module JamRuby
  # UserMailer must be configured to work
  # Some common configs occur in jam_ruby/init.rb
  # Environment specific configs occur in spec_helper.rb in jam-ruby and jam-web (to put it into test mode),
  # and in config/initializers/email.rb in rails to configure sendmail account settings
  # If UserMailer were to be used in another project, it would need to be configured there, as well.

  # Templates for UserMailer can be found in jam_ruby/app/views/jam_ruby/user_mailer
  class UserMailer < ActionMailer::Base
    include SendGrid

    layout "user_mailer"

    DEFAULT_SENDER = "JamKazam <noreply@jamkazam.com>"

    default :from => DEFAULT_SENDER

    sendgrid_category :use_subject_lines
    #sendgrid_enable   :opentrack, :clicktrack  # this makes our emails creepy, imo (seth)
    sendgrid_unique_args :env => Environment.mode

    def confirm_email(user, signup_confirm_url)
      @user = user
      @signup_confirm_url = signup_confirm_url
      sendgrid_category "Confirm Email"
      sendgrid_unique_args :type => "confirm_email"

      sendgrid_recipients([user.email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => user.email, :subject => "Please confirm your JamKazam email") do |format|
        format.text
        format.html
      end
    end

    def welcome_message(user)
      @user = user
      sendgrid_category "Welcome"
      sendgrid_unique_args :type => "welcome_message"

      sendgrid_recipients([user.email])
      sendgrid_substitute('@USERID', [user.id])
      sendgrid_substitute(EmailBatchProgression::VAR_FIRST_NAME, [user.first_name])

      mail(:to => user.email, :subject => "Welcome to JamKazam") do |format|
        format.text
        format.html
      end
    end

    def student_welcome_message(user)
      @user = user
      @subject = "Welcome to JamKazam and JamClass online lessons!"
      sendgrid_category "Welcome"
      sendgrid_unique_args :type => "welcome_message"

      sendgrid_recipients([user.email])
      sendgrid_substitute('@USERID', [user.id])
      sendgrid_substitute(EmailBatchProgression::VAR_FIRST_NAME, [user.first_name])

      mail(:to => user.email, :subject => @subject) do |format|
        format.text
        format.html
      end
    end

    def teacher_welcome_message(user)
      @user = user
      @subject= "Welcome to JamKazam and JamClass online lessons!"
      sendgrid_category "Welcome"
      sendgrid_unique_args :type => "welcome_message"

      sendgrid_recipients([user.email])
      sendgrid_substitute('@USERID', [user.id])
      sendgrid_substitute(EmailBatchProgression::VAR_FIRST_NAME, [user.first_name])

      mail(:to => user.email, :subject => @subject) do |format|
        format.text
        format.html
      end
    end

    def school_owner_welcome_message(user)
      @user = user
      @subject= "Welcome to JamKazam and JamClass online lessons!"
      sendgrid_category "Welcome"
      sendgrid_unique_args :type => "welcome_message"

      sendgrid_recipients([user.email])
      sendgrid_substitute('@USERID', [user.id])
      sendgrid_substitute(EmailBatchProgression::VAR_FIRST_NAME, [user.first_name])

      mail(:to => user.email, :subject => @subject) do |format|
        format.text
        format.html
      end
    end

    def password_changed(user)
      @user = user

      sendgrid_recipients([user.email])
      sendgrid_substitute('@USERID', [user.id])

      sendgrid_unique_args :type => "password_changed"
      mail(:to => user.email, :subject => "JamKazam Password Changed") do |format|
        format.text
        format.html
      end
    end

    def password_reset(user, password_reset_url)
      @user = user

      sendgrid_recipients([user.email])
      sendgrid_substitute('@USERID', [user.id])

