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

import 'package:miler/views/helpers/constants/Colorconstants.dart';
import 'package:miler/views/helpers/widgets/app_widgets.dart';
import 'package:miler/views/helpers/constants/Font_constant.dart';
import 'package:miler/widget/Bottom_page.dart';
import 'package:miler/Models/stop_status.dart';
import 'package:miler/views/helpers/constants/design_constants.dart';

/// The live strip that sits at the foot of Home and Bookings while a pickup is
/// under way — the rider's way back into the stop he is already on.
///
/// ── One banner, not two ──
///
/// Home and Bookings each had their own copy. They had drifted into different
/// widgets: one a gradient card with a double drop shadow, an order-id badge and
/// a status pill; the other a flat red box with a LIVE chip and a hard 40-
/// character address truncation. Same job, same data, two designs — which is how
/// the same screen came to look older on one tab than the other.
///
/// ── It has to clear the nav bar ──
///
/// Both copies pinned themselves to `bottom: 0`. The nav bar *floats*: it is a
/// `Positioned` pill in the shell's `Stack`, not a `bottomNavigationBar`, so the
/// Scaffold reserves nothing for it and `SafeArea` cannot see it. The banner
/// therefore sat underneath it, with the bar covering the tap target of the one
/// control telling the rider he has a job open.
///
/// So the banner lifts itself clear by [BottomPage.bottomInset]. Both call sites
/// just pin it to `bottom: 0` and let it place itself.
class ActivePickupBanner extends StatefulWidget {
  /// The tallest this banner gets, excluding the device inset.
  ///
  /// Declared here because the surface that overlays a list is the only thing
  /// that knows how much of the list it covers. The Deliveries queue reserved
  /// a flat `80.h` for it — a number measured once, by eye, that every later
  /// change to this widget made wrong silently by hiding the last row of the
  /// run behind it.
  static double get maxHeight => ButtonSizes.primary + 46.h;

  final List<Map<String, dynamic>> activePickups;
  final void Function(Map<String, dynamic>) onTap;

  const ActivePickupBanner({
    super.key,
    required this.activePickups,
    required this.onTap,
  });

  @override
  State<ActivePickupBanner> createState() => _ActivePickupBannerState();
}

class _ActivePickupBannerState extends State<ActivePickupBanner>
    with SingleTickerProviderStateMixin {
  /// The live dot actually pulses.
  ///
  /// A static dot beside the word LIVE is a claim the interface does not back
  /// up; movement is what makes "there is a job running right now" read without
  /// being read. Initialised lazily on the declaration rather than in
  /// `initState` so hot reload cannot leave it unset — see the note in
  /// `Bottom_page.dart`.
  /// Created on first *use*, not on first touch of any kind.
  ///
  /// This was a `late final` initialised on the declaration, which meant
  /// `dispose()` calling `_pulse.dispose()` *constructed* the controller during
  /// teardown whenever it had never been used — and `build` returns early with
  /// no active pickups, so that is the normal path when a rider's last stop
  /// finishes and the banner unmounts. `createTicker` then looked up
  /// `TickerMode` on a deactivated element and threw. Two of the app's own
  /// tests caught it; it needs the nullable so dispose can ask "was there
  /// ever one?" instead of answering "there is now".
  AnimationController? _pulseController;

  AnimationController get _pulse => _pulseController ??= AnimationController(
    vsync: this,
    duration: const Duration(milliseconds: 1100),
  )..repeat(reverse: true);

  @override
  void dispose() {
    _pulseController?.dispose();
    super.dispose();
  }

  String _address(Map<String, dynamic> pickup) =>
      (pickup['pickupaddress'] ??
              pickup['PickupAddress'] ??
              pickup['address'] ??
              '')
          .toString()
          .trim();

  /// Where the rider has got to on this stop — from the one place the app
  /// names its statuses, so the banner cannot say "At pickup" while the card
  /// behind it says something else about the same stop. See [StopStatusX.label].
  String _status(Map<String, dynamic> pickup) => stopStatusOf(pickup).label;

  @override
  Widget build(BuildContext context) {
    if (widget.activePickups.isEmpty) return const SizedBox.shrink();

    final pickup = widget.activePickups.first;
    final count = widget.activePickups.length;
    final address = _address(pickup);

    // Rides the floating nav bar: it is `Positioned` outside the Scaffold's
    // body, so `SafeArea` knows nothing about it and anything pinned to the
    // bottom lands underneath. See [BottomPage.bottomInset].
    //
    // A fixed inset now. This used to follow a `navVisible` notifier up and
    // down, because the bar left the screen entirely on scroll. It compacts
    // instead of leaving, so there is no longer a state in which the room is
    // free — and chasing the 20pt difference re-laid this out every time the
    // rider changed scroll direction, for a gap he would never notice.
    return Padding(
      padding: EdgeInsets.only(bottom: BottomPage.bottomInset(context) + 10.h),
      child: Padding(
        // 16 — the same gutter the nav bar above it uses, so the two stack as
        // one column rather than as two floating objects of different widths.
        padding: EdgeInsets.symmetric(horizontal: 16.w),
        child: _Card(
          pulse: _pulse,
          count: count,
          address: address,
          status: _status(pickup),
          onTap: () => widget.onTap(pickup),
        ),
      ),
    );
  }
}

class _Card extends StatelessWidget {
  final Animation<double> pulse;
  final int count;
  final String address;
  final String status;
  final VoidCallback onTap;

  const _Card({
    required this.pulse,
    required this.count,
    required this.address,
    required this.status,
    required this.onTap,
  });

