<?php

namespace App\Http\Controllers\API;

use App\Http\Controllers\Controller;
use App\Http\Requests\API\File\DownloadZipRequest;
use App\Http\Requests\API\File\FileUploadRequest;
use App\Http\Resources\API\FileByObjectResource;
use App\Http\Resources\API\FileDownloadResource;
use App\Http\Resources\API\FileUploadSuccessResource;
use App\Models\Enums\FileObjectType;
use App\Models\File;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Storage;

class FileController extends Controller
{

    public function download(string $id)
    {
        $file = File::query()->findOrFail($id);

        $fileObjectType = FileObjectType::from($file->object_type);
        $fileObjectType->modelBuilderAllowed($file->object_id)->findOrFail($file->object_id);

        return Storage::download(
            $file->pathname,
            sprintf("%s.%s", rtrim($file->title, "." . $file->extension), $file->extension)
        );
    }

    public function downloadZip(DownloadZipRequest $request)
    {
        $files = File::query()->whereIn("id", $request->get("ids"))->get();

        foreach ($files as $file) {
            $object = FileObjectType::from($file->object_type)
                ->modelBuilderAllowed($file->object_id)
                ->find($file->object_id);

            if (! $object) {
                return $this->badRequest(sprintf("File ID: %s, no permission to access", $file->id));
            }
        }

        return FileDownloadResource::collection($files);
    }

    /**
     * 文件上传
     *
     * @param FileUploadRequest $request
     * @return FileUploadSuccessResource|\Illuminate\Http\JsonResponse
     */
    public function upload(FileUploadRequest $request)
    {
        $fileObjectType = FileObjectType::from($request->object_type);

        $file = $request->file("file");
        if (! $file->isValid()) {
            return $this->badRequest("File upload failed.");
        }

        $pathname = $file->storeAs(
            sprintf("c%s/%s/%s", Auth::user()->company_id, $fileObjectType->value, date("Ymd")),
            sprintf("%s.%s", md5(uniqid()), $file->extension()),
        );

        if (! $pathname) {
            return $this->badRequest("File upload failed.");
        }

        $source = $request->get("source", 1);

        $item = [
            'pathname' => $pathname,
            'title' => $request->get("name") ?: $file->getClientOriginalName(),
            'size' => $file->getSize(),
            'extension' => $file->extension(),
            'object_type' => $request->object_type,
            'object_id' => $request->object_id,
            'created_by' => Auth::id(),
            'company_id' => Auth::user()->company_id,
            'source' => $source,
        ];

        if ($item['object_id'] && $source == 1) {
            $version = File::query()
                ->where('object_type', $item['object_type'])
                ->where('object_id', $item['object_id'])
                ->where("title", $item['title'])
                ->count();
            $item['version'] = $version + 1;
        }

        $file = File::query()->create($item);

        return new FileUploadSuccessResource($file);
    }

    public function byObject(string $objectType, string $objectId)
    {
        $fileObjectType = FileObjectType::from($objectType);
        $fileObjectType->modelBuilderAllowed($objectId)->findOrFail($objectId);

        $files = File::query()
            ->with(['createdBy'])
            ->where('object_type', $objectType)
            ->where('object_id', $objectId)
            ->orderByDesc("version")
            ->where("source", 1)
            ->get();


        $items = [];
        foreach ($files->groupBy("title") as $fileItems) {
            $item = (new FileByObjectResource($fileItems->first()))->toArray(request());
            $item['children'] = [];

            foreach ($fileItems as $fileItem) {
                $item['children'][] = new FileByObjectResource($fileItem);
            }

            $items[] = $item;
        }

        return $this->success([
            'data' => $items
        ]);
    }
}