Refactoring to FastAPI and SQLAlchemy

README.rst

@@ -46,6 +46,18 @@ url's when wanted.
 
 Url's are of the form https://marks.example.com/<userkey>/<action>
 
+digimarks can also be run from the command line: ``uvicorn digimarks:app --reload``
+
+Be sure to export/set the ``SECRETKEY`` environment variable before running, it's needed for some management URI's.
+
+Run ``gunicorn -k uvicorn.workers.UvicornWorker`` for production. For an example of how to set up a server `see this article <https://www.slingacademy.com/article/deploying-fastapi-on-ubuntu-with-nginx-and-lets-encrypt/>`_ with configuration for nginx, uvicorn, systemd, security and such.
+
+The RQ background worker can be run from the command line: ``rq worker --with-scheduler``
+
+Url's are of the form https://hook.example.com/app/<appkey>/<triggerkey>
+
+API documentation is auto-generated, and can be browsed at https://hook.example.com/docs
+
 
 Bookmarklet
 ~~~~~~~~~~~
@@ -74,8 +86,9 @@ If you for whatever reason would lose this user key, just either look on the con
 Server configuration
 ~~~~~~~~~~~~~~~~~~~~
 
-* `vhost for Apache2.4`_
+* `systemd for digimarks API`_ which uses the `gunicorn config`_
-* `uwsgi.ini`_
+* `nginx for digimarks API`_
+* `more config`_
 
 
 What's new?
@@ -91,7 +104,6 @@ Attributions
 
 
 .. _digimarks: https://github.com/aquatix/digimarks
-.. _webhook: https://en.wikipedia.org/wiki/Webhook
 .. |PyPI version| image:: https://img.shields.io/pypi/v/digimarks.svg
    :target: https://pypi.python.org/pypi/digimarks/
 .. |PyPI license| image:: https://img.shields.io/github/license/aquatix/digimarks.svg
@@ -107,3 +119,6 @@ Attributions
 .. _uwsgi.ini: https://github.com/aquatix/digimarks/blob/master/example_config/uwsgi.ini
 .. _Changelog: https://github.com/aquatix/digimarks/blob/master/CHANGELOG.md
 .. _Freepik: http://www.flaticon.com/free-icon/letter-m_2041
+.. _systemd for digimarks API: https://github.com/aquatix/digimarks/blob/master/example_config/systemd/digimarks.service
+.. _gunicorn config: https://github.com/aquatix/digimarks/blob/master/example_config/gunicorn_digimarks_conf.py
+.. _more config: https://github.com/aquatix/digimarks/tree/master/example_config

