const fs = require('fs')

function collectVakken(dir, child=null){
  files = fs.readdirSync(dir)
  //TODO: catch errors
  //if(err) { console.error("getVakken: readdir:" + err) }

  siteMap = {};

  for(i=files.length-1; i >= 0; i--){
    if(files[i] == 'notes') continue;
    Dfile = files[i]

    //TODO: handel archief

    link = Dfile.toLowerCase().replace(/\ /g, '-')
    p = colectPages(`${dir}/${Dfile}`, link)

    siteMap[link] = {
      title: Dfile,
      url: `/${link}`,
      index: p.index,
      pages: p.pages
    }
  }
  return siteMap
}

function colectPages(dir, baseURL){
  var pages = {index: null, pages: {}}

  try {
    files = fs.readdirSync(dir + '/notes')
  } catch (error) {
    return []
  }

  for(i=files.length-1; i >= 0; i--){
    if(files[i] == 'static') continue;

    if(files[i] == 'index.md'){
      pages[0] = `${dir}/${files[i]}`
      continue
    }

    file = files[i].split('.')
    extention = file.pop()
    fileName = file.join('.')
    file = files[i]
    fileDir = `${dir}/notes/${file}`
    friendlyURL = fileName.toLowerCase().replace(/\ /g, '-')

    type = 'unknown'
    switch(extention){
      case 'pdf':
      case 'md':
        type = extention
        break;
    }

    if(type == 'unknown'){
      console.warn(`501 - file type not suported (${extention}):`, fileDir)
      continue
    }

    pages.pages[friendlyURL] = {
      title: fileName,
      url: `/${baseURL}/${friendlyURL}`,
      file: fileDir,
      type: type
    }
  }
  return pages
}

function main(){
  dir = __dirname.split('/')
  dir.pop()
  dir = dir.join('/')

  siteMap = collectVakken(dir)
  return siteMap
}

module.exports = main()