<?php

namespace App\Http\Controllers\Api\V1;

use App\Helpers\ApiResponse;
use App\Http\Controllers\Controller;
use App\Models\Tenants\Receiving;
use App\Services\BendingCodeService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class BendingController extends Controller
{
    public function __construct(
        private readonly BendingCodeService $service
    ) {}

    /**
     * 절곡품 코드맵 조회 (캐스케이딩 드롭다운용)
     */
    public function codeMap(): JsonResponse
    {
        return ApiResponse::handle(function () {
            return $this->service->getCodeMap();
        }, __('message.fetched'));
    }

    /**
     * 드롭다운 선택 → 품목 매핑 조회
     */
    public function resolveItem(Request $request): JsonResponse
    {
        return ApiResponse::handle(function () use ($request) {
            $prodCode = $request->query('prod');
            $specCode = $request->query('spec');
            $lengthCode = $request->query('length');

            if (! $prodCode || ! $specCode || ! $lengthCode) {
                return ['error' => 'MISSING_PARAMS', 'code' => 400, 'message' => 'prod, spec, length 파라미터가 필요합니다.'];
            }

            $expectedCode = "BD-{$prodCode}{$specCode}-{$lengthCode}";
            $item = $this->service->resolveItem($prodCode, $specCode, $lengthCode);

            if (! $item) {
                return [
                    'error' => 'NOT_MAPPED',
                    'code' => 404,
                    'message' => '해당 조합에 매핑된 품목이 없습니다.',
                    'expected_code' => $expectedCode,
                ];
            }

            $item['expected_code'] = $expectedCode;

            return $item;
        }, __('message.fetched'));
    }

    /**
     * 원자재 LOT 목록 조회 (입고 + 수입검사 완료 기준)
     *
     * 재질(material) 키워드를 분해하여 유연 검색
     * 예: "EGI 1.55T" → "EGI" AND "1.55" 로 검색 (공백/T 무관)
     */
    public function materialLots(Request $request): JsonResponse
    {
        return ApiResponse::handle(function () use ($request) {
            $material = $request->query('material');

            $query = Receiving::whereIn('status', ['completed', 'inspection_completed'])
                ->whereNotNull('lot_no')
                ->where('lot_no', '!=', '');

            // 재질 키워드 분해 검색 (공백/T 접미사 무관)
            if ($material) {
                // "EGI 1.55T" → ["EGI", "1.55"], "SUS 1.2T" → ["SUS", "1.2"]
                $keywords = preg_split('/[\s]+/', preg_replace('/T$/i', '', trim($material)));
                $keywords = array_filter($keywords);

                $query->where(function ($q) use ($keywords) {
                    foreach ($keywords as $kw) {
                        $q->where(function ($sub) use ($kw) {
                            $sub->where('item_name', 'LIKE', "%{$kw}%")
                                ->orWhere('specification', 'LIKE', "%{$kw}%");
                        });
                    }
                });
            }

            return $query->select([
                'id',
                'lot_no',
                'supplier_lot',
                'item_name',
                'specification',
                'receiving_qty',
                'receiving_date',
                'supplier',
                'options',
            ])
                ->orderByDesc('receiving_date')
                ->limit(50)
                ->get();
        }, __('message.fetched'));
    }

    /**
     * LOT 번호 생성 (일련번호 없음 — 같은 날 같은 조합은 동일 LOT)
     */
    public function generateLotNumber(Request $request): JsonResponse
    {
        return ApiResponse::handle(function () use ($request) {
            $prodCode = $request->input('prod_code');
            $specCode = $request->input('spec_code');
            $lengthCode = $request->input('length_code');
            $regDate = $request->input('reg_date', now()->toDateString());

            if (! $prodCode || ! $specCode || ! $lengthCode) {
                return ['error' => 'MISSING_PARAMS', 'code' => 400, 'message' => 'prod_code, spec_code, length_code가 필요합니다.'];
            }

            $lotNumber = $this->service->generateLotNumber($prodCode, $specCode, $lengthCode, $regDate);
            $material = BendingCodeService::getMaterial($prodCode, $specCode);

            return [
                'lot_number' => $lotNumber,
                'material' => $material,
            ];
        }, __('message.fetched'));
    }
}