import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:http/http.dart';

import '../../../models/user.dart';
import '../../api_routes/urls.dart';

class UserProvider extends ChangeNotifier {
  //reset provider data
  void reset() {
    _user = null;
    _loading = false;
  }

  // contain user data
  // when user not login or register _user = null
  User? _user;

  User? get user => _user;

  set user(User? user) {
    _user = user;
    notifyListeners();
  }

  // when login or register in-process _login = true
  // when login or register is done or not start = false
  bool _loading = false;

  bool get isLoading => _loading;

  set isLoading(bool isLoading) {
    _loading = isLoading;
    notifyListeners();
  }

  /// sign in with user - need (email or phone) and password;
  /// return -2 if request in progress
  /// return -1 if error happen when sending request
  /// return state code if request complete may be 200, 404 or 403
  /// for more details check http state manager
  /// lib\controllers\http_status_manger\http_status_manger.dart
  Future<int> login({
    required String host,
    required User user,
  }) async {
    if (_loading == true) {
      return -2;
    }
    _loading = true;
    notifyListeners();
    Response response;
    try {
      response = await post(
        Uri.parse(host + URLs.login),
        body: await user.toLoginJson(),
      );
      _loading = false;
      if (response.statusCode >= 200 && response.statusCode < 300) {
        // client's request was successfully received
        _user = User.fromJson(jsonDecode(utf8.decode(response.bodyBytes))[0]);

        return response.statusCode;
      }
      notifyListeners();
      return response.statusCode;
    } catch (error) {
      _loading = false;
      notifyListeners();
      return -1;
    }
  }

  /// sign up with User object;
  /// return -2 if request in progress
  /// return -1 if error happen when sending request
  /// return state code if request complete may be 200, 404 or 403
  /// for more details about state codes check http state manager
  /// lib\controllers\http_status_manger\http_status_manger.dart
  Future<int> register({
    required String host,
    required User user,
  }) async {
    if (_loading == true) {
      return -2;
    }
    _loading = true;
    notifyListeners();
    Response response;
    try {
      response = await post(Uri.parse(host + URLs.register),
          body: await user.toRegisterJson());
    } catch (error) {
      _loading = false;
      notifyListeners();
      return -1;
    }
    _loading = false;
    notifyListeners();
    if (response.statusCode >= 200 && response.statusCode < 300) {
      // client's request was successfully received
      _user = User.fromJson(jsonDecode(utf8.decode(response.bodyBytes))[0]);
      _user?.hospital = user.hospital;
      notifyListeners();
      return response.statusCode;
    }
    return response.statusCode;
  }

  /// sign up with User object;
  /// return -2 if request in progress
  /// return -1 if error happen when sending request
  /// return state code if request complete may be 200, 404 or 403
  /// for more details about state codes check http state manager
  /// lib\controllers\http_status_manger\http_status_manger.dart
  Future<int> updateProfile({
    required String host,
    required User user,
  }) async {
    if (_loading == true) {
      return -2;
    }
    _loading = true;
    notifyListeners();
    Response response;

    Map<String, dynamic> jsonObject = {};
    jsonObject["uid"] = user.id;
    jsonObject["token"] = user.token;
    if (user.department?.id != _user?.department?.id) {
      jsonObject["department"] = user.department?.id;
    }
    if (user.whatsApp != _user?.whatsApp) {
      jsonObject["whatsapp"] = user.whatsApp;
    }
    if (user.phoneNumber != _user?.phoneNumber) {
      jsonObject["phone"] = user.phoneNumber;
    }
    try {
      response =
          await post(Uri.parse(host + URLs.updateProfile), body: jsonObject);
    } catch (error) {
      _loading = false;
      notifyListeners();
      return -1;
    }

    _loading = false;
    notifyListeners();

    if (response.statusCode >= 200 && response.statusCode < 300) {
      // client's request was successfully received
      _user = User.fromJson(jsonDecode(utf8.decode(response.bodyBytes))[0]);
      _user?.hospital = user.hospital;
      _user?.department = user.department;
      notifyListeners();
      return response.statusCode;
    }
    return response.statusCode;
  }
}