MediaWiki:Gadget-categorynewsfeed.js

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/*
categorynewsfeed.js creates a newsfeed in the categories of Russian Wikinews.
creator: Alexander Krassotkin ([[User:Krassotkin]]), Simon Krassotkin ([[User:DonSimon]])
created: 20210825
version: 20220903
history: 20210825-20220903
*/

"use strict";

const countOfNewsString = 50;
const wikinewsApiEndpoint = "https://ru.wikinews.org/w/api.php";
const wikinewsApiMobileEndpoint = "https://ru.m.wikinews.org/w/api.php";
const wikinewsArticleUrlPrefix = "https://ru.wikinews.org/wiki/";
const wikinewsMobileArticleUrlPrefix = "https://ru.m.wikinews.org/wiki/";
const wikinewsSearchStaticParams = "action=query&list=search&srnamespace=0&srsort=create_timestamp_desc&format=json"; 

let newsFeedLocationElement = null;

function main() {
 newsFeedLocationElement = document.getElementById("newsFeedLocation");
 if(newsFeedLocationElement == null) {
  //console.log("categorynewsfeed:main: newsFeedLocation element not found.");
  return;
 }
 // newsFeedLocationElement.innerHTML = "<hr /><hr />";
 let articleUrlPrefix = "";
 let apiBaseUrl = "";
 var myUrl = document.location.href;
 if(myUrl.indexOf("ru.m") >= 0) {
 	articleUrlPrefix = wikinewsMobileArticleUrlPrefix;
	apiBaseUrl = wikinewsApiMobileEndpoint;
	var back = document.getElementById("background");
	if(back != null) {
		document.getElementById("background").style.display = 'none';
	}
 } else {
 	articleUrlPrefix = wikinewsArticleUrlPrefix;
 	apiBaseUrl = wikinewsApiEndpoint;
 }
 let categoryTitle = "";
 var categoryName = "";
 var value = document.getElementById('firstHeading').innerText; 
 if(value == null) {
 	//console.log("categorynewsfeed:main: firstHeading element not found.");
 	var wiki_title = document.title;
 	value = wiki_title.slice(0, -14); 
 	return;
 }
 var categoryState = value.substring(0, 10);
 categoryTitle = value.substring(10);
 if(categoryState == "Категория:") {
 	categoryName = categoryTitle;
 } else {
 	console.log("categorynewsfeed:main: This is not a category.");
 	return;
 }
 // console.log("categorynewsfeed:main: This is a category by name: " + categoryName);
 let encodedSearchString = encodeURI("incategory:\"" + categoryName + "\"");
 encodedSearchString += "+" + encodeURI("-incategory:\"Архивные новости\"") + "+" + encodeURI("-incategory:\"Не публиковать\"");
 encodedSearchString += "+" + encodeURI("-incategory:\"Ожидаемые события по датам\"") + "+" + encodeURI("-incategory:\"Викиновости коротко\"");
 let wikinewsSearchUrl = apiBaseUrl + "?" + wikinewsSearchStaticParams + "&srlimit=" + countOfNewsString + "&srsearch=" + encodedSearchString;
 // console.log("categorynewsfeed:main:wikinewsSearchUrl: " + wikinewsSearchUrl);
 fetch(wikinewsSearchUrl).then(response => response.json()).then(data => processWikinewsList(data, articleUrlPrefix));
}

async function processWikinewsList(responseJson, articleUrlPrefix) {
 // console.log("categorynewsfeed:processWikinewsList:responseJson: " + responseJson);
 // console.log("categorynewsfeed:processWikinewsList:responseJson string: " + JSON.stringify(responseJson));
 let countOfNews = responseJson.query.searchinfo.totalhits;
 // console.log("categorynewsfeed:processWikinewsList:countOfNews: " + countOfNews);
 let feeds = "";
 if(countOfNews > 0) {
  feeds = "<div style=\"border-bottom:1px solid #a2a9b1;font-family:'Linux Libertine','Georgia','Times',serif;font-size:1.5em;font-weight:normal;margin-top:1em;\">Последние новости</div>\n";
  feeds += "<ul class=\"feeds\" style=\"font-size:1em;\">\n";
  for(const articlejson of responseJson.query.search) {
   let feedElement = " <li class=\"feedElement\"><a href=\"" + articleUrlPrefix + encodeURI(articlejson.title) + "\">" + articlejson.title + "</a></li>\n";
   feeds += feedElement;
  }
  feeds += "</ul>";
 }
 newsFeedLocationElement.innerHTML = feeds;
}

main();