      @password_reset_url = password_reset_url
      sendgrid_unique_args :type => "password_reset"
      mail(:to => user.email, :subject => "JamKazam Password Reset") do |format|
        format.text
        format.html
      end
    end

    def updating_email(user)
      @user = user

      sendgrid_recipients([user.email])
      sendgrid_substitute('@USERID', [user.id])

      sendgrid_unique_args :type => "updating_email"
      mail(:to => user.update_email, :subject => "JamKazam Email Change Confirmation") do |format|
        format.text
        format.html
      end
    end

    def updated_email(user)
      @user = user

      sendgrid_recipients([user.email])
      sendgrid_substitute('@USERID', [user.id])

      sendgrid_unique_args :type => "updated_email"
      mail(:to => user.email, :subject => "JamKazam Email Changed") do |format|
        format.text
        format.html
      end
    end

    def new_musicians(user, new_musicians, host='www.jamkazam.com')
      @user, @new_musicians, @host = user, new_musicians, host
      sendgrid_recipients([user.email])
      sendgrid_substitute('@USERID', [user.id])
      sendgrid_unique_args :type => "new_musicians"

      mail(:to => user.email, :subject => EmailBatchNewMusician.subject) do |format|
        format.text
        format.html
      end
    end

    #################################### NOTIFICATION EMAILS ####################################
    def friend_request(user, msg, friend_request_id)
      return if !user.subscribe_email

      email = user.email
      subject = "You have a new friend request on JamKazam"
      unique_args = {:type => "friend_request"}

      @url = Nav.accept_friend_request_dialog(friend_request_id)
      @body = msg
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def friend_request_accepted(user, msg)
      return if !user.subscribe_email

      email = user.email
      subject = "You have a new friend on JamKazam"
      unique_args = {:type => "friend_request_accepted"}

      @body = msg
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def new_user_follower(user, msg)
      return if !user.subscribe_email

      email = user.email
      subject = "You have a new follower on JamKazam"
      unique_args = {:type => "new_user_follower"}

      @body = msg
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def new_band_follower(user, msg)
      return if !user.subscribe_email

      email = user.email
      subject = "Your band has a new follower on JamKazam"
      unique_args = {:type => "new_band_follower"}

      @body = msg
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def session_invitation(user, msg)
      return if !user.subscribe_email

      email = user.email
      subject = "You have been invited to a session on JamKazam"
      unique_args = {:type => "session_invitation"}

      @body = msg
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def musician_session_join(user, msg, session_id)
      return if !user.subscribe_email

      email = user.email
      subject = "Someone you know is in a session on JamKazam"
      unique_args = {:type => "musician_session_join"}
      @body = msg
      @session_url = "#{APP_CONFIG.external_root_url}/sessions/#{session_id}"
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def scheduled_session_invitation(user, msg, session)
      return if !user.subscribe_email

      email = user.email
      subject = "Session Invitation"
      unique_args = {:type => "scheduled_session_invitation"}
      @body = msg
      @session_name = session.name
      @session_date = session.pretty_scheduled_start(true)
      @session_url = "#{APP_CONFIG.external_root_url}/sessions/#{session.id}/details"
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def scheduled_session_rsvp(user, msg, session)
      return if !user.subscribe_email

      email = user.email
      subject = "Session RSVP"
      unique_args = {:type => "scheduled_session_rsvp"}
      @body = msg
      @session_name = session.name
      @session_date = session.pretty_scheduled_start(true)
      @session_url = "#{APP_CONFIG.external_root_url}/sessions/#{session.id}/details"
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def scheduled_session_rsvp_approved(user, msg, session)
      return if !user.subscribe_email

      email = user.email
      subject = "Session RSVP Approved"
      unique_args = {:type => "scheduled_session_rsvp_approved"}
      @body = msg
      @session_name = session.name
      @session_date = session.pretty_scheduled_start(true)
      @session_url = "#{APP_CONFIG.external_root_url}/sessions/#{session.id}/details"
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def scheduled_session_rsvp_cancelled(user, msg, session)
      return if !user.subscribe_email

      email = user.email
      subject = "Session RSVP Cancelled"
      unique_args = {:type => "scheduled_session_rsvp_cancelled"}
      @body = msg
      @session_name = session.name
      @session_date = session.pretty_scheduled_start(true)
      @session_url = "#{APP_CONFIG.external_root_url}/sessions/#{session.id}/details"
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def scheduled_session_rsvp_cancelled_org(user, msg, session)
      return if !user.subscribe_email

      email = user.email
      subject = "Your Session RSVP Cancelled"
      unique_args = {:type => "scheduled_session_rsvp_cancelled_org"}
      @body = msg
      @session_name = session.name
      @session_date = session.pretty_scheduled_start(true)
      @session_url = "#{APP_CONFIG.external_root_url}/sessions/#{session.id}/details"
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def scheduled_session_cancelled(user, msg, session)
      return if !user.subscribe_email

