yes i do the fetching yes i do the cleaning up sessions

lib/twitter.py

@@ -1,7 +1,9 @@
 from twitter import Twitter, OAuth
 from werkzeug.urls import url_decode
-from model import OAuthToken, Account
+from model import OAuthToken, Account, Post
 from app import db
+from math import inf
+from datetime import datetime
 
 def get_login_url(callback='oob', consumer_key=None, consumer_secret=None):
     twitter = Twitter(
@@ -38,3 +40,42 @@ def receive_verifier(oauth_token, oauth_verifier, consumer_key=None, consumer_se
     new_token.account = acct
     db.session.commit()
     return new_token
+
+def get_twitter_for_acc(account, consumer_key=None, consumer_secret=None):
+    token = account.tokens[0]
+    t = Twitter(
+            auth=OAuth(token.token, token.token_secret, consumer_key, consumer_secret))
+    return t
+
+import locale
+locale.setlocale(locale.LC_TIME, 'C') # jeez i hate that i have to do this
+
+def fetch_posts_for_acc(account, consumer_key=None, consumer_secret=None):
+    t = get_twitter_for_acc(account, consumer_key=consumer_key, consumer_secret=consumer_secret)
+
+    kwargs = { 'user_id': account.remote_id, 'count': 200, 'trim_user': True }
+
+    #most_recent_post = Post.query.order_by(db.desc(Post.created_at)).filter(Post.author_id == account.remote_id).first()
+    #if most_recent_post:
+    #    kwargs['since_id'] = most_recent_post.remote_id
+
+    while True:
+        tweets = t.statuses.user_timeline(**kwargs)
+
+        if len(tweets) == 0:
+            break
+
+        kwargs['max_id'] = +inf
+
+        for tweet in tweets:
+            post = Post(remote_id=tweet['id_str'])
+            post = db.session.merge(post)
+            post.created_at = datetime.strptime(tweet['created_at'], '%a %b %d %H:%M:%S %z %Y')
+            post.body = tweet['text']
+            post.author = account
+            kwargs['max_id'] = min(tweet['id'] - 1, kwargs['max_id'])
+
+
+        account.last_post_fetch = datetime.now()
+        db.session.commit()
+

migrations/versions/8c2ce3a66650_.py

@@ -0,0 +1,28 @@
+"""empty message
+
+Revision ID: 8c2ce3a66650
+Revises: a5718ca3ead1
+Create Date: 2017-07-27 23:35:48.842519
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '8c2ce3a66650'
+down_revision = 'a5718ca3ead1'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.drop_constraint('fk_posts_author_remote_id_accounts', 'posts', type_='foreignkey')
+    op.alter_column('posts', 'author_remote_id', new_column_name='author_id')
+    op.create_foreign_key(op.f('fk_posts_author_id_accounts'), 'posts', 'accounts', ['author_id'], ['remote_id'])
+
+
+def downgrade():
+    op.drop_constraint(op.f('fk_posts_author_id_accounts'), 'posts', type_='foreignkey')
+    op.alter_column('posts', 'author_id', new_column_name='author_remote_id')
+    op.create_foreign_key('fk_posts_author_remote_id_accounts', 'posts', 'accounts', ['author_remote_id'], ['remote_id'])

model.py

@@ -28,7 +28,7 @@ class Account(db.Model, TimestampMixin):
 
     last_post_fetch = db.Column(db.DateTime, server_default='epoch')
 
-    # backref: posts
+    # backref: tokens
 
 class OAuthToken(db.Model, TimestampMixin):
     __tablename__ = 'oauth_tokens'
@@ -37,7 +37,7 @@ class OAuthToken(db.Model, TimestampMixin):
     token_secret = db.Column(db.String, nullable=False)
 
     remote_id = db.Column(db.String, db.ForeignKey('accounts.remote_id'))
-    account = db.relationship(Account)
+    account = db.relationship(Account, backref=db.backref('tokens', order_by=lambda: db.desc(OAuthToken.created_at)))
 
 class Session(db.Model, TimestampMixin):
     __tablename__ = 'sessions'
@@ -53,5 +53,5 @@ class Post(db.Model, TimestampMixin):
     remote_id = db.Column(db.String, primary_key=True)
     body = db.Column(db.String)
 
