var extname = require('path').extname;
var Metalsmith = require('metalsmith');
var drafts = require('metalsmith-drafts');
var markdown = require('metalsmith-markdown');
var layouts = require('metalsmith-layouts');
var inplace = require('metalsmith-in-place');
var uglify = require('metalsmith-uglify');
var rename = require('metalsmith-rename');
var metadata = require('metalsmith-metadata');
var fingerprint = require('metalsmith-fingerprint');
var branch = require('metalsmith-branch');
var assets = require('metalsmith-assets');
var paths = require('metalsmith-paths');
var linkchecker = require('metalsmith-broken-link-checker');
var rootpath = require('metalsmith-rootpath');

/**
 * Build.
 */

var metalsmith = Metalsmith(__dirname)
  .source('./src')
  .destination('./site')
  .use(drafts())
  .use(fingerprint({ 
    pattern: 'css/*.css' 
  }))
  // .use(inplace({ "engine" : "handlebars" }))
  .use(markdown())
  .use(assets({
    source: './assets',
    destination: './assets'
  }))
  .use(paths({
    property: "paths"
  }))
  .use(rootpath())
  .use(branch()
    .pattern('**/*.html')
    .use(layouts({ 
    	engine: "handlebars", 
    	default: "default.hbs"
    }))
  )
  .use(linkchecker({
    allowRegex: /^(\/resources|\/slides)/,
    allowRedirect: true
  }))
  // .use(uglify())
  .build(function(err){
    if (err) throw err;
  });