      email = user.email
      subject = "Session Cancelled"
      unique_args = {:type => "scheduled_session_cancelled"}
      @body = msg
      @session_name = session.name
      @session_date = session.pretty_scheduled_start(true)
      @session_url = "#{APP_CONFIG.external_root_url}/sessions/#{session.id}/details"
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def scheduled_session_rescheduled(user, msg, session)
      return if !user.subscribe_email

      email = user.email
      subject = "Session Rescheduled"
      unique_args = {:type => "scheduled_session_rescheduled"}
      @body = msg
      @session_name = session.name
      @session_date = session.pretty_scheduled_start(true)
      @session_url = "#{APP_CONFIG.external_root_url}/sessions/#{session.id}/details"
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def scheduled_session_reminder_upcoming(user, session)
      subject = "Your JamKazam session starts in 1 hour!"
      unique_args = {:type => "scheduled_session_reminder_upcoming"}
      send_scheduled_session_reminder(user, session, subject, unique_args)
    end

    def scheduled_session_reminder_day(user, session)
      subject = "JamKazam Session Reminder"
      unique_args = {:type => "scheduled_session_reminder_day"}
      send_scheduled_session_reminder(user, session, subject, unique_args)
    end

    def send_scheduled_session_reminder(user, session, subject, unique_args)
      return if !user.subscribe_email

      email = user.email
      @user = user
      @session_name = session.name
      @session_date = session.pretty_scheduled_start(true)
      @session_url = "#{APP_CONFIG.external_root_url}/sessions/#{session.id}/details"
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def scheduled_session_comment(target_user, sender, msg, comment, session)
      return if !target_user.subscribe_email

      email = target_user.email
      subject = "New Session Comment"
      unique_args = {:type => "scheduled_session_comment"}
      @body = msg
      @session_name = session.name
      @session_date = session.pretty_scheduled_start(true)
      @comment = comment
      @sender = sender
      @suppress_user_has_account_footer = true
      @session_url = "#{APP_CONFIG.external_root_url}/sessions/#{session.id}/details"
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [target_user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def scheduled_session_daily(receiver, sessions_and_latency)
      sendgrid_category "Notification"
      sendgrid_unique_args :type => "scheduled_session_daily"

      sendgrid_recipients([receiver.email])
      sendgrid_substitute('@USERID', [receiver.id])

      @user = receiver
      @sessions_and_latency = sessions_and_latency

      @title = 'New Scheduled Sessions Matched to You'
      mail(:to => receiver.email,
           :subject => EmailBatchScheduledSessions.subject) do |format|
        format.text
        format.html
      end
    end

    def band_session_join(user, msg, session_id)
      return if !user.subscribe_email

      email = user.email
      subject = "A band that you follow has joined a session"
      unique_args = {:type => "band_session_join"}

      @body = msg
      @session_url = "#{APP_CONFIG.external_root_url}/sessions/#{session_id}"
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def musician_recording_saved(user, msg)
      return if !user.subscribe_email

      email = user.email
      subject = "A musician has saved a new recording on JamKazam"
      unique_args = {:type => "musician_recording_saved"}

      @body = msg
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def band_recording_saved(user, msg)
      return if !user.subscribe_email

      email = user.email
      subject = "A band has saved a new recording on JamKazam"
      unique_args = {:type => "band_recording_saved"}

      @body = msg
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def band_invitation(user, msg)
      return if !user.subscribe_email

      email = user.email
      subject = "You have been invited to join a band on JamKazam"
      unique_args = {:type => "band_invitation"}

      @body = msg
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end

    def band_invitation_accepted(user, msg)
      return if !user.subscribe_email

      email = user.email
      subject = "Your band invitation was accepted"
      unique_args = {:type => "band_invitation_accepted"}

      @body = msg
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html
      end
    end


    def text_message(user, sender_id, sender_name, sender_photo_url, message)
      return if !user.subscribe_email

      email = user.email
      subject = "Message from #{sender_name}"
      unique_args = {:type => "text_message"}

      @note = message
      @url = Nav.home(dialog: 'text-message', dialog_opts: {d1: sender_id})
      @sender_id = sender_id
      @sender_name = sender_name
      @sender_photo_url = sender_photo_url
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def student_lesson_request(lesson_booking)
      email = lesson_booking.user.email
      subject = "You have sent a lesson request to #{lesson_booking.teacher.name}!"
      unique_args = {:type => "student_lesson_request"}

