<?php

namespace App\Services\Equipment;

use App\Models\Commons\File;
use App\Models\Equipment\Equipment;
use App\Services\Service;
use Illuminate\Http\UploadedFile;
use Illuminate\Support\Facades\Storage;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

class EquipmentPhotoService extends Service
{
    private const MAX_PHOTOS = 10;

    public function index(int $equipmentId): array
    {
        $equipment = $this->getEquipment($equipmentId);

        return $equipment->photos->map(fn ($file) => $this->formatFileResponse($file))->values()->toArray();
    }

    /**
     * @param  UploadedFile[]  $files
     */
    public function store(int $equipmentId, array $files): array
    {
        $equipment = $this->getEquipment($equipmentId);
        $tenantId = $this->tenantId();
        $userId = $this->apiUserId();

        $currentCount = File::where('document_id', $equipmentId)
            ->where('document_type', 'equipment')
            ->whereNull('deleted_at')
            ->count();

        if ($currentCount + count($files) > self::MAX_PHOTOS) {
            throw new \Exception(__('error.equipment.photo_limit_exceeded'));
        }

        $uploaded = [];

        foreach ($files as $uploadedFile) {
            $extension = $uploadedFile->getClientOriginalExtension();
            $storedName = bin2hex(random_bytes(8)).'.'.$extension;
            $displayName = $uploadedFile->getClientOriginalName();

            $year = date('Y');
            $month = date('m');
            $directory = sprintf('%d/equipment/%s/%s', $tenantId, $year, $month);
            $filePath = $directory.'/'.$storedName;

            Storage::disk('r2')->putFileAs($directory, $uploadedFile, $storedName);

            $mimeType = $uploadedFile->getMimeType();

            $file = File::create([
                'tenant_id' => $tenantId,
                'display_name' => $displayName,
                'stored_name' => $storedName,
                'file_path' => $filePath,
                'file_size' => $uploadedFile->getSize(),
                'mime_type' => $mimeType,
                'file_type' => 'image',
                'document_id' => $equipmentId,
                'document_type' => 'equipment',
                'is_temp' => false,
                'uploaded_by' => $userId,
                'created_by' => $userId,
            ]);

            $uploaded[] = $this->formatFileResponse($file);
        }

        return $uploaded;
    }

    public function destroy(int $equipmentId, int $fileId): array
    {
        $tenantId = $this->tenantId();
        $userId = $this->apiUserId();

        $file = File::where('tenant_id', $tenantId)
            ->where('document_id', $equipmentId)
            ->where('document_type', 'equipment')
            ->where('id', $fileId)
            ->first();

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

        $file->softDeleteFile($userId);

        return [
            'file_id' => $fileId,
            'deleted' => true,
        ];
    }

    private function getEquipment(int $equipmentId): Equipment
    {
        $equipment = Equipment::find($equipmentId);

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

        return $equipment;
    }

    private function formatFileResponse(File $file): array
    {
        return [
            'id' => $file->id,
            'file_name' => $file->display_name,
            'file_path' => $file->file_path,
            'file_url' => url("/api/v1/files/{$file->id}/download"),
            'file_size' => $file->file_size,
            'mime_type' => $file->mime_type,
            'created_at' => $file->created_at?->format('Y-m-d H:i:s'),
        ];
    }
}