defmodule MvWeb.MemberLive.IndexTest do
  use MvWeb.ConnCase, async: true
  import Phoenix.LiveViewTest
  require Ash.Query

  test "shows translated title in German", %{conn: conn} do
    conn = conn_with_oidc_user(conn)
    conn = Plug.Test.init_test_session(conn, locale: "de")
    {:ok, _view, html} = live(conn, "/members")
    # Expected German title
    assert html =~ "Mitglieder"
  end

  test "shows translated title in English", %{conn: conn} do
    conn = conn_with_oidc_user(conn)
    Gettext.put_locale(MvWeb.Gettext, "en")
    {:ok, _view, html} = live(conn, "/members")
    # Expected English title
    assert html =~ "Members"
  end

  test "shows translated button text in German", %{conn: conn} do
    conn = conn_with_oidc_user(conn)
    conn = Plug.Test.init_test_session(conn, locale: "de")
    {:ok, _view, html} = live(conn, "/members/new")
    assert html =~ "Speichern"
  end

  test "shows translated button text in English", %{conn: conn} do
    conn = conn_with_oidc_user(conn)
    Gettext.put_locale(MvWeb.Gettext, "en")
    {:ok, _view, html} = live(conn, "/members/new")
    assert html =~ "Save"
  end

  test "shows translated flash message after creating a member in German", %{conn: conn} do
    conn = conn_with_oidc_user(conn)
    conn = Plug.Test.init_test_session(conn, locale: "de")
    {:ok, form_view, _html} = live(conn, "/members/new")

    form_data = %{
      "member[first_name]" => "Max",
      "member[last_name]" => "Mustermann",
      "member[email]" => "max@example.com"
    }

    # Submit form and follow the redirect to get the flash message
    {:ok, index_view, _html} =
      form_view
      |> form("#member-form", form_data)
      |> render_submit()
      |> follow_redirect(conn, "/members")

    assert has_element?(index_view, "#flash-group", "Mitglied wurde erfolgreich erstellt")
  end

  test "shows translated flash message after creating a member in English", %{conn: conn} do
    conn = conn_with_oidc_user(conn)
    {:ok, form_view, _html} = live(conn, "/members/new")

    form_data = %{
      "member[first_name]" => "Max",
      "member[last_name]" => "Mustermann",
      "member[email]" => "max@example.com"
    }

    # Submit form and follow the redirect to get the flash message
    {:ok, index_view, _html} =
      form_view
      |> form("#member-form", form_data)
      |> render_submit()
      |> follow_redirect(conn, "/members")

    assert has_element?(index_view, "#flash-group", "Member created successfully")
  end

  describe "sorting integration" do
    test "clicking a column header toggles sort order and updates the URL", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members")

      # The component data test ids are built with the name of the field
      # First click – should sort ASC
      view
      |> element("[data-testid='email']")
      |> render_click()

      # The LiveView pushes a patch with the new query params
      assert_patch(view, "/members?query=&sort_field=email&sort_order=asc")

      # Second click – toggles to DESC
      view
      |> element("[data-testid='email']")
      |> render_click()

      assert_patch(view, "/members?query=&sort_field=email&sort_order=desc")
    end

    test "clicking different column header resets order to ascending", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members?sort_field=email&sort_order=desc")

      # Click on a different column
      view
      |> element("[data-testid='first_name']")
      |> render_click()

      assert_patch(view, "/members?query=&sort_field=first_name&sort_order=asc")
    end

    test "all sortable columns work correctly", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members")

      # default ascending sorting with first name
      assert has_element?(view, "[data-testid='first_name'][aria-label='ascending']")

      sortable_fields = [
        :email,
        :street,
        :house_number,
        :postal_code,
        :city,
        :phone_number,
        :join_date
      ]

      for field <- sortable_fields do
        view
        |> element("[data-testid='#{field}']")
        |> render_click()

        assert_patch(view, "/members?query=&sort_field=#{field}&sort_order=asc")
      end
    end

    test "sorting works with search query", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members?query=test")

      view
      |> element("[data-testid='email']")
      |> render_click()

      assert_patch(view, "/members?query=test&sort_field=email&sort_order=asc")
    end

    test "sorting maintains search query when toggling order", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members?query=test&sort_field=email&sort_order=asc")

      view
      |> element("[data-testid='email']")
      |> render_click()

      assert_patch(view, "/members?query=test&sort_field=email&sort_order=desc")
    end
  end

  describe "URL param handling" do
    test "handle_params reads sort query and applies it", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members?query=&sort_field=email&sort_order=desc")

      # Check that the sort state is correctly applied
      assert has_element?(view, "[data-testid='email'][aria-label='descending']")
    end

    test "handle_params handles invalid sort field gracefully", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members?query=&sort_field=invalid_field&sort_order=asc")

