package com.matrix.component.ueditor.upload;
import com.matrix.component.ueditor.define.State;

import com.matrix.component.ueditor.PathFormat;
import com.matrix.component.ueditor.define.AppInfo;
import com.matrix.component.ueditor.define.BaseState;
import com.matrix.component.ueditor.define.FileType;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;

import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.List;
import java.util.Map;

public class BinaryUploader {

	public static final State save(HttpServletRequest request, Map<String, Object> conf) {
		// FileItemStream fileStream = null;
		// boolean isAjaxUpload = request.getHeader( "X_Requested_With" ) != null;

		if (!ServletFileUpload.isMultipartContent(request)) {
			return new BaseState(false, AppInfo.NOT_MULTIPART_CONTENT);
		}

		// ServletFileUpload upload = new ServletFileUpload(
		// new DiskFileItemFactory());
		//
		// if ( isAjaxUpload ) {
		// upload.setHeaderEncoding( "UTF-8" );
		// }

		try {
			// FileItemIterator iterator = upload.getItemIterator(request);
			//
			// while (iterator.hasNext()) {
			// fileStream = iterator.next();
			//
			// if (!fileStream.isFormField())
			// break;
			// fileStream = null;
			// }
			//
			// if (fileStream == null) {
			// return new BaseState(false, AppInfo.NOTFOUND_UPLOAD_DATA);
			// }
			MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
			MultipartFile multipartFile = multipartRequest.getFile(conf.get("fieldName").toString());
			if (multipartFile == null) {
				return new BaseState(false, AppInfo.NOTFOUND_UPLOAD_DATA);
			}

			String savePath = (String) conf.get("savePath");
			// String originFileName = fileStream.getName();
			String originFileName = multipartFile.getOriginalFilename();
			String suffix = FileType.getSuffixByFilename(originFileName);

			originFileName = originFileName.substring(0, originFileName.length() - suffix.length());
			savePath = savePath + suffix;

			long maxSize = ((Long) conf.get("maxSize")).longValue();

			if (!validType(suffix, (String[]) conf.get("allowFiles"))) {
				return new BaseState(false, AppInfo.NOT_ALLOW_FILE_TYPE);
			}

			savePath = PathFormat.parse(savePath, originFileName);

			String physicalPath = (String) conf.get("rootPath") + savePath;

			// InputStream is = fileStream.openStream();
			InputStream is = multipartFile.getInputStream();
			State storageState = StorageManager.saveFileByInputStream(is, physicalPath, maxSize);
			is.close();

			if (storageState.isSuccess()) {
				storageState.putInfo("url", PathFormat.format(savePath));
				storageState.putInfo("type", suffix);
				storageState.putInfo("original", originFileName + suffix);
			}

			return storageState;
			// } catch (FileUploadException e) {
			// return new BaseState(false, AppInfo.PARSE_REQUEST_ERROR);
		} catch (IOException e) {
		}
		return new BaseState(false, AppInfo.IO_ERROR);
	}

	private static boolean validType(String type, String[] allowTypes) {
		List<String> list = Arrays.asList(allowTypes);

		return list.contains(type);
	}
}