      @sender = lesson_booking.teacher
      @lesson_booking = lesson_booking

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [lesson_booking.user.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_lesson_request(lesson_booking)
      email = lesson_booking.teacher.email
      subject = "You have received a lesson request through JamKazam!"
      unique_args = {:type => "teacher_lesson_request"}

      @sender = lesson_booking.user
      @lesson_booking = lesson_booking

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [lesson_booking.teacher.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def student_lesson_accepted(lesson_session, message, slot)
      @slot = slot
      if slot.is_teacher_approved?
        @target = lesson_session.student
        @sender = lesson_session.teacher
        @subject = "Your lesson request is confirmed!"
      else
        @target = lesson_session.teacher
        @sender = lesson_session.student
        @subject = "Your have confirmed a lesson!"
      end
      @lesson_session = lesson_session
      @message = message
      email = lesson_session.student.email
      unique_args = {:type => "student_lesson_accepted"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [lesson_session.student.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_lesson_accepted(lesson_session, message, slot)
      @slot = slot
      if slot.is_teacher_approved?
        @target = lesson_session.student
        @sender = lesson_session.teacher
        @subject = "You have confirmed a lesson!"
      else
        @target = lesson_session.teacher
        @sender = lesson_session.student
        @subject = "Your lesson time change is confirmed by #{lesson_session.student.name}!"
      end

      @lesson_session = lesson_session
      @message = message
      email = lesson_session.teacher.email
      unique_args = {:type => "teacher_lesson_accepted"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [lesson_session.teacher.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def student_lesson_update_all(lesson_session, message, slot)
      @slot = slot
      if slot.is_teacher_created?
        @target = lesson_session.teacher
        @sender = lesson_session.student
        subject = "All lesson times changed with #{lesson_session.teacher.name}!"
      else
        @target = lesson_session.student
        @sender = lesson_session.teacher
        subject = "All lesson times changed with #{lesson_session.teacher.name}!"
      end
      @lesson_session = lesson_session
      @message = message
      email = lesson_session.student.email
      unique_args = {:type => "student_lesson_accepted"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [lesson_session.student.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_lesson_update_all(lesson_session, message, slot)
      @slot = slot
      if slot.is_teacher_created?
        @target = lesson_session.teacher
        @sender = lesson_session.student
        subject = "All lesson times changed with #{lesson_session.student.name}!"
      else
        @target = lesson_session.student
        @sender = lesson_session.teacher
        subject = "All lesson times changed with #{lesson_session.student.name}!"
      end

      @lesson_session = lesson_session
      @message = message
      email = lesson_session.teacher.email
      unique_args = {:type => "teacher_lesson_update_all"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [lesson_session.teacher.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_scheduled_jamclass_invitation(user, msg, session)

      email = user.email
      @subject = "#{session.lesson_session.lesson_booking.display_type2.capitalize} JamClass Scheduled with #{session.lesson_session.student.name}"
      unique_args = {:type => "scheduled_jamclass_invitation"}
      @student = session.lesson_session.student
      @teacher = session.lesson_session.teacher
      @body = msg
      @session_name = session.name
      @session_description = session.description
      @session_date = session.pretty_scheduled_start(true)
      @session_url = session.lesson_session.web_url
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html
      end
    end

    def student_scheduled_jamclass_invitation(user, msg, session)
      return if !user.subscribe_email

      email = user.email
      @subject = "#{session.lesson_session.lesson_booking.display_type2.capitalize} JamClass Scheduled with #{session.lesson_session.teacher.name}"
      unique_args = {:type => "scheduled_jamclass_invitation"}
      @student = session.lesson_session.student
      @teacher = session.lesson_session.teacher
      @body = msg
      @session_name = session.name
      @session_description = session.description
      @session_date = session.pretty_scheduled_start(true)
      @session_url = session.lesson_session.web_url
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [user.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html
      end
    end

