Files
old-tellall/backend/helpers/externalSource.js

99 lines
3.0 KiB
JavaScript

let request = require ('request');
let Parser = require ('rss-parser');
let summarizer = require ('node-summary');
const constants = require ('../config/constants');
let parser = new Parser ();
getDataFromRSSFeed = function (url) {
//let feed = await parser.parseURL(url);
//console.log(feed.title);
//feed.items.forEach(item => {
// console.log(item.title + ':' + item.link)
//});
};
getDataFromWPJSON = function (sourceUrl, page = 1, maxPosts = 10) {
return new Promise ((resolve, reject) => {
var options = {
method: 'GET',
url: `${sourceUrl}/wp-json/wp/v2/posts`,
qs: {
page: page,
per_page: maxPosts,
},
};
request (options, (error, response, body) => {
if (error) {
reject (error);
} else {
resolve (JSON.parse (body));
}
});
});
};
summarizeText = function (title, text) {
return new Promise ((resolve, reject) => {
summarizer.summarize (title, text, (err, summary) => {
if (err) {
reject (err);
} else {
resolve (summary);
}
});
});
};
module.exports = {
getAnswerFromWP: function (sourceUrl) {
//This function will extract needed data from JSON, which we got from getDataFromWPJSON
//At the moment, it's taking titles and creates answer
return new Promise ((resolve, reject) => {
getDataFromWPJSON (sourceUrl)
.then (rawData => {
let result = '';
rawData.forEach (post => {
result += post.title.rendered + `<break time="${constants.voiceResponseTimings.PAUSE_BETWEEN_TITLES}ms"/> `;
});
resolve (result);
})
.catch (err => {
reject (constants.voiceResponseString.ERROR_FETCHING_CONTENT);
});
});
},
getLatestNewsFromWP: function (sourceUrl, postCount = 10, includeTitle = false) {
return new Promise ((resolve, reject) => {
getDataFromWPJSON (sourceUrl, 1, postCount)
.then (rawData => {
let result = '';
let summarizers = [];
rawData.forEach (post => {
summarizers.push (
summarizeText (post.title.rendered, post.content.rendered).then(summary=>{
result += (includeTitle) ? post.title.rendered : '';
result += (includeTitle) ? `<break time="${constants.voiceResponseTimings.PAUSE_BETWEEN_TITLE_AND_CONTENT}ms"/>` : '';
result += summary;
result += `<break time="${constants.voiceResponseTimings.PAUSE_BETWEEN_NEWS}ms"/>`;
}).catch(err=>{
result += constants.voiceResponseString.ERROR_SUMMARIZING_CONTENT;
result += `<break time="${constants.voiceResponseTimings.PAUSE_BETWEEN_NEWS}ms"/>`;
})
);
});
Promise.all(summarizers).then(()=>{
resolve(result);
}).catch(()=>{
reject(result);
});
})
.catch (err => {
reject (constants.voiceResponseString.ERROR_FETCHING_CONTENT);
});
});
},
};