-    author_remote_id = db.Column(db.String, db.ForeignKey('accounts.remote_id'))
-    author = db.relationship(Account, lazy='joined', backref='posts')
+    author_id = db.Column(db.String, db.ForeignKey('accounts.remote_id'))
+    author = db.relationship(Account)

routes.py

@@ -2,7 +2,7 @@ from app import app
 from flask import render_template, url_for, redirect, request, g, Response
 from datetime import datetime
 import lib.twitter
-from model import Account, Session
+from model import Account, Session, Post
 from app import db
 
 @app.before_request
@@ -21,7 +21,11 @@ def touch_viewer(resp):
 
 @app.route('/')
 def index():
-    return render_template('index.html')
+    if g.viewer:
+        posts = Post.query.order_by(db.desc(Post.created_at)).limit(30)
+        return render_template('index.html', posts=posts)
+    else:
+        return render_template('index.html')
 
 @app.route('/login/twitter')
 def twitter_login_step1():
@@ -35,7 +39,7 @@ def twitter_login_step2():
     oauth_token = request.args['oauth_token']
     oauth_verifier = request.args['oauth_verifier']
     token = lib.twitter.receive_verifier(oauth_token, oauth_verifier, **app.config.get_namespace("TWITTER_"))
-    session = Session(account_remote_id = token.remote_id)
+    session = Session(account_id = token.remote_id)
     db.session.add(session)
     db.session.commit()
     resp = Response(status=301, headers={"location": url_for('index')})
@@ -53,5 +57,5 @@ def logout():
 @app.route('/debug')
 def debug():
     import tasks
-    tasks.remove_old_sessions.delay()
+    tasks.fetch_posts.s('808418').delay()
     return "hi"

tasks.py

@@ -2,22 +2,34 @@ from celery import Celery
 
 from app import app as flaskapp
 from app import db
-from model import Session
+from model import Session, Account
+from lib.twitter import fetch_posts_for_acc
 from datetime import timedelta
 
 app = Celery('tasks', broker=flaskapp.config['CELERY_BROKER'], task_serializer='pickle')
 
 @app.task
 def remove_old_sessions():
-    Session.query.filter(Session.updated_at < (db.func.now() - timedelta(minutes=30))).\
+    Session.query.filter(Session.updated_at < (db.func.now() - timedelta(hours=12))).\
             delete(synchronize_session=False)
     db.session.commit()
 
 @app.task
 def fetch_posts(remote_id):
-    pass
+    fetch_posts_for_acc(Account.query.get(remote_id), **flaskapp.config.get_namespace("TWITTER_"))
+
+@app.task
+def queue_fetch_for_most_stale_accs(num=5, min_staleness=timedelta(hours=1)):
+    accs = Account.query\
+            .filter(Account.last_post_fetch < db.func.now() - min_staleness)\
+            .order_by(db.asc(Account.last_post_fetch))\
+            .limit(num)
+    for acc in accs:
+        fetch_posts.s(acc.remote_id).delay()
+
 
 app.add_periodic_task(60*60, remove_old_sessions)
+app.add_periodic_task(60, queue_fetch_for_most_stale_accs)
 
 
 

templates/index.html

@@ -3,7 +3,7 @@
 <img src="{{g.viewer.account.remote_avatar_url}}"/>
 {{g.viewer.account.remote_display_name}}! <a href="/logout">Log out</a></p>
 <p>your posts:</p>
-{% for post in g.viewer.account.posts %}
+{% for post in posts %}
 <p>{{post.body}}</p>
 {% else %}
 <p>no posts :(</p>