135 lines
5.4 KiB
Python
135 lines
5.4 KiB
Python
from datetime import datetime, timezone
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from typing import Optional
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import sqlalchemy as sa
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import sqlalchemy.orm as so
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from werkzeug.security import generate_password_hash, check_password_hash
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import os, pydenticon, hashlib, base64, jwt
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from time import time
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from app import db, login, app
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from flask_login import UserMixin
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#debug
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#import sys
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followers = sa.Table(
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'followers',
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db.metadata,
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sa.Column('follower_id', sa.Integer, sa.ForeignKey('user.id'), primary_key=True),
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sa.Column('followed_id', sa.Integer, sa.ForeignKey('user.id'), primary_key=True)
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)
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class User(UserMixin, db.Model):
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id: so.Mapped[int] = so.mapped_column(primary_key=True)
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username: so.Mapped[str] = so.mapped_column(sa.String(64), index=True, unique=True)
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email: so.Mapped[str] = so.mapped_column(sa.String(120), index=True, unique=True)
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password_hash: so.Mapped[Optional[str]] = so.mapped_column(sa.String(256))
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posts: so.WriteOnlyMapped['Post'] = so.relationship(back_populates='author')
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about_me: so.Mapped[Optional[str]] = so.mapped_column(sa.String(140))
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last_seen: so.Mapped[Optional[datetime]] = so.mapped_column(default=lambda: datetime.now(timezone.utc))
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following: so.WriteOnlyMapped['User'] = so.relationship(
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secondary=followers,
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primaryjoin=(followers.c.follower_id == id),
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secondaryjoin=(followers.c.followed_id == id),
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back_populates='followers')
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followers: so.WriteOnlyMapped['User'] = so.relationship(
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secondary=followers,
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primaryjoin=(followers.c.followed_id == id),
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secondaryjoin=(followers.c.follower_id == id),
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back_populates='following')
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def set_password(self, password):
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self.password_hash = generate_password_hash(password)
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def check_password(self, password):
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return check_password_hash(self.password_hash, password)
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def get_reset_password_token(self, expires_in=600):
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token = jwt.encode({'reset_password': self.id, 'exp': time() + expires_in},
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app.config['SECRET_KEY'], algorithm='HS256')
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return token
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@staticmethod
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def verify_reset_password_token(token):
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try:
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id = jwt.decode(token,
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app.config['SECRET_KEY'], algorithms='HS256')['reset_password']
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except:
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return
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return db.session.get(User, id)
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def gen_avatar(self, write_png=True):
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foreground = ['#ACE1AF',
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'#ACC4E1',
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'#E1ACDE',
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'#E1CAAC',
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'#AFFF00',
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'#00FFCF',
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'#5000FF',
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'#FF0030']
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background = '#151515'
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digest = hashlib.md5(self.email.lower().encode('utf-8')).hexdigest()
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basedir = os.path.abspath(os.path.dirname(__file__))
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pngloc = os.path.join(basedir, 'usercontent', 'identicon', str(digest) + '.png')
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icongen = pydenticon.Generator(8, 5, digest=hashlib.md5, foreground=foreground, background=background)
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pngicon = icongen.generate(self.email, 150, 240, padding=(10, 10, 10, 10), inverted=False, output_format="png")
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if write_png:
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pngfile = open(pngloc, "wb")
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pngfile.write(pngicon)
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pngfile.close()
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else:
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return str(base64.b64encode(pngicon))[2:-1]
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def avatar_path(self):
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digest = hashlib.md5(self.email.lower().encode('utf-8')).hexdigest()
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basedir = os.path.abspath(os.path.dirname(__file__))
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pngloc = os.path.join(basedir, 'usercontent', 'identicon', digest + '.png')
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return pngloc
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def follow(self, user):
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if not self.is_following(user):
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self.following.add(user)
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def unfollow(self, user):
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if self.is_following(user):
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self.following.remove(user)
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def is_following(self, user):
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query = self.following.select().where(User.id == user.id)
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return db.session.scalar(query) is not None
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def followers_count(self):
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query = sa.select(sa.func.count()).select_from(self.followers.select().subquery())
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return db.session.scalar(query)
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def following_count(self):
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query = sa.select(sa.func.count()).select_from(self.following.select().subquery())
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return db.session.scalar(query)
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def following_posts(self):
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Author = so.aliased(User)
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Follower = so.aliased(User)
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return (
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sa.select(Post)
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.join(Post.author.of_type(Author))
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.join(Author.followers.of_type(Follower), isouter=True)
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.where(sa.or_(
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Follower.id == self.id,
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Author.id == self.id
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))
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.group_by(Post)
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.order_by(Post.timestamp.desc())
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)
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def __repr__(self):
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return '<User {}>'.format(self.username)
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class Post(db.Model):
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id: so.Mapped[int] = so.mapped_column(primary_key=True)
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body: so.Mapped[str] = so.mapped_column(sa.String(140))
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timestamp: so.Mapped[datetime] = so.mapped_column(index=True, default=lambda: datetime.now(timezone.utc))
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user_id: so.Mapped[int] = so.mapped_column(sa.ForeignKey(User.id), index=True)
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author: so.Mapped[User] = so.relationship(back_populates='posts')
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def __repr__(self):
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return '<Post {}>'.format(self.body)
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@login.user_loader
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def load_user(id):
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return db.session.get(User, int(id))
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