requirements-dev.in

@@ -1,3 +1,8 @@
 -r requirements.in
 
+black
 pylint
+ruff
+
+build
+twine

requirements-dev.txt

@@ -1,71 +1,223 @@
 #
-# This file is autogenerated by pip-compile with python 3.10
+# This file is autogenerated by pip-compile with Python 3.10
-# To update, run:
+# by the following command:
 #
 #    pip-compile requirements-dev.in
 #
-anyio==3.6.1
+annotated-types==0.5.0
-    # via starlette
+    # via pydantic
-astroid==2.11.7
+anyio==3.7.1
+    # via
+    #   httpcore
+    #   starlette
+    #   watchfiles
+astroid==2.15.6
     # via pylint
-beautifulsoup4==4.11.1
+beautifulsoup4==4.12.2
     # via bs4
+black==23.7.0
+    # via -r requirements-dev.in
+bleach==6.0.0
+    # via readme-renderer
 bs4==0.0.1
     # via -r requirements.in
-certifi==2022.6.15
+build==0.10.0
+    # via -r requirements-dev.in
+certifi==2023.7.22
+    # via
+    #   httpcore
+    #   httpx
+    #   requests
+cffi==1.15.1
+    # via cryptography
+charset-normalizer==3.2.0
     # via requests
-charset-normalizer==2.1.0
+click==8.1.6
-    # via requests
+    # via
-dill==0.3.5.1
+    #   black
+    #   uvicorn
+cryptography==41.0.2
+    # via secretstorage
+dill==0.3.7
     # via pylint
-fastapi==0.79.0
+dnspython==2.4.1
+    # via email-validator
+docutils==0.20.1
+    # via readme-renderer
+email-validator==2.0.0.post2
+    # via fastapi
+exceptiongroup==1.1.2
+    # via anyio
+fastapi[all]==0.100.1
     # via -r requirements.in
 feedgen==0.9.0
     # via -r requirements.in
-greenlet==1.1.2
+greenlet==2.0.2
     # via sqlalchemy
-idna==3.3
+h11==0.14.0
+    # via
+    #   httpcore
+    #   uvicorn
+httpcore==0.17.3
+    # via httpx
+httptools==0.6.0
+    # via uvicorn
+httpx==0.24.1
+    # via fastapi
+idna==3.4
     # via
     #   anyio
+    #   email-validator
+    #   httpx
     #   requests
-isort==5.10.1
+importlib-metadata==6.8.0
+    # via
+    #   keyring
+    #   twine
+isort==5.12.0
     # via pylint
-lazy-object-proxy==1.7.1
+itsdangerous==2.1.2
+    # via fastapi
+jaraco-classes==3.3.0
+    # via keyring
+jeepney==0.8.0
+    # via
+    #   keyring
+    #   secretstorage
+jinja2==3.1.2
+    # via fastapi
+keyring==24.2.0
+    # via twine
+lazy-object-proxy==1.9.0
     # via astroid
-lxml==4.9.1
+lxml==4.9.3
     # via feedgen
+markdown-it-py==3.0.0
+    # via rich
+markupsafe==2.1.3
+    # via jinja2
 mccabe==0.7.0
     # via pylint
-platformdirs==2.5.2
+mdurl==0.1.2
-    # via pylint
+    # via markdown-it-py
-pydantic==1.9.1
+more-itertools==10.0.0
+    # via jaraco-classes
+mypy-extensions==1.0.0
+    # via black
+orjson==3.9.2
     # via fastapi
-pylint==2.14.5
+packaging==23.1
+    # via
+    #   black
+    #   build
+pathspec==0.11.2
+    # via black
+pkginfo==1.9.6
+    # via twine
+platformdirs==3.10.0
+    # via
+    #   black
+    #   pylint
+pycparser==2.21
+    # via cffi
+pydantic==2.1.1
+    # via
+    #   fastapi
+    #   pydantic-extra-types
+    #   pydantic-settings
+pydantic-core==2.4.0
+    # via pydantic
+pydantic-extra-types==2.0.0
+    # via fastapi
+pydantic-settings==2.0.2
+    # via fastapi
+pygments==2.15.1
+    # via
+    #   readme-renderer
+    #   rich
+pylint==2.17.5
     # via -r requirements-dev.in
+pyproject-hooks==1.0.0
+    # via build
 python-dateutil==2.8.2
     # via feedgen
-requests==2.28.1
+python-dotenv==1.0.0
-    # via -r requirements.in
+    # via
+    #   pydantic-settings
+    #   uvicorn
+python-multipart==0.0.6
+    # via fastapi
+pyyaml==6.0.1
+    # via
+    #   fastapi
+    #   uvicorn
+readme-renderer==40.0
+    # via twine
+requests==2.31.0
+    # via
+    #   -r requirements.in
+    #   requests-toolbelt
+    #   twine
+requests-toolbelt==1.0.0
+    # via twine
+rfc3986==2.0.0
+    # via twine
+rich==13.5.0
+    # via twine
+ruff==0.0.280
+    # via -r requirements-dev.in
+secretstorage==3.3.3
+    # via keyring
 six==1.16.0
-    # via python-dateutil
+    # via
-sniffio==1.2.0
+    #   bleach
-    # via anyio
+    #   python-dateutil
-soupsieve==2.3.2.post1
+sniffio==1.3.0
+    # via
+    #   anyio
+    #   httpcore
+    #   httpx
+soupsieve==2.4.1
     # via beautifulsoup4
-sqlalchemy==1.4.39
+sqlalchemy==2.0.19
     # via -r requirements.in
-starlette==0.19.1
+starlette==0.27.0
     # via fastapi
 tomli==2.0.1
+    # via
+    #   black
+    #   build
+    #   pylint
+    #   pyproject-hooks
+tomlkit==0.12.1
     # via pylint
-tomlkit==0.11.1
+twine==4.0.2
-    # via pylint
+    # via -r requirements-dev.in
-typing-extensions==4.3.0
+typing-extensions==4.7.1
-    # via pydantic
+    # via
-urllib3==1.26.11
+    #   astroid
-    # via requests
+    #   fastapi
-wrapt==1.14.1
+    #   pydantic
+    #   pydantic-core
+    #   sqlalchemy
+    #   uvicorn
+ujson==5.8.0
+    # via fastapi
+urllib3==2.0.4
+    # via
+    #   requests
+    #   twine
+uvicorn[standard]==0.23.1
+    # via fastapi
+uvloop==0.17.0
+    # via uvicorn
+watchfiles==0.19.0
+    # via uvicorn
+webencodings==0.5.1
+    # via bleach
+websockets==11.0.3
+    # via uvicorn
+wrapt==1.15.0
     # via astroid
-
+zipp==3.16.2
-# The following packages are considered to be unsafe in a requirements file:
+    # via importlib-metadata
-# setuptools

