package com.dobbinsoft.fw.support.storage;
import com.dobbinsoft.fw.support.properties.FwObjectStorageProperties;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
/**
 * ClassName: LocalStorageClient
 * Description: 本地存储实现
 *
 * @author: e-weichaozheng
 * @date: 2021-03-17
 */
public class LocalStorageClient implements StorageClient, InitializingBean {
    @Autowired
    private FwObjectStorageProperties properties;
    private String storagePath;
    @Override
    public void afterPropertiesSet() throws Exception {
        storagePath = properties.getLocalPath();
        // 确保存储路径存在
        File storageDir = new File(storagePath);
        if (!storageDir.exists()) {
            boolean isCreated = storageDir.mkdirs();
            if (!isCreated) {
                throw new IOException("Failed to create storage directory: " + storagePath);
            }
        }
    }
    @Override
    public StorageResult save(StorageRequest request) {
        StorageResult result = new StorageResult();
        String fullPath = buildPath(storagePath, request.getPath(), request.getFilename());
        String imagePath = buildPath("", request.getPath(), request.getFilename());
        File file = new File(fullPath);
        File parentDir = file.getParentFile();
        if (!parentDir.exists()) {
            boolean isParentCreated = parentDir.mkdirs();
            if (!isParentCreated) {
                result.setSuc(false);
                return result;
            }
        }
        try (InputStream is = request.getIs(); OutputStream os = new FileOutputStream(file)) {
            byte[] buffer = new byte[1024];
            int bytesRead;
            while ((bytesRead = is.read(buffer)) != -1) {
                os.write(buffer, 0, bytesRead);
            }
            result.setSuc(true);
            result.setUrl(imagePath);
        } catch (IOException e) {
            result.setSuc(false);
            e.printStackTrace();
        }
        return result;
    }
    @Override
    public StoragePrivateResult savePrivate(StorageRequest request) {
        throw new RuntimeException("不支持私有保存");
    }
    @Override
    public boolean delete(String url) {
        File file = new File(url);
        return file.delete();
    }
    @Override
    public boolean deletePrivate(String key) {
        throw new RuntimeException("不支持私有保存");
    }
    @Override
    public String getPrivateUrl(String key, Integer expireSec) {
        throw new RuntimeException("不支持私有保存");
    }
    @Override
    public String getKeyFormUrl(String url) {
        throw new RuntimeException("不支持私有保存");
    }
    private String buildPath(String base, String path, String filename) {
        StringBuilder sb = new StringBuilder(base);
        if (!base.endsWith(File.separator)) {
            sb.append(File.separator);
        }
        if (path != null && !path.isEmpty()) {
            sb.append(path);
            if (!path.endsWith(File.separator)) {
                sb.append(File.separator);
            }
        }
        sb.append(filename);
        return sb.toString();
    }
}