import 'package:doormile_cx/data/app_config.dart';
import 'package:doormile_cx/data/location_service.dart';
import 'package:doormile_cx/main.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:integration_test/integration_test.dart';

/// Proves that a build carrying a real token reaches a real, authenticated
/// booking screen — on a device, against the real backend.
///
/// ── Why this file shrank ──
///
/// It used to walk the whole booking: sign in with `9876543210` and four 1s,
/// then pickup → destination → window → review → confirmation. Both halves of
/// that stopped being true.
///
///   * **The sign-in** only ever worked under the offline `DM_MOCK` build,
///     deleted on 15 Sep 2026 after it cost two rounds of hunting for bookings
///     in the admin console that had never left the phone. There is no longer a
///     four-digit code that signs anybody in.
///   * **The flow** was rebuilt into ONE screen plus two sheets. There is no
///     "Where are you sending it?" page, no "When should we come?" page and no
///     review page left to walk; the city is a horizontal strip and the window
///     is a modal sheet.
///
/// So every finder in it referred to something that no longer exists, and it
/// could not pass. What replaces it is deliberately narrower than what it
/// claimed to do, and everything in it has been checked against the current
/// screens rather than remembered.
///
/// **What this asserts:** the app adopts a server-issued token through the same
/// session store a normal login writes to, asks the backend who that is, opens
/// the real Home, and reaches a booking screen whose empty-draft state is
/// rendered from live serviceability. Every call in that chain is a real call.
///
/// **What it does not assert:** the booking itself. Completing it needs a city
/// tapped out of a server-loaded strip and a window chosen from a sheet, and a
/// test that guesses at those without ever having run is worth less than an
/// honest gap. Do that part by hand on the device — the button tells you where
/// you are, in this order:
///
///     "Pick a city to see the price"  →  "Choose a pickup window"  →  "Book pickup"
///
/// Run it:
///
///     flutter test integration_test/book_one_test.dart \
///       -d <device> \
///       --dart-define=DM_DEV_TOKEN=eyJ...
void main() {
  IntegrationTestWidgetsFlutterBinding.ensureInitialized();

  testWidgets('a real token opens a real, authenticated booking screen',
      (tester) async {
    // ── Skip rather than fail confusingly ──
    //
    // With no token the app correctly opens the login screen, and every finder
    // below would fail on a missing widget — which reads as "the app is broken"
    // when the truth is "this run was given no identity". Say the missing thing
    // by name, once.
    if (!AppConfig.authBypassed) {
      markTestSkipped(
        'No DM_DEV_TOKEN (or DM_LOGIN_AS) — this test runs against the real '
        'backend and needs a real session. Pass '
        '--dart-define=DM_DEV_TOKEN=<server-issued token>.',
      );
      return;
    }

    // Deterministic pin, so the pickup row never stops on an OS location dialog
    // and resolves the same way every run.
    LocationService.instance = FixedLocationService();

    await tester.pumpWidget(const DoormileApp());

    // The app runs continuous animations, so pumpAndSettle never returns. Pump
    // fixed slices instead.
    Future<void> hold([int ms = 900]) async {
      await tester.pump();
      await tester.pump(Duration(milliseconds: ms));
      await tester.pump(const Duration(milliseconds: 400));
    }

    // Longer than the other holds on purpose: this is two network calls — the
    // token is adopted into the session store, then `GET /customer/auth/me` is
    // asked who it belongs to — and against a real server they are not instant.
    await hold(4000);

    expect(
      find.text('Where should we pick up?'),
      findsOneWidget,
      reason: 'the app did not reach Home. A token that is expired or revoked '
          'lands on the login screen by design — that is the session being '
          'refused, not a bug in the app.',
    );
    debugPrint('DRIVER: real session restored from DM_DEV_TOKEN, on Home');

    await tester.tap(find.text('BOOK'));
    await hold(2500);

    expect(find.text('Send a parcel'), findsOneWidget);

    // The empty-draft state, in the button's own words. Reaching this proves
    // the screen built against live serviceability rather than a fixture: the
    // city strip is an async list off the server, and this is the label the
    // screen shows while nothing in it is selected.
    expect(
      find.text('Pick a city to see the price'),
      findsOneWidget,
      reason: 'the booking screen did not reach its empty-draft state',
    );
    debugPrint('DRIVER: on the booking screen, awaiting a city — '
        'finish by hand from here');
  });
}