    # teacher proposed counter time; so send msg to the student
    def student_lesson_counter(lesson_session, slot)

      email = lesson_session.student.email
      subject = "Instructor has proposed a different time for your lesson"
      unique_args = {:type => "student_lesson_counter"}
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    # student proposed counter time; so send msg to the teacher
    def teacher_lesson_counter(lesson_session, slot)

      email = lesson_session.teacher.email
      subject = "Student has proposed a different time for their lesson"
      unique_args = {:type => "teacher_lesson_counter"}
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session
      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@teacher.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_lesson_completed(lesson_session)
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session
      email = lesson_session.teacher.email
      if @lesson_session.student_missed
        subject = "You will be paid for your lesson with #{@student.name}"
      else
        subject = "You successfully completed a lesson with #{@student.name}"
      end


      unique_args = {:type => "teacher_lesson_completed"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@teacher.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    # successfully completed, and has some remaining test drives
    def student_test_drive_lesson_completed(lesson_session)

      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session

      email = @student.email
      subject = "You have used #{@student.used_test_drives} of #{@student.total_test_drives} TestDrive lesson credits"
      unique_args = {:type => "student_test_drive_success"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_test_drive_no_bill(lesson_session)
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session

      email = @teacher.email
      subject = "Your TestDrive with #{@student.name} was not successful"
      unique_args = {:type => "teacher_test_drive_no_bill"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@teacher.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def student_test_drive_no_bill(lesson_session)
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session

      email = @student.email
      subject = "Your TestDrive with #{@teacher.name} will not use a credit"
      unique_args = {:type => "student_test_drive_no_bill"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    # successfully completed, but no more test drives left
    def student_test_drive_lesson_done(lesson_session)

      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session

      email = @student.email
      subject = "You have used all TestDrive lesson credits"
      unique_args = {:type => "student_test_drive_success"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "raw_mailer" }
      end
    end

    def student_lesson_normal_no_bill(lesson_session)
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session

      email = @student.email
      subject = "Your lesson with #{@teacher.name} will not be billed"
      unique_args = {:type => "student_lesson_normal_no_bill"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_lesson_normal_no_bill(lesson_session)
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session
      email = lesson_session.teacher.email
      subject = "Your student #{@student.name} will not be charged for their lesson"
      unique_args = {:type => "teacher_lesson_normal_no_bill"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@teacher.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def student_lesson_normal_done(lesson_session)
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session

      email = @student.email
      subject = "Your JamClass lesson today with #{@teacher.first_name}"
      unique_args = {:type => "student_lesson_normal_done"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_lesson_normal_done(lesson_session)
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session
      email = lesson_session.teacher.email
      subject = "Your JamClass lesson today with #{@student.first_name}"
      unique_args = {:type => "teacher_lesson_normal_done"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@teacher.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def student_unable_charge(lesson_session)
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session
      @card_declined = lesson_session.is_card_declined?
      @card_expired = lesson_session.is_card_expired?
      @bill_date = lesson_session.last_billed_at_date

      email = @student.email
      subject = "The credit card charge for your lesson today with #{@teacher.name} failed"
      unique_args = {:type => "student_unable_charge"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_unable_charge(lesson_session)
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session
      email = lesson_session.teacher.email
      subject = "The credit card charge for your lesson today with #{@teacher.name} failed"
      unique_args = {:type => "teacher_lesson_normal_done"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@teacher.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def student_unable_charge_monthly(lesson_package_purchase)
      lesson_booking = lesson_package_purchase.lesson_booking
      @student = lesson_booking.student
      @teacher = lesson_booking.teacher
      @lesson_package_purchase = lesson_package_purchase
      @card_declined = lesson_package_purchase.is_card_declined?
      @card_expired = lesson_package_purchase.is_card_expired?
      @bill_date = lesson_package_purchase.last_billed_at_date
      @lesson_booking = lesson_booking
      @month_name = lesson_package_purchase.month_name
      email = @student.email
      if lesson_booking.is_suspended?
        @subject = "Your weekly lessons with #{@teacher.name} have been suspended."
      else
        @subject = "The credit card charge for your #{@month_name} lessons with #{@teacher.name} failed."
      end


      unique_args = {:type => "student_unable_charge_monthly"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_unable_charge_monthly(lesson_package_purchase)
      lesson_booking = lesson_package_purchase.lesson_booking
      @student = lesson_booking.student
      @teacher = lesson_booking.teacher
      @lesson_package_purchase = lesson_package_purchase
      @card_declined = lesson_package_purchase.is_card_declined?
      @card_expired = lesson_package_purchase.is_card_expired?
      @bill_date = lesson_package_purchase.last_billed_at_date
      @lesson_booking = lesson_booking
      @month_name = lesson_package_purchase.month_name

