// Guards for the data-provenance block in the store detail sheet.
//
// The rule it protects (docs/architecture/store-format.md): the terms
// of the material a source module fetches are separate from the
// module's own licence, and an operator must see them before the
// install button, not in a README afterwards.

import 'package:chain_studio/data/hub.dart';
import 'package:chain_studio/l10n/app_localizations.dart';
import 'package:chain_studio/pages/store.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';

Widget _host(Widget child) => MaterialApp(
      localizationsDelegates: AppLocalizations.localizationsDelegates,
      supportedLocales: AppLocalizations.supportedLocales,
      locale: const Locale('de'),
      home: Scaffold(body: SingleChildScrollView(child: child)),
    );

void main() {
  const bund = DataProvenance(
    name: 'gesetze-im-internet.de (BMJ / juris GmbH)',
    url: 'https://www.gesetze-im-internet.de/',
    license: 'Amtliches Werk (§ 5 UrhG), gemeinfrei',
    attribution: 'Quelle: gesetze-im-internet.de (Bundesministerium der Justiz)',
  );

  testWidgets('publisher, terms and attribution are all shown',
      (tester) async {
    await tester.pumpWidget(_host(const StoreDataSourceSection(source: bund)));
    await tester.pumpAndSettle();

    expect(find.text(bund.name), findsOneWidget);
    expect(find.text(bund.url), findsOneWidget);
    expect(find.text(bund.license), findsOneWidget);
    expect(find.text(bund.attribution), findsOneWidget,
        reason: 'an attribution duty must be visible before installing');
  });

  testWidgets('the attribution row is omitted when none is required',
      (tester) async {
    const noAttribution = DataProvenance(
      name: 'Vom Betreiber gepflegter Metadaten-Katalog',
      url: '',
      license: 'Katalog des Betreibers',
      attribution: '',
    );
    await tester
        .pumpWidget(_host(const StoreDataSourceSection(source: noAttribution)));
    await tester.pumpAndSettle();

    expect(find.text(noAttribution.name), findsOneWidget);
    final l = AppLocalizations.of(
      tester.element(find.byType(StoreDataSourceSection)),
    )!;
    expect(find.text(l.storeDataSourceAttribution), findsNothing,
        reason: 'an empty attribution must not render an empty row');
  });

  testWidgets('the terms are selectable so they can be copied',
      (tester) async {
    await tester.pumpWidget(_host(const StoreDataSourceSection(source: bund)));
    await tester.pumpAndSettle();

    // Compliance notes get written by copying, not retyping.
    expect(
      find.byWidgetPredicate(
        (w) => w is SelectableText && w.data == bund.attribution,
      ),
      findsOneWidget,
    );
  });

  testWidgets('the note says whose terms these are', (tester) async {
    await tester.pumpWidget(_host(const StoreDataSourceSection(source: bund)));
    await tester.pumpAndSettle();

    final l = AppLocalizations.of(
      tester.element(find.byType(StoreDataSourceSection)),
    )!;
    // Without this line an operator reads the terms as the module's.
    expect(find.text(l.storeDataSourceNote), findsOneWidget);
  });
}