class ProjectsController < ApplicationController
	before_filter :get_plan_list_columns, only: %i( index )

	# GET /projects
	# GET /projects.json
	def index
    authorize Project
    ## TODO: Is this A magic String? the "Show_shib_link?" as we define it and users dont see cookies
		if user_signed_in? then
			if (current_user.shibboleth_id.nil? || current_user.shibboleth_id.length == 0) && !cookies[:show_shib_link].nil? && cookies[:show_shib_link] == "show_shib_link" then
				flash.notice = "Would you like to #{view_context.link_to I18n.t('helpers.shibboleth_to_link_text'), user_omniauth_shibboleth_path}".html_safe
			end

			@projects = current_user.projects.filter(params[:filter])
			@has_projects = current_user.projects.any? # unfiltered count

			respond_to do |format|
				format.html # index.html.erb
			end
		else
			respond_to do |format|
				format.html { redirect_to edit_user_registration_path }
			end
		end
	end

	# GET /projects/1
	# GET /projects/1.json
	def show
		@project = Project.find(params[:id])
    authorize @project
		@show_form = false
		if params[:show_form] == "yes" then
			@show_form = true
		end
		if user_signed_in? && @project.readable_by(current_user.id) then
			respond_to do |format|
				format.html # show.html.erb
			end
		elsif user_signed_in? then
			respond_to do |format|
				format.html { redirect_to projects_url, notice: I18n.t('helpers.settings.plans.errors.no_access_account') }
			end
		else
			respond_to do |format|
				format.html { redirect_to edit_user_registration_path }
			end
		end
	end

	# GET /projects/new
	# GET /projects/new.json
	def new
		if user_signed_in? then
			@project = Project.new
      authorize @project
			@project.organisation = current_user.organisation
			@funders = orgs_of_type(constant("organisation_types.funder"), true)
      @templates = get_available_templates
      @guidance_groups = get_available_guidance
      @always_guidance = get_always_available_guidance
      @institutions = orgs_of_type(constant("organisation_types.institution"))
      
			respond_to do |format|
			  format.html # new.html.erb
			end
		else
			respond_to do |format|
				format.html { redirect_to edit_user_registration_path }
			end
		end
	end

	# GET /projects/1/edit
     # Should this be removed?
	def edit
		@project = Project.find(params[:id])
    authorize @project
		if !user_signed_in? then
               respond_to do |format|
				format.html { redirect_to edit_user_registration_path }
			end
		elsif !@project.editable_by(current_user.id) then
			respond_to do |format|
				format.html { redirect_to projects_url, notice: I18n.t('helpers.settings.plans.errors.no_access_account') }
			end
		end
	end

	def share
		@project = Project.find(params[:id])
    authorize @project
		if !user_signed_in? then
               respond_to do |format|
				format.html { redirect_to edit_user_registration_path }
			end
		elsif !@project.editable_by(current_user.id) then
			respond_to do |format|
				format.html { redirect_to projects_url, notice: I18n.t('helpers.settings.plans.errors.no_access_account') }
			end
		end
	end

	def export
		@project = Project.find(params[:id])
    authorize @project
		if !user_signed_in? then
               respond_to do |format|
				format.html { redirect_to edit_user_registration_path }
			end
		else
			respond_to do |format|
				format.html { render action: "export" }

			end
		end
	end

	# POST /projects
	# POST /projects.json
	def create
    	if user_signed_in? then
			@project = Project.new(params[:project])
      authorize @project
			if @project.dmptemplate.nil? && params[:project][:funder_id] != "" then # this shouldn't be necessary - see setter for funder_id in project.rb
				funder = Organisation.find(params[:project][:funder_id])
				if funder.dmptemplates.count == 1 then
					@project.dmptemplate = funder.published_templates.first
				end
			elsif @project.dmptemplate.nil? || params[:default_tag] == 'true' then
				if @project.organisation.nil?  || params[:default_tag] == 'true'  || @project.organisation.published_templates.first.nil? then
					@project.dmptemplate = Dmptemplate.find_by_is_default(true)
				else
					@project.dmptemplate = @project.organisation.published_templates.first
				end
			end
			@project.principal_investigator = current_user.name(false)

			@project.title = I18n.t('helpers.project.my_project_name')+' ('+@project.dmptemplate.title+')'
			@project.assign_creator(current_user.id)
			respond_to do |format|
				if @project.save
					format.html { redirect_to({:action => "show", :id => @project.slug, :show_form => "yes"}, {:notice => I18n.t('helpers.project.success')}) }
				else
					format.html { render action: "new" }
				end
			end
		else
			render(:file => File.join(Rails.root, 'public/403.html'), :status => 403, :layout => false)
		end
	end

	# PUT /projects/1
	# PUT /projects/1.json
	def update
		@project = Project.find(params[:id])
    authorize @project
		if user_signed_in? && @project.editable_by(current_user.id) then
      if @project.update_attributes(params[:project])
        respond_to do |format|
				  format.html { redirect_to({:action => "show", :id => @project.slug, notice: I18n.t('helpers.project.success_update') }) }
        end
      else
        respond_to do |format|
					format.html { render action: "edit" }
				end
			end
		else
			render(:file => File.join(Rails.root, 'public/403.html'), :status => 403, :layout => false)
		end
	end

	# DELETE /projects/1
	# DELETE /projects/1.json
	def destroy
		@project = Project.find(params[:id])
    authorize @project
		if user_signed_in? && @project.editable_by(current_user.id) then
			@project.destroy

			respond_to do |format|
				format.html { redirect_to projects_url }
			end
		else
			render(:file => File.join(Rails.root, 'public/403.html'), :status => 403, :layout => false)
		end
	end

