# frozen_string_literal: true

class Admin::UsersController < Admin::StaffController
  before_action :fetch_user,
                only: %i[
                  suspend
                  unsuspend
                  log_out
                  grant_admin
                  revoke_admin
                  revoke_moderation
                  grant_moderation
                  approve
                  activate
                  deactivate
                  silence
                  unsilence
                  trust_level
                  trust_level_lock
                  add_group
                  remove_group
                  primary_group
                  anonymize
                  merge
                  reset_bounce_score
                  disable_second_factor
                  delete_posts_batch
                  sso_record
                  delete_associated_accounts
                ]

  def index
    users = ::AdminUserIndexQuery.new(params).find_users

    opts = {}
    if params[:show_emails] == "true"
      StaffActionLogger.new(current_user).log_show_emails(users, context: request.path)
      opts[:emails_desired] = true
    end

    render_serialized(users, AdminUserListSerializer, opts)
  end

  def show
    @user = User.find_by(id: params[:id])
    raise Discourse::NotFound unless @user

    render_serialized(
      @user,
      AdminDetailedUserSerializer,
      root: false,
      similar_users_count: @user.similar_users.count,
    )
  end

  def similar_users
    @user = User.find_by(id: params[:user_id])
    raise Discourse::NotFound if !@user

    render_json_dump(
      {
        users:
          ActiveModel::ArraySerializer.new(
            @user.similar_users.limit(User::MAX_SIMILAR_USERS),
            each_serializer: SimilarAdminUserSerializer,
            scope: guardian,
            root: false,
          ),
      },
    )
  end

  def delete_posts_batch
    deleted_posts = @user.delete_posts_in_batches(guardian)
    # staff action logs will have an entry for each post

    render json: { posts_deleted: deleted_posts.length }
  end

  # DELETE action to delete penalty history for a user
  def penalty_history
    # We don't delete any history, we merely remove the action type
    # with a removed type. It can still be viewed in the logs but
    # will not affect TL3 promotions.
    sql = <<~SQL
      UPDATE user_histories
      SET action = CASE
        WHEN action = :silence_user THEN :removed_silence_user
        WHEN action = :unsilence_user THEN :removed_unsilence_user
        WHEN action = :suspend_user THEN :removed_suspend_user
        WHEN action = :unsuspend_user THEN :removed_unsuspend_user
      END
      WHERE target_user_id = :user_id
        AND action IN (
          :silence_user,
          :suspend_user,
          :unsilence_user,
          :unsuspend_user
        )
    SQL

    DB.exec(
      sql,
      UserHistory
        .actions
        .slice(
          :silence_user,
          :suspend_user,
          :unsilence_user,
          :unsuspend_user,
          :removed_silence_user,
          :removed_unsilence_user,
          :removed_suspend_user,
          :removed_unsuspend_user,
        )
        .merge(user_id: params[:user_id].to_i),
    )

    render json: success_json
  end

  def suspend
    User::Suspend.call do
      on_success do
        render_json_dump(
          suspension: {
            suspend_reason: result.reason,
            full_suspend_reason: result.full_reason,
            suspended_till: result.user.suspended_till,
            suspended_at: result.user.suspended_at,
            suspended_by: BasicUserSerializer.new(current_user, root: false).as_json,
          },
        )
      end
      on_failed_contract do |contract|
        render json: failed_json.merge(errors: contract.errors.full_messages), status: 400
      end
      on_model_not_found(:user) { raise Discourse::NotFound }
      on_failed_policy(:not_suspended_already) do |policy|
        render json: failed_json.merge(message: policy.reason), status: 409
      end
      on_failed_policy(:can_suspend_all_users) { raise Discourse::InvalidAccess.new }
    end
  end

  def unsuspend
    guardian.ensure_can_suspend!(@user)
    @user.suspended_till = nil
    @user.suspended_at = nil
    @user.save!
    StaffActionLogger.new(current_user).log_user_unsuspend(@user)

    DiscourseEvent.trigger(:user_unsuspended, user: @user)

    render_json_dump(suspension: { suspended_till: nil, suspended_at: nil })
  end

  def log_out
    if @user
      @user.user_auth_tokens.destroy_all
      @user.logged_out
      render json: success_json
    else
      render json: { error: I18n.t("admin_js.admin.users.id_not_found") }, status: 404
    end
  end

  def revoke_admin
    guardian.ensure_can_revoke_admin!(@user)
    @user.revoke_admin!
    StaffActionLogger.new(current_user).log_revoke_admin(@user)
    render_serialized(@user, AdminDetailedUserSerializer, root: false)
  end

  def grant_admin
    result = run_second_factor!(SecondFactor::Actions::GrantAdmin)
    if result.no_second_factors_enabled?
      render json: success_json.merge(email_confirmation_required: true)
    else
      render json: success_json
    end
  end

  def revoke_moderation
    guardian.ensure_can_revoke_moderation!(@user)
    @user.revoke_moderation!
    StaffActionLogger.new(current_user).log_revoke_moderation(@user)
    render_serialized(@user, AdminDetailedUserSerializer, root: false)
  end

