'use strict';
angular.module('myApp.post', ['ngRoute'])

.config(['$routeProvider', function($routeProvider) {
  $routeProvider.when('/post', {
    templateUrl: 'views/post/post.html',
    controller: 'PostCtrl as Post'
  });
}])

.controller('PostCtrl'
  , ['$scope', '$location', '$timeout', 'Desirae'
  , function ($scope, $location, $timeout, Desirae) {
  var scope = this
    ;

  function init() {
    console.log('desi loading');
    Desirae.meta().then(function (desi) {
      scope.blogdir = desi.blogdir.path.replace(/^\/(Users|home)\/[^\/]+\//, '~/');
      scope.site = desi.site;
      updateDate();
    }).catch(function (e) {
      window.alert("An Error Occured. Most errors that occur in the init phase are parse errors in the config files or permissions errors on files or directories, but check the error console for details.");
      console.error(e);
      throw e;
    });
  }

  scope.extensions = ['md', 'html'];

  scope.selected = {
    format: 'md'
  , permalink: "/article/new.md"
  , uuid: window.uuid.v4()
  , post: { 
      yml: {
        title: ""
      , permalink: "/article/new.md"
      , date: Desirae.toDesiDate(new Date())// "YYYY-MM-DD HH:MM pm" // TODO desirae
      , updated: null
      , description: ""
      , categories: []
      , tags: []
      , theme: null
      , layout: null
      , swatch: null
      }
    }
  };
  scope.selected.date = scope.selected.post.yml.date;
  scope.selected.post.frontmatter = window.jsyaml.dump(scope.selected.post.yml).trim();

  scope.onChange = function () {
    var post = scope.selected.post
      , selected = scope.selected
      ;

    post.yml.title = post.yml.title || '';
    post.yml.description = post.yml.description || '';

    if (selected.permalink === post.yml.permalink) {
      selected.permalink = '/articles/' + post.yml.title.toLowerCase()
        .replace(/["']/g, '')
        .replace(/\W/g, '-')
        .replace(/^-+/g, '')
        .replace(/-+$/g, '')
        .replace(/--/g, '-')
        + '.' + selected.format
        ;

      post.yml.permalink = selected.permalink;
    }
    if (window.path.extname(post.yml.permalink) !== '.' + selected.format) {
     post.yml.permalink = post.yml.permalink.replace(/\.\w+$/, '.' + selected.format);
    }

    post.frontmatter = window.jsyaml.dump(post.yml).trim();

    // TODO use some sort of filepath pattern in config.yml
    selected.path = window.path.join((selected.collection || 'posts'), window.path.basename(post.yml.permalink));
  };
  scope.onFrontmatterChange = function () {
    var data
      ;

    try {
      if (!scope.selected.post.frontmatter || !scope.selected.post.frontmatter.trim()) {
        throw new Error('deleted frontmatter');
      }
      data = window.jsyaml.load(scope.selected.post.frontmatter);
      scope.selected.format = data.permalink.replace(/.*\.(\w+$)/, '$1');
      if (!data.permalink) {
        data = scope.selected.permalink;
      }
      scope.selected.post.yml = data;
    } catch(e) {
      console.error(e);
      console.error('ignoring update that created parse error');
      scope.selected.post.frontmatter = window.jsyaml.dump(scope.selected.post.yml).trim();
    }
  };

  function updateDate() {
    $timeout.cancel(scope.dtlock);
    scope.dtlock = $timeout(function () {
      if (scope.selected && scope.selected.date === scope.selected.post.yml.date) {
        scope.selected.date = scope.selected.post.yml.date = Desirae.toDesiDate(new Date());
      }
      scope.onChange();
      updateDate();
    }, 60 * 1000);
  }

  scope.upsert = function () {
    console.log('upserted');
    if (-1 === scope.extensions.indexOf(scope.selected.format)) {
      window.alert('.' + scope.selected.format + ' is not a supported extension.\n\nPlease choose from: .' + scope.extensions.join(' .'));
      return;
    }

    scope.selected.post.yml.uuid = scope.selected.uuid;
    ['updated', 'theme', 'layout', 'swatch'].forEach(function (key) {
      if (!scope.selected.post.yml[key]) {
        delete scope.selected.post.yml[key];
      }
    });
    scope.onChange();

    var files = []
      ;

    files.push({
      path: scope.selected.path
    , contents: 
          '---\n'
        + scope.selected.post.frontmatter.trim()
        + '\n'
        + '---\n'
        + '\n'
        + scope.selected.post.body.trim()
    });

    console.log(files);
    Desirae.putFiles(files).then(function (results) {
      console.log('TODO check for error');
      console.log(results);
      $location.path('/build');
    }).catch(function (e) {
      $timeout.cancel(scope.dtlock);
      console.error(scope.site);
      console.error(e);
      window.alert("Error Nation! :/");
      throw e;
    });
  };

  init();
}]);