      # Should not crash and should show default first name order
      assert has_element?(view, "[data-testid='first_name'][aria-label='ascending']")
    end

    test "handle_params preserves search query with sort params", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members?query=test&sort_field=email&sort_order=desc")

      # Both search and sort should be preserved
      assert has_element?(view, "[data-testid='email'][aria-label='descending']")
    end
  end

  describe "search and sort integration" do
    test "search maintains sort state", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members?query=&sort_field=email&sort_order=desc")

      # Perform search
      view
      |> element("[data-testid='search-input']")
      |> render_change(%{value: "test"})

      # Sort state should be maintained
      assert has_element?(view, "[data-testid='email'][aria-label='descending']")
    end

    test "sort maintains search state", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members?query=test&sort_field=email&sort_order=asc")

      # Perform sort
      view
      |> element("[data-testid='email']")
      |> render_click()

      # Search state should be maintained
      assert_patch(view, "/members?query=test&sort_field=email&sort_order=desc")
    end
  end

  test "handle_info(:search_changed) updates assigns with search results", %{conn: conn} do
    conn = conn_with_oidc_user(conn)
    {:ok, view, _html} = live(conn, "/members")

    send(view.pid, {:search_changed, "Friedrich"})

    state = :sys.get_state(view.pid)

    assert state.socket.assigns.query == "Friedrich"
    assert is_list(state.socket.assigns.members)
  end

  test "can delete a member without error", %{conn: conn} do
    # Create a test member first
    {:ok, member} =
      Mv.Membership.create_member(%{
        first_name: "Test",
        last_name: "User",
        email: "test@example.com"
      })

    conn = conn_with_oidc_user(conn)
    {:ok, index_view, _html} = live(conn, "/members")

    # Verify the member is displayed
    assert has_element?(index_view, "#members", "Test User")

    # Click the delete link for this member
    index_view
    |> element("a", "Delete")
    |> render_click()

    # Verify the member is no longer displayed
    refute has_element?(index_view, "#members", "Test User")

    # Verify the member was actually deleted from the database
    assert not (Mv.Membership.Member |> Ash.Query.filter(id == ^member.id) |> Ash.exists?())
  end

  describe "copy_emails feature" do
    setup do
      # Create test members
      {:ok, member1} =
        Mv.Membership.create_member(%{
          first_name: "Max",
          last_name: "Mustermann",
          email: "max@example.com"
        })

      {:ok, member2} =
        Mv.Membership.create_member(%{
          first_name: "Erika",
          last_name: "Musterfrau",
          email: "erika@example.com"
        })

      {:ok, member3} =
        Mv.Membership.create_member(%{
          first_name: "Hans",
          last_name: "Müller-Lüdenscheidt",
          email: "hans@example.com"
        })

      %{member1: member1, member2: member2, member3: member3}
    end

    test "copy_emails event formats selected members correctly", %{
      conn: conn,
      member1: member1,
      member2: member2
    } do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members")

      # Select two members by sending the select_member event directly
      render_click(view, "select_member", %{"id" => member1.id})
      render_click(view, "select_member", %{"id" => member2.id})

      # Trigger copy_emails event
      view |> element("#copy-emails-btn") |> render_click()

      # Verify flash message shows correct count
      assert render(view) =~ "2"
    end

    test "copy_emails event with no selection shows error flash", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members")

      # Trigger copy_emails event directly (button not visible when no selection)
      # This tests the edge case where event is triggered without selection
      result = render_hook(view, "copy_emails", %{})

      # Should show error flash
      assert result =~ "No members selected" or result =~ "Keine Mitglieder"
    end

    test "copy_emails event with all members selected formats all emails", %{
      conn: conn
    } do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members")

      # Select all members via select_all
      view |> element("[phx-click='select_all']") |> render_click()

      # Trigger copy_emails event
      view |> element("#copy-emails-btn") |> render_click()

      # Verify flash message shows correct count (3 members)
      assert render(view) =~ "3"
    end

    test "copy_emails handles members with special characters in names", %{
      conn: conn,
      member3: member3
    } do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members")

      # Select member with umlauts by sending the select_member event directly
      render_click(view, "select_member", %{"id" => member3.id})

      # Trigger copy_emails event - should not crash
      view |> element("#copy-emails-btn") |> render_click()

      # Verify flash message shows success
      assert render(view) =~ "1"
    end

    test "copy_emails handles case where selected member is deleted before copy", %{
      conn: conn,
      member1: member1
    } do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members")

      # Select a member by sending the select_member event directly
      render_click(view, "select_member", %{"id" => member1.id})

