// Approvals origin block — a reviewer must be able to see WHERE a
// pending approval comes from (which flow, step, run, project, and
// when it was requested) and WHAT approve / reject will do, without
// leaving the card. The run id in particular used to be dropped at
// the Dart mapping layer; this pins that it reaches the card, next
// to the rest of the origin facts and the plain-language intro.
//
// Runs against the scriptable FakeHubService — never a real hub.

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:shared_preferences/shared_preferences.dart';

import 'package:chain_studio/data/hub.dart';
import 'package:chain_studio/main.dart';

import 'support/fake_hub.dart';

/// Every rendered Text + SelectableText joined — the run id is a
/// SelectableText (copyable), so a Text-only sweep would miss it.
String _allText(WidgetTester tester) {
  final buf = StringBuffer();
  for (final w in tester.widgetList<Text>(find.byType(Text))) {
    buf.writeln(w.data ?? w.textSpan?.toPlainText() ?? '');
  }
  for (final w in tester.widgetList<SelectableText>(
    find.byType(SelectableText),
  )) {
    buf.writeln(w.data ?? '');
  }
  return buf.toString();
}

void main() {
  testWidgets('a pending approval card shows its full origin and an '
      'intro explaining approve / reject', (tester) async {
    final fake = installFakeHub();
    fake.approvals = [
      ApprovalRecord(
        id: 'apr-1',
        flowName: 'classify-and-file',
        stepId: 'review',
        prompt: 'Bitte die Klassifikation prüfen',
        payloadPreview: '{"label":"Rechnung"}',
        createdAt: DateTime.utc(2026, 7, 26, 12, 0, 0),
        expiresAt: null,
        status: 'pending',
        decidedAt: null,
        decidedBy: '',
        reason: '',
        project: 'lbs',
        flowExecution: 'run-abc123',
      ),
    ];

    SharedPreferences.setMockInitialValues({});
    tester.view.physicalSize = const Size(1280, 900);
    tester.view.devicePixelRatio = 1.0;
    addTearDown(tester.view.reset);

    await tester.pumpWidget(
      const StudioApp(
        initialThemeMode: ThemeModeValue.dark,
        initialLocale: Locale('de'),
      ),
    );
    await tester.pump(const Duration(milliseconds: 100));
    await tester.tap(find.byKey(const ValueKey('sidebar-item-approvals')));
    for (var i = 0; i < 12; i++) {
      await tester.pump(const Duration(milliseconds: 200));
    }

    final text = _allText(tester);
    // The human question (headline).
    expect(text, contains('Bitte die Klassifikation prüfen'));
    // The origin block — every fact a reviewer needs to place it.
    expect(text, contains('HERKUNFT'));
    expect(text, contains('Flow: classify-and-file'));
    expect(text, contains('Schritt: review'));
    expect(text, contains('Projekt: lbs'));
    expect(text, contains('Angefordert:'));
    // The run id — the field that used to be dropped at the mapping.
    expect(text, contains('Lauf: run-abc123'));
    // The intro strip says what this inbox is and what the actions do.
    expect(text, contains('pausierte Flows'));

    await tester.pumpWidget(const SizedBox.shrink());
    await tester.pump(const Duration(minutes: 1));
  });
}