      email = @teacher.email
      if lesson_booking.is_suspended?
        @subject = "Your weekly lessons with #{@student.name} has been suspended."
      else
        @subject = "The student #{@student.name} had a failed credit card charge for #{@month_name}."
      end


      unique_args = {:type => "teacher_unable_charge_monthly"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@teacher.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def student_lesson_monthly_charged(lesson_package_purchase)
      lesson_booking = lesson_package_purchase.lesson_booking
      @student = lesson_booking.student
      @teacher = lesson_booking.teacher
      @lesson_package_purchase = lesson_package_purchase
      @card_declined = lesson_package_purchase.is_card_declined?
      @card_expired = lesson_package_purchase.is_card_expired?
      @bill_date = lesson_package_purchase.last_billed_at_date
      @lesson_booking = lesson_booking
      @month_name = lesson_package_purchase.month_name
      email = @student.email
      @subject = "Your JamClass lessons with #{@teacher.first_name} for #{@month_name}"

      unique_args = {:type => "student_lesson_monthly_charged"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_lesson_monthly_charged(lesson_package_purchase)
      lesson_booking = lesson_package_purchase.lesson_booking
      @student = lesson_booking.student
      @teacher = lesson_booking.teacher
      @lesson_package_purchase = lesson_package_purchase
      @card_declined = lesson_package_purchase.is_card_declined?
      @card_expired = lesson_package_purchase.is_card_expired?
      @bill_date = lesson_package_purchase.last_billed_at_date
      @lesson_booking = lesson_booking
      @month_name = lesson_package_purchase.month_name

      email = @teacher.email
      if lesson_booking.is_suspended?
        @subject = "Your weekly lessons with #{@student.name} has been suspended."
      else
        @subject = "The student #{@student.name} had a failed credit card charge for #{@month_name}."
      end


      unique_args = {:type => "student_lesson_monthly_charged"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@teacher.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    # always goes to the teacher
    def teacher_distribution_done(teacher_payment)
      @school = teacher_payment.school
      @teacher_payment = teacher_payment
      @distribution = teacher_payment.teacher_distribution
      @teacher = teacher_payment.teacher
      @payable_teacher = teacher_payment.payable_teacher
      @name = @teacher.first_name || 'Anonymous'
      @student = @distribution.student
      email = @teacher.email

      if @school
        if @distribution.is_test_drive?
          @subject = "Your TestDrive lesson with #{@student.name}"
        elsif @distribution.is_normal?
          @subject = "Your lesson with #{@student.name}"
        elsif @distribution.is_monthly?
          @subject = "Your #{@distribution.month_name} lessons with #{@student.name}"
        else
          @subject = "Your lesson with #{@student.name}"
        end
      else
        if @distribution.is_test_drive?
          @subject = "You have earned #{@distribution.real_distribution_display} for your TestDrive lesson with #{@student.first_name}"
        elsif @distribution.is_normal?
          @subject = "You have earned #{@distribution.real_distribution_display} for your lesson with #{@student.first_name}"
        elsif @distribution.is_monthly?
          @subject = "You have earned #{@distribution.real_distribution_display} for your #{@distribution.month_name} lessons with #{@student.first_name}"
        else
          @subject = "You have earned #{@distribution.real_distribution_display} for your lesson with #{@student.first_name}"
        end
      end

      unique_args = {:type => "teacher_distribution_done"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@teacher.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html
      end
    end

    # if school, goes to school owner; otherwise goes to teacher
    def teacher_distribution_fail(teacher_payment)
      @school = teacher_payment.school
      @teacher_payment = teacher_payment
      @distribution = teacher_payment.teacher_distribution
      @teacher = teacher_payment.teacher
      @payable_teacher = teacher_payment.payable_teacher
      @student = @distribution.student
      @name = @payable_teacher.first_name || 'Anonymous'
      email = @payable_teacher.email

