rog_app/lib/services/location_service.dart

import 'dart:convert';

import 'package:geojson/geojson.dart';
import 'package:get/get.dart';
import 'package:http/http.dart' as http;
import 'package:rogapp/pages/index/index_controller.dart';
import 'package:rogapp/utils/const.dart';

class LocationService{

   static Future<GeoJsonFeatureCollection?> loadLocations() async {

    final IndexController indexController = Get.find<IndexController>();

    String server_url = ConstValues.currentServer();
    String url = "";
    if(indexController.currentUser.length > 0){
      url = '${server_url}/api/location/?is_rog=True';
    }
    else {
      url = '${server_url}/api/location/';
    }
    //String url = 'http://localhost:8100/api/location/';
    final response = await http.get(Uri.parse(url),
      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
      },
    );

    if (response.statusCode == 200) {

    return featuresFromGeoJson(utf8.decode(response.bodyBytes));
    }
    return null;
  }

  static Future<GeoJsonFeatureCollection?> loadLocationsFor(String perfecture, String cat) async {
    final IndexController indexController = Get.find<IndexController>();
    String url = "";
    String server_url = ConstValues.currentServer();
  
    if(cat.isNotEmpty){
      if(indexController.currentUser.length > 0){
        var grp = indexController.currentUser[0]["group"];
        url = '${server_url}/api/inperf/?rog=True&perf=' + perfecture + '&cat=' + cat + "&grp=${grp}";
      }
      else {
        url = '${server_url}/api/inperf/?perf=' + perfecture + '&cat=' + cat;
      }
    }
    else{
      if(indexController.currentUser.length > 0){
        var grp = indexController.currentUser[0]["group"];
        url = '${server_url}/api/inperf/?rog=True&perf=' + perfecture + "&grp=${grp}";
      }
      else {
        url = '${server_url}/api/inperf/?perf=' + perfecture;
      }
    }
    print("----loadLocationsFor url --- ${url}");
    final response = await http.get(Uri.parse(url),
      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
      },
    );

    if (response.statusCode == 200) {
      GeoJsonFeatureCollection cc =  await featuresFromGeoJson(utf8.decode(response.bodyBytes));
      //print(cc);
      return cc; //featuresFromGeoJson(utf8.decode(response.bodyBytes));
    }
    return null;
  }


  static Future<GeoJsonFeatureCollection?> loadLocationsSubFor(String subperfecture, String cat) async {
    final IndexController indexController = Get.find<IndexController>();
    String url = "";
    String server_url = ConstValues.currentServer();
    if(cat.isNotEmpty){
      if(indexController.currentUser.length > 0){
        var grp = indexController.currentUser[0]["group"];
        url = '${server_url}/api/insubperf?rog=True&subperf=' + subperfecture + '&cat=' + cat + "&grp=${grp}";
      }
      else{
        url = '${server_url}/api/insubperf?subperf=' + subperfecture + '&cat=' + cat;
      }
    }
    else{
      if(indexController.currentUser.length > 0){
        var grp = indexController.currentUser[0]["group"];
        url = '${server_url}/api/insubperf?rog=True&subperf=' + subperfecture + "&grp=${grp}";
      }
      else{
        url = '${server_url}/api/insubperf?subperf=' + subperfecture; 
      }
    }
    print("----loadLocationsSubFor url --- ${url}");
    final response = await http.get(Uri.parse(url),
      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
      },
    );

    if (response.statusCode == 200) {
      GeoJsonFeatureCollection cc =  await featuresFromGeoJson(utf8.decode(response.bodyBytes));
      //print(cc);
      return cc; //featuresFromGeoJson(utf8.decode(response.bodyBytes));
    }
    return null;
  }


  static Future<GeoJsonFeatureCollection?> loadLocationsBound(double lat1, double lon1, double lat2, double lon2, double lat3, double lon3, double lat4, double lon4, String cat) async {
    final IndexController indexController = Get.find<IndexController>();
    String url = "";
    String server_url = ConstValues.currentServer();
    if(cat.isNotEmpty){
      if(indexController.currentUser.length > 0){
        var grp = indexController.currentUser[0]["group"];
        url = '${server_url}/api/inbound?rog=True&ln1=${lon1}&la1=${lat1}&ln2=${lon2}&la2=${lat2}&ln3=${lon3}&la3=${lat3}&ln4=${lon4}&la4=${lat4}' + '&cat=' + cat + "&grp=${grp}";
      }
      else{
        url = '${server_url}/api/inbound?ln1=${lon1}&la1=${lat1}&ln2=${lon2}&la2=${lat2}&ln3=${lon3}&la3=${lat3}&ln4=${lon4}&la4=${lat4}' + '&cat=' + cat;
      }
    }
    else{
      if(indexController.currentUser.length > 0){
        var grp = indexController.currentUser[0]["group"];
        url = '${server_url}/api/inbound?rog=True&ln1=${lon1}&la1=${lat1}&ln2=${lon2}&la2=${lat2}&ln3=${lon3}&la3=${lat3}&ln4=${lon4}&la4=${lat4}' + '&grp=${grp}';
      }
      else{
        url = '${server_url}/api/inbound?ln1=${lon1}&la1=${lat1}&ln2=${lon2}&la2=${lat2}&ln3=${lon3}&la3=${lat3}&ln4=${lon4}&la4=${lat4}';
      }
    }
    print("----loadLocationsBound url --- ${url}");
    final response = await http.get(Uri.parse(url),
      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
      },
    );

    if (response.statusCode == 500) {
      return GeoJsonFeatureCollection(); //featuresFromGeoJson(utf8.decode(response.bodyBytes));
    }

    if (response.statusCode == 200) {
      GeoJsonFeatureCollection cc =  await featuresFromGeoJson(utf8.decode(response.bodyBytes));
      if(cc.collection.isEmpty){
        return null;
      }
      else{
        return cc; 
      }
    }
    return null;
  }


  static Future<GeoJsonFeatureCollection?> loadCustomLocations(String name, String cat) async {
    final IndexController indexController = Get.find<IndexController>();
    String url = "";
    if(cat == "-all-"){
      cat = "";
    }
    String server_url = ConstValues.currentServer();
    print("loadCustomLocations url is ----- ${cat}");
    if(cat.isNotEmpty){
      if(indexController.currentUser.length > 0){
        var grp = indexController.currentUser[0]["group"];
        url = '${server_url}/api/custom_area/?rog=True&&cat=' + cat + "&grp=${grp}";
      }
      else{
        url = '${server_url}/api/custom_area/?&cat=' + cat;
      }
    }
    else{
      if(indexController.currentUser.length > 0){
        var grp = indexController.currentUser[0]["group"];
        url = '${server_url}/api/customarea?rog=True&name=${name}' + "&grp=${grp}";
      }
      else{
        url = '${server_url}/api/customarea?name=${name}';
      }
    }
    print("----loadCustomLocations url --- ${url}");
    final response = await http.get(Uri.parse(url),
      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
      },
    );

    if (response.statusCode == 500) {
      return GeoJsonFeatureCollection(); //featuresFromGeoJson(utf8.decode(response.bodyBytes));
    }

    if (response.statusCode == 200) {
      GeoJsonFeatureCollection cc =  await featuresFromGeoJson(utf8.decode(response.bodyBytes));
      if(cc.collection.isEmpty){
        return null;
      }
      else{
        return cc; 
      }
    }
    return null;
  }




}