  def grant_moderation
    guardian.ensure_can_grant_moderation!(@user)
    @user.grant_moderation!
    StaffActionLogger.new(current_user).log_grant_moderation(@user)
    render_serialized(@user, AdminDetailedUserSerializer, root: false)
  end

  def add_group
    group = Group.find(params[:group_id].to_i)
    raise Discourse::NotFound unless group

    return render_json_error(I18n.t("groups.errors.can_not_modify_automatic")) if group.automatic
    guardian.ensure_can_edit!(group)

    group.add(@user)
    GroupActionLogger.new(current_user, group).log_add_user_to_group(@user)

    render body: nil
  end

  def remove_group
    group = Group.find(params[:group_id].to_i)
    raise Discourse::NotFound unless group

    return render_json_error(I18n.t("groups.errors.can_not_modify_automatic")) if group.automatic
    guardian.ensure_can_edit!(group)

    if group.remove(@user)
      GroupActionLogger.new(current_user, group).log_remove_user_from_group(@user)
    end

    render body: nil
  end

  def primary_group
    if params[:primary_group_id].present?
      primary_group_id = params[:primary_group_id].to_i
      if group = Group.find(primary_group_id)
        guardian.ensure_can_change_primary_group!(@user, group)

        @user.primary_group_id = primary_group_id if group.user_ids.include?(@user.id)
      end
    else
      @user.primary_group_id = nil
    end

    @user.save!

    render body: nil
  end

  def trust_level
    guardian.ensure_can_change_trust_level!(@user)
    level = params[:level].to_i

    if @user.manual_locked_trust_level.nil?
      if [0, 1, 2].include?(level) && Promotion.public_send("tl#{level + 1}_met?", @user)
        @user.manual_locked_trust_level = level
        @user.save
      elsif level == 3 && Promotion.tl3_lost?(@user)
        @user.manual_locked_trust_level = level
        @user.save
      end
    end

    @user.change_trust_level!(level, log_action_for: current_user)

    render_serialized(@user, AdminUserSerializer)
  rescue Discourse::InvalidAccess => e
    render_json_error(e.message)
  end

  def trust_level_lock
    guardian.ensure_can_change_trust_level!(@user)

    new_lock = params[:locked].to_s
    return render_json_error I18n.t("errors.invalid_boolean") unless new_lock =~ /true|false/

    @user.manual_locked_trust_level = (new_lock == "true") ? @user.trust_level : nil
    @user.save

    StaffActionLogger.new(current_user).log_lock_trust_level(@user)
    Promotion.recalculate(@user, current_user)

    render body: nil
  end

  def approve
    guardian.ensure_can_approve!(@user)

    reviewable =
      ReviewableUser.find_by(target: @user) ||
        Jobs::CreateUserReviewable.new.execute(user_id: @user.id).reviewable

    reviewable.perform(current_user, :approve_user)
    render body: nil
  end

  def approve_bulk
    Reviewable.bulk_perform_targets(current_user, :approve_user, "ReviewableUser", params[:users])
    render body: nil
  end

  def activate
    guardian.ensure_can_activate!(@user)
    # ensure there is an active email token
    if !@user.email_tokens.active.exists?
      @user.email_tokens.create!(email: @user.email, scope: EmailToken.scopes[:signup])
    end
    @user.activate
    StaffActionLogger.new(current_user).log_user_activate(@user, I18n.t("user.activated_by_staff"))
    render json: success_json
  end

  def deactivate
    guardian.ensure_can_deactivate!(@user)
    @user.deactivate(current_user)
    StaffActionLogger.new(current_user).log_user_deactivate(
      @user,
      I18n.t("user.deactivated_by_staff"),
      params.slice(:context),
    )
    refresh_browser @user
    render json: success_json
  end

  def silence
    User::Silence.call do
      on_success do
        render_json_dump(
          silence: {
            silenced: true,
            silence_reason: result.full_reason,
            silenced_till: result.user.silenced_till,
            silenced_at: result.user.silenced_at,
            silenced_by: BasicUserSerializer.new(current_user, root: false).as_json,
          },
        )
      end
      on_failed_contract do |contract|
        render json: failed_json.merge(errors: contract.errors.full_messages), status: 400
      end
      on_model_not_found(:user) { raise Discourse::NotFound }
      on_failed_policy(:not_silenced_already) do |policy|
        render json: failed_json.merge(message: policy.reason), status: 409
      end
      on_failed_policy(:can_silence_all_users) { raise Discourse::InvalidAccess.new }
    end
  end

  def unsilence
    guardian.ensure_can_unsilence_user! @user
    UserSilencer.unsilence(@user, current_user)

    render_json_dump(
      unsilence: {
        silenced: false,
        silence_reason: nil,
        silenced_till: nil,
        silenced_at: nil,
      },
    )
  end

  def disable_second_factor
    guardian.ensure_can_disable_second_factor!(@user)
    user_second_factor = @user.user_second_factors
    user_security_key = @user.security_keys
    raise Discourse::InvalidParameters if user_second_factor.empty? && user_security_key.empty?

    user_second_factor.destroy_all
    user_security_key.destroy_all
    StaffActionLogger.new(current_user).log_disable_second_factor_auth(@user)