      @card_declined = teacher_payment.is_card_declined?
      @card_expired = teacher_payment.is_card_expired?
      @bill_date = teacher_payment.last_billed_at_date


      if @school
        if @distribution.is_test_drive?
          @subject = "We had a problem paying #{@distribution.real_distribution_display} for #{@teacher.name}'s TestDrive lesson with #{@student.name}"
        elsif @distribution.is_normal?
          @subject = "We had a problem paying #{@distribution.real_distribution_display} for #{@teacher.name}'s lesson with #{@student.name}"
        elsif @distribution.is_monthly?
          @subject = "We had a problem paying #{@distribution.real_distribution_display} for #{@teacher.name}'s #{@distribution.month_name} lessons with #{@student.name}"
        else
          @subject = "We had a problem paying #{@distribution.real_distribution_display} for #{@teacher.name}'s lesson with #{@student.name}"
        end
      else
        if @distribution.is_test_drive?
          @subject = "We had a problem paying you #{@distribution.real_distribution_display} for your TestDrive lesson with #{@student.first_name}"
        elsif @distribution.is_normal?
          @subject = "We had a problem paying you #{@distribution.real_distribution_display} for your lesson with #{@student.first_name}"
        elsif @distribution.is_monthly?
          @subject = "We had a problem paying you #{@distribution.real_distribution_display} for your #{@distribution.month_name} lessons with #{@student.first_name}"
        else
          @subject = "We had a problem paying you #{@distribution.real_distribution_display} for your lesson with #{@student.first_name}"
        end
      end

      unique_args = {:type => "teacher_distribution_fail"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@payable_teacher.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html
      end
    end

    # always goes to the school owner
    def school_distribution_done(teacher_payment)
      @school = teacher_payment.school
      @teacher_payment = teacher_payment
      @distribution = teacher_payment.teacher_distribution
      @teacher = teacher_payment.teacher
      @payable_teacher = @school.owner
      @name = @payable_teacher.first_name || 'Anonymous'
      @student = @distribution.student
      email = @payable_teacher.email

      if @distribution.is_test_drive?
        @subject = "#{@teacher.name} has earned #{@distribution.real_distribution_display} for TestDrive lesson with #{@student.name}"
      elsif @distribution.is_normal?
        @subject = "#{@teacher.name} has earned #{@distribution.real_distribution_display} for a lesson with #{@student.name}"
      elsif @distribution.is_monthly?
        @subject = "#{@teacher.name} has earned #{@distribution.real_distribution_display} for #{@distribution.month_name} lessons with #{@student.name}"
      else
        @subject = "#{@teacher.name} has earned #{@distribution.real_distribution_display} for a lesson with #{@student.name}"
      end

      unique_args = {:type => "school_distribution_done"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@payable_teacher.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html
      end
    end


    def monthly_recurring_done(lesson_session)
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session

      email = @student.email
      subject = "Your JamClass lesson today with #{@teacher.first_name}"
      unique_args = {:type => "student_lesson_normal_no_bill"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def monthly_recurring_no_bill(lesson_session)
      @student = lesson_session.student
      @teacher = lesson_session.teacher
      @session_name = lesson_session.music_session.name
      @session_description = lesson_session.music_session.description
      @session_date = lesson_session.slot.pretty_scheduled_start(true)
      @session_url = lesson_session.web_url
      @lesson_session = lesson_session

      email = @student.email
      subject = "Your lesson with #{@teacher.name} will not be billed"
      unique_args = {:type => "student_lesson_normal_done"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]

      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def student_lesson_booking_declined(lesson_booking, message)
      @lesson_booking = lesson_booking
      @student = lesson_booking.student
      @teacher = lesson_booking.teacher
      @message = message
      @lesson_session = lesson_booking.next_lesson
      @session_name = @lesson_session.music_session.name
      @session_description = @lesson_session.music_session.description
      @session_date = @lesson_session.slot.pretty_scheduled_start(true)
      email = @student.email
      @subject = "We're sorry your lesson request has been declined"
      unique_args = {:type => "student_lesson_booking_declined"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]
      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def student_lesson_booking_canceled(lesson_booking, message)
      @lesson_booking = lesson_booking
      @student = lesson_booking.student
      @teacher = lesson_booking.teacher
      @message = message
      @lesson_session = lesson_booking.next_lesson
      @session_name = @lesson_session.music_session.name
      @session_description = @lesson_session.music_session.description
      @session_date = @lesson_session.slot.pretty_scheduled_start(true)
      email = @student.email
      @subject = "Your lesson has been canceled"
      unique_args = {:type => "student_lesson_booking_canceled"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]
      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_lesson_booking_canceled(lesson_booking, message)
      @lesson_booking = lesson_booking
      @student = lesson_booking.student
      @teacher = lesson_booking.teacher
      @message = message
      @lesson_session = lesson_booking.next_lesson
      @session_name = @lesson_session.music_session.name
      @session_description = @lesson_session.music_session.description
      @session_date = @lesson_session.slot.pretty_scheduled_start(true)

