defmodule ToweropsWeb.Api.V1.InvitationsControllerTest do
  use ToweropsWeb.ConnCase, async: true

  import Towerops.AccountsFixtures
  import Towerops.OrganizationsFixtures

  alias Towerops.ApiTokens
  alias Towerops.Organizations

  setup do
    user = user_fixture()
    organization = organization_fixture(user.id)

    {:ok, {_token, raw_token}} =
      ApiTokens.create_api_token(%{
        organization_id: organization.id,
        user_id: user.id,
        name: "Test Token"
      })

    conn =
      build_conn()
      |> put_req_header("authorization", "Bearer #{raw_token}")
      |> put_req_header("accept", "application/json")

    %{conn: conn, user: user, organization: organization}
  end

  defp create_test_invitation(organization, user, email \\ "invited@example.com") do
    {:ok, invitation} =
      Organizations.create_invitation(%{
        organization_id: organization.id,
        email: email,
        role: :technician,
        invited_by_id: user.id,
        token: Ecto.UUID.generate(),
        expires_at: DateTime.utc_now() |> DateTime.add(7 * 86_400, :second) |> DateTime.truncate(:second)
      })

    invitation
  end

  describe "index/2" do
    test "lists pending invitations", %{
      conn: conn,
      organization: organization,
      user: user
    } do
      invitation = create_test_invitation(organization, user)

      conn = get(conn, ~p"/api/v1/invitations")

      assert %{"data" => invitations} = json_response(conn, 200)
      assert length(invitations) == 1

      inv = List.first(invitations)
      assert inv["id"] == invitation.id
      assert inv["email"] == "invited@example.com"
      assert inv["role"] == "technician"
      assert Map.has_key?(inv, "expires_at")
      assert Map.has_key?(inv, "invited_by_email")
      assert Map.has_key?(inv, "inserted_at")
    end

    test "returns empty list when no invitations exist", %{conn: conn} do
      conn = get(conn, ~p"/api/v1/invitations")

      assert %{"data" => []} = json_response(conn, 200)
    end
  end

  describe "create/2" do
    test "creates invitation", %{conn: conn} do
      params = %{
        "email" => "newuser@example.com",
        "role" => "technician"
      }

      conn = post(conn, ~p"/api/v1/invitations", params)

      assert %{"data" => data} = json_response(conn, 201)
      assert data["email"] == "newuser@example.com"
      assert data["role"] == "technician"
      assert Map.has_key?(data, "id")
      assert Map.has_key?(data, "expires_at")
      assert Map.has_key?(data, "inserted_at")
    end

    test "returns 400 without required params", %{conn: conn} do
      conn = post(conn, ~p"/api/v1/invitations", %{})

      assert %{"error" => "Missing 'email' and 'role' parameters"} = json_response(conn, 400)
    end
  end

  describe "delete/2" do
    test "removes invitation", %{conn: conn, organization: organization, user: user} do
      invitation = create_test_invitation(organization, user)

      conn = delete(conn, ~p"/api/v1/invitations/#{invitation.id}")

      assert response(conn, 204)
    end

    test "returns 404 for invitation in different organization", %{conn: conn} do
      other_user = user_fixture()
      other_org = organization_fixture(other_user.id)
      invitation = create_test_invitation(other_org, other_user, "other@example.com")

      conn = delete(conn, ~p"/api/v1/invitations/#{invitation.id}")

      assert %{"error" => "Invitation not found"} = json_response(conn, 404)
    end

    test "returns 404 for non-existent invitation", %{conn: conn} do
      fake_id = Ecto.UUID.generate()

      conn = delete(conn, ~p"/api/v1/invitations/#{fake_id}")

      assert %{"error" => "Invitation not found"} = json_response(conn, 404)
    end
  end

  describe "authentication" do
    test "returns 401 without authorization header" do
      conn =
        build_conn()
        |> put_req_header("accept", "application/json")
        |> get(~p"/api/v1/invitations")

      assert %{"error" => _message} = json_response(conn, 401)
    end

    test "returns 401 with invalid token" do
      conn =
        build_conn()
        |> put_req_header("authorization", "Bearer towerops_invalid_token")
        |> put_req_header("accept", "application/json")
        |> get(~p"/api/v1/invitations")

      assert %{"error" => _message} = json_response(conn, 401)
    end
  end
end