import 'dart:convert';

import 'package:cssd/models/item_model.dart';
import 'package:cssd/models/my_item_model.dart';
import 'package:dio/dio.dart';
import 'package:file_picker/file_picker.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter_downloader/flutter_downloader.dart';
import 'package:path_provider/path_provider.dart';
import 'package:random_string/random_string.dart';

import '../config/urls.dart';
import '../config/user.dart';
import 'package:http/http.dart' as http;

class ItemProvider extends ChangeNotifier {
  List<PlatformFile> catchImages = [];
  List<Uint8List> images = [];
  String searchBoxValue = '';
  bool filterOn = false;
  List<ItemResultObject>? items;

  List<ItemResultObject>? originalItems;

  ItemDetailObject? result;
  ItemFilterObject? filters = ItemFilterObject(
    id: '',
    hospital: '',
    name: '',
    udi: '',
    size: '',
    specific: '',
  );

  MyItemFilterObject? myItemsFilters = MyItemFilterObject(
    id: '',
    name: '',
    udi: '',
    size: '',
    specific: '',
  );
  int pageNumber = 1;

  void resetPageNumber() => pageNumber = 1;
  bool isloading = false;

  void resetLoading() {
    isloading = false;
    notifyListeners();
  }

  void setLoading() {
    isloading = true;
    notifyListeners();
  }

  bool isloadingButton = false;

  void resetLoadingButton() {
    isloadingButton = false;
    notifyListeners();
  }

  void setLoadingButton() {
    isloadingButton = true;
    notifyListeners();
  }

  Future<List<Map<String, String>>> getHospitalsFilters() async {
    var response = await http.get(
      Uri.parse(Url.filterItems),
      headers: {
        'Authorization': User.token,
      },
    );
    List<Map<String, String>> result = [];
    var filterData = json.decode(response.body);
    for (var hospital in filterData['data']['MedicalCenters']) {
      result.add({
        'name': hospital['name'].toString(),
        'id': hospital['id'].toString()
      });
      // print(hospital['name']);
    }
    return result;
  }

  setImages() async {
    images = [];
    for (var image in catchImages) {
      var result = image.bytes;
      // final batchId = randomString(10);
      // addImage(batchId, result, image.path);
      images.add(result!.buffer
          .asUint8List(result.offsetInBytes, result.lengthInBytes));
    }
    notifyListeners();
  }

  setCatchImages(List<PlatformFile> images) {
    catchImages = images;
    notifyListeners();
  }

  removeImage(int index) {
    catchImages.removeAt(index);
    notifyListeners();
  }

  Future<String> addImage(String batchId, dynamic file, String fileName) async {
    Uint8List imageListInt = Uint8List.fromList(file.cast<int>());
    var dio = new Dio();
    dio.options.headers = {
      'Authorization': User.token,
      'X-Requested-With': 'XMLHttpRequest',
      'Content-Type': 'application/json',
    };
    FormData formData = new FormData.fromMap(
      {
        "batch_id": batchId,
        "file": MultipartFile.fromBytes(imageListInt, filename: fileName)
      },
    );
    await dio.post(
      Url.addImage,
      data: formData,
    );
    return 'Added';
  }

  Future<String> createItemResult(
    name,
    size,
    specific,
    udi,
    note,
    batchId,
  ) async {
    final batchId = randomString(10);

    for (var image in catchImages) {
      await addImage(batchId, image.bytes, image.path!);
    }
    var response = await http.post(Uri.parse(Url.createItemResult),
        body: json.encode(
          {
            'note': note,
            'size': size,
            'specific': specific,
            'name': name,
            'udi': udi,
            'file_batch_id': batchId,
          },
        ),
        headers: {
          'Authorization': User.token,
          'X-Requested-With': 'XMLHttpRequest',
          "Content-Type": "application/json",
          "Accept": "application/json"
        });
    print(response.body);
    if (response.statusCode == 200 || response.statusCode == 201) {
      catchImages = [];
      return 'done';
    } else {
      return 'error ${response.statusCode}';
    }
  }

  Future<void> updateItemResult(
    id,
    name,
    size,
    specific,
    udi,
    description,
  ) async {
    var response = await http.put(Uri.parse(Url.updateItemResult(id)),
        body: json.encode(
          {
            'name': name,
            'udi': udi,
            'note': description,
            'size': size,
            'specific': specific,
          },
        ),
        headers: {
          'Authorization': User.token,
          'X-Requested-With': 'XMLHttpRequest',
          "Content-Type": "application/json",
          "Accept": "application/json"
        });

    print(response.body);
  }

  Future<bool> removeItems(String id) async {
    var response = await http.post(Uri.parse(Url.removeItems(id)), body: {
      '_method': 'delete'
    }, headers: {
      'Authorization': User.token,
    });

    print(response.body);

    if (response.statusCode == 200) {
      items!.removeWhere((item) {
        return item.id.toString() == id;
      });
    }

    notifyListeners();
    return true;
  }

  void setFilters(
    id,
    name,
    udi,
    hospital,
    size,
    specific,
  ) {
    pageNumber = 1;
    filters = ItemFilterObject(
      id: id,
      name: name,
      udi: udi,
      hospital: hospital,
      size: size,
      specific: specific,
    );
    if (filters!.id == '' &&
        filters!.name == '' &&
        filters!.hospital == '' &&
        filters!.size == '' &&
        filters!.specific != '' &&
        filters!.udi == '') {
      filterOn = false;
    } else {
      filterOn = true;
    }
    notifyListeners();
  }

