import axios from 'axios'
import * as cheerio from 'cheerio'

const BASE_URL = 'https://www.zerochan.net'
const UA = 'MithraEX - kyiov'

function absolutize(url) {
    if (!url) return null
    if (/^https?:\/\//i.test(url)) return url
    return `${BASE_URL}${url.startsWith('/') ? '' : '/'}${url}`
}

export async function zerochanSearch(query, page = 1) {
    if (!query) throw new Error('Query is required.')

    const url = `${BASE_URL}/search?q=${encodeURIComponent(query)}&p=${page}`
    const { data } = await axios.get(url, {
        headers: {
            'User-Agent': UA,
            'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,webp,*/*;q=0.8'
        },
        validateStatus: (status) => status === 200 || status === 404,
        timeout: 20000
    })

    const $ = cheerio.load(data)
    const results = []

    $('#thumbs2 li, #thumbs li').each((_, el) => {
        const a = $(el).find('a.thumb').first()
        const img = $(el).find('img').first()
        const title = img.attr('alt') || a.attr('title') || $(el).find('p a').text().trim()
        const href = a.attr('href')
        const cover = absolutize(img.attr('data-src') || img.attr('src'))
        const id = $(el).attr('data-id') || (href ? href.replace(/[^\d]/g, '') : null)

        if (title && href) {
            results.push({
                id,
                title,
                url: absolutize(href),
                cover,
                meta: img.attr('title') || null
            })
        }
    })

    return results
}

export async function zerochanDetail(urlOrId) {
    if (!urlOrId) throw new Error('URL or ID is required.')

    const url = /^https?:\/\//i.test(urlOrId) ? urlOrId : `${BASE_URL}/${urlOrId}`
    const { data } = await axios.get(url, {
        headers: {
            'User-Agent': UA,
            'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,webp,*/*;q=0.8'
        },
        validateStatus: (status) => status === 200 || status === 404,
        timeout: 20000
    })

    const $ = cheerio.load(data)
    const title = $('h1').first().text().trim() || $('.content h1').first().text().trim() || 'Zerochan Image'
    const cover = absolutize($('img').first().attr('data-src') || $('img').first().attr('src'))
    const metaText = $('img').first().attr('title') || $('.meta').text().trim() || ''

    return {
        title,
        cover,
        source: url,
        metaText
    }
}

export default { zerochanSearch, zerochanDetail }