<?php

namespace App\Services\ItemMaster;

use App\Models\ItemMaster\ItemPage;
use App\Services\Service;
use Illuminate\Support\Collection;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

class ItemPageService extends Service
{
    /**
     * 페이지 목록 조회 (섹션/필드 중첩)
     */
    public function index(?string $itemType = null): Collection
    {
        $tenantId = $this->tenantId();

        $query = ItemPage::with([
            'sections' => function ($query) {
                $query->orderBy('order_no');
            },
            'sections.fields' => function ($query) {
                $query->orderBy('order_no');
            },
            'sections.bomItems',
        ])
            ->where('tenant_id', $tenantId)
            ->where('is_active', 1);

        if ($itemType) {
            $query->where('item_type', strtoupper($itemType));
        }

        return $query->get();
    }

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

        $page = ItemPage::create([
            'tenant_id' => $tenantId,
            'page_name' => $data['page_name'],
            'item_type' => $data['item_type'],
            'absolute_path' => $data['absolute_path'] ?? null,
            'is_active' => true,
            'created_by' => $userId,
        ]);

        // 관계 로드
        $page->load(['sections']);

        return $page;
    }

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

        $page = ItemPage::where('tenant_id', $tenantId)
            ->where('id', $id)
            ->first();

        if (! $page) {
            throw new NotFoundHttpException(__('error.not_found'));
        }

        $page->update([
            'page_name' => $data['page_name'] ?? $page->page_name,
            'absolute_path' => $data['absolute_path'] ?? $page->absolute_path,
            'updated_by' => $userId,
        ]);

        $page->load(['sections.fields', 'sections.bomItems']);

        return $page;
    }

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

        $page = ItemPage::where('tenant_id', $tenantId)
            ->where('id', $id)
            ->first();

        if (! $page) {
            throw new NotFoundHttpException(__('error.not_found'));
        }

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

        // Cascade: 하위 섹션/필드도 Soft Delete
        foreach ($page->sections as $section) {
            $section->update(['deleted_by' => $userId]);
            $section->delete();

            foreach ($section->fields as $field) {
                $field->update(['deleted_by' => $userId]);
                $field->delete();
            }

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