package com.example.server.utils;

import com.example.Application;

import javax.swing.*;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.StandardCopyOption;

public class DownLoadTmpFile {
    public static void down(String name,JFrame frame1){
        name = "templateFile/" + name;
        InputStream inputStream = Application.class.getClassLoader().getResourceAsStream(name);

        if (inputStream == null) {
            try {
                inputStream = new FileInputStream(name);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }

        // 创建临时文件
        File tempFile;
        try {
            tempFile = File.createTempFile("tmp", ".tmp");
            tempFile.deleteOnExit(); // 确保临时文件在程序退出时删除
            Files.copy(inputStream, tempFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
        } catch (IOException e) {
            JOptionPane.showMessageDialog(frame1, "无法创建临时文件: " + e.getMessage(), "错误", JOptionPane.ERROR_MESSAGE);
            return;
        }

        // 弹出文件选择对话框
        JFileChooser fileChooser = new JFileChooser();
        fileChooser.setSelectedFile(new File(name)); // 默认文件名
        int result = fileChooser.showSaveDialog(frame1);

        if (result == JFileChooser.APPROVE_OPTION) {
            File selectedFile = fileChooser.getSelectedFile();
            try {
                // 将临时文件复制到用户选择的位置
                Files.copy(tempFile.toPath(), selectedFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
                JOptionPane.showMessageDialog(frame1, "文件下载成功", "成功", JOptionPane.INFORMATION_MESSAGE);
            } catch (IOException e) {
                JOptionPane.showMessageDialog(frame1, "文件保存失败: " + e.getMessage(), "错误", JOptionPane.ERROR_MESSAGE);
            }
        } else {
            // 如果用户取消操作，不显示额外提示
            tempFile.delete(); // 删除临时文件
        }
    }
}