dianhua1560/bhgh

class Event < ActiveRecord::Base
    validates :title, :presence => true
    validates :description, :presence => true
    validate :organizer_is_email
    validates :location, :presence => true
    validates :time, :presence => true
    # validate :time_format_correct

    has_attached_file :avatar
    validates_attachment_content_type :avatar, :content_type => ["image/jpg", "image/jpeg", "image/png", "image/gif"]

    def organizer_is_email
        if not Member.is_email(self.organizer)
            errors.add(:organizer, "Must be valid email address")
        end
    end

    def self.list(myEmail)
        Event.order('time desc').all.map{|x| x.tojson(myEmail)}.to_json
    end

    def do_update(params)
        params[:time] = Event.convert_time_string(params[:time])
        return self.update(params)
    end

    def self.convert_time_string(time_string)
        begin
            return Time.strptime(time_string, "%B %e, %Y")
        rescue
            return nil
        end
    end



    def tojson(myEmail)
        resp = EventResponse.where(event_id: self.id).where(email: myEmail).first
        response = resp ? resp.response : nil
        {
            location: self.location,
            photo_url: self.avatar.exists? ? self.avatar.url : '',
            title: self.title,
            organizer: self.organizer,
            description:description,
            time: self.time,
            time_string: self.time_string,
            type: 'event',
            gravatar: self.gravatar,
            id: self.id,
            response: response,
            can_edit: Member.is_admin_email(myEmail)
        }
    end

    def gravatar
        email = self.organizer ? self.organizer : 'asdf@gmail.com'
        gravatar_id = Digest::MD5.hexdigest(email.downcase)
        return "http://gravatar.com/avatar/#{gravatar_id}.png"
    end


    def time_string
        self.time ? self.time.strftime('%B %d, %Y') : ''
    end

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

    def num_responses(response)
        EventResponse.where(event_id: self.id, response: response).length
    end

end