<?php

namespace App\Admin\Forms;

use App\Enums\DrawActivityStatus;
use App\Exceptions\BizException;
use App\Models\DrawActivity;
use Dcat\Admin\Contracts\LazyRenderable;
use Dcat\Admin\Traits\LazyWidget;
use Dcat\Admin\Widgets\Form;

class DrawActivityPublish extends Form implements LazyRenderable
{
    use LazyWidget;

    public const METHOD_NONE = 1;    // 暂不发布
    public const METHOD_QUICK = 2;      // 立即发布
    public const METHOD_TIMER = 3;      // 定时发布

    /**
     * @param Model|Authenticatable|HasPermissions|null $user
     *
     * @return bool
     */
    protected function authorize($user): bool
    {
        return $user->can('dcat.admin.draw_activities.publish');
    }

    /**
     * Handle the form request.
     *
     * @param array $input
     *
     * @return mixed
     */
    public function handle(array $input)
    {
        $drawActivity = DrawActivity::findOrFail($this->payload['id']);

        if ($drawActivity->isPublished()) {
            throw new BizException('活动已发布');
        }

        $method = (int) $input['method'];

        if ($method === static::METHOD_NONE) {
            $drawActivity->update([
                'status' => DrawActivityStatus::Created,
                'published_at' => null,
            ]);
        } else {
            $prizes = $drawActivity->prizes()->get();

            if ($prizes->isEmpty()) {
                throw new BizException('活动未设置奖品');
            }

            if ($prizes->sum('weight') == 0) {
                throw new BizException('活动奖品总权重值不能为0');
            }

            $drawActivity->update([
                'status' => DrawActivityStatus::Running,
                'published_at' => match ($method) {
                    static::METHOD_TIMER => $input['published_at'],
                    default => now(),
                },
            ]);
        }

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

    /**
     * Build a form here.
     */
    public function form()
    {
        $this->radio('method', '发布方式')
            ->options([
                static::METHOD_NONE => '暂不发布',
                static::METHOD_QUICK => '立即发布',
                static::METHOD_TIMER => '定时发布',
            ])
            ->when(static::METHOD_TIMER, function () {
                $this->datetime('published_at')
                    ->rules(['bail', 'required_if:method,'.static::METHOD_TIMER], ['required_if' => '不能为空']);
            });
    }

    public function default()
    {
        $drawActivity = DrawActivity::findOrFail($this->payload['id']);

        return [
            'method' => match ($drawActivity->real_status) {
                DrawActivityStatus::Publishing => static::METHOD_TIMER,
                default => static::METHOD_QUICK,
            },
            'published_at' => $drawActivity->published_at,
        ];
    }
}