  # returns to AJAX call from frontend 
  # difficult to secure as it passes through params, and dosent curate data based
  # on what the user can "view" or is public
	# GET /projects/possible_templates.json
	def possible_templates
		if !params[:funder].nil? && params[:funder] != "" && params[:funder] != "undefined" then
			funder = Organisation.find(params[:funder])
		else
			funder = nil
		end
		if !params[:institution].nil? && params[:institution] != "" && params[:institution] != "undefined" then
			institution = Organisation.find(params[:institution])
		else
			institution = nil
		end
		templates = {}
		unless funder.nil? then
			funder.published_templates.each do |t|
				templates[t.id] = t.title
			end
		end
		if templates.count == 0 && !institution.nil? then
			institution.published_templates.each do |t|
				templates[t.id] = t.title
			end
			institution.children.each do |o|
				o.published_templates.each do |t|
					templates[t.id] = t.title
				end
			end
		end
		respond_to do |format|
			format.json { render json: templates.to_json }
		end
	end

  # returns to AJAX call from frontend 
	# difficult to secure as it passes through params, and dosent curate data based
  # on what the user can "view" or is public
  def possible_guidance
    authorize @project
		if !params[:template].nil? && params[:template] != "" && params[:template] != "undefined" then
			template = Dmptemplate.find(params[:template])
		else
			template = nil
		end
		if !params[:institution].nil? && params[:institution] != "" && params[:institution] != "undefined" then
			institution = Organisation.find(params[:institution])
		else
			institution = nil
		end
		excluded_orgs = orgs_of_type(constant("organisation_types.funder")) + orgs_of_type(constant("organisation_types.institution")) + Organisation.orgs_with_parent_of_type(constant("organisation_types.institution"))
		guidance_groups = {}
		ggs = GuidanceGroup.guidance_groups_excluding(excluded_orgs) 

		ggs.each do |gg|
			guidance_groups[gg.id] = gg.name
		end

        #subset guidance that belong to the institution
		unless institution.nil? then
      authorize Project
			optional_gg = GuidanceGroup.where("optional_subset =  ? && organisation_id = ?", true, institution.id)
			optional_gg.each do|optional|
				guidance_groups[optional.id] = optional.name
			end

			institution.children.each do |o|
				o.guidance_groups.each do |gg|
					include = false
					gg.guidances.each do |g|
						if g.dmptemplate.nil? || g.dmptemplate_id == template.id then
							include = true
							break
						end
					end
					if include then
						guidance_groups[gg.id] = gg.name
					end
				end
			end
		end

        #If template belongs to a funder and that funder has subset guidance display then.
        if !template.nil? && template.organisation.organisation_type.name == constant("organisation_types.funder") then
            optional_gg = GuidanceGroup.where("optional_subset =  ? && organisation_id = ?", true, template.organisation_id)
			optional_gg.each do|optional|
				guidance_groups[optional.id] = optional.name
			end
        end


		respond_to do |format|
			format.json { render json: guidance_groups.to_json }
		end
	end
=end
  
	private
  	def orgs_of_type(org_type_name, published_templates = false)
  		org_type = OrganisationType.find_by_name(org_type_name)
  		all_such_orgs = org_type.organisations
  		if published_templates then
  			with_published = Array.new
  			all_such_orgs.each do |o|
  				if o.published_templates.count > 0 then
  					with_published << o
  				end
  			end
  			return with_published.sort_by {|o| [o.sort_name, o.name] }
  		else
  			return all_such_orgs.sort_by {|o| [o.sort_name, o.name] }
  		end
  	end
  
    # -----------------------------------------------------------
    def get_available_templates
      Dmptemplate.where(published: true)
    end
  
    # -----------------------------------------------------------
    # Some guidance is always available to the user regardless of 
    # the template or institution. 
    #
    # TODO: Reevaluate this. We should probably only do this for 
    #       guidance groups who have guidance attached to themes 
    # -----------------------------------------------------------
    def get_always_available_guidance
      # Exclude Funders, Institutions, or children of Institutions
  		excluded_orgs = orgs_of_type(constant("organisation_types.funder")) + 
                      orgs_of_type(constant("organisation_types.institution")) + 
                      Organisation.orgs_with_parent_of_type(constant("organisation_types.institution"))

      GuidanceGroup.guidance_groups_excluding(excluded_orgs) 
    end
  
    # -----------------------------------------------------------
    # This is a simplified version of the old possible_guidance method
    # above. It sends all possible guidance to the client instead of
    # forcing the client to make ajax calls to change the available
    # guidance list (that is now handled via JS clientside)
    #
    # TODO: Reevaluate whether or not this logic makes sense once the 
    #       DB has been cleaned up
    # -----------------------------------------------------------
    def get_available_guidance
      guidance_groups = []

      #subset guidance that belong to an institution
      optional_gg = GuidanceGroup.where("optional_subset =  ? && organisation_id IS NOT NULL", true)
      optional_gg.each do|optional|
        guidance_groups << optional.id
      
        optional.organisation.children.each do |o|
          o.guidance_groups.each do |gg|
            guidance_groups << gg.id
          end
        end
      end

      # If template belongs to a funder and is an optional_subset
      optional_gg = GuidanceGroup.where("optional_subset =  ? && organisation_id IN (?)", true, orgs_of_type(constant("organisation_types.funder")))
      optional_gg.each do|optional|
        guidance_groups << optional.id
      end
    
      GuidanceGroup.where(id: guidance_groups)
    end  
end