dianhua1560/bhgh

class Post < ActiveRecord::Base
    has_many :post_responses, :dependent => :destroy
    validates :title, :presence => true
    validates :body, :presence => true
    def self.list(myEmail)
        Post.all.order("created_at desc").map{|x| x.tojson(myEmail)}.to_json
    end
    
    def tojson(myEmail)
        {
            title: self.title,
            id: self.id,
            created_at: self.created_at,
            timestamp: self.timestamp,
            comments: self.comments.map{|x| x.tojson(myEmail)},
            author: self.author,
            gravatar: self.gravatar,
            is_mine: self.is_mine(myEmail),
            body: self.body,
            can_edit: self.can_edit(myEmail)
        }
    end

    def self.do_new(params)
        return Post.new(params)
    end

    def can_edit(myEmail)
        self.author == myEmail or Member.is_admin_email(myEmail)
    end

    def is_mine(myEmail)
        return self.author == myEmail
    end

    def gravatar
        email = self.author ? self.author : 'asdf@gmail.com'
        gravatar_id = Digest::MD5.hexdigest(email.downcase)
        return "http://gravatar.com/avatar/#{gravatar_id}.png"
    end
    
    def comments
        PostResponse.where(post_id: self.id).order('created_at desc').to_a
    end
    
    def timestamp
        self.created_at.in_time_zone('Pacific Time (US & Canada)').strftime("%B %d, %Y at %r")
    end

    def num_clicks
        Click.where(path: "/forum/click/#{self.id}").length
    end
end