//package com.onemap.overlap.utils;
//
//import org.geotools.data.DataStore;
//import org.geotools.data.DataStoreFinder;
//import org.geotools.data.FeatureSource;
//import org.geotools.data.Transaction;
//import org.geotools.data.memory.MemoryDataStore;
//import org.geotools.data.shapefile.ShapefileDataStore;
//import org.geotools.data.shapefile.ShapefileDataStoreFactory;
//import org.geotools.data.simple.SimpleFeatureCollection;
//import org.geotools.data.simple.SimpleFeatureWriter;
//import org.geotools.feature.FeatureCollection;
//import org.geotools.feature.DefaultFeatureCollection;  // 引入 DefaultFeatureCollection
//import org.geotools.feature.FeatureIterator;
//import org.geotools.feature.simple.SimpleFeatureBuilder;
//import org.geotools.feature.simple.SimpleFeatureTypeImpl;
//import org.locationtech.jts.geom.Geometry;
//import org.locationtech.jts.geom.GeometryFactory;
//import org.opengis.feature.Feature;
//import org.opengis.feature.simple.SimpleFeature;
//import org.opengis.feature.simple.SimpleFeatureType;
//
//import java.io.File;
//import java.util.HashMap;
//import java.util.Iterator;
//import java.util.Map;
//
//public class GeoToolsSpatialOverlay {
//
//    // 加载 Shapefile 文件并返回 FeatureCollection
//    public static FeatureCollection loadShapefile(String shapefilePath) throws Exception {
//        File file = new File(shapefilePath);
//        ShapefileDataStore dataStore = new ShapefileDataStore(file.toURI().toURL());
//        String typeName1 = dataStore.getTypeNames()[0];
//        FeatureSource<SimpleFeatureType, SimpleFeature> featureSource1 = dataStore.getFeatureSource(typeName1);
//        FeatureCollection<SimpleFeatureType, SimpleFeature> featureCollection = featureSource1.getFeatures();
//
//        // 将第一个 Shapefile 数据加载到内存
//        MemoryDataStore memoryDataStore = new MemoryDataStore();
//        memoryDataStore.addFeatures(featureCollection);
////        memoryDataStore.setSpatialIndex(true);  // 启用空间索引（例如，R-tree）
//
//        return featureCollection;
//    }
//
//    // 执行交集（Intersection）分析
//    public static FeatureCollection performIntersection(FeatureCollection layer1, FeatureCollection layer2) throws Exception {
//        // 使用 DefaultFeatureCollection 来存储交集结果
//        FeatureCollection resultCollection = new DefaultFeatureCollection();
//
//        GeometryFactory geometryFactory = new GeometryFactory();
//
//        // 遍历第一个图层
////        for (Feature feature : layer1) {
////
////        }
//        FeatureIterator iterator1 = layer1.features();
//        while (iterator1.hasNext()) {
//            SimpleFeature feature1 = (SimpleFeature)iterator1.next();
//            Geometry geom1 = (Geometry) feature1.getDefaultGeometry();
//            // 遍历第二个图层
//            FeatureIterator iterator2 = layer2.features();
//            while (iterator2.hasNext()) {
//                SimpleFeature simpleFeature2 = (SimpleFeature)iterator2.next();
//                Geometry geom2 = (Geometry) simpleFeature2.getDefaultGeometry();
//                // 如果两者有交集，计算交集
//                if (geom1.intersects(geom2)) {
//                    Geometry intersection = geom1.intersection(geom2);
//                    // 将交集结果添加到新的 FeatureCollection
//                    SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(feature1.getFeatureType());
//                    SimpleFeature newFeature = featureBuilder.buildFeature(null);
//                    newFeature.setAttribute("the_geom", intersection);
//                    ((DefaultFeatureCollection) resultCollection).add(newFeature);
//                }
//            }
//        }
//
//        return resultCollection;
//    }
//
//    // 导出结果到新的 Shapefile 文件
//    public static void exportToShapefile(FeatureCollection featureCollection, String outputShapefilePath) throws Exception {
//        File outputFile = new File(outputShapefilePath);
//        Map<String, Object> params = new HashMap<>();
//        params.put(ShapefileDataStoreFactory.URLP.key, outputFile.toURI().toURL());
//
//        // 创建新的 Shapefile DataStore
//        ShapefileDataStore dataStore = (ShapefileDataStore) DataStoreFinder.getDataStore(params);
//
//        // 获取 FeatureCollection 的 schema 并创建新的 Shapefile Schema
//        SimpleFeatureTypeImpl featureType = (SimpleFeatureTypeImpl) featureCollection.getSchema();
//        dataStore.createSchema(featureType);
//
//        // 写入新的 Shapefile
//        try (SimpleFeatureWriter writer = (SimpleFeatureWriter) dataStore.getFeatureWriterAppend(dataStore.getTypeNames()[0], Transaction.AUTO_COMMIT)) {
//            for (int u = 0; u < featureCollection.size(); u++) {
//                Feature feature = featureCollection.features().next();
//                SimpleFeature simpleFeature = (SimpleFeature) feature;
//                //for (SimpleFeature feature : featureCollection) {
//                SimpleFeature newFeature = writer.next();
//                newFeature.setAttributes(simpleFeature.getAttributes());
//                writer.write();
//            }
//        }
//    }
//
//    public static void main(String[] args) {
//        try {
//            // 加载两个输入的 Shapefile 文件
//            FeatureCollection layer1 = loadShapefile("E:\\projects\\监测图斑审查上传\\图斑套合\\管控数据\\基本农田.shp");
//            FeatureCollection layer2 = loadShapefile("D:\\temp\\wuchuan.shp");
//            // 执行空间叠加分析，获取交集部分
//            FeatureCollection result = performIntersection(layer1, layer2);
//            // 导出交集结果到新的 Shapefile
//            exportToShapefile(result, "D:\\temp\\temp.shp");
//            System.out.println("空间叠加分析完成，结果已导出到新的 Shapefile。");
//        } catch (Exception e) {
//            e.printStackTrace();
//        }
//    }
//}