<?php

namespace App\Models;

use App\Helper\Common;
use App\Helper\FileHelper;
use App\Helper\JSONResponse;
use App\Helper\Traits\Models\CanMultiOrderBy;
use App\Helper\Traits\Models\CanMultiSearch;
use Carbon\Carbon;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Http\File;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Storage;

class ApkUpdate extends Model {
    use HasFactory;
    use CanMultiSearch;
    use CanMultiOrderBy;

    protected $table = 'apk_updates';
    protected $hidden = ['file'];
    protected $appends = ['file_url'];

    // ---------------------------------------------------------------------------------------
    // -- RELATED TO SCOPE
    public function scopeNewest(Builder $query){
        return $query->orderByDesc('version_code');
    }
    // -- END RELATED TO SCOPE
    // ---------------------------------------------------------------------------------------

    // ---------------------------------------------------------------------------------------
    // -- RELATED TO GET DATA
    public static function getLatest(){ return self::latest('version_code')->first(); }
    // -- END  RELATED TO GET DATA
    // ---------------------------------------------------------------------------------------

    // ---------------------------------------------------------------------------------------
    // -- RELATED TO MODIFICATION DATA FROM REQUEST
    public static function upsertFromRequest(Request $request) {
        $request->validate([
            'id' => 'nullable|integer|exists:App\Models\ApkUpdate,id',
            'name' => 'required|string',
            'file' => 'required_without:id|file|' . FileHelper::convertToStrLaraValidation(FileHelper::$allowedApkExtensions),
            'version_code' => 'required|integer|min:1',
            'change_note' => 'nullable|string'
        ], [
            'file' => ['required_without' => 'The file field is required.']
        ]);

        $delOldDbFileLocation = '';
        $newDbFileLocation = '';
        try {
            // save photo
            if($request->file) $newDbFileLocation = self::saveFile($request->file)['db_url'];

            // try to upsert data
            DB::beginTransaction();
            $apkUpdate = null;
            if(!$request->id) $apkUpdate = new ApkUpdate();
            else $apkUpdate = ApkUpdate::findOrFail($request->id);

            // del old db file location if has old file
            if($newDbFileLocation) {
                if($apkUpdate->file) $delOldDbFileLocation = $apkUpdate->file;
                $apkUpdate->file = $newDbFileLocation;
            }
            $apkUpdate->name = $request->name;
            $apkUpdate->version_code = $request->version_code;
            $apkUpdate->change_note = $request->change_note;
            $apkUpdate->save();

            // delete old file if exist
            if($delOldDbFileLocation) self::deleteFile($delOldDbFileLocation);
            DB::commit();
            return JSONResponse::Success();
        } catch (\Throwable $th) {
            DB::rollBack();
            if($newDbFileLocation) self::deleteFile($newDbFileLocation);
            throw $th;
        }
    }

    public static function deleteFromRequest(Request $request) {
        $request->validate(['id' => 'required|integer|exists:App\Models\ApkUpdate,id']);
        try {
            DB::beginTransaction();
            $apkUpdate = ApkUpdate::findOrFail($request->id);

            $oldDbFile = $apkUpdate->file;
            $apkUpdate->delete();

            if($oldDbFile) self::deleteFile($oldDbFile);
            DB::commit();
            return JSONResponse::Success();
        } catch (\Throwable $th) {
            DB::rollBack();
            throw $th;
        }

    }
    // -- END RELATED TO MODIFICATION DATA FROM REQUEST
    // ---------------------------------------------------------------------------------------

    // ---------------------------------------------------------------------------------------
    // -- FILE UTILITIES
    protected function fileUrl(): Attribute {
        return Attribute::make(
            fn() => $this->file ? Storage::disk('s3')->url($this->file) : ''
        );
    }
    private static function fileFolder() { return env('STORAGE_FOLDER', 'tivi') . '/apk-upload'; }

    public static function saveFile($file) {
        if (!$file->isValid()) throw new \Exception('File is not valid');

        //Save file to local data
        $fileName = self::getFileName($file);
        $path = self::fileFolder();

        Storage::disk('s3')->put($path . '/' . $fileName, file_get_contents(new File($file)), 'public');
        return  ['db_url' => "$path/$fileName"];
    }
    private static function getFileName($file) {
        $tz = Carbon::now()->timestamp;
        $extension = $file->getClientOriginalExtension();
        $name = "$tz-" . Common::generateRandomString();

        return "$name.$extension";
    }
    public static function deleteFile($dbUrl) { Storage::disk('s3')->delete($dbUrl); }
    // -- END FILE UTILITIES
    // ---------------------------------------------------------------------------------------
}