requirements.in

@@ -1,5 +1,5 @@
 # Core application
-fastapi
+fastapi[all]
 sqlalchemy
 
 # Fetch title etc from links

requirements.txt

@@ -1,44 +1,121 @@
 #
-# This file is autogenerated by pip-compile with python 3.10
+# This file is autogenerated by pip-compile with Python 3.10
-# To update, run:
+# by the following command:
 #
 #    pip-compile requirements.in
 #
-beautifulsoup4==4.11.1
+annotated-types==0.5.0
+    # via pydantic
+anyio==3.7.1
+    # via
+    #   httpcore
+    #   starlette
+    #   watchfiles
+beautifulsoup4==4.12.2
     # via bs4
 bs4==0.0.1
     # via -r requirements.in
-certifi==2022.6.15
+certifi==2023.7.22
+    # via
+    #   httpcore
+    #   httpx
+    #   requests
+charset-normalizer==3.2.0
     # via requests
-charset-normalizer==2.1.0
+click==8.1.6
-    # via requests
+    # via uvicorn
-click==8.1.3
+dnspython==2.4.1
-    # via flask
+    # via email-validator
+email-validator==2.0.0.post2
+    # via fastapi
+exceptiongroup==1.1.2
+    # via anyio
+fastapi[all]==0.100.1
+    # via -r requirements.in
 feedgen==0.9.0
     # via -r requirements.in
-flask==2.1.3
+greenlet==2.0.2
-    # via -r requirements.in
+    # via sqlalchemy
-idna==3.3
+h11==0.14.0
-    # via requests
+    # via
+    #   httpcore
+    #   uvicorn
+httpcore==0.17.3
+    # via httpx
+httptools==0.6.0
+    # via uvicorn
+httpx==0.24.1
+    # via fastapi
+idna==3.4
+    # via
+    #   anyio
+    #   email-validator
+    #   httpx
+    #   requests
 itsdangerous==2.1.2
-    # via flask
+    # via fastapi
 jinja2==3.1.2
-    # via flask
+    # via fastapi
-lxml==4.9.1
+lxml==4.9.3
     # via feedgen
-markupsafe==2.1.1
+markupsafe==2.1.3
     # via jinja2
-peewee==3.15.1
+orjson==3.9.2
-    # via -r requirements.in
+    # via fastapi
+pydantic==2.1.1
+    # via
+    #   fastapi
+    #   pydantic-extra-types
+    #   pydantic-settings
+pydantic-core==2.4.0
+    # via pydantic
+pydantic-extra-types==2.0.0
+    # via fastapi
+pydantic-settings==2.0.2
+    # via fastapi
 python-dateutil==2.8.2
     # via feedgen
-requests==2.28.1
+python-dotenv==1.0.0
+    # via
+    #   pydantic-settings
+    #   uvicorn
+python-multipart==0.0.6
+    # via fastapi
+pyyaml==6.0.1
+    # via
+    #   fastapi
+    #   uvicorn
+requests==2.31.0
     # via -r requirements.in
 six==1.16.0
     # via python-dateutil
-soupsieve==2.3.2.post1
+sniffio==1.3.0
+    # via
+    #   anyio
+    #   httpcore
+    #   httpx
+soupsieve==2.4.1
     # via beautifulsoup4
-urllib3==1.26.10
+sqlalchemy==2.0.19
+    # via -r requirements.in
+starlette==0.27.0
+    # via fastapi
+typing-extensions==4.7.1
+    # via
+    #   fastapi
+    #   pydantic
+    #   pydantic-core
+    #   sqlalchemy
+    #   uvicorn
+ujson==5.8.0
+    # via fastapi
+urllib3==2.0.4
     # via requests
-werkzeug==2.1.2
+uvicorn[standard]==0.23.1
-    # via flask
+    # via fastapi
+uvloop==0.17.0
+    # via uvicorn
+watchfiles==0.19.0
+    # via uvicorn
+websockets==11.0.3
+    # via uvicorn

