<?php

namespace App\Services\ItemMaster;

use App\Models\ItemMaster\ItemSection;
use App\Services\Service;
use Illuminate\Database\Eloquent\Collection;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

/**
 * SectionTemplateService
 *
 * 섹션 템플릿 관리 서비스
 * 내부적으로 ItemSection (is_template=true) 사용
 */
class SectionTemplateService extends Service
{
    /**
     * 섹션 템플릿 목록
     */
    public function index(): Collection
    {
        $tenantId = $this->tenantId();

        return ItemSection::templates()
            ->where('tenant_id', $tenantId)
            ->with(['fields', 'bomItems'])
            ->orderBy('created_at', 'desc')
            ->get();
    }

    /**
     * 섹션 템플릿 생성
     */
    public function store(array $data): ItemSection
    {
        $tenantId = $this->tenantId();
        $userId = $this->apiUserId();

        $template = ItemSection::create([
            'tenant_id' => $tenantId,
            'group_id' => 1,
            'page_id' => null,
            'title' => $data['title'],
            'type' => $data['type'],
            'order_no' => 0,
            'is_template' => true,
            'is_default' => $data['is_default'] ?? false,
            'description' => $data['description'] ?? null,
            'created_by' => $userId,
        ]);

        return $template->load(['fields', 'bomItems']);
    }

    /**
     * 섹션 템플릿 수정
     */
    public function update(int $id, array $data): ItemSection
    {
        $tenantId = $this->tenantId();
        $userId = $this->apiUserId();

        $template = ItemSection::templates()
            ->where('tenant_id', $tenantId)
            ->where('id', $id)
            ->first();

        if (! $template) {
            throw new NotFoundHttpException(__('error.section_not_found'));
        }

        $template->update([
            'title' => $data['title'] ?? $template->title,
            'type' => $data['type'] ?? $template->type,
            'description' => $data['description'] ?? $template->description,
            'is_default' => $data['is_default'] ?? $template->is_default,
            'updated_by' => $userId,
        ]);

        return $template->fresh()->load(['fields', 'bomItems']);
    }

    /**
     * 섹션 템플릿 삭제
     */
    public function destroy(int $id): void
    {
        $tenantId = $this->tenantId();
        $userId = $this->apiUserId();

        $template = ItemSection::templates()
            ->where('tenant_id', $tenantId)
            ->where('id', $id)
            ->first();

        if (! $template) {
            throw new NotFoundHttpException(__('error.section_not_found'));
        }

        $template->update(['deleted_by' => $userId]);
        $template->delete();

        // 하위 필드/BOM도 Soft Delete
        foreach ($template->fields as $field) {
            $field->update(['deleted_by' => $userId]);
            $field->delete();
        }

        foreach ($template->bomItems as $bomItem) {
            $bomItem->update(['deleted_by' => $userId]);
            $bomItem->delete();
        }
    }
}