 0),
                'rate' => (string) ($rates[$i] ?? ''),
                'sum' => (float) ($sums[$i] ?? 0),
                'color' => (bool) ($colors[$i] ?? false),
                'aAngle' => (bool) ($angles[$i] ?? false),
            ];
        }

        return $data;
    }

    private function showStats(bool $dryRun): void
    {
        $this->newLine();
        $this->info('━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━');
        $this->info('📊 결과'.($dryRun ? ' (DRY-RUN)' : ''));
        $this->info('━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━');
        $this->info("  SAM BENDING 전체: {$this->stats['total_sam']}건");
        $this->info("  매칭 성공 (업데이트): {$this->stats['updated']}건");
        $this->info("  이미 bendingData 있음 (skip): {$this->stats['already_has']}건");
        $this->info("  매칭 실패: {$this->stats['no_match']}건");
        if ($this->stats['no_bending_data'] > 0) {
            $this->warn("  전개도 데이터 없음: {$this->stats['no_bending_data']}건");
        }
        $this->info('━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━');

        if (! empty($this->unmatchedItems)) {
            $this->newLine();
            $this->warn('⚠️ 매칭 실패 항목:');
            foreach ($this->unmatchedItems as $code) {
                $this->line("  - {$code}");
            }
        }

        if ($dryRun) {
            $this->newLine();
            $this->info('🔍 DRY-RUN 완료. --dry-run 제거하면 실제 반영됩니다.');
        }
    }
}