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

import 'package:miler/data/service_profile.dart';
import 'package:miler/views/Dashboard/home/route_timeline.dart';
import 'package:miler/views/Dashboard/home/trip.dart';
import 'package:miler/views/Dashboard/home/trip_card.dart';

/// A control a rider reaches for without looking has to be in the same place on
/// every row of the route.
///
/// ── What this used to measure, and why it moved ──
///
/// The call button and the tick box on a Home stop *card* were conditional
/// children of one meta row — `if (phone.isNotEmpty)` and `if (pending &&
/// onToggleSelect != null)` — so whenever one was missing the other slid across
/// to take its place. A stop with no phone number pushed its tick a tap-target
/// to the right; an already-decided stop pushed its call button the same way.
/// Down a route of mixed states the two zig-zagged, and a rider reaching for
/// "the tick" had to locate it again on every row.
///
/// Both of those controls are gone with the cards. The tick *is* the row now,
/// and the phone moved into the detail sheet with the rest of the progressive
/// disclosure. So the principle is measured where it now lives: the timeline's
/// spine. Every node — a place, an order, whatever state it is in — sits on one
/// vertical axis, and every row's content starts on one left edge. That is a
/// stronger version of the same contract, because it holds across two kinds of
/// row rather than one, and it is what makes a run scannable in a glance.
///
/// This is the kind of thing that is obvious in a screenshot and invisible in
/// code review, so it is measured against a route deliberately built to mix
/// every state Home still lists.
void main() {
  tearDown(() => ServiceProfile.setActive(ServiceProfile.parcel));

  Map<String, dynamic> stop(
    String id, {
    required String type,
    String? phone,
    String? kitchen,
  }) => {
    'orderid': id,
    'type': type,
    'pickupcustomer': 'Sri Balaji Stores',
    'pickupaddress': '19, Thadagam Road, Coimbatore',
    if (phone != null) 'pickupcontactno': phone,
    if (kitchen != null) 'kitchenid': kitchen,
    if (kitchen != null) 'kitchenname': kitchen,
    'Quantity': '2',
    'expected_pickup_time': DateTime.now().toIso8601String(),
  };

  /// A route covering every trailing-slot combination.
  ///
  /// The states are the three Home still lists — pending, rejected, skipped:
  ///
  ///   1 pending + phone      → tick, and a way into the sheet
  ///   2 pending, no phone    → the same, with nothing to call
  ///   3 rejected + phone     → no tick; it is already decided
  ///   4 skipped, no phone    → not listed at all
  Future<void> pumpRoute(WidgetTester tester, {String? kitchen}) async {
    tester.view.physicalSize = const Size(1170, 2532);
    tester.view.devicePixelRatio = 3.0;
    addTearDown(tester.view.resetPhysicalSize);
    addTearDown(tester.view.resetDevicePixelRatio);

    final trip = Trip.fromStops(
      id: 'mixed',
      stops: [
        stop('A', type: 'pickup', phone: '9876543210', kitchen: kitchen),
        stop('B', type: 'delivery', kitchen: kitchen),
        stop('C', type: 'combined', phone: '9876500000', kitchen: kitchen),
        {
          ...stop('D', type: 'pickup', kitchen: kitchen),
          'orderstatus': 'skipped',
        },
      ],
    );

    await tester.pumpWidget(
      ScreenUtilInit(
        designSize: const Size(390, 844),
        builder: (_, _) => MaterialApp(
          home: Scaffold(
            body: SingleChildScrollView(
              child: TripCard(
                trip: trip,
                rejectedIds: const {'C'},
                onToggleSelect: (_) {},
                onCallStop: (_) {},
                onStopTap: (_) {},
                onUnrejectStop: (_) async {},
              ),
            ),
          ),
        ),
      ),
    );
    await tester.pumpAndSettle();
  }

  testWidgets('every node sits on one vertical axis', (tester) async {
    await pumpRoute(tester);

    final nodes = find.byType(PickupTimelineGroup);
    expect(nodes.evaluate().length, greaterThan(1), reason: 'a mixed route');

