farhatahmad / greenlight

class AdminsController < ApplicationController

  include Pagy::Backend

  include Themer

  include Emailer

  include Recorder

  include Rolify

  include Populator

  manage_users = [:edit_user, :promote, :demote, :ban_user, :unban_user, :approve, :reset, :merge_user]

  manage_deleted_users = [:undelete]

  authorize_resource class: false

  before_action :find_user, only: manage_users

  before_action :find_deleted_user, only: manage_deleted_users

  before_action :verify_admin_of_user, only: [manage_users, manage_deleted_users]

  # GET /admins

  def index

    # Initializa the data manipulation variables

    @search = params[:search] || ""

    @order_column = params[:column] && params[:direction] != "none" ? params[:column] : "created_at"

    @order_direction = params[:direction] && params[:direction] != "none" ? params[:direction] : "DESC"

    @tab = params[:tab] || "active"

    @role = params[:role] ? Role.find_by(name: params[:role], provider: @user_domain) : nil

    users = if @tab == "invited"

      invited_users_list

    else

      manage_users_list

    end

    @pagy, @users = pagy(users)

  end

  # GET /admins/site_settings

  def site_settings

    @tab = params[:tab] || "appearance"

  end

  # GET /admins/server_recordings

  def server_recordings

    @search = params[:search] || ""

    if @search.present?

      if @search.include? "@"

        user_email = @search

      else

        room_uid = @search

      end

    else

      @latest = true

    end

    @pagy, @recordings = pagy_array(recordings_to_show(user_email, room_uid))

  end

  # GET /admins/rooms

  def server_rooms

    @search = params[:search] || ""

    @order_column = params[:column] && params[:direction] != "none" ? params[:column] : "status"

    @order_direction = params[:direction] && params[:direction] != "none" ? params[:direction] : "DESC"

    begin

      meetings = all_running_meetings[:meetings]

    rescue BigBlueButton::BigBlueButtonException

      flash[:alert] = I18n.t("administrator.rooms.timeout", server: I18n.t("bigbluebutton"))

      meetings = []

    end

    @order_column = "created_at" if meetings.empty?

    @running_room_bbb_ids = meetings.pluck(:meetingID)

    @participants_count = {}

    meetings.each do |meet|

      @participants_count[meet[:meetingID]] = meet[:participantCount]

    end

    @pagy, @rooms = pagy_array(server_rooms_list)

  end

  # GET /admins/room_configuration

  def room_configuration

  end

  # MANAGE USERS

  # GET /admins/edit/:user_uid

  def edit_user

    session[:prev_url] = request.referer if request.referer.present?

  end

  # POST /admins/ban/:user_uid

  def ban_user

    @user.set_role :denied

    redirect_back fallback_location: admins_path, flash: { success: I18n.t("administrator.flash.banned") }

  end

  # POST /admins/unban/:user_uid

  def unban_user

    @user.set_role :user

    redirect_back fallback_location: admins_path, flash: { success: I18n.t("administrator.flash.unbanned") }

  end

  # POST /admins/approve/:user_uid

  def approve

    @user.set_role :user

    send_user_approved_email(@user)

    redirect_back fallback_location: admins_path, flash: { success: I18n.t("administrator.flash.approved") }

  end

  # POST /admins/approve/:user_uid

  def undelete

    # Undelete the user and all of his rooms

    @user.undelete!

    @user.rooms.deleted.each(&:undelete!)

    redirect_back fallback_location: admins_path, flash: { success: I18n.t("administrator.flash.restored") }

  end

  # POST /admins/invite

  def invite

    emails = params[:invite_user][:email].split(",")

    emails.each do |email|

      invitation = create_or_update_invite(email)

      send_invitation_email(current_user.name, email, invitation.invite_token)

    end

    redirect_back fallback_location: admins_path

  end

  # GET /admins/reset

  def reset

    send_password_reset_email(@user, @user.create_reset_digest)

      redirect_path = session[:prev_url]

      session.delete(:prev_url)

    else

      redirect_path = admins_path

    end

    redirect_to redirect_path, flash: { success: I18n.t("administrator.flash.reset_password") }

  end

  # POST /admins/merge/:user_uid

  def merge_user

    begin

      # Get uid of user that will be merged into the other account

      uid_to_merge = params[:merge]

      logger.info "#{current_user.uid} is attempting to merge #{uid_to_merge} into #{@user.uid}"

      # Check to make sure the 2 users are unique

      raise "Can not merge the user into themself" if uid_to_merge == @user.uid

      # Find user to merge

      user_to_merge = User.find_by(uid: uid_to_merge)

      # Move over user's rooms

      user_to_merge.rooms.each do |room|

        room.owner = @user

        room.name = "(#{I18n.t('merged')}) #{room.name}"

        room.save!

      end

      # Reload user to update merge rooms

      user_to_merge.reload

      # Delete merged user

      user_to_merge.destroy(true)

    rescue => e

      logger.info "Failed to merge #{uid_to_merge} into #{@user.uid}: #{e}"

      flash[:alert] = I18n.t("administrator.flash.merge_fail")

    else

      logger.info "#{current_user.uid} successfully merged #{uid_to_merge} into #{@user.uid}"

      flash[:success] = I18n.t("administrator.flash.merge_success")

    end

    redirect_back fallback_location: admins_path

  end

  # GET /admins/merge_list

  def merge_list

    # Returns a list of users that can merged into another user

    initial_list = User.without_role(:super_admin)

                       .where.not(uid: current_user.uid)