      email = @teacher.email
      @subject = "Your lesson has been canceled"
      unique_args = {:type => "teacher_lesson_booking_canceled"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]
      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@teacher.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def student_lesson_canceled(lesson_session, message)
      @lesson_booking = lesson_booking = lesson_session.lesson_booking
      @student = lesson_booking.student
      @teacher = lesson_booking.teacher
      @message = message
      @lesson_session = lesson_booking.next_lesson
      @session_name = @lesson_session.music_session.name
      @session_description = @lesson_session.music_session.description
      @session_date = @lesson_session.slot.pretty_scheduled_start(true)
      email = @student.email
      @subject = "Your lesson has been canceled"
      unique_args = {:type => "student_lesson_canceled"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]
      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def teacher_lesson_canceled(lesson_session, message)
      @lesson_booking = lesson_booking = lesson_session.lesson_booking
      @student = lesson_booking.student
      @teacher = lesson_booking.teacher
      @message = message
      @lesson_session = lesson_booking.next_lesson
      @session_name = @lesson_session.music_session.name
      @session_description = @lesson_session.music_session.description
      @session_date = @lesson_session.slot.pretty_scheduled_start(true)

      email = @teacher.email
      @subject = "Your lesson has been canceled"
      unique_args = {:type => "teacher_lesson_canceled"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]
      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@teacher.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def invite_school_teacher(school_invitation)
      @school_invitation = school_invitation
      @school = school_invitation.school

      email = school_invitation.email
      @subject = "#{@school.owner.name} has sent you an invitation to join #{@school.name} on JamKazam"
      unique_args = {:type => "invite_school_teacher"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]
      sendgrid_recipients([email])

      @suppress_user_has_account_footer = true

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html
      end
    end

    def invite_school_student(school_invitation)
      @school_invitation = school_invitation
      @school = school_invitation.school

      email = school_invitation.email
      @subject = "#{@school.name} has sent you an invitation to join JamKazam for lessons"
      unique_args = {:type => "invite_school_student"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]
      sendgrid_recipients([email])

      @suppress_user_has_account_footer = true

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html
      end
    end

    def lesson_chat(chat_msg)
      @target = chat_msg.target_user
      @sender = chat_msg.user
      @message = chat_msg.message
      @lesson_session = chat_msg.lesson_session
      @session_name = @lesson_session.music_session.name
      @session_description = @lesson_session.music_session.description
      @session_date = @lesson_session.slot.pretty_scheduled_start(true)

      email = @target.email
      @subject = "#{@sender.name} has sent you a message about a lesson"
      unique_args = {:type => "lesson_chat"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]
      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@target.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def lesson_starting_soon_teacher(lesson_session)
      @lesson_booking = lesson_booking = lesson_session.lesson_booking
      @student = lesson_booking.student
      @teacher = lesson_booking.teacher
      @lesson_session = lesson_booking.next_lesson
      @session_name = @lesson_session.music_session.name
      @session_description = @lesson_session.music_session.description
      @session_date = @lesson_session.slot.pretty_scheduled_start(true)

      email = @teacher.email
      @subject = "Your lesson with #{@student.first_name} on JamKazam is starting soon"
      unique_args = {:type => "send_starting_notice_teacher"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]
      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@teacher.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end

    def lesson_starting_soon_student(lesson_session)
      @lesson_booking = lesson_booking = lesson_session.lesson_booking
      @student = lesson_booking.student
      @teacher = lesson_booking.teacher
      @message = message
      @lesson_session = lesson_booking.next_lesson
      @session_name = @lesson_session.music_session.name
      @session_description = @lesson_session.music_session.description
      @session_date = @lesson_session.slot.pretty_scheduled_start(true)

      email = @student.email
      @subject = "Your lesson with #{@teacher.first_name} on JamKazam is starting soon"
      unique_args = {:type => "send_starting_notice_student"}

      sendgrid_category "Notification"
      sendgrid_unique_args :type => unique_args[:type]
      sendgrid_recipients([email])
      sendgrid_substitute('@USERID', [@student.id])

      mail(:to => email, :subject => @subject) do |format|
        format.text
        format.html { render :layout => "from_user_mailer" }
      end
    end
  end
end