/*
 * Copyright 2012  Research Studios Austria Forschungsges.m.b.H.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package won.owner.web.rest;


import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

@Controller
@RequestMapping("/rest/needphoto")
public class RestNeedPhotoController {

	final Logger logger = LoggerFactory.getLogger(getClass());

	public RestNeedPhotoController() {
	}

	@ResponseBody
	@RequestMapping(
			value = "/",
			method = RequestMethod.POST)
	public ResponseEntity uploadPhoto(@RequestParam("photo") MultipartFile photo, @RequestParam("unique") String uniqueKey,
	                                  @RequestParam("selected") String selected) {
		File tempDir = new File(uniqueKey);
		if(!tempDir.exists()) tempDir.mkdir();
		File photoTempFile = new File(tempDir, selected + "." + FilenameUtils.getExtension(photo.getOriginalFilename()));
		try {
			logger.info("Saving file to " + photoTempFile.getAbsolutePath());
			photo.transferTo(photoTempFile);
			return new ResponseEntity(HttpStatus.OK);
		} catch (IOException e) {
			return new ResponseEntity(HttpStatus.INTERNAL_SERVER_ERROR);
			//log.error("An error occurred.", e);
		}
	}

	@ResponseBody
	@RequestMapping(
			value = "/{unique}/{photoNum}/",
			method = RequestMethod.GET,
			produces = {MediaType.IMAGE_JPEG_VALUE})
	public byte[] getImage(@PathVariable("unique") String unique, @PathVariable("photoNum") String photoNum) {
		File photoFile = new File(unique + File.separator + photoNum);
		if(photoFile.exists()) {
			try {
				return IOUtils.toByteArray(new FileInputStream(photoFile));
			} catch (IOException e) {
				logger.error("Uploading error", e);
			}
		}
		return new byte[0];
	}
}