import 'package:aves/model/settings.dart';
import 'package:aves/widgets/fullscreen/info/maps/buttons.dart';
import 'package:flutter/material.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';
import 'package:tuple/tuple.dart';

class EntryGoogleMap extends StatefulWidget {
  final String markerId;
  final LatLng latLng;
  final String geoUri;
  final double initialZoom;

  EntryGoogleMap({
    Key key,
    this.markerId,
    Tuple2<double, double> latLng,
    this.geoUri,
    this.initialZoom,
  })  : latLng = LatLng(latLng.item1, latLng.item2),
        super(key: key);

  @override
  State<StatefulWidget> createState() => EntryGoogleMapState();
}

class EntryGoogleMapState extends State<EntryGoogleMap> with AutomaticKeepAliveClientMixin {
  GoogleMapController _controller;

  @override
  void didUpdateWidget(EntryGoogleMap oldWidget) {
    super.didUpdateWidget(oldWidget);
    if (widget.latLng != oldWidget.latLng && _controller != null) {
      _controller.moveCamera(CameraUpdate.newLatLng(widget.latLng));
    }
  }

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

  @override
  Widget build(BuildContext context) {
    super.build(context);
    return Stack(
      children: [
        _buildMap(),
        Positioned.fill(
          child: Align(
            alignment: AlignmentDirectional.centerEnd,
            child: MapButtonPanel(
              geoUri: widget.geoUri,
              zoomBy: _zoomBy,
            ),
          ),
        )
      ],
    );
  }

  Widget _buildMap() {
    final accentHue = HSVColor.fromColor(Theme.of(context).accentColor).hue;
    return GestureDetector(
      onScaleStart: (details) {
        // absorb scale gesture here to prevent scrolling
        // and triggering by mistake a move to the image page above
      },
      child: ClipRRect(
        borderRadius: MapButtonPanel.mapBorderRadius,
        child: Container(
          color: Colors.white70,
          height: 200,
          child: GoogleMap(
            // GoogleMap init perf issue: https://github.com/flutter/flutter/issues/28493
            initialCameraPosition: CameraPosition(
              target: widget.latLng,
              zoom: widget.initialZoom,
            ),
            onMapCreated: (controller) => setState(() => _controller = controller),
            rotateGesturesEnabled: false,
            scrollGesturesEnabled: false,
            zoomControlsEnabled: false,
            zoomGesturesEnabled: false,
            liteModeEnabled: false,
            tiltGesturesEnabled: false,
            myLocationEnabled: false,
            myLocationButtonEnabled: false,
            markers: {
              Marker(
                markerId: MarkerId(widget.markerId),
                icon: BitmapDescriptor.defaultMarkerWithHue(accentHue),
                position: widget.latLng,
              )
            },
          ),
        ),
      ),
    );
  }

  void _zoomBy(double amount) {
    settings.infoMapZoom += amount;
    _controller.animateCamera(CameraUpdate.zoomBy(amount));
  }

  @override
  bool get wantKeepAlive => true;
}