package controllers;

import java.io.File;
import java.util.List;

import helpers.FileHelper;
import models.Image;
import play.Logger;
import play.mvc.Controller;
import play.mvc.Http;
import play.mvc.Http.MultipartFormData.FilePart;
import play.mvc.Result;

public class Images extends Controller {

	public Result save() {
		final Http.MultipartFormData<File> body = request().body().asMultipartFormData();
		final FilePart<File> picture = body.getFile("file");
		if (picture != null) {
			String fileName = picture.getFilename();
			String contentType = picture.getContentType();
			Logger.info("contentType: " + contentType);
			Image image = FileHelper.save(picture.getFilename(), picture.getFile(), contentType);
			if (image == null) {
				flash("error", "could not save the image!");
				return badRequest();
			}
			Logger.info("saving file: " + fileName + " to " + image.imagePath);
			return redirect(routes.Images.thumbnail(image.checksum));
		} else {
			flash("error", "Missing file");
			return badRequest();
		}
	}

	public Result show(String checksum) {
		Image image = Image.Find.where().eq("checksum", checksum).findUnique();
		if(image == null) {
			return notFound("image "+checksum+ " not found!");
		}
		return ok(views.html.Images.show.render(image));
	}

	public Result index() {
		List<models.Image> images = models.Image.Find.where().order("created DESC").findList();
		return ok(views.html.Images.index.render(images));
	}

	public Result thumbnail(String checksum) {
		models.Image image = models.Image.findOrCreate(checksum);
		File imageFile = new File(image.thumbnailPath);
		if (image == null || !imageFile.exists()) {
			return notFound("thumbnail with checksum " + checksum + " could not be found!");
		}
		return ok(imageFile);
	}
	
	public Result sobel(String checksum) {
		models.Image image = models.Image.findOrCreate(checksum);
		File imageFile = new File(image.sobelImagePath);
		if (image == null || !imageFile.exists()) {
			return notFound("sobel with checksum " + checksum + " could not be found!");
		}
		return ok(imageFile);
	}	

	public Result reference(String checksum) {
		models.Image image = models.Image.findOrCreate(checksum);
		File imageFile = new File(image.refImagePath);
		if (image == null || !imageFile.exists()) {
			return notFound("referenceImage with checksum " + checksum + " could not be found!");
		}
		return ok(imageFile);
	}
}