def remove_collaborator(list_id, collaborator_id):
if collaborator_id != str(session.get('userID')):
if not db_is_list_owner(list_id, session.get('userID')):
json_abort(404, 'List not found')
if db_get_user_by_id(collaborator_id) == None:
json_abort(400, 'Invalid request parameters')
db_remove_collaborator(list_id, collaborator_id)
return jsonify({'result': True})
def remove_collaborator(list_id, collaborator_id):
# collaborators can only be removed by a list owner, unless a collaborator want to remove himself
if collaborator_id != str(session.get('userID')):
if not db_is_list_owner(list_id, session.get('userID')):
json_abort(404, 'List not found')
if db_get_user_by_id(collaborator_id) == None:
json_abort(400, 'Invalid request parameters')
# TODO: remove collaborator
return jsonify({'result': True})
def update_task(list_id, task_id):
data = request.get_json()
task = db_get_task(list_id, task_id)
if task == None:
json_abort(404, 'Task not found')
title = data.get('title', None)
status = data.get('status', None)
description = data.get('description', None)
due = data.get('due', None)
revision = data.get('revision', None)
if title == None or status == None or description == None or \
revision == None:
json_abort(400, 'Invalid request parameters')
# Only update tasks with there is no newer version on the server
if revision < task.revision:
json_abort(409, 'Newer version of task available')
task.title = title
task.status = status
task.description = description
task.due = due
task.revision = task.revision + 1
task = db_update_task(list_id, task)
if task == None:
json_abort(500, 'Could not update task')
return jsonify(task.__dict__)
def create_task(list_id):
''' creates a new task for a list '''
data = request.get_json()
title = data.get('title', None)
if title == None:
json_abort(400, 'Invalid request parameters')
newTask = db_create_task(list_id, title)
if newTask == None:
json_abort(400, 'Could not create task')
return jsonify(newTask.__dict__)
def remove_task(list_id, task_id):
# 1. Check whether the specified list exists
if (len([l for l in myLists if l.id == list_id]) < 1):
json_abort(404, 'List not found')
# 2. Check whether the specified task exists
tasks = [t for t in myTasks if t.id == task_id and t.list == list_id]
if (len(tasks) < 1):
json_abort(404, 'Task not found')
# 3. finally remove the task
myTasks.remove(tasks[0])
return jsonify({'result': True})
def create_task(list_id):
''' creates a new task for a list '''
# 1. Check whether the specified list exists
if (len([l for l in myLists if l.id == list_id]) < 1):
json_abort(404, 'List not found')
# 2. Check whether the required parameters have been sent
try:
data = request.get_json()
except:
json_abort(400, 'No JSON provided')
if data == None:
json_abort(400, 'Invalid Content-Type')
title = data.get('title', None)
if title == None:
json_abort(400, 'Invalid request parameters')
# 3. calculate the next id
id = max([int(t.id) for t in myTasks] + [-1]) + 1
newTask = Task(title, list_id, id=str(id), status=Task.NORMAL)
# 4. append task to array
myTasks.append(newTask)
# 5. return new task
return jsonify(newTask.__dict__)
def add_collaborator(list_id, collaborator_email):
# TODO: check whether user exists
user =
if user == None:
json_abort(404, 'User not found')
# TODO: Add collaborator to list
db_add_collaborator(l.id, user.id)
# TODO: Get list from database and return it
l =
if l == None:
json_abort(404, "List not updated")
return jsonify(l.__dict__)
def upload_file(list_id, task_id):
# each file is save in a folder named after the corresponding tasks id and list_id
directory = os.path.join(app.config['UPLOAD_FOLDER'], list_id, task_id)
if not os.path.exists(directory):
os.makedirs(directory)
# Get the name of the uploaded files
uploaded_files = request.files.getlist('files[]')
for file in uploaded_files:
if file and allowed_file(file.filename):
# sanitize the filename
filename = secure_filename(file.filename)
# save uploaded file permanently
file.save(os.path.join(directory, filename))
# save reference in database
db_create_file(task_id, filename)
# return the updated task
task = db_get_task(list_id, task_id)
if task == None:
json_abort(500, 'Could not upload file')
return jsonify(task.__dict__)
def upload_file(list_id, task_id):
# each file is save in a folder named after the corresponding tasks id and list_id
# TODO: compute right path
directory =
if not os.path.exists(directory):
os.makedirs(directory)
# Get the name of the uploaded files
uploaded_files = request.files.getlist('files[]')
for file in uploaded_files:
if file and allowed_file(file.filename):
# sanitize the filename
filename = secure_filename(file.filename)
# TODO: save uploaded file permanently
# TODO: save reference in database
# TODO: return the updated task
task =
if task == None:
json_abort(500, 'Could not upload file')
return jsonify(task.__dict__)
def add_collaborator(list_id, collaborator_email):
user = db_get_user(collaborator_email)
if user == None:
json_abort(404, 'User not found')
l = db_get_list(list_id)
if l == None:
json_abort(404, 'List not found')
db_add_collaborator(l.id, user.id)
l = db_get_list(l.id)
if l == None:
json_abort(404, "List not found")
return jsonify(l.__dict__), 201
def update_task(list_id, task_id):
# 1. Check whether the specified list exists
if (len([l for l in myLists if l.id == list_id]) < 1):
json_abort(404, 'List not found')
# 2. Check whether the specified task exists
tasks = [t for t in myTasks if t.id == task_id and t.list == list_id]
if (len(tasks) < 1):
json_abort(404, 'Task not found')
# 3. Check whether the required parameters have been sent
try:
data = request.get_json()
except:
json_abort(400, 'No JSON provided')
if data == None:
json_abort(400, 'Invalid Content-Type')
title = data.get('title', None)
status = data.get('status', None)
description = data.get('description', None)
due = data.get('due', None)
revision = data.get('revision', None)
if title == None or status == None or description == None or \
due == None or revision == None:
json_abort(400, 'Invalid request parameters')
if revision < tasks[0].revision:
json_abort(409, 'Newer version of task available')
# TODO: ignoring 'list' for now. Implement moving tasks from one list to another
tasks[0].title = title
tasks[0].status = status
tasks[0].description = description
tasks[0].due = due
tasks[0].revision = tasks[0].revision + 1
return jsonify(tasks[0].__dict__)
