import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:miler/views/Dashboard/home/trip.dart';
import 'package:miler/views/Dashboard/home/trip_brief_strip.dart';
import 'package:miler/views/Dashboard/home/trip_card.dart';

/// ─────────────────────────────────────────────────────────────────────────
/// The trip brief and the hub row have to survive every phone and every
/// accessibility text size.
///
/// This exists because both of them broke in exactly that way while being
/// written. Putting "VIEW ROUTE" on the START · HUB row overflowed the row by
/// 6.2px at the design width — a `Row` of two natural-width children with a
/// `Spacer` between them has no give at all, and the failure only appears once
/// the two happen to be too wide together. The brief has the same shape of risk
/// in two places: four figures sharing one row, and a value like `₹1,23,456`
/// that is far wider than the `₹450` anyone tests with by hand.
///
/// So this sweeps the four widths the app actually ships to against the text
/// scales Android exposes in Settings, and asserts only one thing: nothing
/// throws. Overflow in Flutter is a layout *exception*, so that single
/// assertion catches all of it.
/// ─────────────────────────────────────────────────────────────────────────
void main() {
  /// 320 is the narrowest Android phone still in the field; 430 is a Pro Max.
  const widths = [320.0, 360.0, 390.0, 430.0];

  /// 2.0 is the top of Android's font-size slider.
  const textScales = [1.0, 1.3, 1.5, 2.0];

  /// A worst-case trip: six stops, and a cash figure with enough digits to
  /// stress the narrowest of the four figure columns.
  Trip bigTrip() => Trip.fromStops(
    id: 't1',
    stops: [
      for (var i = 0; i < 6; i++)
        {
          'orderid': 'S$i',
          'type': 'pickup',
          'pickupcustomer': 'Sri Balaji Stores',
          'pickupaddress': '19, Thadagam Road, Venkitapuram, Coimbatore',
          'Quantity': '3',
          'collectionamt': '123456',
          'expected_pickup_time': DateTime.now().toIso8601String(),
        },
    ],
  );

  for (final width in widths) {
    for (final scale in textScales) {
      testWidgets('lays out at ${width.toInt()}pt / ${scale}x', (tester) async {
        tester.view.physicalSize = Size(width * 3, 844 * 3);
        tester.view.devicePixelRatio = 3.0;
        addTearDown(tester.view.resetPhysicalSize);
        addTearDown(tester.view.resetDevicePixelRatio);

        await tester.pumpWidget(
          ScreenUtilInit(
            designSize: const Size(390, 844),
            builder: (_, _) => MaterialApp(
              home: MediaQuery(
                data: MediaQueryData(textScaler: TextScaler.linear(scale)),
                child: Scaffold(
                  body: SingleChildScrollView(
                    child: TripCard(
                      trip: bigTrip(),
                      // Supplied, so the hub row carries VIEW ROUTE — the
                      // element that overflowed.
                      onViewRoute: () {},
                    ),
                  ),
                ),
              ),
            ),
          ),
        );
        await tester.pumpAndSettle();
        expect(
          tester.takeException(),
          isNull,
          reason: 'collapsed brief overflowed at ${width}pt / ${scale}x',
        );

        expect(
          tester.takeException(),
          isNull,
          reason: 'open brief overflowed at ${width}pt / ${scale}x',
        );
      });
    }
  }
}