package com.yj.earth.business.controller;

import com.yj.earth.common.util.GdalJsonConverter;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.zip.GZIPOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

@Tag(name = "矢量数据管理")
@RestController
@RequestMapping("/gdal")
public class GdalController {

    @Operation(summary = "导入矢量数据")
    @PostMapping("/import")
    public void importDataStreamGzip(@Parameter(description = "矢量文件路径", required = true) @RequestParam("path") String path, HttpServletResponse response) throws IOException {

        // 解析矢量文件、得到JSON数据
        String jsonData = GdalJsonConverter.convertToJson(path);

        // 设置响应头
        String filename = URLEncoder.encode("data.gz", StandardCharsets.UTF_8);
        response.setContentType("application/gzip");
        response.setHeader("Content-Disposition", "attachment; filename=\"" + filename + "\"");
        response.setCharacterEncoding("UTF-8");

        // 使用GZIP压缩并输出
        try (OutputStream outputStream = response.getOutputStream();
             GZIPOutputStream gzipOutputStream = new GZIPOutputStream(outputStream)) {
            gzipOutputStream.write(jsonData.getBytes(StandardCharsets.UTF_8));
            gzipOutputStream.finish();
        }
    }
}