<?php

namespace common\traits;

use Yii;
use yii\data\Pagination;
use yii\base\InvalidConfigException;
use common\helpers\ResultHelper;
use common\enums\StatusEnum;
use common\helpers\ArrayHelper;

/**
 * Trait Curd
 * @property \yii\db\ActiveRecord|\yii\base\Model $modelClass
 * @package common\traits
 */
trait Curd
{
    /**
     * @throws InvalidConfigException
     */
    public function init()
    {
        parent::init();

        if ($this->modelClass === null) {
            throw new InvalidConfigException('"modelClass" 属性必须设置.');
        }
    }

    /**
     * 首页
     *
     * @return mixed
     */
    public function actionIndex()
    {
        $data = $this->modelClass::find()
            ->where(['>=', 'status', StatusEnum::DISABLED]);
        $pages = new Pagination(['totalCount' => $data->count(), 'pageSize' => $this->pageSize]);
        $models = $data->offset($pages->offset)
            ->orderBy('id desc')
            ->limit($pages->limit)
            ->all();

        return $this->render($this->action->id, [
            'models' => $models,
            'pages' => $pages
        ]);
    }

    /**
     * 编辑/创建
     *
     * @return mixed
     */
    public function actionEdit()
    {
        $id = Yii::$app->request->get('id', null);
        $model = $this->findModel($id);
        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->referrer();
        }

        return $this->render($this->action->id, [
            'model' => $model,
        ]);
    }

    /**
     * 伪删除
     *
     * @param $id
     * @return mixed
     */
    public function actionDestroy($id)
    {
        if (!($model = $this->modelClass::findOne($id))) {
            return $this->message("找不到数据", $this->redirect(Yii::$app->request->referrer), 'error');
        }

        $model->status = StatusEnum::DELETE;
        if ($model->save()) {
            return $this->message("删除成功", $this->redirect(Yii::$app->request->referrer));
        }

        return $this->message("删除失败", $this->redirect(Yii::$app->request->referrer), 'error');
    }

    /**
     * 删除
     *
     * @param $id
     * @return mixed
     * @throws \Throwable
     * @throws \yii\db\StaleObjectException
     */
    public function actionDelete($id)
    {
        if ($this->findModel($id)->delete()) {
            return $this->message("删除成功", $this->redirect(Yii::$app->request->referrer));
        }

        return $this->message("删除失败", $this->redirect(Yii::$app->request->referrer), 'error');
    }

    /**
     * ajax更新排序/状态
     *
     * @param $id
     * @return array
     */
    public function actionAjaxUpdate($id)
    {
        if (!($model = $this->modelClass::findOne($id))) {
            return ResultHelper::json(404, '找不到数据');
        }

        $model->attributes = ArrayHelper::filter(Yii::$app->request->get(), ['sort', 'status']);
        if (!$model->save()) {
            return ResultHelper::json(422, $this->getError($model));
        }

        return ResultHelper::json(200, '修改成功');
    }

    /**
     * ajax编辑/创建
     *
     * @return mixed|string|\yii\web\Response
     * @throws \yii\base\ExitException
     */
    public function actionAjaxEdit()
    {
        $id = Yii::$app->request->get('id');
        $model = $this->findModel($id);

        // ajax 校验
        $this->activeFormValidate($model);
        if ($model->load(Yii::$app->request->post())) {
            return $model->save()
                ? $this->redirect(Yii::$app->request->referrer)
                : $this->message($this->getError($model), $this->redirect(Yii::$app->request->referrer), 'error');
        }

        return $this->renderAjax($this->action->id, [
            'model' => $model,
        ]);
    }

    /**
     * 返回模型
     *
     * @param $id
     * @return \yii\db\ActiveRecord
     */
    protected function findModel($id)
    {
        /* @var $model \yii\db\ActiveRecord */
        if (empty($id) || empty($model = $this->modelClass::findOne($id))) {
            $model = new $this->modelClass;
            return $model->loadDefaultValues();
        }

        return $model;
    }
}