class User < ApplicationRecord

  has_one: :calendar

  devise :database_authenticatable, :registerable,
  :recoverable, :rememberable, :trackable, :validatable,
  :omniauthable, :omniauth_providers => [:google_oauth2]

  def self.from_omniauth(access_token)
    data = access_token.info
    user = User.where(:email => data["email"]).first

    unless user
      password = Devise.friendly_token[0,20]
      user = User.create(name: data["name"], email: data["email"],
        password: password, password_confirmation: password
        )
    end
    user
  end

  def self.find_for_google_oauth2(oauth, signed_in_resource=nil)
    credentials = oauth.credentials
    data = oauth.info
    user = User.where(email: data["email"]).first


  unless user
   user = User.create(
    first_name: data["first_name"],
    last_name: data["first_name"],
    picture: data["image"],
    email: data["email"],
    password: Devise.friendly_token[0,20],
    token: credentials.token,
    refresh_token: credentials.refresh_token)
 end
    @calendar = user.get_google_calendars
    user
  end

end

class Event < ApplicationRecord
  belongs_to: :calendar #calendar belogns to user, a calendar can have many events


end


class Calendar < ApplicationRecord
  has_many: :events, dependent: :destroy #calendar belogns to user, a calendar can have many events
  belongs_to: :user, dependent: :destroy

  def get_google_calendars
    url = "https://www.googleapis.com/calendar/v3/users/me/calendarList?access_token=#{token}"
    response = open(url)
    json = JSON.parse(response.read)
    calendars = json["items"]
    calendars.each { |cal| get_events_for_calendar(cal) }
  end

  def get_events_for_calendar(cal)

    url = "https://www.googleapis.com/calendar/v3/calendars/#{cal["id"]}/events?access_token=#{token}"
    response = open(url)
    json = JSON.parse(response.read)
    my_events = json["items"]

    my_events.each do |event|
      name = event["summary"] || "no name"
      creator = event["creator"] ? event["creator"]["email"] : nil
      start = event["start"] ? event["start"]["dateTime"] : nil
      status = event["status"] || nil
      link = event["htmlLink"] || nil
      calendar = cal["summary"] || nil

      events.create(name: name,
        creator: creator,
        status: status,
        start: start,
        link: link,
        calendar: calendar
        )
    end
  end
end