healthcare-frontend/lib/prescriptions.dart

import 'dart:convert';
import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:geolocator/geolocator.dart';
import 'package:healthcare_user/common/settings.dart';
import 'package:healthcare_user/models/pharmacies.dart';
import 'package:image_picker/image_picker.dart';

class Prescriptions extends StatefulWidget {
  const Prescriptions({Key? key}) : super(key: key);

  @override
  State<Prescriptions> createState() => _PrescriptionsState();
}

class _PrescriptionsState extends State<Prescriptions> {

  final ImagePicker _picker = ImagePicker();
  String Url='';
  List<PharmaciesModel> pharmaciesList = [];
  List<PharmaciesModel> FilteredList = [];
  bool isSupplierDataLoading=false;
  bool isSereverIssue = false;
  double lat=0;
  double lng=0;
  String userAddress='';
  String dropdownArea = '2';
  //String dropdownType = 'Tank';
  var AreaItems = [
    '2',
    '5',
    '10',
    '25',
    '50',
    '100'
  ];


  Future<void> getAllPharmaciesData(var distance) async {



    try {
      var pharmacyResponse = await AppSettings.getAllpharmacies();

      setState(() {
        pharmaciesList =
            ((jsonDecode(pharmacyResponse)['data']) as List).map((dynamic model) {
              return PharmaciesModel.fromJson(model);
            }).toList();
        FilteredList=[];
        pharmaciesList.forEach((element) async{
          var distanceInM;
          if(distance=='2'){
            distanceInM=2000;
          }
          else if(distance=='5'){
            distanceInM=5000;
          }
          else if(distance=='10'){
            distanceInM=10000;
          }
          else if(distance=='25'){
            distanceInM=25000;
          }
          else if(distance=='50'){
            distanceInM=50000;
          }
          else if(distance=='100'){
            distanceInM=100000;
          }
          double distanceInMeters =  await Geolocator.distanceBetween(element.lat,element.lng,lat,lng);
          if(distanceInMeters<=distanceInM){
            FilteredList.add(element);
          }
        });

        //FilteredList=suppliersList.where((product) => product.address.toString().toUpperCase()=='SUMP').toList();


        isSupplierDataLoading = false;
      });


    } catch (e) {
      setState(() {
        isSupplierDataLoading = false;
        isSereverIssue = true;
      });
    }
  }

  @override
  void initState() {

    lat=AppSettings.userLatitude;
    lng=AppSettings.userLongitude;
    userAddress=AppSettings.userAddress;
    getAllPharmaciesData(dropdownArea);
    super.initState();
  }


  Future pickImageFromGallery() async {
    try {
      final image = await _picker.pickImage(source: ImageSource.gallery);
      if (image == null) return;
      final imageTemp = File(image.path);


      var res=await AppSettings.uploadImageHTTPForPrescriptions(image);
      print(jsonDecode(res));
      setState(() {
        Url = jsonDecode(res)['picture'];
      });

    } on PlatformException catch (e) {
      print('Failed to pick image: $e');
    }
  }

  Future takeImageFromCamera() async {
    try {
      final image = await _picker.pickImage(source: ImageSource.camera);
      if (image == null) return;
      final imageTemp = File(image.path);

      var res=await AppSettings.uploadImageHTTPForPrescriptions(image);
      print(jsonDecode(res));
      setState(() {
        Url = jsonDecode(res)['picture'];
      });

    } on PlatformException catch (e) {
      print('Failed to pick image: $e');
    }
  }

  /**/

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppSettings.appBar('Prescriptions'),
      body: Container(

        child: Column(
          children: [
            Padding(
              padding: EdgeInsets.all(10),
              child: ElevatedButton(
                style: ElevatedButton.styleFrom(
                  primary: primaryColor, // background
                  onPrimary: Colors.white, // foreground
                ),
                onPressed: () async{

                  showModalBottomSheet<void>(
                      context: context,
                      builder: (BuildContext context) {
                        return SizedBox(
                          height: 200,
                          child: Center(
                            child: Row(
                              mainAxisAlignment:
                              MainAxisAlignment.center,
                              children: <Widget>[
                                GestureDetector(
                                  child: Icon(
                                    Icons.camera_alt_outlined,
                                    size: 100,
                                    color: greyColor,
                                  ),
                                  onTap: () async {
                                    await takeImageFromCamera();
                                    Navigator.pop(context);
                                  },
                                ),
                                SizedBox(
                                  width: MediaQuery.of(context)
                                      .size
                                      .width *
                                      .20,
                                ),
                                GestureDetector(
                                  child: Icon(
                                    Icons.photo,
                                    size: 100,
                                    color: greyColor,
                                  ),
                                  onTap: () async {
                                    await pickImageFromGallery();
                                    Navigator.pop(context);
                                  },
                                ),
                              ],
                            ),
                          ),
                        );
                      });
                },
                child: const Text('Select image'),
              ),
            ),
            Container(
              width: MediaQuery.of(context).size.width * .18,
              height:
              MediaQuery.of(context).size.height * .10,
              decoration: BoxDecoration(
                  shape: BoxShape.rectangle,
                  image: DecorationImage(
                      image: NetworkImage(Url) as ImageProvider, // picked file
                      fit: BoxFit.contain)),
            ),
          ],
        )
      ),
    );
  }
}