      # Delete the member from the database
      Ash.destroy!(member1)

      # Trigger copy_emails event directly - selection still contains the deleted ID
      # but the member is no longer in @members list after reload
      result = render_hook(view, "copy_emails", %{})

      # Should show error since no visible members match selection
      assert result =~ "No email" or result =~ "Keine E-Mail" or result =~ "0"
    end

    test "copy_emails formats emails as RFC 5322 compliant comma-separated list", %{
      conn: conn,
      member1: member1,
      member2: member2
    } do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members")

      # Select two members by sending the select_member event directly
      render_click(view, "select_member", %{"id" => member1.id})
      render_click(view, "select_member", %{"id" => member2.id})

      # Get the socket state to verify the formatted email string
      state = :sys.get_state(view.pid)
      selected_members = state.socket.assigns.selected_members

      # Verify MapSet is used
      assert %MapSet{} = selected_members
      assert MapSet.size(selected_members) == 2
    end

    test "email format is 'First Last <email>' with comma separator", %{
      conn: conn,
      member1: _member1
    } do
      # Test the format_member_email function indirectly
      # by checking the push_event payload structure
      conn = conn_with_oidc_user(conn)

      # Create a member with known data
      {:ok, test_member} =
        Mv.Membership.create_member(%{
          first_name: "Test",
          last_name: "Format",
          email: "test.format@example.com"
        })

      {:ok, view, _html} = live(conn, "/members")

      # Select the test member by sending the select_member event directly
      render_click(view, "select_member", %{"id" => test_member.id})

      # The format should be "Test Format <test.format@example.com>"
      # We verify this by checking the flash shows 1 email was copied
      view |> element("#copy-emails-btn") |> render_click()
      assert render(view) =~ "1"
    end

    test "copy button is disabled when no members selected", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members")

      # Copy button should be disabled (button element)
      assert has_element?(view, "#copy-emails-btn[disabled]")
      # Open email button should be disabled (link with tabindex and aria-disabled)
      assert has_element?(view, "#open-email-btn[tabindex='-1'][aria-disabled='true']")
    end

    test "copy button is enabled after selection", %{
      conn: conn,
      member1: member1
    } do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members")

      # Select a member by sending the select_member event directly
      render_click(view, "select_member", %{"id" => member1.id})

      # Copy button should now be enabled (no disabled attribute)
      refute has_element?(view, "#copy-emails-btn[disabled]")
      # Open email button should now be enabled (no tabindex=-1 or aria-disabled)
      refute has_element?(view, "#open-email-btn[tabindex='-1']")
      refute has_element?(view, "#open-email-btn[aria-disabled='true']")
      # Counter should show correct count
      assert render(view) =~ "1"
    end

    test "copy button click triggers event and shows flash", %{
      conn: conn,
      member1: member1
    } do
      conn = conn_with_oidc_user(conn)
      {:ok, view, _html} = live(conn, "/members")

      # Select a member by sending the select_member event directly
      render_click(view, "select_member", %{"id" => member1.id})

      # Click copy button
      view |> element("#copy-emails-btn") |> render_click()

      # Flash message should appear
      assert has_element?(view, "#flash-group")
    end
  end

  describe "cycle status filter" do
    alias Mv.MembershipFees.MembershipFeeType
    alias Mv.MembershipFees.MembershipFeeCycle

    # Helper to create a membership fee type
    defp create_fee_type(attrs) do
      default_attrs = %{
        name: "Test Fee Type #{System.unique_integer([:positive])}",
        amount: Decimal.new("50.00"),
        interval: :yearly
      }

      attrs = Map.merge(default_attrs, attrs)

      MembershipFeeType
      |> Ash.Changeset.for_create(:create, attrs)
      |> Ash.create!()
    end

    # Helper to create a member
    defp create_member(attrs) do
      default_attrs = %{
        first_name: "Test",
        last_name: "Member",
        email: "test.member.#{System.unique_integer([:positive])}@example.com"
      }

      attrs = Map.merge(default_attrs, attrs)

      Mv.Membership.Member
      |> Ash.Changeset.for_create(:create_member, attrs)
      |> Ash.create!()
    end

    # Helper to create a cycle
    defp create_cycle(member, fee_type, attrs) do
      # Delete any auto-generated cycles first to avoid conflicts
      existing_cycles =
        MembershipFeeCycle
        |> Ash.Query.filter(member_id == ^member.id)
        |> Ash.read!()

      Enum.each(existing_cycles, fn cycle -> Ash.destroy!(cycle) end)

      default_attrs = %{
        cycle_start: ~D[2023-01-01],
        amount: Decimal.new("50.00"),
        member_id: member.id,
        membership_fee_type_id: fee_type.id,
        status: :unpaid
      }

      attrs = Map.merge(default_attrs, attrs)