src/digimarks/main.py

@@ -1,28 +1,25 @@
-from __future__ import print_function
-
 import binascii
 import datetime
 import gzip
 import hashlib
+import logging
 import os
 import shutil
-import sys
+from urllib.parse import urljoin, urlparse, urlunparse
 
 import bs4
 import requests
 from dateutil import tz
-from feedgen.feed import FeedGenerator
 #from flask import (Flask, abort, jsonify, make_response, redirect,
 #                   render_template, request, url_for)
-from typing import List
+from fastapi import Depends, FastAPI, HTTPException, Request, Response
-
+from fastapi.middleware.cors import CORSMiddleware
-import databases
+from feedgen.feed import FeedGenerator
-import sqlalchemy
+from pydantic import BaseModel, DirectoryPath, FilePath, validator
-from fastapi import FastAPI
+from pydantic_settings import BaseSettings
-from pydantic import BaseModel
+from sqlalchemy import VARCHAR, Boolean, Column, DateTime, ForeignKey, Integer, String, Text, create_engine
-
+from sqlalchemy.ext.declarative import declarative_base
-from urlparse import urljoin, urlparse, urlunparse
+from sqlalchemy.orm import sessionmaker
-
 
 DIGIMARKS_USER_AGENT = 'digimarks/2.0.0-dev'
 
@@ -150,44 +147,44 @@ themes = {
     }
 }
 
-try:
-    import settings
-except ImportError:
-    print('Copy settings_example.py to settings.py and set the configuration to your own preferences')
-    sys.exit(1)
 
-# app configuration
+class Settings(BaseSettings):
-APP_ROOT = os.path.dirname(os.path.realpath(__file__))
+    """Configuration needed for digimarks to find its database, favicons, API integrations"""
-MEDIA_ROOT = os.path.join(APP_ROOT, 'static')
-MEDIA_URL = '/static/'
-DATABASE = {
-    'name': os.path.join(APP_ROOT, 'bookmarks.db'),
-    'engine': 'peewee.SqliteDatabase',
-}
-DATABASE_URL = os.path.join(APP_ROOT, 'bookmarks.db')
-#PHANTOM = '/usr/local/bin/phantomjs'
-#SCRIPT = os.path.join(APP_ROOT, 'screenshot.js')
 
-# create our flask app and a database wrapper
+    database_file: FilePath = './bookmarks.db'
-#app = Flask(__name__)
+    media_dir: DirectoryPath
-#app.config.from_object(__name__)
+    media_url: str = '/static/'
-#database = SqliteDatabase(os.path.join(APP_ROOT, 'bookmarks.db'))
 
-database = databases.Database(DATABASE_URL)
+    mashape_api_key: str
 
-metadata = sqlalchemy.MetaData()
+    debug: bool = False
 
-# Strip unnecessary whitespace due to jinja2 codeblocks
-app.jinja_env.trim_blocks = True
-app.jinja_env.lstrip_blocks = True
 
-# set custom url for the app, for example '/bookmarks'
+settings = Settings()
-try:
+
-    app.config['APPLICATION_ROOT'] = settings.APPLICATION_ROOT
+engine = create_engine(
-except AttributeError:
+    f'sqlite:///{settings.database_file}', connect_args={'check_same_thread': False}
-    pass
+)
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+Base = declarative_base()
+
+app = FastAPI()
+
+logger = logging.getLogger('digimarks')
+if settings.debug:
+    logger.setLevel(logging.DEBUG)
+
+# CORS configuration
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],  # Allow requests from everywhere
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
 
-# Cache the tags
 all_tags = {}
 usersettings = {}
 
@@ -202,9 +199,11 @@ def ifilterfalse(predicate, iterable):
 
 
 def unique_everseen(iterable, key=None):
-    "List unique elements, preserving order. Remember all elements ever seen."
+    """List unique elements, preserving order. Remember all elements ever seen.
-    # unique_everseen('AAAABBBCCDAABBB') --> A B C D
+
-    # unique_everseen('ABBCcAD', str.lower) --> A B C D
+    unique_everseen('AAAABBBCCDAABBB') --> A B C D
+    unique_everseen('ABBCcAD', str.lower) --> A B C D
+    """
     seen = set()
     seen_add = seen.add
     if key is None:
@@ -218,6 +217,7 @@ def unique_everseen(iterable, key=None):
                 seen_add(k)
                 yield element
 
