import 'dart:convert';
import 'dart:ffi';
import 'package:flutter_money_formatter/flutter_money_formatter.dart';
import 'package:http/http.dart' as http;
import 'package:flutter/material.dart';
import 'package:kopralapp/master/get_koperasi_data.dart';
import 'package:kopralapp/models/auth_model/user_auth.dart';
import 'package:kopralapp/models/pinjaman_model/pinjaman.dart';
import 'package:kopralapp/models/pinjaman_model/pinjaman_response.dart';
import 'package:kopralapp/models/user_koperasi/koperasi.dart';
import 'package:kopralapp/screens/ajuan_screen/ajuan_screen.dart';
import 'package:kopralapp/screens/ajuan_screen/create_ajuan_screen/create_ajuan_screen.dart';
import 'package:kopralapp/utils/document_status.dart';
import 'package:kopralapp/utils/myDialog.dart';
import 'package:kopralapp/utils/string.dart';
import 'package:shared_preferences/shared_preferences.dart';

class AjuanViewModel with ChangeNotifier {
  DocumentStatus documentStatus = DocumentStatus.TERLAKSANA;
  bool isReq = true;
  bool isReqError = false;
  //ToDO: Create list pinjaman
  List<Pinjaman> PinjamanList = List();
  List<Pinjaman> PinjamanListAll = List();
  ScrollController controller;
  int dataToView = 4;
  int currentIndex = 0;
  String startDate = "Select Date";
  String endDate = "Select Date";
  String documentNo = "Document No";
  bool isFilter= false;
  Koperasi dataKoperasi;

  loadMore(){
    currentIndex = currentIndex + dataToView;
    if(currentIndex < PinjamanListAll.length){
      setListToDisplay(PinjamanListAll, currentIndex);
    }
    notifyListeners();
  }

  getPinjamanList() async {
    isReq = true;

    dataKoperasi = await getKoperasiToken();
    String url = BASE_URL + API_LIST_PENGAJUAN_PINJAMAN
        + "?kode_koperasi="+ dataKoperasi.kode_koperasi + "&no_anggota=" + dataKoperasi.no_anggota;
    if (isFilter){
      url = url + "?status_pengajuan="+StatusDocument(documentStatus).getName();
    }
    print(url);
    var response = await http.get(url,
      headers: {"Authorization":dataKoperasi.api_key == "" ? "your-api-key" : dataKoperasi.api_key}, )
        .catchError((error) {
          isReqError = true;
          return;
    });

    if (response.body != null) {
      isReq = false;
      print(response.body);
      if (response.statusCode == 200) {
        Iterable res = json.decode(response.body);
        print(res);
        PinjamanResponse PinjamanListResponse = PinjamanResponse.fromJsonMap(res);
        setDataList(PinjamanListResponse.ListPinjaman);

      }
    }else{
      this.PinjamanList = new List();
    }

    notifyListeners();
  }

  setDataList(List<Pinjaman> data){
    data.forEach((element) {
      FlutterMoneyFormatter fmf = new FlutterMoneyFormatter(
          amount: double.parse(element.total_pinjaman.toString()),
          settings: MoneyFormatterSettings(
              symbol: 'Rp',
              thousandSeparator: '.',
              decimalSeparator: ',',
              symbolAndNumberSeparator: ' ',
              fractionDigits: 0,
              compactFormatType: CompactFormatType.short
          )
      );
      print(double.parse(element.total_pinjaman.toString()));
      print(fmf.output.symbolOnLeft);
      element.total_pinjam_display = fmf.output.symbolOnLeft;
    });

    this.PinjamanList.addAll(data);
    notifyListeners();
  }

  setListToDisplay(List<Pinjaman> data, int index){
    if(index+dataToView-1 < PinjamanListAll.length){
      PinjamanList.addAll(data.sublist(index, index+dataToView-1));
    }
    notifyListeners();
  }

  setDefault() {
    PinjamanList.clear();
    getPinjamanList();
    notifyListeners();
  }

  _loadMore() {
    if (controller.offset >= controller.position.maxScrollExtent &&
        !controller.position.outOfRange) {
      loadMore();
    }
  }

  AjuanViewModel(){
    WidgetsBinding.instance.addPostFrameCallback((_) {
      this.getPinjamanList();
    });

  }

}