# frozen_string_literal: true

RSpec.describe(Flags::DestroyFlag) do
  describe described_class::Contract, type: :model do
    it { is_expected.to validate_presence_of(:id) }
  end

  describe ".call" do
    subject(:result) { described_class.call(params:, **dependencies) }

    fab!(:current_user) { Fabricate(:admin) }
    fab!(:flag)

    let(:params) { { id: flag_id } }
    let(:dependencies) { { guardian: current_user.guardian } }
    let(:flag_id) { flag.id }

    # DO NOT REMOVE: flags have side effects and their state will leak to
    # other examples otherwise.
    after { flag.destroy! }

    context "when data is invalid" do
      let(:flag_id) { nil }

      it { is_expected.to fail_a_contract }
    end

    context "when model is not found" do
      let(:flag_id) { 0 }

      it { is_expected.to fail_to_find_a_model(:flag) }
    end

    context "when the flag is a system one" do
      let(:flag) { Flag.first }

      it { is_expected.to fail_a_policy(:not_system) }
    end

    context "when the flag has been used" do
      let!(:post_action) { Fabricate(:post_action, post_action_type_id: flag.id) }

      it { is_expected.to fail_a_policy(:not_used) }
    end

    context "when user is not allowed to perform the action" do
      fab!(:current_user) { Fabricate(:user) }

      it { is_expected.to fail_a_policy(:invalid_access) }
    end

    context "when everything's ok" do
      it { is_expected.to run_successfully }

      it "destroys the flag" do
        expect { result }.to change { Flag.where(id: flag).count }.by(-1)
      end

      it "logs the action" do
        expect { result }.to change { UserHistory.count }.by(1)
        expect(UserHistory.last).to have_attributes(
          custom_type: "delete_flag",
          details:
            "name: offtopic\ndescription: \napplies_to: [\"Post\", \"Chat::Message\"]\nenabled: true",
        )
      end
    end
  end
end