class PeopleController < ApplicationController
  before_action :set_person, only: [:show, :edit, :update, :destroy]
  before_action :set_person_from_token, only: [:calendar]
  before_action :require_login!, except: [:calendar]
  before_action :require_admin!, except: [:calendar, :show]

  # GET /people
  # GET /people.json
  def index
    @people = Person.all
  end

  # GET /people/1
  # GET /people/1.json
  def show
    if @person != current_person
      require_admin!
    end
  end

  # GET /people/new
  def new
    @person = Person.new
  end

  # GET /people/1/edit
  def edit
  end

  # POST /people
  # POST /people.json
  def create
    @person = Person.new(person_params)

    respond_to do |format|
      if @person.save
        format.html do
          flash_message(:success, I18n.t('person.created'))
          redirect_to @person
        end
        format.json { render :show, status: :created, location: @person }
      else
        format.html { render :new }
        format.json { render json: @person.errors, status: :unprocessable_entity }
      end
    end
  end

  def mass_new
  end

  def mass_create
    require 'csv'
    uploaded_io = params[:spreadsheet]
    result = Person.from_csv(uploaded_io.read)
    flash_message(:success, "#{result.count} people created")
    redirect_to :people
  end

  # PATCH/PUT /people/1
  # PATCH/PUT /people/1.json
  def update
    respond_to do |format|
      if @person.update(person_params)
        format.html do
          flash_message(:success, I18n.t('person.updated'))
          redirect_to @person
        end

        format.json { render :show, status: :ok, location: @person }
      else
        format.html { render :edit }
        format.json { render json: @person.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /people/1
  # DELETE /people/1.json
  def destroy
    @person.destroy
    respond_to do |format|
      format.html do
        flash_message(:success, I18n.t('person.destroyed'))
        redirect_to people_url
      end

      format.json { head :no_content }
    end
  end

  # GET /c/:calendar_token
  def calendar
    cal = Icalendar::Calendar.new

    @person.participants.joins(:activity).where('end > ?', 3.months.ago).each do |p|
      next if !p.attending && params[:skipcancel]

      a = p.activity
      description_items = [a.description]
      orgi = a.organizer_names
      orgi_names = orgi.join ', '
      orgi_line = case orgi.count
                  when 0 then I18n.t 'activities.organizers.no_organizers'
                  when 1 then "#{I18n.t 'activities.organizers.one'}: #{orgi_names}"
                  else "#{I18n.t 'activities.organizers.other'}: #{orgi_names}"
                  end

      description_items << orgi_line

      if a.subgroups.any?
        if p.subgroup
          description_items << "#{I18n.t 'activities.participant.yoursubgroup'}: #{p.subgroup}"
        end

        subgroup_names = a.subgroups.map(&:name).join ', '
        description_items << "#{I18n.t 'activerecord.models.subgroup.other'}: #{subgroup_names}"

      end

      cal.event do |e|
        e.uid = group_activity_url a.group, a
        e.ip_class = "PRIVATE"
        e.dtstart = a.start
        e.dtend = a.end

        e.status = p.ical_attending

        e.summary = a.name
        e.location = a.location

        e.description = description_items.join "\n"

        e.url = group_activity_url a.group, a
      end
    end

    render plain: cal.to_ical
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_person
      @person = Person.find(params[:id])
    end

    # Set person from calendar token
    def set_person_from_token
      @person = Person.find_by(calendar_token: params[:calendar_token])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def person_params
      params.require(:person).permit(:first_name, :infix, :last_name, :email, :birth_date, :is_admin)
    end
end