/*global Favcount:true*/
var DiscourseResolver = require('discourse/ember/resolver').default;

// Allow us to import Ember
define('ember', ['exports'], function(__exports__) {
  __exports__.default = Ember;
});

window.Discourse = Ember.Application.createWithMixins(Discourse.Ajax, {
  rootElement: '#main',
  _docTitle: document.title,

  getURL: function(url) {
    if (!url) return url;

    // if it's a non relative URL, return it.
    if (!/^\/[^\/]/.test(url)) return url;

    var u = Discourse.BaseUri === undefined ? "/" : Discourse.BaseUri;

    if (u[u.length-1] === '/') u = u.substring(0, u.length-1);
    if (url.indexOf(u) !== -1) return url;
    if (u.length > 0  && url[0] !== "/") url = "/" + url;

    return u + url;
  },

  getURLWithCDN: function(url) {
    url = this.getURL(url);
    // only relative urls
    if (Discourse.CDN && /^\/[^\/]/.test(url)) {
      url = Discourse.CDN + url;
    } else if (Discourse.S3CDN) {
      url = url.replace(Discourse.S3BaseUrl, Discourse.S3CDN);
    }
    return url;
  },

  Resolver: DiscourseResolver,

  _titleChanged: function() {
    var title = this.get('_docTitle') || Discourse.SiteSettings.title;

    // if we change this we can trigger changes on document.title
    // only set if changed.
    if($('title').text() !== title) {
      $('title').text(title);
    }

    var notifyCount = this.get('notifyCount');
    if (notifyCount > 0 && !Discourse.User.currentProp('dynamic_favicon')) {
      title = "(" + notifyCount + ") " + title;
    }

    document.title = title;
  }.observes('_docTitle', 'hasFocus', 'notifyCount'),

  faviconChanged: function() {
    if(Discourse.User.currentProp('dynamic_favicon')) {
      new Favcount(Discourse.SiteSettings.favicon_url).set(
        this.get('notifyCount')
      );
    }
  }.observes('notifyCount'),

  // The classes of buttons to show on a post
  postButtons: function() {
    return Discourse.SiteSettings.post_menu.split("|").map(function(i) {
      return i.replace(/\+/, '').capitalize();
    });
  }.property(),

  notifyTitle: function(count) {
    this.set('notifyCount', count);
  },

  /**
    Log the current user out of Discourse

    @method logout
  **/
  logout: function() {
    Discourse.User.logout().then(function() {
      // Reloading will refresh unbound properties
      Discourse.KeyValueStore.abandonLocal();

      var redirect = Discourse.SiteSettings.logout_redirect;
      if(redirect.length === 0){
        window.location.pathname = Discourse.getURL('/');
      } else {
        window.location.href = redirect;
      }

    });
  },

  authenticationComplete: function(options) {
    // TODO, how to dispatch this to the controller without the container?
    var loginController = Discourse.__container__.lookup('controller:login');
    return loginController.authenticationComplete(options);
  },

  /**
    Start up the Discourse application by running all the initializers we've defined.

    @method start
  **/
  start: function() {

    $('noscript').remove();

    Ember.keys(requirejs._eak_seen).forEach(function(key) {
      if (/\/pre\-initializers\//.test(key)) {
        var module = require(key, null, null, true);
        if (!module) { throw new Error(key + ' must export an initializer.'); }
        Discourse.initializer(module.default);
      }
    });

    Ember.keys(requirejs._eak_seen).forEach(function(key) {
      if (/\/initializers\//.test(key)) {
        var module = require(key, null, null, true);
        if (!module) { throw new Error(key + ' must export an initializer.'); }

        var init = module.default;
        var oldInitialize = init.initialize;
        init.initialize = function(app) {
          oldInitialize.call(this, app.container, Discourse);
        };

        Discourse.instanceInitializer(init);
      }
    });

  },

  requiresRefresh: function(){
    var desired = Discourse.get("desiredAssetVersion");
    return desired && Discourse.get("currentAssetVersion") !== desired;
  }.property("currentAssetVersion", "desiredAssetVersion"),


  assetVersion: Ember.computed({
    get: function() {
      return this.get("currentAssetVersion");
    },
    set: function(key, val) {
      if(val) {
        if (this.get("currentAssetVersion")) {
          this.set("desiredAssetVersion", val);
        } else {
          this.set("currentAssetVersion", val);
        }
      }
      return this.get("currentAssetVersion");
    }
  })
});

// TODO: Remove this, it is in for backwards compatibiltiy with plugins
Discourse.HasCurrentUser = {};

function proxyDep(propName, moduleFunc, msg) {
  if (Discourse.hasOwnProperty(propName)) { return; }
  Object.defineProperty(Discourse, propName, {
    get: function() {
      msg = msg || "import the module";
      Ember.warn("DEPRECATION: `Discourse." + propName + "` is deprecated, " + msg + ".");
      return moduleFunc();
    }
  });
}

proxyDep('computed', function() { return require('discourse/lib/computed') });
proxyDep('Formatter', function() { return require('discourse/lib/formatter') });
proxyDep('PageTracker', function() { return require('discourse/lib/page-tracker').default });
proxyDep('URL', function() { return require('discourse/lib/url').default });
proxyDep('Quote', function() { return require('discourse/lib/quote').default });
proxyDep('debounce', function() { return require('discourse/lib/debounce').default });
proxyDep('View', function() { return Ember.View }, "Use `Ember.View` instead");
