using OSGeo.GDAL;
using OSGeo.OGR;
namespace adminsystem.Utils.commonutils;
/// <summary>
/// shapefile操作类
/// </summary>
public class ShapeUtils
{
    public ShapeUtils()
    {
        //加载驱动，设置中文
        Gdal.AllRegister();
        Ogr.RegisterAll();
        Gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8", "NO");
        Gdal.SetConfigOption("SHAPE_ENCODING", "");
    }

    public static void Shape2Json(string filepath)
    {
        DataSource ds = Ogr.Open(filepath,1);
        if (ds == null)
        {
            throw new Exception($"Failed to open file: {filepath}");
        }
        Layer layer = ds.GetLayerByIndex(0);
        if (layer == null)
        {
            throw new Exception("Layer not found in SHP file.");
        }

        var geoJsonPath = Path.ChangeExtension(filepath, "geojson");
        var geoJsonDs = Ogr.GetDriverByName("GeoJSON").CreateDataSource(geoJsonPath, null);
        if (geoJsonDs == null)
        {
            throw new Exception("Failed to create GeoJSON data source.");
        }

        geoJsonDs.CopyLayer(layer, layer.GetName(), null);
        geoJsonDs.Dispose();
        ds.Dispose();
        layer.Dispose();
    }
}