+
 def clean_tags(tags_list):
     tags_res = [x.strip() for x in tags_list]
     tags_res = list(unique_everseen(tags_res))
@@ -244,17 +244,13 @@ def file_type(filename):
     return "no match"
 
 
-class BaseModel(Model):
+class User(Base):
-    class Meta:
-        database = database
-
-
-class User(BaseModel):
     """ User account """
-    username = CharField()
+    username = Column(VARCHAR(255))
-    key = CharField()
+    key = Column(VARCHAR(255))
-    theme = CharField(default=DEFAULT_THEME)
+    # theme = CharField(default=DEFAULT_THEME)
-    created_date = DateTimeField(default=datetime.datetime.now)
+    theme = Column(VARCHAR(20), default=DEFAULT_THEME)
+    created_date = Column(DateTime, default=datetime.datetime.now)
 
     def generate_key(self):
         """ Generate userkey """
@@ -262,21 +258,21 @@ class User(BaseModel):
         return self.key
 
 
-class Bookmark(BaseModel):
+class Bookmark(Base):
     """ Bookmark instance, connected to User """
     # Foreign key to User
-    userkey = CharField()
+    userkey = Column(VARCHAR(255))
 
-    title = CharField(default='')
+    title = Column(VARCHAR(255), default='')
-    url = CharField()
+    url = Column(VARCHAR(255))
-    note = TextField(default='')
+    note = Column(Text, default='')
     #image = CharField(default='')
-    url_hash = CharField(default='')
+    url_hash = Column(VARCHAR(255) , default='')
-    tags = CharField(default='')
+    tags = Column(VARCHAR(255), default='')
-    starred = BooleanField(default=False)
+    starred = Column(Boolean, default=False)
 
     # Website (domain) favicon
-    favicon = CharField(null=True)
+    favicon = Column(VARCHAR(255), null=True)
 
     # Status code: 200 is OK, 404 is not found, for example (showing an error)
     HTTP_CONNECTIONERROR = 0
@@ -285,17 +281,17 @@ class Bookmark(BaseModel):
     HTTP_MOVEDTEMPORARILY = 304
     HTTP_NOTFOUND = 404
 
-    http_status = IntegerField(default=200)
+    http_status = Column(Integer, default=200)
     redirect_uri = None
 
-    created_date = DateTimeField(default=datetime.datetime.now)
+    created_date = Column(DateTime, default=datetime.datetime.now)
-    modified_date = DateTimeField(null=True)
+    modified_date = Column(DateTime, null=True)
-    deleted_date = DateTimeField(null=True)
+    deleted_date = Column(DateTime, null=True)
 
     # Bookmark status; deleting doesn't remove from DB
     VISIBLE = 0
     DELETED = 1
-    status = IntegerField(default=VISIBLE)
+    status = Column(Integer, default=VISIBLE)
 
 
     class Meta:
@@ -345,7 +341,7 @@ class Bookmark(BaseModel):
             stream=True,
             headers={'User-Agent': DIGIMARKS_USER_AGENT}
         )
-        filename = os.path.join(MEDIA_ROOT, 'favicons/' + domain + fileextension)
+        filename = os.path.join(settings.media_dir, 'favicons/', domain + fileextension)
         with open(filename, 'wb') as out_file:
             shutil.copyfileobj(response.raw, out_file)
         del response
@@ -387,7 +383,7 @@ class Bookmark(BaseModel):
             fileextension = '.jpg'
         if response.headers['content-type'] == 'image/x-icon':
             fileextension = '.ico'
-        filename = os.path.join(MEDIA_ROOT, 'favicons/' + domain + fileextension)
+        filename = os.path.join(settings.media_dir, 'favicons/', domain + fileextension)
         with open(filename, 'wb') as out_file:
             shutil.copyfileobj(response.raw, out_file)
         del response
@@ -406,11 +402,11 @@ class Bookmark(BaseModel):
         """ Fetch favicon for the domain """
         u = urlparse(self.url)
         domain = u.netloc
-        if os.path.isfile(os.path.join(MEDIA_ROOT, 'favicons/' + domain + '.png')):
+        if os.path.isfile(os.path.join(settings.media_dir, 'favicons/', domain + '.png')):
             # If file exists, don't re-download it
             self.favicon = domain + '.png'
             return
-        if os.path.isfile(os.path.join(MEDIA_ROOT, 'favicons/' + domain + '.ico')):
+        if os.path.isfile(os.path.join(settings.media_dir, 'favicons/', domain + '.ico')):
             # If file exists, don't re-download it
             self.favicon = domain + '.ico'
             return
@@ -466,10 +462,10 @@ class Bookmark(BaseModel):
 
