import "package:flutter/widgets.dart";
import "package:flutter_test/flutter_test.dart";
import "package:garage_ui/garage_ui.dart";

import "support/test_scheme.dart";

Widget _host(Widget child) => Directionality(
      textDirection: TextDirection.ltr,
      child: GarageTheme(
        data: ThemeData(colorScheme: testScheme, density: const Density()),
        child: Align(
          alignment: Alignment.topLeft,
          child: SizedBox(width: 400, child: child),
        ),
      ),
    );

void main() {
  testWidgets("rules go between entries, not around them", (tester) async {
    await tester.pumpWidget(
      _host(
        SettingsList(
          children: [
            SettingsRow(label: "Full name", field: const Text("Benjamin")),
            SettingsRow(label: "Nickname", field: const Text("Benji")),
            SettingsRow(label: "Work", field: const Text("Engineering")),
          ],
        ),
      ),
    );

    // three rows, two rules - a rule above the first or below the last would
    // draw the box this exists to not be
    expect(find.byType(Divider), findsNWidgets(2));
  });

  testWidgets("the rule runs wider than the rows it separates", (
    tester,
  ) async {
    await tester.pumpWidget(
      _host(
        SettingsList(
          children: [
            SettingsRow(label: "Read", field: const Text("Optional")),
            SettingsRow(label: "Change", field: const Text("Optional")),
          ],
        ),
      ),
    );

    final rule = tester.getRect(find.byType(Divider));
    final row = tester.getRect(find.byType(SettingsRow).first);

    // overshoots at both ends - a rule that stops where its content stops
    // reads as the edge of a box rather than a divider
    expect(rule.left, lessThan(row.left));
    expect(rule.right, greaterThan(row.right));
  });

  testWidgets("one entry has no rule at all", (tester) async {
    await tester.pumpWidget(
      _host(
        SettingsList(
          children: [
            SettingsRow(label: "Full name", field: const Text("Benjamin")),
          ],
        ),
      ),
    );
    expect(find.byType(Divider), findsNothing);
  });

  testWidgets("label takes the room the field doesnt", (tester) async {
    await tester.pumpWidget(
      _host(
        SettingsList(
          children: [
            SettingsRow(
              label: "What best describes your work?",
              field: const SizedBox(width: 120, height: 20),
            ),
          ],
        ),
      ),
    );

    final label = tester.getRect(find.text("What best describes your work?"));
    final field = tester.getRect(find.byType(SizedBox).last);
    final row = tester.getRect(find.byType(SettingsRow));

    // label on the left, field hard against the right edge - not floating in
    // the middle at the left of its own share of the row
    expect(label.left, lessThan(field.left));
    expect(field.width, 120);
    expect(field.right, closeTo(row.right, 1));
    expect(tester.takeException(), isNull);
  });

  testWidgets("a field with flex children inside it doesnt assert", (
    tester,
  ) async {
    // the field slot is bounded, not unbounded - a ButtonGroup with `fill`,
    // or anything else holding an Expanded, needs a width to divide up.
    await tester.pumpWidget(
      _host(
        SettingsList(
          children: [
            SettingsRow(
              label: "Read",
              field: ButtonGroup.horizontal(
                fill: true,
                children: [
                  Button(
                    style: const ButtonStyle.outline(),
                    onPressed: () {},
                    child: const Text("Off"),
                  ),
                  Button(
                    style: const ButtonStyle.outline(),
                    onPressed: () {},
                    child: const Text("Required"),
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );

    expect(tester.takeException(), isNull);
  });

  testWidgets("a long label doesnt push the field off the row", (
    tester,
  ) async {
    await tester.pumpWidget(
      _host(
        SettingsList(
          children: [
            SettingsRow(
              label: "See your account, passkeys and sign-in activity, and "
                  "everything else besides",
              field: const SizedBox(width: 120, height: 20),
            ),
          ],
        ),
      ),
    );

    expect(tester.takeException(), isNull);
    expect(tester.getSize(find.byType(SizedBox).last).width, 120);
  });
}