  Future<void> search(String value) async {
    items = [];
    searchBoxValue = value;
    var response = await http.get(
      Uri.parse(Url.searchItems(value)),
      headers: {
        'Authorization': User.token,
      },
    );

    var itemsData = json.decode(response.body);

    for (var item in itemsData['data']) {
      items!.add(
        ItemResultObject(
          name: item['name'],
          id: item['id'].toString(),
          size: item['size'].toString(),
          userName: item['user'] != null ? item['user']['name'] : '',
          status: item['status'],
          udi: item['udi'],
          packageId:
              item['package_id'] != null ? item['package_id'].toString() : "",
        ),
      );
    }
    resetLoading();
    notifyListeners();
  }

  Future<void> getItemResults() async {
    String url = Url.itemResults(pageNumber);
    if (filterOn) {
      if (filters!.id != '') {
        url += '&item_id=${filters!.id}';
      }
      if (filters!.name != '') {
        url += '&name=${filters!.name}';
      }
      if (filters!.hospital != '') {
        url += '&medical_center_id=${filters!.hospital}';
      }
      if (filters!.size != '') {
        url += '&size=${filters!.size}';
      }
      if (filters!.specific != '') {
        url += '&specific=${filters!.specific}';
      }
      if (filters!.udi != '') {
        url += '&udi=${filters!.udi}';
      }
    }
    var response = await http.get(
      Uri.parse(url),
      headers: {
        'Authorization': User.token,
      },
    );

    var itemsData = json.decode(response.body);
    if (pageNumber == 1) {
      originalItems = [];
    }

    for (var item in itemsData['data']) {
      originalItems!.add(
        ItemResultObject(
          name: item['name'],
          id: item['id'].toString(),
          size: item['size'].toString(),
          userName: item['user'] != null ? item['user']['name'] : '',
          status: item['status'],
          udi: item['udi'],
          packageId:
              item['package_id'] != null ? item['package_id'].toString() : "",
        ),
      );
    }
    pageNumber += 1;
    items = originalItems;
    notifyListeners();
  }

  Future<ItemDetailObject> showItemResult(String id) async {
    var response = await http.get(Uri.parse(Url.getItemResult(id)), headers: {
      'Authorization': User.token,
    });
    if (response.statusCode != 200) {
      return ItemDetailObject(
        id: 'null',
        description: 'null',
        name: 'null',
        userName: 'null',
        userCreator: 'null',
        specific: 'null',
        hospital: 'null',
        size: 'null',
        createdAt: '2019-09-18 10:02:03',
        udi: 'null',
        status: 'null',
        filePath: [],
        packageId: 'null',
      );
    }
    var data = json.decode(response.body)['data'];
    print(data);

    List<String> mediaList = [];

    if (data['files'] != null || data['files'] != []) {
      for (var file in data['files']) {
        mediaList.add(file['thumbnail']);
      }
    }

    result = ItemDetailObject(
      id: data['id'].toString(),
      description: data['note'] != null ? data['note'] : '',
      name: data['name'] != null ? data['name'] : '',
      hospital:
          data['user'] != null ? data['user']['medical_center']['name'] : '',
      userName: data['user'] != null ? data['user']['name'] : '',
      userCreator: data['creator'] != null ? data['creator']['name'] : '',
      size: data['size'] != null ? data['size'] : '',
      specific: data['specific'] != null ? data['specific'] : '',
      createdAt: data['created_at'] != null ? data['created_at'] : '',
      udi: data['udi'] != null ? data['udi'] : '',
      status: data['status'],
      packageId:
          data['package_id'] != null ? data['package_id'].toString() : "",
      repair: data['repair'],
      filePath: mediaList,
    );
    return result!;
  }

  Future<bool> changeStatus(String id, String value) async {
    print(id);
    var response = await http.post(
      Uri.parse(Url.changeItemStatus(id)),
      body: json.encode({'status': value}),
      headers: {
        'Authorization': User.token,
        'X-Requested-With': 'XMLHttpRequest',
        "Content-Type": "application/json",
        "Accept": "application/json"
      },
    );

    var itemData = json.decode(response.body);

    try {
      if (itemData['data']['transfers']['status'] == 'approved') {
        return true;
      } else {
        return false;
      }
    } catch (e) {
      return false;
    }
  }

  Future<bool> exportItems() async {
    var response = await http.get(Uri.parse(Url.exportItems), headers: {
      'Authorization': User.token,
    });
    var responseData = json.decode(response.body);
    if (response.statusCode == 200 &&
        responseData['message']['title'] == "Success") {
      final baseStorage = await getExternalStorageDirectory();
      final taskId = await FlutterDownloader.enqueue(
        url: responseData['data']['url'].toString(),
        savedDir: baseStorage!.path,
        showNotification: true,
        openFileFromNotification: true,
        saveInPublicStorage: true,
        fileName: "Items " + DateTime.now().toString() + ".xlsx",
      );
      print(taskId);
    }
    return true;
  }
}