class User < ActiveRecord::Base
	rolify
	# Include default devise modules. Others available are:
	# :token_authenticatable, :confirmable,
	# :lockable, :timeoutable and :omniauthable
	devise :invitable, :database_authenticatable, :registerable, :recoverable, :rememberable, 
         :trackable, :validatable, :confirmable, :omniauthable, :omniauth_providers => [:shibboleth]

    #associations between tables
    belongs_to :user_type
    belongs_to :user_status
    has_many :answers
    has_many :user_org_roles
    has_many :project_groups, :dependent => :destroy
    has_many :organisations , through: :user_org_roles
    has_many :user_role_types, through: :user_org_roles
		has_many :token_permissions



    has_many :projects, through: :project_groups do
      def filter(query)
        return self unless query.present?

        t = self.arel_table
        q = "%#{query}%"

        conditions = t[:title].matches(q)

        columns = %i(
          grant_number identifier description principal_investigator data_contact
        )
        columns = ['grant_number', 'identifier', 'description', 'principal_investigator', 'data_contact']

        columns.each {|col| conditions = conditions.or(t[col].matches(q)) }

        self.where(conditions)
      end
    end

    # Commented out due to warning in Rails 4. This line is redundant due to use of the rolify gem
    #has_and_belongs_to_many :roles, :join_table => :users_roles
    
    has_many :plan_sections

    accepts_nested_attributes_for :roles
    
    attr_accessible :password_confirmation, :encrypted_password, :remember_me, :id, :email, 
                    :firstname, :last_login,:login_count, :orcid_id, :password, :shibboleth_id, 
                    :user_status_id, :surname, :user_type_id, :organisation_id, :skip_invitation, 
                    :other_organisation, :accept_terms, :role_ids, :dmponline3, :api_token

    # FIXME: The duplication in the block is to set defaults. It might be better if
    #        they could be set in Settings::PlanList itself, if possible.
    has_settings :plan_list, class_name: 'Settings::PlanList' do |s|
      s.key :plan_list, defaults: { columns: Settings::PlanList::DEFAULT_COLUMNS }
    end

	def name(use_email = true)
		if ((firstname.nil? && surname.nil?) || (firstname.strip == "" && surname.strip == "")) && use_email then
			return email
		else
			name = "#{firstname} #{surname}"
			return name.strip
		end
	end

	def organisation_id=(new_organisation_id)
        # if the user is not part of the new organisation
        if !self.user_org_roles.pluck(:organisation_id).include?(new_organisation_id.to_i) then
            # if the user has more than one role
      		if self.user_org_roles.count != 1 then
      			new_user_org_role = UserOrgRole.new
      			new_user_org_role.organisation_id = new_organisation_id
      			new_user_org_role.user_role_type = UserRoleType.find_by_name("user");
      			self.user_org_roles << new_user_org_role
                #
            # if the user has roles other than one(0/2/3?)
      		else
                # set role to first role
      			user_org_role = self.user_org_roles.first
                # change org_id to new org_id
      			user_org_role.organisation_id = new_organisation_id
                # save modified role
                user_org_role.save
                # if user has an "org_admin" role
      			org_admin_role = roles.find_by_name("org_admin")
      			unless org_admin_role.nil? then
                    # delete it
      				roles.delete(org_admin_role)
      			end
      		end
        end
        # rip api_token from user
        self.api_token = ""
	end

	def organisation_id
		if self.organisations.count > 0 then
			return self.organisations.first.id
		else
			return nil
		end
	end

	def organisation
		if self.organisations.count > 0 then
			return self.organisations.first
		else
			return nil
		end
	end

	def current_organisation
		if self.organisations.count > 0 then
			return self.organisations.last
		else
			return nil
		end
	end

	def organisation=(new_organisation)
		organisation_id = organisation.id
	end

	def is_admin?
		admin = roles.find_by_name("admin")
		return !admin.nil?
	end

	def is_org_admin?
		org_admin = roles.find_by_name("org_admin")
		return !org_admin.nil?
	end

    def org_type
        org_type = organisation.organisation_type.name
		return org_type
    end

    def remove_token!
        unless api_token.empty?
            self.api_token = ""
            self.save!
        end
    end

    def keep_or_generate_token!
        if api_token.empty?
            self.api_token = loop do
                random_token = SecureRandom.urlsafe_base64(nil, false)
                break random_token unless User.exists?(api_token: random_token)
            end
            self.save!
            # send an email to the user to notify them of their new api token
            UserMailer.api_token_granted_notification(self)
        end
    end

end