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/views/Dashboard/activity/activity_page.dart';
import 'package:miler/views/Dashboard/home/homepage.dart';
import 'package:miler/views/Dashboard/profile/Profilepage.dart';
import 'package:miler/views/helpers/constants/Colorconstants.dart';

/// ── A day's work is a list, not a stack of cards ──
///
/// Every finished stop was a filled, rounded card with 12pt of air under it,
/// and inside each one a *second*, white panel holding the three figures. So the
/// page came down the screen as grey slabs with white slabs punched into them —
/// the card-inside-card shape, repeated once per stop — and on top of that every
/// row opened with a 40pt green disc that was identical on all of them.
///
/// Finished stops are all the same kind of thing, arriving in one order, read by
/// scanning down. That is a list, and a list is separated by rules.
void main() {
  String day(DateTime t) =>
      '${t.year}-${t.month.toString().padLeft(2, '0')}-'
      '${t.day.toString().padLeft(2, '0')}';

  Map<String, dynamic> finished(
    String id,
    String name,
    String address, {
    required String type,
    double cash = 0,
    int minsAgo = 30,
  }) {
    final now = DateTime.now();
    final at = now.subtract(Duration(minutes: minsAgo));
    return {
      'orderid': id,
      'type': type,
      'pickupcustomer': name,
      'pickupaddress': address,
      'orderstatus': 'picked',
      'completedday': day(now),
      'completedat': at.toIso8601String(),
      'startedat': at.subtract(const Duration(minutes: 14)).toIso8601String(),
      if (cash > 0) 'collectionamt': '$cash',
      'proof': {if (cash > 0) 'amountcollected': cash},
    };
  }

  Future<void> pumpActivity(WidgetTester tester) async {
    SharedPreferences.setMockInitialValues({
      'userId': 1,
      'completed_bookings': jsonEncode([
        finished(
          'DM240817',
          'Sundar Textiles',
          '78, Cross Cut Road, Gandhipuram, Coimbatore',
          type: 'combined',
          cash: 2450,
          minsAgo: 22,
        ),
        finished(
          'DM240816',
          'Green Leaf Grocers',
          '29, Kovaipudur Main Road, Coimbatore',
          type: 'delivery',
          minsAgo: 68,
        ),
      ]),
    });

    tester.view.physicalSize = const Size(390 * 3, 844 * 3);
    tester.view.devicePixelRatio = 3.0;
    addTearDown(tester.view.reset);

    await tester.pumpWidget(
      ScreenUtilInit(
        designSize: const Size(390, 844),
        builder: (_, _) => const MaterialApp(home: ActivityPage()),
      ),
    );
    await tester.pumpAndSettle(const Duration(seconds: 2));
  }

  testWidgets('a finished stop is not a card', (tester) async {
    await pumpActivity(tester);
    expect(find.text('Sundar Textiles'), findsOneWidget);

    // `cardSurface` was the row fill and `pureSurface` the fill of the figure
    // panel nested inside it. Neither may come back: on a white page a filled
    // row is a box round a list item, and a filled panel inside a filled row is
    // the shape this page was rebuilt to remove.
    final fills = tester
        .widgetList<Container>(find.byType(Container))
        .map((c) => c.decoration)
        .whereType<BoxDecoration>()
        .map((d) => d.color)
        .toList();

    expect(fills, isNot(contains(ColorConstants.cardSurface)));
  });

  testWidgets('the figures line up across rows, not just within one', (
    tester,
  ) async {
    await pumpActivity(tester);

    // The point of three fixed columns is comparing one stop against the next.
    // While every row sat in its own padded card that only held *inside* a row;
    // sharing the page margin is what makes column two of one stop sit directly
    // above column two of the one below.
    final captions = tester.widgetList<Text>(find.text('COLLECTED')).toList();
    expect(captions.length, 2);

    final rects = [
      for (var i = 0; i < 2; i++) tester.getRect(find.text('COLLECTED').at(i)),
    ];
    expect(rects[0].left, closeTo(rects[1].left, 0.5));

    // Column one starts flush with the stop name above it — no card inset.
    final time = tester.getRect(find.text('TIME').first);
    final name = tester.getRect(find.text('Sundar Textiles'));
    expect(time.left, closeTo(name.left, 0.5));
  });

  testWidgets('the stop type is a dotted word, not a filled tag', (
    tester,
  ) async {
    await pumpActivity(tester);

    // Two tinted rectangles under every address — the type and the order id —
    // were the loudest things on a row whose subject is the figures below them.
    expect(find.text('Pickup & Delivery'), findsOneWidget);
    // `P&D` is `chipLabel`, which only ever reached this page through the
    // filled tag. (`badgeLabel` still appears inside the collapsed detail,
    // which `AnimatedCrossFade` builds either way — that one is a field value,
    // not a mark.)
    expect(find.text('P&D'), findsNothing);

    final label = tester.widget<Text>(find.text('Pickup & Delivery'));
    expect(label.style!.color, ColorConstants.combinedAccent);

    // The reference stays copyable, in grey, without claiming any rank.
    final id = tester.widget<Text>(find.text('#DM240817'));
    expect(id.style!.color, ColorConstants.secondaryText);
  });

  testWidgets('column captions are readable, not disabled-grey', (
    tester,
  ) async {
    await pumpActivity(tester);

    // #C7C7CC is a disabled-control colour. It measured about 1.9:1 on the
    // white page, which made the three words naming the columns the least
    // readable text on a screen used outdoors.
    for (final caption in const ['TIME', 'RIDDEN', 'COLLECTED']) {
      final text = tester.widget<Text>(find.text(caption).first);
      expect(text.style!.color, ColorConstants.secondaryText);
      expect(text.style!.color, isNot(ColorConstants.disabledFill));
    }
  });

  testWidgets('the four tabs agree on what colour the paper is', (
    tester,
  ) async {
    // Account was on `surface` (#FCF9F8, a warm off-white) while Home and
    // Activity were on `pureSurface`. Bookings hides its background under
    // cards; Account is bare rows, so the whole tab read a shade dirtier.
    Color? bgOf(Widget page) {
      final scaffolds = <Scaffold>[];
      void visit(Element e) {
        final w = e.widget;
        if (w is Scaffold) scaffolds.add(w);
        e.visitChildren(visit);
      }

      WidgetsBinding.instance.rootElement!.visitChildren(visit);
      return scaffolds.isEmpty ? null : scaffolds.first.backgroundColor;
    }

    SharedPreferences.setMockInitialValues({'userId': 1});
    tester.view.physicalSize = const Size(390 * 3, 844 * 3);
    tester.view.devicePixelRatio = 3.0;
    addTearDown(tester.view.reset);

    for (final page in <Widget>[const ActivityPage(), const ProfilePage()]) {
      await tester.pumpWidget(
        ScreenUtilInit(
          designSize: const Size(390, 844),
          builder: (_, _) => MaterialApp(home: page),
        ),
      );
      await tester.pump();
      expect(bgOf(page), ColorConstants.pureSurface);
    }
  });
}