import path from 'path'
import fs from "fs"

class Node {
  _markdownFolder;
  _filesList;

  isFile = (filename) => {
    try {
      return fs.existsSync(filename)
    } catch (err) {
      console.error(err)
      return false
    }

  }

  getFullPath = (folderPath) => {
    return fs.readdirSync(folderPath).map(fn => path.join(folderPath, fn))
  }

  getFiles = (dir) => {
    if (this._filesList) return this._filesList
    var results = [];
    var list = fs.readdirSync(dir);
    const outterThis = this
    list.forEach(function(file) {
      file = dir + '/' + file;
      var stat = fs.statSync(file);
      if (stat && stat.isDirectory()) {
        /* Recurse into a subdirectory */
        results = results.concat(outterThis.getFiles(file));
      } else {
        /* Is a file */
        results.push(file);
      }
    });

    const filtered = results.filter(f => f.endsWith(".md"))

    this._filesList = filtered
    return this._filesList
  }

  readFileSync = (fullPath) => {
    return fs.readFileSync(fullPath, "utf8")
  }

  getMarkdownFolder = () => {
    if (this._markdownFolder) return this._markdownFolder
    const notesDir = path.join(process.cwd(), 'notes')
    if (!this.isFile(notesDir)) {
      console.warn("Notes Directory does not seem to exist: ", notesDir)
    }
    this._markdownFolder = notesDir
    return this._markdownFolder
  }
}

const node = new Node()
export default node