  @override
  Widget build(BuildContext context) {
    return Material(
      color: ColorConstants.primary,
      // 20 — between the stop cards' 16 and the nav bar's 32, which is where it
      // sits in the visual stack.
      borderRadius: BorderRadius.circular(DesignConstants.radiusXl),
      clipBehavior: Clip.antiAlias,
      // Tinted rather than black: a neutral shadow under a saturated red surface
      // reads as grime. The gradient and second shadow the Home copy carried are
      // gone — one flat fill and one shadow is the language the rest of the app
      // now speaks.
      shadowColor: ColorConstants.primary.withValues(alpha: 0.45),
      elevation: 10,
      child: InkWell(
        onTap: onTap,
        splashColor: Colors.white.withValues(alpha: 0.10),
        highlightColor: Colors.white.withValues(alpha: 0.06),
        child: Padding(
          padding: EdgeInsets.fromLTRB(12.w, 11.h, 12.w, 11.h),
          child: Row(
            children: [
              Container(
                width: 42.w,
                height: 42.w,
                decoration: BoxDecoration(
                  color: ColorConstants.pureSurface.withValues(alpha: 0.16),
                  borderRadius: BorderRadius.circular(DesignConstants.radiusXl),
                ),
                child: Icon(LucideIcons.bike, color: Colors.white, size: 22.sp),
              ),
              SizedBox(width: 11.w),
              Expanded(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  mainAxisSize: MainAxisSize.min,
                  children: [
                    Row(
                      children: [
                        _LiveChip(pulse: pulse),
                        SizedBox(width: 7.w),
                        // Flexible, not bare: this row has a fixed-width chip on
                        // one side and a title that grows with the pickup count
                        // and the text scale on the other. Every unflexed row of
                        // that shape in this app has overflowed eventually.
                        Flexible(
                          child: Text(
                            count > 1
                                ? '$count Active Pickups'
                                : 'Active Pickup',
                            maxLines: 1,
                            overflow: TextOverflow.ellipsis,
                            style: TextStyle(
                              color: Colors.white,
                              fontSize: 15.sp,
                              fontWeight: FontWeight.w800,
                              letterSpacing: -0.3,
                              fontFamily: FontConstants.fontFamily,
                            ),
                          ),
                        ),
                      ],
                    ),
                    SizedBox(height: 3.h),
                    Row(
                      children: [
                        Icon(
                          LucideIcons.mapPin,
                          color: Colors.white.withValues(alpha: 0.72),
                          size: 13.sp,
                        ),
                        SizedBox(width: 3.w),
                        Expanded(
                          child: Text(
                            // Ellipsised by the layout, not chopped at 40
                            // characters — the old truncation cut mid-word and
                            // then appended its own "…", which on a narrow phone
                            // ellipsised a second time.
                            address.isEmpty ? status : '$status · $address',
                            maxLines: 1,
                            overflow: TextOverflow.ellipsis,
                            style: TextStyle(
                              color: Colors.white.withValues(alpha: 0.82),
                              fontSize: 12.5.sp,
                              fontWeight: FontWeight.w600,
                              fontFamily: FontConstants.fontFamily,
                            ),
                          ),
                        ),
                      ],
                    ),
                  ],
                ),
              ),
              SizedBox(width: 8.w),
              Container(
                width: 30.w,
                height: 30.w,
                decoration: BoxDecoration(
                  color: ColorConstants.pureSurface.withValues(alpha: 0.16),
                  shape: BoxShape.circle,
                ),
                child: Icon(
                  LucideIcons.arrowRight,
                  color: Colors.white,
                  size: 16.sp,
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

/// The word LIVE, with a dot that breathes.
class _LiveChip extends StatelessWidget {
  final Animation<double> pulse;

  const _LiveChip({required this.pulse});

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: EdgeInsets.fromLTRB(6.w, 2.5.h, 7.w, 2.5.h),
      decoration: BoxDecoration(
        color: ColorConstants.pureSurface.withValues(alpha: 0.2),
        borderRadius: BorderRadius.circular(DesignConstants.radiusFull),
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          AnimatedBuilder(
            animation: pulse,
            builder: (context, _) {
              // A halo that grows and fades around a dot that stays put. Scaling
              // the dot itself would shift the text beside it every frame.
              return SizedBox(
                width: 7.w,
                height: 7.w,
                child: Stack(
                  alignment: Alignment.center,
                  children: [
                    Transform.scale(
                      scale: 1.0 + 1.1 * pulse.value,
                      child: DecoratedBox(
                        decoration: BoxDecoration(
                          color: ColorConstants.pureSurface.withValues(
                            alpha: 0.55 * (1 - pulse.value),
                          ),
                          shape: BoxShape.circle,
                        ),
                        child: SizedBox(width: 7.w, height: 7.w),
                      ),
                    ),
                    Container(
                      width: 6.w,
                      height: 6.w,
                      decoration: BoxDecoration(
                        color: ColorConstants.pureSurface,
                        shape: BoxShape.circle,
                      ),
                    ),
                  ],
                ),
              );
            },
          ),
          SizedBox(width: 5.w),
          Text(
            'Active',
            style: TextStyle(
              color: Colors.white,
              fontSize: 9.sp,
              fontWeight: FontWeight.w800,
              letterSpacing: 0.7,
              fontFamily: FontConstants.fontFamily,
            ),
          ),
        ],
      ),
    );
  }
}