YaleSTC/shifts

class SubRequestsController < ApplicationController
  layout 'shifts'

  def index
    if params[:shift_id]      # check if index listing is shift specific
      @shift=Shift.find(params[:shift_id])
      @subs=@shift.sub_requests
      @title_add=" for " + @shift.user.name + "'s shift in " + @shift.location.name + " on " + @shift.start.to_s(:gg)
      @index_link = true
    elsif params[:include_past] #all sub requests ever (slow)
      if params[:include_past] == "1"
        @subs = SubRequest.all.sort_by{|s| s.start}.reverse
        @title_add=" Index"
        @index_link=false
      else #all future sub requests
        @subs = SubRequest.where("end >= ?", Time.now).order('start')
        @title_add=" Index"
        @index_link=false
      end
    else #all future sub requests
      @subs = SubRequest.where("end >= ?", Time.now).order('start')
      @title_add=" Index"
      @index_link=false
    end
    @subs = @subs.select {|sub| (current_user.can_take_sub?(sub) || current_user.is_admin_of?(sub.shift.department) || sub.user == current_user)}

    @limit = (params[:limit].blank? ? 25 : params[:limit].to_i)
    if @limit<@subs.size
      @limit_links=true
    else
      @limit_links=false
      @limit=@subs.size
    end
  end

  def show
    @sub_request = SubRequest.find(params[:id])
    @sub_request.user_is_eligible?(current_user) || user_is_owner_or_admin_of(@sub_request.shift, current_department)
    #if user_is_own_or_admin_of fails, it will redirect away from page w/ associated error message.
  end

  def new
    shift = Shift.find_by_id(params[:shift_id])
    if shift && shift.scheduled? #avoids attempting to call for start times of a non-existant shift
      @sub_request = SubRequest.new(shift_id: params[:shift_id])
      @sub_request.mandatory_start = @sub_request.start = @sub_request.shift.start
      @sub_request.mandatory_end = @sub_request.end = @sub_request.shift.end
      return unless user_is_owner_or_admin_of(@sub_request.shift, current_department)    #is 'return unless' unnessecary here? -Bay
    else
      flash[:notice] = 'Sub request cannot be created for an unscheduled shift.'
      redirect_to dashboard_path
    end
  end

  def edit
    @sub_request = SubRequest.find(params[:id])
    return unless user_is_owner_or_admin_of(@sub_request.shift, current_department)        #is 'return unless' unnessecary here? -Bay
  end

  def create
    parse_date_and_time_output(params[:sub_request])
    join_date_and_time(params[:sub_request])
    @sub_request = SubRequest.new(params[:sub_request])
    @sub_request.shift = Shift.find(params[:shift_id])
    unless params[:selected_users].empty?
      @sub_request.requested_users = parse_users_autocomplete(params[:selected_users])
    end
    unless @sub_request.save
      render action: "new"
    else
      flash[:notice] = 'Sub request was successfully created.'
      @users = @sub_request.potential_takers
      for user in @users
        UserMailer.delay.sub_created_notify(user, @sub_request)
      end
      redirect_to action: "show", id: @sub_request
    end
  end

  def update
    @sub_request = SubRequest.find(params[:id])
    return unless user_is_owner_or_admin_of(@sub_request.shift, current_department)
    begin
      SubRequest.transaction do
          @sub_request.requested_users = []
          unless params[:selected_users].empty?
             @sub_request.requested_users = parse_users_autocomplete(params[:selected_users])
           end
          parse_date_and_time_output(params[:sub_request])
          join_date_and_time(params[:sub_request])
          @sub_request.update_attributes(params[:sub_request])
          @sub_request.save!
        end
      rescue Exception => e
        render action: "edit", id: @sub_request
      else
        flash[:notice] = 'Sub Request was successfully updated.'
        redirect_to action: "show", id: @sub_request
      end
  end

  def destroy
    @sub_request = SubRequest.find(params[:id])
    return unless user_is_owner_or_admin_of(@sub_request.shift, current_department)

    @shift = @sub_request.shift

    @sub_request.destroy
    #the user can cancel a sub request and sign into their shift
    if params[:sign_in]
      flash[:notice] = "Successfully destroyed sub request. You can now sign into your shift."
      redirect_to shift_path(@shift)
    else
      flash[:notice] = "Successfully destroyed sub request."
      redirect_to sub_requests_path
    end
  end

  def get_take_info
    begin
      @sub_request = SubRequest.find(params[:id])
      if !@sub_request.user_is_eligible?(current_user)
         flash.now[:error] = "Access Denied.  You do not have permission to take that sub_request."
       end
    rescue
      flash.now[:error] = "Oops! It seems the Sub Request you tried to take has already been taken (or canceled). Next time, try clicking sooner."
    end

    if Time.now > @sub_request.start
      flash[:notice] = 'This sub request has already started.  If you take this sub request, your shift will begin immediately.'
    end

  end

  def take
    @sub_request = SubRequest.find(params[:id])
    return unless require_department_membership(@sub_request.shift.department)
    #The form returns string values of "true" or "false", we must convert these to boolean
    just_mandatory = params[:sub_request][:mandatory_start] == "true" ? true : false
    begin
      SubRequest.take(@sub_request, current_user, just_mandatory)
      flash[:notice] = 'Sub request was successfully taken.'
      redirect_to dashboard_path
    rescue Exception => e
      if !@sub_request.user_is_eligible?(current_user)
        flash[:error] = 'You are not authorized to take this shift.'
      else
        flash[:error] = e.message.gsub("Validation failed: ", "")
      end
      render action: "get_take_info"
     end
  end


end