rog_app/lib/services/location_service.dart

import 'dart:convert';
import 'package:geojson_vi/geojson_vi.dart';
import 'package:get/get.dart';
import 'package:http/http.dart' as http;
import 'package:rogapp/model/location.dart';
import 'package:rogapp/utils/const.dart';

class LocationService extends GetxService{
  Future<LocationService> init() async {
    print('$runtimeType ready!');
    return this;
  }

  Future<List<Location>> loadLocations() async {
    List<Location> locs = [];
    String serverUrl = ConstValues.currentServer();
    String url = '${serverUrl}/api/location/';
    final response = await http.get(Uri.parse(url),
      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
      },
    );

    if (response.statusCode == 200) {
      GeoJSONFeatureCollection coll = GeoJSONFeatureCollection.fromJSON(utf8.decode(response.bodyBytes));
      for(int i=0; i<coll.features.length; i++ ){
        GeoJSONFeature? gf = coll.features[i];
        if(gf != null){
          Location l = Location.fromGeoJSONFeture(gf);
          locs.add(l);
        }
      }
    }
    return locs;
  }

  Future<List<Location>>  loadLocationsFor(String perfecture, String cat) async {
    List<Location> locs = [];
    String url = "";
    String serverUrl = ConstValues.currentServer();
    if(cat.isNotEmpty){
      url = '${serverUrl}/api/inperf/?perf=' + perfecture + '&cat=' + cat;
    }
    else{
      url = '${serverUrl}/api/inperf/?perf=' + perfecture;
    }
    //print("----- url ---- ${url} --- ${cat}");
    final response = await http.get(Uri.parse(url),
      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
      },
    );

    if (response.statusCode == 200) {
      GeoJSONFeatureCollection coll = GeoJSONFeatureCollection.fromJSON(utf8.decode(response.bodyBytes));
      for(int i=0; i<coll.features.length; i++ ){
        GeoJSONFeature? gf = coll.features[i];
        if(gf != null){
          Location l = Location.fromGeoJSONFeture(gf);
          locs.add(l);
        }
      }
    }
    return locs;
  }


  Future<List<Location>> loadLocationsSubFor(String subperfecture, String cat) async {
    List<Location> locs = [];
    String url = "";
    String server_url = ConstValues.currentServer();
    if(cat.isNotEmpty){
      url = '${server_url}/api/insubperf?subperf=' + subperfecture + '&cat=' + cat;
    }
    else{
      print("------ loading location in sub----");
      url = '${server_url}/api/insubperf?subperf=' + subperfecture;
    }
    final response = await http.get(Uri.parse(url),
      headers: <String, String>{
        'Content-Type': 'application/json; charset=UTF-8',
      },
    );

    if (response.statusCode == 200) {
      GeoJSONFeatureCollection coll = GeoJSONFeatureCollection.fromJSON(utf8.decode(response.bodyBytes));
      for(int i=0; i<coll.features.length; i++ ){
        GeoJSONFeature? gf = coll.features[i];
        if(gf != null){
          Location l = Location.fromGeoJSONFeture(gf);
          locs.add(l);
        }
      }
    }
    return locs;
  }

  Future<List<Location>> loadLocationsBound(double lat1, double lon1, double lat2, double lon2, double lat3, double lon3, double lat4, double lon4, String cat) async {
    List<Location> locs = [];
    String url = "";
    String server_url = ConstValues.currentServer();
    //print("cat is ----- ${cat}");
    if(cat.isNotEmpty){
      url = '${server_url}/api/inbound?ln1=${lon1}&la1=${lat1}&ln2=${lon2}&la2=${lat2}&ln3=${lon3}&la3=${lat3}&ln4=${lon4}&la4=${lat4}' + '&cat=' + cat;
    }
    else{
      url = '${server_url}/api/inbound?ln1=${lon1}&la1=${lat1}&ln2=${lon2}&la2=${lat2}&ln3=${lon3}&la3=${lat3}&ln4=${lon4}&la4=${lat4}';
    }
    //print("----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 coll = GeoJSONFeatureCollection.fromJSON(utf8.decode(response.bodyBytes));
      for(int i=0; i<coll.features.length; i++ ){
        GeoJSONFeature? gf = coll.features[i];
        if(gf != null){
          Location l = Location.fromGeoJSONFeture(gf);
          locs.add(l);
        }
      }
    }
    return locs;
  }

  Future<List<Location>> loadCustomLocations(String name, String cat) async {
    List<Location> locs = [];
    String url = "";
    String server_url = ConstValues.currentServer();
    print("cat is ----- ${cat}");
    if(cat.isNotEmpty){
      url = '${server_url}/api/custom_area/?&cat=' + cat;
      //url = 'http://localhost:8100/api/customarea?name=${name}&cat=' + cat;
    }
    else{
      url = '${server_url}/api/customarea?name=${name}&';
      //url = 'http://localhost:8100/api/customarea?name=${name}&';
    }
    print("----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 coll = GeoJSONFeatureCollection.fromJSON(utf8.decode(response.bodyBytes));
      for(int i=0; i<coll.features.length; i++ ){
        GeoJSONFeature? gf = coll.features[i];
        if(gf != null){
          Location l = Location.fromGeoJSONFeture(gf);
          locs.add(l);
        }
      }
    }
    return locs;
  }

}