package be.mentoringsystems.merke.presentation;

import be.mentoringsystems.merke.importer.VendorImporter;
import java.util.UUID;
import javax.servlet.ServletContext;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.FilenameUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RequestPart;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

/**
 *
 * @author anthonyarents
 */
@RestController
@RequestMapping("/import")
public class ImportController {
    
    @Value("#{contextParameters.uploadPath}")
    private String uploadPath;
    
    @Autowired
    private ServletContext servletContext;
    
    @Autowired
    private VendorImporter vendorImporter;
    
    private static final Logger LOGGER = LogManager.getLogger(ImportController.class);
    
    @RequestMapping(value = "/vendors", method = RequestMethod.POST, consumes = {MediaType.MULTIPART_FORM_DATA_VALUE}, produces = {MediaType.TEXT_PLAIN_VALUE, MediaType.TEXT_HTML_VALUE, MediaType.APPLICATION_JSON_VALUE})
    public String importVendors(
            @RequestPart(name = "file") MultipartFile file,
            @RequestParam(name = "name") String name) throws Exception {
        if (file != null && !file.isEmpty()) {
            LOGGER.info("receiving file.");
            UUID fileId = UUID.randomUUID();
            StringBuilder uploadPathBuilder = new StringBuilder(uploadPath);
            uploadPathBuilder.append("/").append(fileId.toString());

            String mimeType = servletContext.getMimeType(file.getOriginalFilename());
            String extension = FilenameUtils.getExtension(file.getOriginalFilename());

			if (mimeType == null) {
                // Set to binary type if MIME mapping isnot found.
                mimeType = "application/octet-stream";
            }

            java.io.File serverFile = new java.io.File(uploadPathBuilder.toString() + "." + extension);
            byte[] bytes = file.getBytes();
            FileUtils.writeByteArrayToFile(serverFile, bytes);
            LOGGER.info("starting import.");
                        
            vendorImporter.importFile(serverFile, fileId);

            //fileService.saveFile(fileDTO);
            LOGGER.info("File upload complete.");

            return "{\"success\": true }";
        } else {
            throw new Exception("You failed to upload " + name + " because the file was empty.");
        }
    }
}