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var fs = require('fs'); //to access filewrite
var toMarkdown = require ('to-markdown'); //to convert HTML to Markdown
var request = require("request"); //to request the JSON file from the server
var tomlify = require('tomlify'); //to add the frontmatter

//Request options
var options = {
  method: 'GET',
  json: true,
  url: 'YOUR_API_URL',
  /* headers:  
    {   'cache-control': 'no-cache',
        'x-apikey': 'YOUR_API_KEY' } 
    }; optional */

//Request
request(options, function (error, response, body) {
  if (error) throw new Error(error);
        
  var obj = body; //The actual JSON from the API
  console.log("Start converting API to files");

  //Split up the JSON response
  for (var i=0; i<obj.length; i++) {

      var toFrontmatter = obj[i]; 
      var htmlstring = obj[i].content; //The content that goes into the Markdown part
      var markdowntext = toMarkdown(htmlstring); //The HTML conversion
      delete toFrontmatter['_id']; //Deleting the stuff that I do not need to put into the frontmatter
      delete toFrontmatter['content'];   //Deleting the stuff that I do not need to put into the frontmatter
      var obj2 = tomlify(toFrontmatter, {delims: true}); //Creating the frontmatter
      obj2 = obj2 +"\n" + markdowntext; //Putting it all togeter
      var file = './content/posts/' + obj[i].slug+'.md'; //I have set up a slug as the file name in my CMS and don't forget to create the directory structure in advance.
      fs.writeFile(file, obj2, function (err) {  //writing it out to the filesystem
            if (err) {
                console.error(err);
            } else {
                console.log("Done converting API", obj2); 
            }
          });
      }
});