                       .merge_list_search(params[:search])

    initial_list = initial_list.where(provider: @user_domain) if Rails.configuration.loadbalanced_configuration

    # Respond with JSON object of users

    respond_to do |format|

      format.json { render body: initial_list.pluck_to_hash(:uid, :name, :email).to_json }

    end

  end

  # SITE SETTINGS

  # POST /admins/update_settings

  def update_settings

    tab = params[:tab] || "settings"

    @settings.update_value(params[:setting], params[:value])

    flash_message = I18n.t("administrator.flash.settings")

    if params[:value] == "Default Recording Visibility"

      flash_message += ". " + I18n.t("administrator.site_settings.recording_visibility.warning")

    end

    redirect_to admin_site_settings_path(tab: tab), flash: { success: flash_message }

  end

  # POST /admins/color

  def coloring

    @settings.update_value("Primary Color", params[:value])

    @settings.update_value("Primary Color Lighten", color_lighten(params[:value]))

    @settings.update_value("Primary Color Darken", color_darken(params[:value]))

    redirect_to admin_site_settings_path(tab: "appearance"), flash: { success: I18n.t("administrator.flash.settings") }

  end

  # POST /admins/registration_method/:method

  def registration_method

    new_method = Rails.configuration.registration_methods[params[:value].to_sym]

    # Only allow change to Join by Invitation if user has emails enabled

    if !Rails.configuration.enable_email_verification && new_method == Rails.configuration.registration_methods[:invite]

      redirect_to admin_site_settings_path(tab: "settings"),

        flash: { alert: I18n.t("administrator.flash.invite_email_verification") }

    else

      @settings.update_value("Registration Method", new_method)

      redirect_to admin_site_settings_path(tab: "settings"),

        flash: { success: I18n.t("administrator.flash.registration_method_updated") }

    end

  end

  # POST /admins/clear_auth

  def clear_auth

    User.include_deleted.where(provider: @user_domain).update_all(social_uid: nil)

    redirect_to admin_site_settings_path(tab: "settings"), flash: { success: I18n.t("administrator.flash.settings") }

  end

  # POST /admins/clear_cache

  def clear_cache

    Rails.cache.delete("#{@user_domain}/getUser")

    Rails.cache.delete("#{@user_domain}/getUserGreenlightCredentials")

    redirect_to admin_site_settings_path(tab: "settings"), flash: { success: I18n.t("administrator.flash.settings") }

  end

  # POST /admins/log_level

  def log_level

    Rails.logger.level = params[:value].to_i

    redirect_to admin_site_settings_path(tab: "administration"), flash: { success: I18n.t("administrator.flash.settings") }

  end

  # ROOM CONFIGURATION

  # POST /admins/update_room_configuration

  def update_room_configuration

    @settings.update_value(params[:setting], params[:value])

    flash_message = I18n.t("administrator.flash.room_configuration")

    redirect_to admin_room_configuration_path, flash: { success: flash_message }

  end

  # ROLES

  # GET /admins/roles

  def roles

    @roles = all_roles(params[:selected_role])

  end

  # POST /admins/role

  # This method creates a new role scoped to the users provider

  def new_role

    new_role = create_role(params[:role][:name])

    return redirect_to admin_roles_path, flash: { alert: I18n.t("administrator.roles.invalid_create") } if new_role.nil?

    redirect_to admin_roles_path(selected_role: new_role.id)

  end

  # PATCH /admin/roles/order

  # This updates the priority of a site's roles

  # Note: A lower priority role will always get used before a higher priority one

  def change_role_order

    unless update_priority(params[:role])

      redirect_to admin_roles_path, flash: { alert: I18n.t("administrator.roles.invalid_order") }

    end

  end

  # POST /admin/role/:role_id

  # This method updates the permissions assigned to a role

  def update_role

    role = Role.find(params[:role_id])

    flash[:alert] = I18n.t("administrator.roles.invalid_update") unless update_permissions(role)

    redirect_to admin_roles_path(selected_role: role.id)

  end

  # DELETE admins/role/:role_id

  # This deletes a role

  def delete_role

    role = Role.find(params[:role_id])

    # Make sure no users are assigned to the role and the role isn't a reserved role

    # before deleting

    if role.users.count.positive?

      flash[:alert] = I18n.t("administrator.roles.role_has_users", user_count: role.users.count)

      return redirect_to admin_roles_path(selected_role: role.id)

    elsif Role::RESERVED_ROLE_NAMES.include?(role) || role.provider != @user_domain ||

          role.priority <= current_user.role.priority

      return redirect_to admin_roles_path(selected_role: role.id)

    else

      role.role_permissions.delete_all

      role.delete

    end

    redirect_to admin_roles_path

  end

  private

  def find_user

    @user = User.find_by(uid: params[:user_uid])

  end

  def find_deleted_user

    @user = User.deleted.find_by(uid: params[:user_uid])

  end

  # Verifies that admin is an administrator of the user in the action

  def verify_admin_of_user

    redirect_to admins_path,

      flash: { alert: I18n.t("administrator.flash.unauthorized") } unless current_user.admin_of?(@user, "can_manage_users")

  end

  # Creates the invite if it doesn't exist, or updates the updated_at time if it does

  def create_or_update_invite(email)

    invite = Invitation.find_by(email: email, provider: @user_domain)

    # Invite already exists

    if invite.present?

      # Updates updated_at to now

      invite.touch

    else

      # Creates invite

      invite = Invitation.create(email: email, provider: @user_domain)

    end

    invite

  end

end