<?php

namespace Modules\Maintenance\Http\Controllers\Api\V1;

use App\Http\Controllers\Controller;
use Modules\Maintenance\Models\AssetDocument;
use Modules\Maintenance\Models\Equipment;
use Modules\Maintenance\Models\EquipmentPart;
use Modules\Maintenance\Models\PartCatalog;
use Modules\Maintenance\Traits\ResolvesBusiness;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Storage;

class AssetDocumentController extends Controller
{
    use ResolvesBusiness;

    private const TYPE_MAP = [
        'equipment' => Equipment::class,
        'equipment_part' => EquipmentPart::class,
        'part_catalog' => PartCatalog::class,
    ];

    public function index(Request $request)
    {
        $business = $this->resolveBusiness($request);
        if (! $business) {
            return $this->jsonError('کسب‌وکار یافت نشد.', 404);
        }

        $request->validate([
            'documentable_type' => ['required', 'string', 'in:equipment,equipment_part,part_catalog'],
            'documentable_id' => ['required', 'integer'],
        ]);

        $model = $this->resolveDocumentable($request->get('documentable_type'), (int) $request->get('documentable_id'));
        if (! $model || $model->business_id !== $business->id) {
            return $this->jsonError('مورد یافت نشد.', 404);
        }

        $docs = AssetDocument::where('business_id', $business->id)
            ->where('documentable_type', $model->getMorphClass())
            ->where('documentable_id', $model->id)
            ->orderBy('sort_order')
            ->get();

        return $this->jsonSuccess(['items' => $docs]);
    }

    public function store(Request $request)
    {
        $business = $this->resolveBusiness($request);
        if (! $business) {
            return $this->jsonError('کسب‌وکار یافت نشد.', 404);
        }

        $data = $request->validate([
            'documentable_type' => ['required', 'string', 'in:equipment,equipment_part,part_catalog'],
            'documentable_id' => ['required', 'integer'],
            'doc_type' => ['required', 'string', 'max:50'],
            'title' => ['required', 'string', 'max:255'],
            'file' => ['nullable', 'file', 'max:51200'],
            'file_url' => ['nullable', 'url', 'max:500'],
            'language' => ['nullable', 'string', 'max:10'],
            'version' => ['nullable', 'string', 'max:50'],
            'effective_date' => ['nullable', 'date'],
            'notes' => ['nullable', 'string'],
            'sort_order' => ['nullable', 'integer', 'min:0'],
        ]);

        $model = $this->resolveDocumentable($data['documentable_type'], (int) $data['documentable_id']);
        if (! $model || $model->business_id !== $business->id) {
            return $this->jsonError('مورد یافت نشد.', 404);
        }

        $filePath = null;
        $mimeType = null;
        if ($request->hasFile('file')) {
            $file = $request->file('file');
            $filePath = $file->store("maintenance/docs/{$business->id}", 'public');
            $mimeType = $file->getMimeType();
        }

        $doc = AssetDocument::create([
            'business_id' => $business->id,
            'documentable_type' => $model->getMorphClass(),
            'documentable_id' => $model->id,
            'doc_type' => $data['doc_type'],
            'title' => $data['title'],
            'file_path' => $filePath,
            'file_url' => $data['file_url'] ?? null,
            'mime_type' => $mimeType,
            'language' => $data['language'] ?? 'fa',
            'version' => $data['version'] ?? null,
            'effective_date' => $data['effective_date'] ?? null,
            'uploaded_by' => $request->user()?->id,
            'notes' => $data['notes'] ?? null,
            'sort_order' => $data['sort_order'] ?? 0,
        ]);

        return $this->jsonSuccess($doc, 'سند ثبت شد.', 201);
    }

    public function destroy(Request $request, AssetDocument $assetDocument)
    {
        if (! $this->ensureBusinessOwnership($request, $assetDocument->business_id)) {
            return $this->jsonError('دسترسی ندارید.', 403);
        }

        if ($assetDocument->file_path) {
            Storage::disk('public')->delete($assetDocument->file_path);
        }
        $assetDocument->delete();

        return $this->jsonSuccess(null, 'سند حذف شد.');
    }

    private function resolveDocumentable(string $type, int $id): ?object
    {
        $class = self::TYPE_MAP[$type] ?? null;
        if (! $class) {
            return null;
        }

        return $class::find($id);
    }
}