      MembershipFeeCycle
      |> Ash.Changeset.for_create(:create, attrs)
      |> Ash.create!()
    end

    test "filter shows only members with paid status in last cycle", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      fee_type = create_fee_type(%{interval: :yearly})
      today = Date.utc_today()
      last_year_start = Date.new!(today.year - 1, 1, 1)

      # Member with paid last cycle
      paid_member =
        create_member(%{
          first_name: "PaidLast",
          membership_fee_type_id: fee_type.id
        })

      create_cycle(paid_member, fee_type, %{cycle_start: last_year_start, status: :paid})

      # Member with unpaid last cycle
      unpaid_member =
        create_member(%{
          first_name: "UnpaidLast",
          membership_fee_type_id: fee_type.id
        })

      create_cycle(unpaid_member, fee_type, %{cycle_start: last_year_start, status: :unpaid})

      {:ok, _view, html} = live(conn, "/members?cycle_status_filter=paid")

      assert html =~ "PaidLast"
      refute html =~ "UnpaidLast"
    end

    test "filter shows only members with unpaid status in last cycle", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      fee_type = create_fee_type(%{interval: :yearly})
      today = Date.utc_today()
      last_year_start = Date.new!(today.year - 1, 1, 1)

      # Member with paid last cycle
      paid_member =
        create_member(%{
          first_name: "PaidLast",
          membership_fee_type_id: fee_type.id
        })

      create_cycle(paid_member, fee_type, %{cycle_start: last_year_start, status: :paid})

      # Member with unpaid last cycle
      unpaid_member =
        create_member(%{
          first_name: "UnpaidLast",
          membership_fee_type_id: fee_type.id
        })

      create_cycle(unpaid_member, fee_type, %{cycle_start: last_year_start, status: :unpaid})

      {:ok, _view, html} = live(conn, "/members?cycle_status_filter=unpaid")

      refute html =~ "PaidLast"
      assert html =~ "UnpaidLast"
    end

    test "filter shows only members with paid status in current cycle", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      fee_type = create_fee_type(%{interval: :yearly})
      today = Date.utc_today()
      current_year_start = Date.new!(today.year, 1, 1)

      # Member with paid current cycle
      paid_member =
        create_member(%{
          first_name: "PaidCurrent",
          membership_fee_type_id: fee_type.id
        })

      create_cycle(paid_member, fee_type, %{cycle_start: current_year_start, status: :paid})

      # Member with unpaid current cycle
      unpaid_member =
        create_member(%{
          first_name: "UnpaidCurrent",
          membership_fee_type_id: fee_type.id
        })

      create_cycle(unpaid_member, fee_type, %{cycle_start: current_year_start, status: :unpaid})

      {:ok, _view, html} = live(conn, "/members?cycle_status_filter=paid&show_current_cycle=true")

      assert html =~ "PaidCurrent"
      refute html =~ "UnpaidCurrent"
    end

    test "filter shows only members with unpaid status in current cycle", %{conn: conn} do
      conn = conn_with_oidc_user(conn)
      fee_type = create_fee_type(%{interval: :yearly})
      today = Date.utc_today()
      current_year_start = Date.new!(today.year, 1, 1)

      # Member with paid current cycle
      paid_member =
        create_member(%{
          first_name: "PaidCurrent",
          membership_fee_type_id: fee_type.id
        })

      create_cycle(paid_member, fee_type, %{cycle_start: current_year_start, status: :paid})

      # Member with unpaid current cycle
      unpaid_member =
        create_member(%{
          first_name: "UnpaidCurrent",
          membership_fee_type_id: fee_type.id
        })

      create_cycle(unpaid_member, fee_type, %{cycle_start: current_year_start, status: :unpaid})

      {:ok, _view, html} =
        live(conn, "/members?cycle_status_filter=unpaid&show_current_cycle=true")

      refute html =~ "PaidCurrent"
      assert html =~ "UnpaidCurrent"
    end

    test "toggle cycle view updates URL and preserves filter", %{conn: conn} do
      conn = conn_with_oidc_user(conn)

      # Start with last cycle view and paid filter
      {:ok, view, _html} = live(conn, "/members?cycle_status_filter=paid")

      # Toggle to current cycle - this should update URL and preserve filter
      # Use the button in the membership fee status column header
      view
      |> element("button[phx-click='toggle_cycle_view'].btn-xs")
      |> render_click()

      # Wait for patch to complete
      path = assert_patch(view)

      # URL should contain both filter and show_current_cycle
      assert path =~ "cycle_status_filter=paid"
      assert path =~ "show_current_cycle=true"
    end
  end
end