<?php

namespace App\Console\Commands;

use App\Models\BendingItem;
use App\Models\BendingDataRow;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\DB;

/**
 * chandj.bending 누락분 → bending_items + bending_data 직접 이관
 *
 * 실행: php artisan bending:import-missing [--dry-run] [--tenant_id=287]
 */
class BendingImportMissing extends Command
{
    protected $signature = 'bending:import-missing
        {--tenant_id=287 : 테넌트 ID}
        {--dry-run : 실행하지 않고 미리보기만}';

    protected $description = 'chandj.bending 누락분 → bending_items 직접 이관';

    private int $tenantId;

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

        $existingNums = BendingItem::where('tenant_id', $this->tenantId)
            ->whereNotNull('legacy_bending_id')
            ->pluck('legacy_bending_id')
            ->toArray();

        $missing = DB::connection('chandj')->table('bending')
            ->where(function ($q) {
                $q->whereNull('is_deleted')->orWhere('is_deleted', 0);
            })
            ->whereNotIn('num', $existingNums)
            ->orderBy('num')
            ->get();

        $this->info("누락분: {$missing->count()}건 (이미 매핑: " . count($existingNums) . "건)");

        if ($dryRun) {
            $this->preview($missing);
            return 0;
        }

        $success = 0;
        $bdCount = 0;
        $errors = 0;

        DB::transaction(function () use ($missing, &$success, &$bdCount, &$errors) {
            foreach ($missing as $row) {
                try {
                    $bi = $this->importItem($row);
                    $bd = $this->importBendingData($bi, $row);
                    $bdCount += $bd;
                    $success++;
                } catch (\Throwable $e) {
                    $this->error("  ❌ #{$row->num} {$row->itemName}: {$e->getMessage()}");
                    $errors++;
                }
            }
        });

        $this->newLine();
        $this->info("완료: {$success}건 이관, {$bdCount}건 전개도, {$errors}건 오류");

        return $errors > 0 ? 1 : 0;
    }

    private function importItem(object $row): BendingItem
    {
        $code = $this->generateCode($row);

        $bi = BendingItem::create([
            'tenant_id' => $this->tenantId,
            'code' => $code,
            'legacy_code' => "CHANDJ-{$row->num}",
            'legacy_bending_id' => $row->num,
            'item_name' => $row->itemName ?: "부품#{$row->num}",
            'item_sep' => $this->clean($row->item_sep),
            'item_bending' => $this->clean($row->item_bending),
            'material' => $this->clean($row->material),
            'item_spec' => $this->clean($row->item_spec),
            'model_name' => $this->clean($row->model_name ?? null),
            'model_UA' => $this->clean($row->model_UA ?? null),
            'rail_width' => $this->toNum($row->rail_width ?? null),
            'exit_direction' => $this->clean($row->exit_direction ?? null),
            'box_width' => $this->toNum($row->box_width ?? null),
            'box_height' => $this->toNum($row->box_height ?? null),
            'front_bottom' => $this->toNum($row->front_bottom_width ?? null),
            'options' => $this->buildOptions($row),
            'is_active' => true,
            'created_by' => 1,
        ]);

        $this->line("  ✅ #{$row->num} → {$bi->id} ({$row->itemName}) [{$code}]");

        return $bi;
    }

    private function importBendingData(BendingItem $bi, object $row): int
    {
        $inputs = json_decode($row->inputList ?? '[]', true) ?: [];
        if (empty($inputs)) {
            return 0;
        }

        $rates = json_decode($row->bendingrateList ?? '[]', true) ?: [];
        $sums = json_decode($row->sumList ?? '[]', true) ?: [];
        $colors = json_decode($row->colorList ?? '[]', true) ?: [];
        $angles = json_decode($row->AList ?? '[]', true) ?: [];

        $count = count($inputs);
        for ($i = 0; $i < $count; $i++) {
            $input = (float) ($inputs[$i] ?? 0);
            $rate = (string) ($rates[$i] ?? '');
            $afterRate = ($rate !== '') ? $input + (float) $rate : $input;

