scripts/scraping/main.ts

/**
 scrapping des livres de la médiathèque de briis
 **/
// @ts-ignore
import https from 'https';
import WriteFile from "./utils";

const axios = require('axios');
const cheerio = require('cheerio');
const url: string = "www.mediatheque-de-briis-sous-forges.net";
let fetching_path: string = "/mediatheque-de-briis-sous-forges.net/opac/recherche/catalogue?node=0&value=0&page=";

interface Book {
    author: string
    title: string
    description: string
    format: string
    img: string
}

const books: Book[] = [];
// autres pages:
// http://www.mediatheque-de-briis-sous-forges.net/mediatheque-de-briis-sous-forges.net/opac/recherche/catalogue?node=0&value=0&page=2
let page_max = 1927
page_max = 4

const getTables = (html: string): any => {
    const $ = cheerio.load(html);
    const tableElements = $(
        "table.notice"
    );
    return tableElements;
};

const getHtml = async (hostname: string, path: string): Promise<string> =>
    new Promise((resolve, reject) => {
        https
            .get(
                {
                    hostname,
                    path,
                    // port:80,
                    method: "GET",
                },
                (res) => {
                    let html = "";
                    res.on("data", function (chunk) {
                        html += chunk;
                    });
                    res.on("end", function () {
                        resolve(html);
                    });
                }
            )
            .on("error", (error) => {
                console.error(error);
                reject(error);
            });
    });

// fetchData(url).then((res: any) => {
//     const html = res.data;
//     const $ = cheerio.load(html);
//     const statsTable :any = $('table.notice');
//     console.log('statsTable', statsTable)
//     statsTable.each(function(){
//         let elem:any = this;
//         let author = $(elem).find('td').eq(2).text();
//     //     let img = $(this).find('img').attr('src');
//     //     console.log(elem);
//         console.log(author);
//     });
// })


function writeBookScrapping() {
    WriteFile('books.json', JSON.stringify(books, null, 2))
}


// loop on all pages

const scrapOnePage = (tables: any) => {
    tables.each(
        (_: any, table: any) => {
            const $ = cheerio.load(table);
            // console.log('une table')
            // let author = $().find('a.notice').text();
            let text_description = $(table).find('td').eq(1).text();
            let boom = text_description.split('\n');
            let splitting = boom[1].split('/')
            let format = splitting[0].split(':')
            let img_src = $(table).find('td img').attr('src');
            console.log(img_src);
            books.push({
                author: boom[0].trim(),
                title: splitting[0].trim(),
                description: splitting[1].trim(),
                format: format[1].trim(),
                img: img_src
            })
            // console.log(cheerio.load(table).html())
        }
    )
}

async function main() {

    for (let page_counter = 1; page_counter <= page_max; page_counter++) {

        fetching_path = "/mediatheque-de-briis-sous-forges.net/opac/recherche/catalogue?node=0&value=0&page=" + page_counter
        await getHtml(url, fetching_path)
            .then(getTables)
            .then(
                scrapOnePage
            )
            // .then(() => {
            //     if (page_counter === page_max) {
            //     }
            // })
            .catch((error) => console.log(error));

    }
    writeBookScrapping()
}

main()