import 'dart:convert';

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

import 'package:miler/data/service_profile.dart';
import 'package:miler/views/Dashboard/activity/activity_page.dart';
import 'package:miler/views/Dashboard/activity/delivery_details_page.dart';
import 'package:miler/data/accepted_store.dart';

/// ─────────────────────────────────────────────────────────────────────────
/// ACTIVITY AND THE RECORD, ACROSS THE PHONES THIS SHIPS TO
///
/// `trip_brief_layout_test` does this for Home and is the reason Home's
/// overflows get caught; the history half of the app had no equivalent, so a
/// row that fits a 390pt reference device was the only thing anyone checked.
///
/// Both screens changed in the same pass — the Activity row lost its footer
/// band and gained the reference on its measurements line, and the record's
/// Route section now hangs an address on *each* end — and both changes put more
/// on a line rather than less. That is exactly the shape of edit that overflows
/// a narrow phone, so it is the shape that needs a sweep.
///
/// One assertion only: **nothing throws.** A `RenderFlex` overflow is an
/// exception in a test binding, and this is the cheapest honest way to ask
/// "does it fit?" across a matrix without pinning pixel values that legitimate
/// design changes would have to churn.
/// ─────────────────────────────────────────────────────────────────────────
void main() {
  /// The four the brief names. 320 is the narrowest Android still in the
  /// field; 412 is a Pixel-class device and was in none of the app's existing
  /// sweeps.
  const widths = [320.0, 375.0, 390.0, 412.0];

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

  final today = DateTime.now();
  final at = DateTime(today.year, today.month, today.day, 11, 42);

  /// A worst case on purpose: a long customer name, a long kitchen name, a
  /// 21-character booking reference and a cash figure — every field that
  /// competes for the same line, all at once.
  Map<String, dynamic> record(String id) => {
    'orderid': id,
    'bookingno': id,
    'type': 'delivery',
    'pickupcustomer': 'Venkataraman Subramanian',
    'name': 'Venkataraman Subramanian',
    'sourcename': 'DailyGrubs RS Puram Central Kitchen',
    'kitchenname': 'DailyGrubs RS Puram Central Kitchen',
    'pickupaddress': '4 Cross, RS Puram, Coimbatore 641002',
    'dropaddress': '12, SNS Colony, Peelamedu, Coimbatore 641004',
    'deliveryaddress': '12, SNS Colony, Peelamedu, Coimbatore 641004',
    'orderstatus': 'delivered',
    'completedday':
        '${at.year}-${at.month.toString().padLeft(2, '0')}-'
        '${at.day.toString().padLeft(2, '0')}',
    'completedat': at.toIso8601String(),
    'startedat': at.subtract(const Duration(minutes: 87)).toIso8601String(),
    'arrivedat': at.subtract(const Duration(minutes: 5)).toIso8601String(),
    'kms': '14.6',
    'collectionamt': '123456',
    'proof': {'collected': 2, 'amountcollected': 123456.0},
  };

  setUp(() => ServiceProfile.setActive(ServiceProfile.milkMan));
  tearDown(() => ServiceProfile.setActive(ServiceProfile.parcel));

  Future<void> sized(
    WidgetTester tester,
    double width,
    double scale,
    Widget child, {
    double height = 844,
  }) async {
    tester.view.physicalSize = Size(width * 3, height * 3);
    tester.view.devicePixelRatio = 3.0;
    addTearDown(tester.view.reset);

    await tester.pumpWidget(
      ScreenUtilInit(
        designSize: const Size(390, 844),
        builder: (_, _) => MaterialApp(
          home: MediaQuery(
            data: MediaQueryData(textScaler: TextScaler.linear(scale)),
            child: child,
          ),
        ),
      ),
    );
    await tester.pumpAndSettle(const Duration(seconds: 2));
  }

  for (final width in widths) {
    for (final scale in textScales) {
      testWidgets('the activity list fits ${width.toInt()}pt / ${scale}x', (
        tester,
      ) async {
        SharedPreferences.setMockInitialValues({'userId': 1, 'userid': 1});
        await debugSeedStore(
          'completed_bookings',
          jsonEncode([
            record('DM-BK-16DA518D-6381'),
            record('DM-BK-16DA518D-6382'),
          ]),
        );

        await sized(tester, width, scale, const ActivityPage());

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

      testWidgets('the delivery record fits ${width.toInt()}pt / ${scale}x', (
        tester,
      ) async {
        SharedPreferences.setMockInitialValues({'userId': 1, 'userid': 1});

        // Tall, because the record is several screens and its `ListView` is
        // lazy — a short viewport never builds the sections being swept.
        await sized(
          tester,
          width,
          scale,
          DeliveryDetailsPage(stop: record('DM-BK-16DA518D-6381')),
          height: 2600,
        );

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