import { getWork } from "@fujocoded/ao3.js"
import DOM from "fauxdom"
import { readFile } from 'node:fs/promises'
import { join } from 'node:path'
import themes from '@/lib/themes.js'
import baseFonts from '@/lib/baseFonts.js'
import titleFonts from '@/lib/titleFonts.js'

export default async function sanitizeData ({ type, data, props}) {
  const baseFont = props.has('baseFont') ? props.get('baseFont') : process.env.DEFAULT_BASE_FONT
  const baseFontData = baseFonts[baseFont]
  const titleFont = props.has('titleFont') ? props.get('titleFont') : process.env.DEFAULT_TITLE_FONT
  const titleFontData = titleFonts[titleFont]
  const themeData = props.has('theme') ? themes[props.get('theme')] : themes[process.env.DEFAULT_THEME]
  const parentWork = type === 'work' && data.chapterInfo ? await getWork({workId: data.id}) : null
  const bfs = await Promise.all(baseFontData.defs.map(async (bf) => {
    return {
      name: baseFontData.displayName,
      data: await readFile(
        join(process.cwd(), bf.path)
      ),
      style: bf.style,
      weight: bf.weight
    }
  })).then(x => x)
  const tfs = await Promise.all(titleFontData.defs.map(async (tf) => {
    return {
      name: titleFontData.displayName,
      data: await readFile(
        join(process.cwd(), tf.path)
      ),
      style: tf.style,
      weight: tf.weight
    }
  })).then(x => x)
  const authorsFormatted = data.authors
    ? data.authors.map((a) => {
      if (a.anonymous) return "Anonymous"
      if (a.pseud !== a.username) return `${a.pseud} (${a.username})`
      return a.username
    })
    : []
  const authorString = authorsFormatted.length > 1
    ? authorsFormatted.slice(0, -1).join(", ") + " & " +
      authorsFormatted.slice(-1)[0]
    : authorsFormatted[0]
  const summaryContent = type === 'work'
    ? (props.get('summaryType') === 'chapter' && data.chapterInfo && data.chapterInfo.summary ? data.chapterInfo.summary : (props.get('summaryType') === 'custom' && props.has('customSummary') ? props.get('customSummary') : (data.summary ? data.summary : (parentWork ? parentWork.summary : ''))))
    : (props.get('summaryType') === 'custom' && props.has('customSummary') ? props.get('customSummary') : data.notes)
  const summaryDOM = new DOM(summaryContent, {decodeEntities: true});
  const summaryFormatted = summaryDOM.innerHTML.replace(/\<br(?: \/)?\>/g, "\n").replace(
    /(<([^>]+)>)/ig,
    "",
  ).split("\n")
  const titleString = type === 'work' ? data.title : data.name
  const chapterString = data.chapterInfo ? (data.chapterInfo.name
                ? data.chapterInfo.name
  : "Chapter " + data.chapterInfo.index) : null
  const chapterCountString = data.chapters
    ? ' | <b>Chapters:</b> '+data.chapters.published+' / '+(
      data.chapters.total
        ? data.chapters.total
        : '?'
    )
    : ''
  const fandomString = type === 'work' ? (
    data.fandoms.length > 1
      ? (
        data.fandoms.length <= 5
          ? data.fandoms.slice(0, -1).join(", ")+" & "+data.fandoms.slice(-1)
          : data.fandoms.join(", ")+" (+"+(data.fandoms.length - 4)+")"
        )
      : data.fandoms[0]
  ) : (
    data.works.map(w => w.fandoms).reduce((a, b) => { return a.concat(b) }).filter((w, i) => { return i === data.works.indexOf(w) })
  )
  return {
    topLine: fandomString,
    titleLine: titleString,
    authorLine: authorString,
    chapterLine: chapterString,
    summary: summaryFormatted,
    url: 'https://archiveofourown.org/',
    theme: themeData,
    baseFont: baseFont,
    titleFont: titleFont,
    opts: {
      fonts: bfs.concat(tfs)
    }
  }
}