#!/usr/bin/env node
var dust = require('../bin/dust');

exports.list = function(){ 
    dust.github.getJSON(dust.config.mods[dust.config.activeMod].tutorialsIdentifier,function (res){
        formatTutorialsList(res);
    }); 
};



exports.download = function downloadTutorial(id){
    dust.github.getJSON(dust.config.mods[dust.config.activeMod].tutorialsIdentifier,function (res){
        for (var i = 0, iLen = res.length; i < iLen; i++) {
          if(i == parseInt(id, 10)){
            console.log(res[i].description);
            if (dust.shell.test('-d',res[i].name)){
                console.log("Deleting previous download")
                dust.shell.exec('rm -rf ' + res[i].name);
            }
            dust.shell.exec("git clone " + res[i].git_url);
            dust.shell.exec("rm -rf " + res[i].name + '/.git');
            dust.color.reset();
            process.stdout.write("Tutorial: " );
            console.log(res[i].homepage);
            dust.color.reset();
            dust.shell.exit(0);
          }
        }
        console.log("Tutorial with id #" + id + " not found!");
        dust.shell.exit(1);
    }); 
}

function formatTutorialsList(data){
        console.log("-----------------------------------------------------");
    for (var i = 0, iLen = data.length; i < iLen; i++) {
        
        var formattedName = formatName(data[i].name);

        dust.color.bold();
        console.log(padNumber(i,3,'0') + " " + formattedName + " by " + data[i].owner);
        dust.color.reset();
        console.log("Description: " + data[i].description);
        console.log("Indepth Info: " + data[i].homepage);
        console.log("-----------------------------------------------------");
        dust.color.reset();
    }
    dust.color.yellow().bold();
    console.log("you can download any tutorial code with the command: ");
    console.log("             dust tutorials download <id>            ");
    console.log("After the download a link with online help is shown! ");
    dust.color.reset();
}

function padNumber(n, width, z) {
  z = z || '0';
  n = n + '';
  return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n;
}

function formatName(repositoryName){
   var strippedName = repositoryName.match(new RegExp(dust.config.mods[dust.config.activeMod].tutorialsIdentifier + '-[0-9]{3}-(.*)','i'));
   return strippedName = strippedName[1].replace(/-/g, ' ');
}