<?php
/*
* Copyright (c) 2017 Baidu.com, Inc. All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* Http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/

include_once 'lib/AipBase.php';
class AipNlp extends AipBase {
    /**
     * 评论观点抽取 comment_tag api url
     * @var string
     */
    private $commentTagUrl = 'https://aip.baidubce.com/rpc/2.0/nlp/v2/comment_tag';

    /**
     * 情感倾向分析 sentiment_classify api url
     * @var string
     */
    private $sentimentClassifyUrl = 'https://aip.baidubce.com/rpc/2.0/nlp/v1/sentiment_classify';

    /**
     * 文章标签 keyword api url
     * @var string
     */
    private $keywordUrl = 'https://aip.baidubce.com/rpc/2.0/nlp/v1/keyword';

    /**
     * 文章分类 topic api url
     * @var string
     */
    private $topicUrl = 'https://aip.baidubce.com/rpc/2.0/nlp/v1/topic';

    /**
     * 文本纠错 ecnet api url
     * @var string
     */
    private $ecnetUrl = 'https://aip.baidubce.com/rpc/2.0/nlp/v1/ecnet';

    /**
     * 新闻摘要接口 news_summary api url
     * @var string
     */
    private $newsSummaryUrl = 'https://aip.baidubce.com/rpc/2.0/nlp/v1/news_summary';


    /**
     * 格式化结果
     * @param $content string
     * @return mixed
     */
    protected function proccessResult($content){
        return json_decode(mb_convert_encoding($content, 'UTF8', 'GBK'), true, 512, JSON_BIGINT_AS_STRING);
    }


    /**
     * 评论观点抽取接口
     *
     * @param string $text - 评论内容（GBK编码），最大10240字节
     * @param array $options - 可选参数对象，key: value都为string类型
     * @description options列表:
     *   type 评论行业类型，默认为4（餐饮美食）
     * @return array
     */
    public function commentTag($text, $options=array()){

        $data = array();
        
        $data['text'] = $text;

        $data = array_merge($data, $options);
        $data = mb_convert_encoding(json_encode($data), 'GBK', 'UTF8');

        return $this->request($this->commentTagUrl, $data);
    }

    /**
     * 情感倾向分析接口
     *
     * @param string $text - 文本内容（GBK编码），最大102400字节
     * @param array $options - 可选参数对象，key: value都为string类型
     * @description options列表:
     * @return array
     */
    public function sentimentClassify($text, $options=array()){

        $data = array();
        
        $data['text'] = $text;

        $data = array_merge($data, $options);
        $data = mb_convert_encoding(json_encode($data), 'GBK', 'UTF8');

        return $this->request($this->sentimentClassifyUrl, $data);
    }

    /**
     * 文章标签接口
     *
     * @param string $title - 篇章的标题，最大80字节
     * @param string $content - 篇章的正文，最大65535字节
     * @param array $options - 可选参数对象，key: value都为string类型
     * @description options列表:
     * @return array
     */
    public function keyword($title, $content, $options=array()){

        $data = array();
        
        $data['title'] = $title;
        $data['content'] = $content;

        $data = array_merge($data, $options);
        $data = mb_convert_encoding(json_encode($data), 'GBK', 'UTF8');

        return $this->request($this->keywordUrl, $data);
    }

    /**
     * 文章分类接口
     *
     * @param string $title - 篇章的标题，最大80字节
     * @param string $content - 篇章的正文，最大65535字节
     * @param array $options - 可选参数对象，key: value都为string类型
     * @description options列表:
     * @return array
     */
    public function topic($title, $content, $options=array()){

        $data = array();
        
        $data['title'] = $title;
        $data['content'] = $content;

        $data = array_merge($data, $options);
        $data = mb_convert_encoding(json_encode($data), 'GBK', 'UTF8');

        return $this->request($this->topicUrl, $data);
    }

    /**
     * 文本纠错接口
     *
     * @param string $text - 待纠错文本，输入限制511字节
     * @param array $options - 可选参数对象，key: value都为string类型
     * @description options列表:
     * @return array
     */
    public function ecnet($text, $options=array()){

        $data = array();
        
        $data['text'] = $text;

        $data = array_merge($data, $options);
        $data = mb_convert_encoding(json_encode($data), 'GBK', 'UTF8');

        return $this->request($this->ecnetUrl, $data);
    }

    /**
     * 新闻摘要接口接口
     *
     * @param string $content - 字符串（限3000字符数以内）字符串仅支持GBK编码，长度需小于3000字符数（即6000字节），请输入前确认字符数没有超限，若字符数超长会返回错误。正文中如果包含段落信息，请使用"\n"分隔，段落信息算法中有重要的作用，请尽量保留
     * @param integer $maxSummaryLen - 此数值将作为摘要结果的最大长度。例如：原文长度1000字，本参数设置为150，则摘要结果的最大长度是150字；推荐最优区间：200-500字
     * @param array $options - 可选参数对象，key: value都为string类型
     * @description options列表:
     *   title 字符串（限200字符数）字符串仅支持GBK编码，长度需小于200字符数（即400字节），请输入前确认字符数没有超限，若字符数超长会返回错误。标题在算法中具有重要的作用，若文章确无标题，输入参数的“标题”字段为空即可
     * @return array
     */
    public function newsSummary($content, $maxSummaryLen, $options=array()){

        $data = array();
        
        $data['content'] = $content;
        $data['max_summary_len'] = $maxSummaryLen;

        $data = array_merge($data, $options);
        $data = mb_convert_encoding(json_encode($data), 'GBK', 'UTF8');

        return $this->request($this->newsSummaryUrl, $data);
    }


}