@yeci226/nhentai-ts/src/Parser/doujin.ts

A scraper for NHentai with types

import { CheerioAPI } from 'cheerio'
import { baseURLS, clean, getExtension, Pages, imageSites } from '../lib'
import { TURL, IDoujinInfo } from '../Types'

export const parseDoujinInfo = async (
    $: CheerioAPI,
    site: keyof typeof baseURLS,
    api_pages?: { t: string }[]
): Promise<IDoujinInfo> => {
    const pages: string[] = []
    const dataSrc =
        $('.thumb-container').first().find('a > img').attr('data-src') || ''
    const gallery_id = dataSrc.includes('/galleries/')
        ? dataSrc.split('/galleries/')[1]?.split('/')[0] || ''
        : ''
    if (site === 'net' && api_pages)
        api_pages.forEach((page, i) =>
            pages.push(
                `https://i.nhentai.net/galleries/${gallery_id}/${
                    i + 1
                }.${getExtension(page.t)}`
            )
        )
    else
        for (const el of $('.thumb-container')) {
            const url = ($(el).find('a > img').attr('data-src') || '').replace(
                /t(?=\.)/,
                ''
            )
            if (url) {
                const page = url.replace(imageSites[site], 'i.nhentai.net')
                pages.push(page)
            }
        }
    const cover =
        $('#cover').find('a > img').attr('data-src') ||
        $('#cover').find('a > img').attr('src')
    const href = $('#cover').find('a').attr('href') || ''
    const id = href.includes('g/')
        ? href.split('g/')[1]?.split('/')[0] || ''
        : ''
    const titles = {
        english: $('#info').find('h1').text().trim(),
        original: $('#info').find('h2').text().trim()
    }
    const baseURL = baseURLS[site]
    const parodies: string[] = []
    const characters: string[] = []
    const tags: string[] = []
    const artists: string[] = []
    const groups: string[] = []
    const languages: string[] = []
    const categories: string[] = []
    $('.tag-container.field-name').each((i, el) => {
        const type = $(el).text().trim().toLowerCase()
        const contents: string[] = []
        const push = (field: string[]): void =>
            contents
                .filter((content) => content !== '')
                .forEach((content) => field.push(content))
        $(el)
            .find('.tags')
            .find('a')
            .each((i, el) => {
                contents.push($(el).text().trim().split('\n')[0])
            })
        type.startsWith('parodies')
            ? push(parodies)
            : type.startsWith('characters')
            ? push(characters)
            : type.startsWith('tags')
            ? push(tags)
            : type.startsWith('artists')
            ? push(artists)
            : type.startsWith('groups')
            ? push(groups)
            : type.startsWith('languages')
            ? push(languages)
            : push(categories)
    })
    const url = `${baseURL}/g/${id}` as TURL
    const images = new Pages(pages, titles.english)
    return {
        id,
        title: titles.english,
        originalTitle: titles.original,
        parodies: clean(parodies),
        characters: clean(characters),
        tags: clean(tags),
        artists: clean(artists),
        groups: clean(groups),
        languages: clean(languages),
        categories: clean(categories),
        cover: !pages.some((url) => url.includes('cdn.dogehls.xyz'))
            ? cover.replace('cdn.dogehls.xyz', 't3.nhentai.net')
            : null,
        images,
        url
    }
}