const settings = require('./settings')
const fs = require('fs')

module.exports = generateSiteMap()

/** Generate full site map
 * 
 * @returns {Object} full site map
 */
function generateSiteMap(){
  return scanDirectory(settings.siteTitle, __dirname + settings.searchDir)
}

/** Generates a object containing a list of all pages
 * 
 * @param {String} dir directory source of the pages
 * @param {Array} files list of the file in the directory
 * @returns {Object} siteMap list of pages
 */
function scanPages(dir, files){
  var pages = {}

  for(i=files.length-1; i >= 0; i--){
    var file, path, urlName, extention, fileName
    file = files[i] // full file name
    path = `${dir}/${file}` // full path to file
    fileName = file.split('.')
    extention = fileName.pop() // extention
    fileName = fileName.join('.') // filename without extention
    urlName = fileName.toLowerCase().replace(/\ /g, '-') // url friendly file name

    // skip files called index
    if(fileName == 'index'){
      continue
    }

    // if directory
    if(fs.lstatSync(path).isDirectory()){
      pages[urlName] = scanDirectory(file, path)
      continue
    }

    // is file
    pages[urlName] = {
      title: fileName,
      type: extention,
      file: path
    }
  }
  return pages
}

/**
 * 
 * @param {String} dirname directory name
 * @param {String} path Path to the directory
 */
function scanDirectory(dirname, path){
  var index
  var files = fs.readdirSync(path);

  if((index = files.indexOf('index.md')) != -1){
    var fileName, extention
    fileName = files[index].split('.')
    extention = fileName.pop()
    fileName = fileName.join('.')
    index = {
      title: fileName,
      type: extention,
      file: `${path}/${files[index]}`
    }
  }else{
    index = false
  }

  return {
    title: String (dirname),
    type: "directory",
    file: String (path),
    index: (index) ? index : {
      title: String (dirname),
      type: 'index',
      file: String (path)
    },
    subPages: scanPages(path, files)
  }
}