 class PublicTag(BaseModel):
     """ Publicly shared tag """
-    tagkey = CharField()
+    tagkey = Column(VARCHAR(255))
-    userkey = CharField()
+    userkey = Column(VARCHAR(255))
-    tag = CharField()
+    tag = Column(VARCHAR(255))
-    created_date = DateTimeField(default=datetime.datetime.now)
+    created_date = Column(DateTime, default=datetime.datetime.now)
 
     def generate_key(self):
         """ Generate hash-based key for publicly shared tag """
@@ -958,8 +954,8 @@ def publictag_json(tagkey):
         abort(404)
 
 
-@app.route('/pub/<tagkey>/feed')
+@app.get('/pub/<tagkey>/feed')
-def publictag_feed(tagkey):
+async def publictag_feed(request: Request, tagkey: str):
     """ rss/atom representation of the Read-only overview of the bookmarks in the userkey/tag of this PublicTag """
     try:
         this_tag = PublicTag.get(PublicTag.tagkey == tagkey)
@@ -973,7 +969,7 @@ def publictag_feed(tagkey):
         feed.title(this_tag.tag)
         feed.id(request.url)
         feed.link(href=request.url, rel='self')
-        feed.link(href=make_external(url_for('publictag_page', tagkey=tagkey)))
+        feed.link(href=make_external(app.url_path_for('publictag_page', tagkey=tagkey)))
 
         for bookmark in bookmarks:
             entry = feed.add_entry()
@@ -993,20 +989,21 @@ def publictag_feed(tagkey):
             entry.published(bookmark.created_date.replace(tzinfo=tz.tzlocal()))
             entry.updated(updated_date.replace(tzinfo=tz.tzlocal()))
 
-        response = make_response(feed.atom_str(pretty=True))
+        response = Response(data=feed.atom_str(pretty=True), media_type='application/xml')
+
         response.headers.set('Content-Type', 'application/atom+xml')
         return response
     except PublicTag.DoesNotExist:
-        abort(404)
+        raise HTTPException(status_code=404, detail='Tag not found')
 
 
-@app.route('/<userkey>/<tag>/makepublic', methods=['GET', 'POST'])
+@app.get('/<userkey>/<tag>/makepublic')
-def addpublictag(userkey, tag):
+@app.post('/<userkey>/<tag>/makepublic')
-    #user = get_object_or_404(User.get(User.key == userkey))
+async def addpublictag(userkey: str, tag: str):
     try:
         User.get(User.key == userkey)
     except User.DoesNotExist:
-        abort(404)
+        raise HTTPException(status_code=404, detail='User not found')
     try:
         publictag = PublicTag.get(PublicTag.userkey == userkey, PublicTag.tag == tag)
     except PublicTag.DoesNotExist:
@@ -1019,10 +1016,14 @@ def addpublictag(userkey, tag):
         newpublictag.save()
 
         message = 'Public link to this tag created'
-        return redirect(url_for('tag_page', userkey=userkey, tag=tag, message=message))
+        success = True
-
+        # return RedirectResponse(url=url_path_for('tag_page', userkey=userkey, tag=tag, message=message))
-    message = 'Public link already existed'
+    else:
-    return redirect(url_for('tag_page', userkey=userkey, tag=tag, message=message))
+        message = 'Public link already existed'
+        success = False
+    # return redirect(url_for('tag_page', userkey=userkey, tag=tag, message=message))
+    url = app.url_path_for('tag_page', userkey=userkey, tag=tag, message=message)
+    return {'success': success, 'message': message, 'url': url}
 
 
 @app.route('/<userkey>/<tag>/removepublic/<tagkey>', methods=['GET', 'POST'])