<?php

namespace App\Admin\Forms;

use App\Enums\PointLogAction;
use App\Models\User;
use App\Services\PointService;
use Dcat\Admin\Admin;
use Dcat\Admin\Contracts\LazyRenderable;
use Dcat\Admin\Traits\LazyWidget;
use Dcat\Admin\Widgets\Form;
use Illuminate\Support\Facades\DB;
use Throwable;

class PointChange extends Form implements LazyRenderable
{
    use LazyWidget;

    protected function authorize($user): bool
    {
        return $user->can('dcat.admin.users.change_points');
    }

    public function handle(array $input)
    {
        $changePoints = (int) $input['change_points'];

        if ($changePoints < 0) {
            return $this->response()->error('积分必须大于1');
        }

        $action = PointLogAction::from($input['action']);

        if ($action === PointLogAction::Deduction) {
            $changePoints = -$changePoints;
        }

        $user = User::findOrFail($this->payload['id']);

        try {
            DB::beginTransaction();

            (new PointService())->change($user, $changePoints, $action, $input['remark'], null, Admin::user());

            DB::commit();
        } catch (Throwable $th) {
            DB::rollBack();

            report($th);

            return $this->response()->error('操作失败：'.$th->getMessage());
        }

        return $this->response()
                    ->success(__('admin.update_succeeded'))
                    ->refresh();
    }

    /**
     * Build a form here.
     */
    public function form()
    {
        $this->radio('action', '操作')
            ->options([
                PointLogAction::Recharge->value => '充值',
                PointLogAction::Deduction->value => '扣减',
            ])
            ->default(PointLogAction::Recharge->value)
            ->required();
        $this->currency('change_points', '积分')->symbol('￥')->saving(function ($value) {
            return bcmul($value, 100);
        })->required();
        $this->textarea('remark', '备注')->required();
        $this->confirm('是否确认变更？', '提交后该动作无法逆转');
    }
}