import Parser from 'rss-parser';
import {diffDaysBetweenTwoDates} from "./utils.mjs";

const parser = new Parser()

/**
 * fetch and return a parsed rss feed
 * @param url
 * @returns {Promise<*>}
 */
export async function parseRssFeed(url){
    let parsedFeed = await parser.parseURL(url);

    console.log(parsedFeed.title);

    parsedFeed.items.forEach((item) => {
        console.log(item.title);
    });
    return parsedFeed
}

/**
 * get a subset of rss parsed items
 * @param parsedRssFeed
 * @param days
 * @returns {T[]}
 */
export function getArticlesFromDaysInRssFeed(parsedRssFeed , days=7) {

    // return parsedRssFeed.items.splice(0,days);
    return parsedRssFeed.items.splice(0,6);
}


export function makeTitleContentFromRss(parsedFeed) {

    let content = ''
    let counter = 0;
    if (!parsedFeed.length) {
        return '';
    }
    parsedFeed.forEach((item) => {
        // if (!counter) {
        //     console.log('first item', item)
        // }
        let cleanedTitle= item.title.replace('[','').trim()
        cleanedTitle= cleanedTitle.replace(']','').trim()
        content += `\n* [${cleanedTitle}](${item.link}) `;
        content += `\n  ${item.isoDate.substring(0,10)} : ${item.contentSnippet.split('\n')[0]} \n`;
        counter++;
    });
    return content;
}

/**
 * get a subset of articles in a specified range number of days in the past
 * @param json_content
 * @param nbOfDays
 * @returns {[]}
 */
export function getArticlesFromDaysInJson(json_content,nbOfDays){

    let today =  new Date()
    let selectedEvents = [];

    console.log('getArticlesFromDaysInJson: filtre nbOfDays', nbOfDays)
    console.log('events ', json_content.length)
    json_content.forEach((item) => {

        let differenceDays = diffDaysBetweenTwoDates(new Date(item.start_time) ,today);

        if( differenceDays < nbOfDays){
            console.log('on garde', differenceDays,item.city, item.title)
            selectedEvents.push(item)
        }
        // else{
        //     console.log('on ne garde pas', differenceDays,item.city, item.title)
        // }
    })

    return selectedEvents
}