Add screenshot support

Fixes #21

app/views/packages.py

@@ -187,6 +187,34 @@ def approve_package_page(type=None, author=None, name=None):
 
 	return redirect(package.getDetailsURL())
 
+class CreateScreenshotForm(FlaskForm):
+	title	   = StringField("Title/Caption", [Optional()])
+	fileUpload = FileField("File Upload", [InputRequired()])
+	submit	   = SubmitField("Save")
+
+@app.route("/<type>s/<author>/<name>/screenshots/new/", methods=["GET", "POST"])
+@login_required
+def create_screenshot_page(type, author, name):
+	package = getPageByInfo(type, author, name)
+	if not package.checkPerm(current_user, Permission.MAKE_RELEASE):
+		return redirect(package.getDetailsURL())
+
+	# Initial form class from post data and default data
+	form = CreateScreenshotForm()
+	if request.method == "POST" and form.validate():
+		uploadedPath = doFileUpload(form.fileUpload.data, ["png", "jpg", "jpeg"],
+				"a PNG or JPG image file")
+		if uploadedPath is not None:
+			ss = PackageScreenshot()
+			ss.package = package
+			ss.title   = form["title"].data
+			ss.url     = uploadedPath
+			db.session.add(ss)
+			db.session.commit()
+			return redirect(package.getDetailsURL())
+
+	return render_template("packages/screenshot_new.html", package=package, form=form)
+
 
 class EditRequestForm(PackageForm):
 	edit_title = StringField("Edit Title", [InputRequired(), Length(1, 100)])
@@ -333,20 +361,13 @@ def create_release_page(type, author, name):
 			db.session.commit()
 			return redirect(package.getDetailsURL())
 		else:
-			file = form.fileUpload.data
-			if not file or file.filename == "":
-				flash("No selected file", "error")
-			elif not isFilenameAllowed(file.filename, ["zip"]):
-				flash("Please select a zip file", "error")
-			else:
-				import random, string, os
-				filename = ''.join(random.choice(string.ascii_lowercase + string.ascii_uppercase + string.digits) for _ in range(10)) + ".zip"
-				file.save(os.path.join(app.config["UPLOAD_FOLDER"], filename))
-
+			uploadedPath = doFileUpload(form.fileUpload.data, ["zip"], "a zip file")
+			if uploadedPath is not None:
 				rel = PackageRelease()
 				rel.package = package
 				rel.title = form["title"].data
-				rel.url = "/uploads/" + filename
+				rel.url = uploadedPath
+				db.session.add(rel)
 				db.session.commit()
 				return redirect(package.getDetailsURL())
 

app/views/utils.py

@@ -1,9 +1,31 @@
-from flask import request
+from flask import request, flash
+from app import app
+import random, string, os
+
+def getExtension(filename):
+	return filename.rsplit(".", 1)[1].lower() if "." in filename else None
 
 def isFilenameAllowed(filename, exts):
-	return "." in filename and \
-			filename.rsplit(".", 1)[1].lower() in exts
+	return getExtension(filename) in exts
 
 def shouldReturnJson():
 	return "application/json" in request.accept_mimetypes and \
 			not "text/html" in request.accept_mimetypes
+
+def randomString(n):
+	return ''.join(random.choice(string.ascii_lowercase + \
+			string.ascii_uppercase + string.digits) for _ in range(n))
+
+def doFileUpload(file, allowedExtensions, fileTypeName):
+	if not file or file is None or file.filename == "":
+		flash("No selected file", "error")
+		return None
+
+	ext = getExtension(file.filename)
+	if ext is None or not ext in allowedExtensions:
+		flash("Please upload load " + fileTypeName, "error")
+		return None
+
+	filename = randomString(10) + "." + ext
+	file.save(os.path.join(app.config["UPLOAD_FOLDER"], filename))
+	return "/uploads/" + filename