112 lines
2.9 KiB
JavaScript
112 lines
2.9 KiB
JavaScript
let request = require ('request');
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let Parser = require ('rss-parser');
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let summarizer = require ('nodejs-text-summarizer');
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var htmlToText = require ('html-to-text');
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const constants = require ('../config/constants');
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let parser = new Parser ();
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getDataFromWPJSON = function (sourceUrl, page = 1, maxPosts = 10) {
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return new Promise ((resolve, reject) => {
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var options = {
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method: 'GET',
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url: `${sourceUrl}/wp-json/wp/v2/posts`,
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qs: {
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page: page,
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per_page: maxPosts,
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},
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};
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request (options, (error, response, body) => {
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if (error) {
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reject (error);
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} else {
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resolve (JSON.parse (body));
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}
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});
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});
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};
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summarizeText = function (text, length, clearText = true) {
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if (clearText) {
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text = htmlToText.fromString (text, {
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wordwrap: false,
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ignoreHref: true,
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ignoreImage: true,
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});
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}
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return summarizer (text, {n: length});
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};
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getTitlesFromWP = function (sourceUrl) {
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return new Promise ((resolve, reject) => {
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getDataFromWPJSON (sourceUrl)
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.then (rawData => {
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let result = '';
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rawData.forEach (post => {
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result +=
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post.title.rendered +
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`<break time="${constants.voiceResponseTimings.PAUSE_BETWEEN_TITLES}ms"/> `;
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});
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resolve (result);
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})
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.catch (err => {
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reject (constants.voiceResponseStrings.ERROR_FETCHING_CONTENT);
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});
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});
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};
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getLatestNewsFromWP = function (
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sourceUrl,
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postCount = 10,
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includeTitle = false
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) {
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return new Promise ((resolve, reject) => {
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getDataFromWPJSON (sourceUrl, 1, postCount)
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.then (rawData => {
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let result = '';
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let htmlToTextOptions = {
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wordwrap: false,
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ignoreHref: true,
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ignoreImage: true,
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};
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try {
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rawData.forEach (post => {
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result += includeTitle ? post.title.rendered : '';
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result += includeTitle
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? `<break time="${constants.voiceResponseTimings.PAUSE_BETWEEN_TITLE_AND_CONTENT}ms"/>`
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: '';
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result += summarizeText (
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post.content.rendered,
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constants.FIXED_SUMMARY_LENGTH
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);
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result += `<break time="${constants.voiceResponseTimings.PAUSE_BETWEEN_NEWS}ms"/>`;
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});
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resolve (result);
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} catch (err) {
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reject (constants.voiceResponseStrings.ERROR_SUMMARIZING_CONTENT);
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}
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})
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.catch (err => {
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reject (constants.voiceResponseStrings.ERROR_FETCHING_CONTENT);
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});
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});
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};
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module.exports = {
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getAnswerFromWP: function (sourceUrl, contentType) {
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//This function will extract needed data from JSON, which we got from getDataFromWPJSON
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switch (contentType) {
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case constants.contentType.TITLES:
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return getTitlesFromWP (sourceUrl);
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break;
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case constants.contentType.NEWS:
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return getLatestNewsFromWP (sourceUrl);
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break;
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}
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},
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};
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