class UsersController < ApplicationController

  skip_before_action :authenticate_user!

  #TODO felipe_artur: Remove this "set_user" before action. It is not good to use before filters for loading database records.

  before_action :set_user, except: [:show]
  before_action :authorize_read_user, only: [:show]

  def show

    respond_to do |format|
      format.html

      format.atom do
        load_events
        render layout: false
      end

      format.json do
        load_events
        pager_json("events/_events", @events.count)
      end

    end
  end

  def groups
    load_groups

    respond_to do |format|

      format.html { render 'show' }

      format.json do
        render json: {
          html: view_to_html_string("shared/groups/_list", groups: @groups)
        }
      end
    end

  end

  def projects

    load_projects

    respond_to do |format|

      format.html { render 'show' }

      format.json do
        render json: {
          html: view_to_html_string("shared/projects/_list", projects: @projects, remote: true)
        }
      end
    end

  end

  def contributed

    load_contributed_projects

    respond_to do |format|

      format.html { render 'show' }

      format.json do
        render json: {
          html: view_to_html_string("shared/projects/_list", projects: @contributed_projects)
        }
      end
    end

  end

  def calendar

    calendar = contributions_calendar

    @timestamps = calendar.timestamps

    @starting_year = calendar.starting_year
    @starting_month = calendar.starting_month

    render 'calendar', layout: false

  end

  def calendar_activities

    @calendar_date = Date.parse(params[:date]) rescue Date.today
    @events = contributions_calendar.events_by_date(@calendar_date)

    render 'calendar_activities', layout: false
  end

  private

  def authorize_read_user

    set_user
    render_404 unless can?(current_user, :read_user, @user)

  end

  def set_user

    @user = User.find_by_username!(params[:username])
  end

  def contributed_projects

    ContributedProjectsFinder.new(@user).execute(current_user)

  end

  def contributions_calendar
    @contributions_calendar ||= Gitlab::ContributionsCalendar.

      new(contributed_projects, @user)

  end

  def load_events
    # Get user activity feed for projects common for both users
    @events = @user.recent_events.

      merge(projects_for_current_user).
      references(:project).
      with_associations.
      limit_recent(20, params[:offset])
  end

  def load_projects
    @projects =
      PersonalProjectsFinder.new(@user).execute(current_user)

      .page(params[:page])

  end

  def load_contributed_projects
    @contributed_projects = contributed_projects.joined(@user)
  end

  def load_groups

    @groups = JoinedGroupsFinder.new(@user).execute(current_user)

  end

  def projects_for_current_user
    ProjectsFinder.new.execute(current_user)

  end

end