    Jobs.enqueue(:critical_user_email, type: "account_second_factor_disabled", user_id: @user.id)

    render json: success_json
  end

  def destroy
    user = User.find_by(id: params[:id].to_i)
    guardian.ensure_can_delete_user!(user)

    options = params.slice(:context, :delete_as_spammer)
    %i[delete_posts block_email block_urls block_ip].each do |param_name|
      options[param_name] = ActiveModel::Type::Boolean.new.cast(params[param_name])
    end
    options[:prepare_for_destroy] = true

    hijack do
      begin
        if UserDestroyer.new(current_user).destroy(user, options)
          render json: { deleted: true }
        else
          render json: {
                   deleted: false,
                   user: AdminDetailedUserSerializer.new(user, root: false).as_json,
                 }
        end
      rescue UserDestroyer::PostsExistError
        render json: {
                 deleted: false,
                 message:
                   I18n.t(
                     "user.cannot_delete_has_posts",
                     username: user.username,
                     count: user.posts.joins(:topic).count,
                   ),
               },
               status: 403
      end
    end
  end

  def badges
  end

  def tl3_requirements
  end

  def ip_info
    params.require(:ip)

    render json: DiscourseIpInfo.get(params[:ip], resolve_hostname: true)
  end

  def sync_sso
    return render body: nil, status: 404 unless SiteSetting.enable_discourse_connect

    begin
      sso =
        DiscourseConnect.parse(
          "sso=#{params[:sso]}&sig=#{params[:sig]}",
          secure_session: secure_session,
        )
    rescue DiscourseConnect::ParseError
      return(
        render json: failed_json.merge(message: I18n.t("discourse_connect.login_error")),
               status: 422
      )
    end

    begin
      user = sso.lookup_or_create_user
      DiscourseEvent.trigger(:sync_sso, user)
      render_serialized(user, AdminDetailedUserSerializer, root: false)
    rescue ActiveRecord::RecordInvalid => ex
      render json: failed_json.merge(message: ex.message), status: 403
    rescue DiscourseConnect::BlankExternalId => ex
      render json: failed_json.merge(message: I18n.t("discourse_connect.blank_id_error")),
             status: 422
    end
  end

  def delete_other_accounts_with_same_ip
    params.require(:ip)
    params.require(:exclude)
    params.require(:order)

    user_destroyer = UserDestroyer.new(current_user)
    options = {
      delete_posts: true,
      block_email: true,
      block_urls: true,
      block_ip: true,
      delete_as_spammer: true,
      context: I18n.t("user.destroy_reasons.same_ip_address", ip_address: params[:ip]),
    }

    AdminUserIndexQuery
      .new(params)
      .find_users(50)
      .each { |user| user_destroyer.destroy(user, options) }

    render json: success_json
  end

  def total_other_accounts_with_same_ip
    params.require(:ip)
    params.require(:exclude)
    params.require(:order)

    render json: { total: AdminUserIndexQuery.new(params).count_users }
  end

  def anonymize
    guardian.ensure_can_anonymize_user!(@user)
    opts = {}
    opts[:anonymize_ip] = params[:anonymize_ip] if params[:anonymize_ip].present?

    if user = UserAnonymizer.new(@user, current_user, opts).make_anonymous
      render json: success_json.merge(username: user.username)
    else
      render json:
               failed_json.merge(user: AdminDetailedUserSerializer.new(user, root: false).as_json)
    end
  end

  def merge
    target_username = params.require(:target_username)
    target_user = User.find_by_username(target_username)
    raise Discourse::NotFound if target_user.blank?

    guardian.ensure_can_merge_users!(@user, target_user)

    Jobs.enqueue(
      :merge_user,
      user_id: @user.id,
      target_user_id: target_user.id,
      current_user_id: current_user.id,
    )
    render json: success_json
  end

  def reset_bounce_score
    guardian.ensure_can_reset_bounce_score!(@user)
    @user.user_stat&.reset_bounce_score!
    StaffActionLogger.new(current_user).log_reset_bounce_score(@user)
    render json: success_json
  end

  def sso_record
    guardian.ensure_can_delete_sso_record!(@user)
    @user.single_sign_on_record.destroy!
    render json: success_json
  end

  def delete_associated_accounts
    guardian.ensure_can_delete_user_associated_accounts!(@user)
    previous_value =
      @user
        .user_associated_accounts
        .select(:provider_name, :provider_uid, :info)
        .map do |associated_account|
          {
            provider: associated_account.provider_name,
            uid: associated_account.provider_uid,
            info: associated_account.info,
          }.to_s
        end
        .join(",")
    StaffActionLogger.new(current_user).log_delete_associated_accounts(
      @user,
      previous_value:,
      context: params[:context],
    )
    @user.user_associated_accounts.delete_all
    render json: success_json
  end

  private

  def fetch_user
    @user = User.find_by(id: params[:user_id])
    raise Discourse::NotFound unless @user
  end

  def refresh_browser(user)
    MessageBus.publish "/file-change", ["refresh"], user_ids: [user.id]
  end
end