            BendingDataRow::create([
                'bending_item_id' => $bi->id,
                'sort_order' => $i + 1,
                'input' => $input,
                'rate' => $rate !== '' ? $rate : null,
                'after_rate' => $afterRate,
                'sum' => (float) ($sums[$i] ?? 0),
                'color' => (bool) ($colors[$i] ?? false),
                'a_angle' => (bool) ($angles[$i] ?? false),
            ]);
        }

        return $count;
    }

    private function generateCode(object $row): string
    {
        $bending = $row->item_bending ?? '';
        $sep = $row->item_sep ?? '';
        $material = $row->material ?? '';
        $name = $row->itemName ?? '';

        $prodCode = match (true) {
            $bending === '케이스' => 'C',
            $bending === '하단마감재' && str_contains($sep, '철재') => 'T',
            $bending === '하단마감재' => 'B',
            $bending === '가이드레일' && str_contains($sep, '철재') => 'R',
            $bending === '가이드레일' => 'R',
            $bending === '마구리' => 'X',
            $bending === 'L-BAR' => 'L',
            $bending === '연기차단재' => 'G',
            default => 'Z',
        };

        $specCode = match (true) {
            str_contains($name, '전면') => 'F',
            str_contains($name, '린텔') => 'L',
            str_contains($name, '점검') => 'P',
            str_contains($name, '후면') => 'B',
            str_contains($name, '상부') || str_contains($name, '덮개') => 'X',
            str_contains($name, '본체') => 'M',
            str_contains($name, 'C형') || str_contains($name, '-C') => 'C',
            str_contains($name, 'D형') || str_contains($name, '-D') => 'D',
            str_contains($name, '마감') && str_contains($material, 'SUS') => 'S',
            str_contains($material, 'SUS') => 'S',
            str_contains($material, 'EGI') => 'E',
            default => 'Z',
        };

        $date = $row->registration_date ?? now()->format('Y-m-d');
        $dateCode = date('ymd', strtotime($date));

        $base = "{$prodCode}{$specCode}{$dateCode}";

        // 중복 방지 일련번호
        $seq = 1;
        while (BendingItem::where('tenant_id', $this->tenantId)
            ->where('code', $seq === 1 ? $base : "{$base}-" . str_pad($seq, 2, '0', STR_PAD_LEFT))
            ->whereNull('length_code')
            ->exists()) {
            $seq++;
        }

        return $seq === 1 ? $base : "{$base}-" . str_pad($seq, 2, '0', STR_PAD_LEFT);
    }

    private function buildOptions(object $row): ?array
    {
        $opts = [];
        if (! empty($row->memo)) $opts['memo'] = $row->memo;
        if (! empty($row->author)) $opts['author'] = $row->author;
        if (! empty($row->search_keyword)) $opts['search_keyword'] = $row->search_keyword;
        if (! empty($row->registration_date)) $opts['registration_date'] = (string) $row->registration_date;

        return empty($opts) ? null : $opts;
    }

    private function preview($missing): void
    {
        $grouped = $missing->groupBy(fn ($r) => ($r->item_bending ?: '미분류') . '/' . ($r->item_sep ?: '미분류'));
        $this->table(['분류', '건수'], $grouped->map(fn ($g, $k) => [$k, $g->count()])->values());

        $this->newLine();
        $headers = ['num', 'itemName', 'item_sep', 'item_bending', 'material', 'has_bd'];
        $rows = $missing->take(15)->map(fn ($r) => [
            $r->num,
            mb_substr($r->itemName ?? '', 0, 25),
            $r->item_sep ?? '-',
            $r->item_bending ?? '-',
            mb_substr($r->material ?? '-', 0, 12),
            ! empty(json_decode($r->inputList ?? '[]', true)) ? '✅' : '❌',
        ]);
        $this->table($headers, $rows);
    }

    private function clean(?string $v): ?string
    {
        return ($v === null || $v === '' || $v === 'null') ? null : trim($v);
    }

    private function toNum(mixed $v): ?float
    {
        return ($v === null || $v === '' || $v === 'null') ? null : (float) $v;
    }
}