    // The spine is a fixed-width rail with the node centred in it, so this
    // holds by construction — which is exactly why it is worth pinning. The
    // moment a state draws a wider node or a row grows a leading control, the
    // rail bends and the run stops being scannable.
    final centres = <double>[
      for (var i = 0; i < nodes.evaluate().length; i++)
        tester.getRect(nodes.at(i)).left,
    ];
    for (final c in centres) {
      expect(c, closeTo(centres.first, 0.5));
    }
  });

  testWidgets('the rail does not move when a row changes state', (
    tester,
  ) async {
    await pumpRoute(tester);

    // Two of the four are listed now. The skipped one has always been
    // Activity's row; the **rejected** one joined it — a declined stop leaves
    // Home the moment it is declined rather than sitting struck through with an
    // UNDO beside it. What is left on the route is the undecided work.
    final names = find.text('Sri Balaji Stores');
    expect(names.evaluate().length, 2);

    final lefts = <double>[
      for (var i = 0; i < 2; i++) tester.getRect(names.at(i)).left,
    ];
    for (final l in lefts) {
      expect(
        l,
        closeTo(lefts.first, 0.5),
        reason: 'a rejected row must not indent differently from a pending one',
      );
    }
  });

  testWidgets('every order in a place shares one axis', (tester) async {
    // ── What this used to say, and why it changed ──
    //
    // It pinned the *place* node and the *order* nodes to one axis, because a
    // spine ran from the header down through the steps and a stepped rail would
    // have bent it.
    //
    // Two things removed that line. The place and its orders are grouped by a
    // card now rather than by a thread, so the header draws no connector below
    // it; and the orders sit in an inset panel *inside* that card, which is what
    // makes them read as its contents. A panel that ignored its own container's
    // inset to keep a nonexistent line straight would just look broken.
    //
    // What still matters — and what actually makes a run scannable — is that
    // every step in a place shares one left edge, whatever state it is in. That
    // is what is pinned here, plus the panel's own inset, so the nesting cannot
    // drift a point at a time.
    ServiceProfile.setActive(ServiceProfile.meals);
    await pumpRoute(tester, kitchen: 'Vidhya Kitchen');

    final group = tester.getRect(find.byType(PickupTimelineGroup).first);
    final steps = find.byType(PickupTimelineStep);
    expect(steps.evaluate(), isNotEmpty, reason: 'the group is open');

    final lefts = <double>[
      for (var i = 0; i < steps.evaluate().length; i++)
        tester.getRect(steps.at(i)).left,
    ];
    for (final l in lefts) {
      expect(l, closeTo(lefts.first, 0.5), reason: 'one axis for every order');
    }

    expect(
      lefts.first - group.left,
      greaterThan(0),
      reason: 'the orders sit inside the card, not flush against its edge',
    );
    expect(
      lefts.first - group.left,
      // ≤ 22: the panel inset plus the well's own padding. The well returned
      // when the route moved onto a white MilerPanel — open orders were
      // white-on-white — so the deliberate indent is two small steps now, and
      // this bound is what keeps it from becoming three.
      lessThanOrEqualTo(22),
      reason:
          'measured ${lefts.first - group.left} — a nested well, not a second '
          'indent level growing a point at a time',
    );
  });

  testWidgets('the phone is not on an order row', (tester) async {
    ServiceProfile.setActive(ServiceProfile.meals);
    await pumpRoute(tester, kitchen: 'Vidhya Kitchen');

    // ── Re-scoped, and the contract is unchanged ──
    //
    // This asserted no call control anywhere on the route. That was right while
    // there was nowhere sensible to put one — but ringing a kitchen is an action
    // on the *place*, and it now lives on the pickup card beside Navigate, where
    // the rider can reach it without opening a list of five customers he is not
    // looking for.
    //
    // What the test was really protecting is the thing it is still protecting: a
    // **step** carries who and which bag, and nothing else. Five call buttons
    // dialling one counter is the meta row coming back one control at a time.
    for (
      var i = 0;
      i < find.byType(PickupTimelineStep).evaluate().length;
      i++
    ) {
      expect(
        find.descendant(
          of: find.byType(PickupTimelineStep).at(i),
          matching: find.byIcon(LucideIcons.phone),
        ),
        findsNothing,
        reason: 'step $i grew a call control',
      );
    }

    // And exactly one on the place that owns it.
    expect(find.byIcon(LucideIcons.phone), findsOneWidget);
  });
}