movie.js

const axios = require("./createAxios")()
const { JSDOM } = require("jsdom")
const { getImageId } = require("./image")

async function getMovieData(movieUrl, { skipNLastPages, numOfPromises }) {
    movieUrl = new URL(movieUrl)
    let i = 1
    let imageUrls2d = []
    while (true) {
        let currImageUrls2dPromises = []
        for (let j = 0; j < numOfPromises; j++) {
            movieUrl.searchParams.set("page", i + j)
            currImageUrls2dPromises.push(getCurrPageImageUrls(movieUrl.toString()))
        }
        let currImageUrls2d = (await Promise.allSettled(currImageUrls2dPromises)).map(el => el.value)
        const errI = currImageUrls2d.findIndex(el => !el)
        if (errI >= 0) {
            imageUrls2d.push(currImageUrls2d.slice(0, errI).flat())
            break
        }
        imageUrls2d.push(currImageUrls2d.flat())
        i+= numOfPromises
    }
    //if (skipNLastPages) imageUrls2d = imageUrls2d.slice(0, -skipNLastPages)

    movieUrl.searchParams.delete("page")
    return {
        movieTitle: new JSDOM((await axios(movieUrl.toString())).data)
            .window.document
            .querySelector(".post_title ").textContent //Cringe css selector lol
            .trim()
            .replace("Images from ", '')
            .replace(': ', ' - ') //File system don't like colons which usually appear in movies' title
            .replace('/', '-'), //F*** you Fate series
        movieUrl,
        imageUrls: imageUrls2d.flat()
    }

}

async function getCurrPageImageUrls(movieUrl) {
    const { data: pageHtml } = await axios(movieUrl)
    const { document } = (new JSDOM(pageHtml)).window
    const imagesContainerEl = document.querySelector(".post_title ").nextElementSibling
    if (Number(document.querySelector("li.active").textContent.trim()) !== Number(new URL(movieUrl).searchParams.get("page"))) {
        throw new Error("Page number invalid")
    }
    return [...imagesContainerEl.querySelectorAll("img.imageFade")].map(el => `https://cdni.fancaps.net/file/fancaps-movieimages/${getImageId(el.src)}.jpg`)
}

module.exports = { getMovieData, getCurrPageImageUrls }