import ValidationEngine from 'ghost/mixins/validation-engine';

var Post = DS.Model.extend(ValidationEngine, {
    validationType: 'post',

    uuid: DS.attr('string'),
    title: DS.attr('string', {defaultValue: ''}),
    slug: DS.attr('string'),
    markdown: DS.attr('string', {defaultValue: ''}),
    html: DS.attr('string'),
    image: DS.attr('string'),
    featured: DS.attr('boolean', {defaultValue: false}),
    page: DS.attr('boolean', {defaultValue: false}),
    status: DS.attr('string', {defaultValue: 'draft'}),
    language: DS.attr('string', {defaultValue: 'en_US'}),
    meta_title: DS.attr('string'),
    meta_description: DS.attr('string'),
    author: DS.belongsTo('user',  { async: true }),
    created_at: DS.attr('moment-date'),
    created_by: DS.belongsTo('user', { async: true }),
    updated_at: DS.attr('moment-date'),
    updated_by: DS.belongsTo('user', { async: true }),
    published_at: DS.attr('moment-date'),
    published_by: DS.belongsTo('user', { async: true }),
    tags: DS.hasMany('tag', { embedded: 'always' }),

    //## Computed post properties
    isPublished: Ember.computed.equal('status', 'published'),
    isDraft: Ember.computed.equal('status', 'draft'),

    // remove client-generated tags, which have `id: null`.
    // Ember Data won't recognize/update them automatically
    // when returned from the server with ids.
    updateTags: function () {
        var tags = this.get('tags'),
        oldTags = tags.filterBy('id', null);

        tags.removeObjects(oldTags);
        oldTags.invoke('deleteRecord');
    }
});

export default Post;