<?php

namespace App\Http\Controllers\Admin;

use App\Exceptions\AdminOptionsInvalidException;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Gate;
use Arr;
use mysql_xdevapi\Exception;
use Str;
use Validator;

/**
 * 網站設定選項
 * Class OptionsController
 * @package App\Http\Controllers\Admin
 */
class OptionsController extends Controller
{
    private $request;

    public function __construct(Request $request)
    {
        $this->request = $request;
    }

    /**
     * 檢查權限
     *
     * @param $gateName
     */
    private function gate($gateName)
    {
        if(Gate::denies($gateName)) {
            abort(403);
        }
    }

    /**
     * 驗證欄位
     *
     * @param $options
     * @throws \Illuminate\Validation\ValidationException
     */
    private function validateOptions($options)
    {
        $rules = collect($options['fields'])
            ->filter(function($item, $key){
                return isset($item['validator']);
            })
            ->map(function($item, $key){
                return $item['validator'];
            });

        $this->validate($this->request, $rules->all());
    }

    /**
     * 更新欄位資料
     *
     * @param $options
     */
    private function update($options)
    {
        $fields = $this->request->only(array_keys($options['fields']));

        $checkboxOptions = collect($options['fields'])
            ->filter(function($item, $key){
                return isset($item['type']) && $item['type'] = 'checkbox';
            });

        foreach ($fields as $key => $value) {
            app('Option')->$key = $value;
        }
        foreach ($checkboxOptions as $key => $checkboxOption) {
            if(!$this->request->has($key)) {
                app('Option')->$key = '';
            }
        }
    }

    /**
     * 處理更新選項的動作並回應
     *
     * @param $options
     * @return \Illuminate\Http\RedirectResponse
     * @throws \Illuminate\Validation\ValidationException
     */
    private function generateResponse($options)
    {
        $this->validateOptions($options);

        $this->update($options);
        return back()->with(['updated' => trans('message.success')]);
    }

    /**
     * 處理更新選項的動作
     *
     * @param string $method
     * @param array $args
     * @return \Illuminate\Http\RedirectResponse|mixed
     * @throws \Exception
     */
    public function __call($method, $args = [])
    {
        $config = config('admin.options');
        if(preg_match('/^update/', $method)) {
            $page = strtolower(preg_replace('/^update/', '', $method));
            if(in_array($page, array_keys($config))) {
                if(!empty($config[$page]['permission'])) {
                    $this->gate('permission:' . Str::kebab($config[$page]['permission']));
                }
                return $this->generateResponse($config[$page]);
            }
        }
        throw new \Exception("method: $method dos not exist");
    }
}