<?php
/**
 * 【手机端】05-照片、评价点赞接口
 * Created by PhpStorm.
 * @author：wanghuan
 * @date：2017-08-30
 */

namespace Api\Controller\Like;

use Common\Service\LikeService;
use Common\Service\CommentService;
use Common\Service\PlanPicService;

class AddController extends \Api\Controller\AbstractController
{

    /** @var LikeService */
    protected $like_s;
    /** @var CommentService */
    protected $comment_s;
    /** @var PlanPicService */
    protected $pic_s;

    public function before_action($action = '')
    {

        if (!parent::before_action($action)) {

            return false;
        }

        // 实例化点赞service
        $this->like_s = new LikeService();
        // 实例化评论service
        $this->comment_s = new CommentService();
        // 实例化照片service
        $this->pic_s = new PlanPicService();

        return true;
    }

    /**
     * 点赞
     */
    public function Index_post()
    {

        // 培训id
        $ed_id = I('post.ed_id', 0, 'intval');
        // 培训id为空
        if (!$ed_id) {

            E('_EMPTY_ED_ID');
        }

        // 培训详情
        $this->get_education($ed_id);

        // 点赞类型
        $like_type = I('post.like_type', 0, 'intval');
        // 点赞类型为空
        if (!$like_type) {

            E('_EMPTY_LIKE_TYPE');
        }

        // 点赞对象id
        $like_obj_id = I('post.like_obj_id', 0, 'intval');
        // 点赞对象id为空
        if (!$like_obj_id) {

            E('_EMPTY_LIKE_OBJ_ID');
        }

        // 评价点赞
        if (LikeService::LIKE_TYPE_COMMENT == $like_type) {

            $comment_info = $this->comment_s->get($like_obj_id);
            if (empty($comment_info)) {

                E('_EMPTY_COMMENT');
            }
        }

        // 照片点赞
        if (LikeService::LIKE_TYPE_PIC == $like_type) {

            $pic_info = $this->pic_s->get($like_obj_id);
            if (empty($pic_info)) {

                E('_EMPTY_PIC');
            }
        }

        // 待新增点赞数据
        $data = [
            'like_type' => $like_type,
            'like_obj_id' => $like_obj_id,
            'like_uid' => $this->uid,
            'ed_id' => $ed_id
        ];

        // 获取用户点赞数据
        $like_info = $this->like_s->get_by_conds($data);
        // 已经点赞
        if (!empty($like_info)) {

            E('_ERR_LIKE_EXIST');
        }

        try {
            // 开始事务
            $this->like_s->start_trans();

            // 点赞
            $result = $this->like_s->insert($data);

            // 点赞成功，更新点赞量
            if ($result) {
                // 评价点赞
                if (LikeService::LIKE_TYPE_COMMENT == $data['like_type']) {
                    // 评价的点赞量累加1
                    $this->comment_s->update_likes($data['like_obj_id'], self::LIKES_INC);
                } elseif (LikeService::LIKE_TYPE_PIC == $data['like_type']) { // 照片点赞
                    // 照片的点赞量累加1
                    $this->pic_s->update_likes($data['like_obj_id'], self::LIKES_INC);
                }
            } else { // 点赞失败

                $this->like_s->rollback();
            }

            $this->like_s->commit();
        } catch (\Think\Exception $e) {

            $this->like_s->rollback();
            E('_ERR_LIKE_FAIL');

            return false;
        }

        // 点赞失败
        if (!$result) {

            E('_ERR_LIKE_FAIL');
        }

        return true;
    }
}