import 'dart:async';
import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:patient_manager/components/buildPatientList.dart';
import 'package:patient_manager/components/myAppBar.dart';
import 'package:http/http.dart' as http;
import 'package:patient_manager/components/mySearchInput.dart';
import 'package:patient_manager/components/patManAppDrawer.dart';
import 'package:patient_manager/objects/patients.dart';

class PatientManager extends StatefulWidget {
  final String userEmail;

  const PatientManager({
    super.key,
    required this.userEmail,
  });

  @override
  State<PatientManager> createState() => _PatientManagerState();
}

class _PatientManagerState extends State<PatientManager> {
  TextEditingController searchController = TextEditingController();
  String endpoint = "http://localhost:80/patients/user/";
  late Future<List<Patient>> futurePatients;
  // late Widget displayWidget;
  //List<Patient> tempList;
  String searchString = "";

  Future<List<Patient>> fetchPatients(String endpoint) async {
    //print("Patien manager page: $endpoint");
    final response = await http.get(Uri.parse(endpoint));
    //print(response.statusCode);
    if (response.statusCode == 200) {
      Iterable l = jsonDecode(response.body);
      List<Patient> patients =
          List<Patient>.from(l.map((model) => Patient.fromJson(model)));
      return patients;
    } else {
      throw Exception('failed to load patients');
    }
  }

  List<Patient> filterSearchResults(List<Patient> mainList, String query) {
    return mainList
        .where((tempList) => tempList.id_no.contains(query.toLowerCase()))
        .toList();
  }

  // Widget displayList(List<Patient> patientsList, String searchString) {
  //   if (searchString.isNotEmpty && searchString != "") {
  //     return BuildPatientsList(
  //       patients: patientsList,
  //       searchString: searchString,
  //     );
  //   }
  //   return const Center(
  //     child: Text(
  //       "Please search for a Patient.",
  //       style: TextStyle(fontSize: 25, color: Colors.grey),
  //       textAlign: TextAlign.center,
  //     ),
  //   );
  // }

  @override
  void initState() {
    futurePatients = fetchPatients(endpoint + widget.userEmail);
    //displayWidget = displayList(tempList, searchString);
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: const MyAppBar(barTitle: "Patient Manager"),
      drawer: PatManAppDrawer(userEmail: widget.userEmail),
      //floatingActionButtonLocation: FloatingActionButtonLocation.endTop,
      floatingActionButton: FloatingActionButton.extended(
        label: const Text(
          "Add Patient",
          style: TextStyle(
            fontWeight: FontWeight.bold,
            color: Colors.white,
          ),
        ),
        backgroundColor: Colors.blueAccent,
        onPressed: () {
          Navigator.of(context)
              .pushNamed('/patient-manager/add', arguments: widget.userEmail);
        },
        icon: const Icon(
          Icons.add,
          color: Colors.white,
        ),
      ),
      body: Row(
        children: [
          Expanded(
            child: Column(children: [
              //spacer
              const SizedBox(height: 10),
              MySearchField(
                controller: searchController,
                hintText: "ID Search",
                required: false,
                editable: true,
                onTap: () {},
                onChanged: (value) {
                  setState(() {
                    searchString = value;
                  });
                },
              ),
              //spacer
              const SizedBox(height: 10),
              //Expanded(child: displayWidget),
              FutureBuilder(
                future: futurePatients,
                builder: (context, snapshot) {
                  if (snapshot.connectionState == ConnectionState.waiting) {
                    return const Center(child: CircularProgressIndicator());
                  } else if (snapshot.hasData) {
                    List<Patient> patientsList;
                    //print(patientsList);
                    if (searchString == "") {
                      patientsList = snapshot.data!;
                    } else {
                      patientsList =
                          filterSearchResults(snapshot.data!, searchString);
                    }

                    return Expanded(
                      child: BuildPatientsList(
                        patients: patientsList,
                        searchString: searchString,
                      ),
                    );
                  } else {
                    return const PatManAppDrawer(
                        userEmail: "Error pulling email");
                  }
                },
              ),
            ]),
          ),
        ],
      ),
    );
  }
}