main.py

import os
import smtplib
from datetime import date
from flask import Flask, render_template, request, url_for, redirect, flash, send_from_directory, abort
from werkzeug.security import generate_password_hash, check_password_hash
from flask_login import UserMixin, login_user, LoginManager, login_required, current_user, logout_user
from flask_bootstrap import Bootstrap
from flask_sqlalchemy import SQLAlchemy
from sqlalchemy.orm import relationship
from flask_ckeditor import CKEditor
from flask_gravatar import Gravatar
from flask_mail import Message, Mail
from functools import wraps

from forms import CreatePostForm, RegisterForm, LoginForm, CommentForm

# load_dotenv(override=True)

MY_EMAIL = os.environ.get("MY_EMAIL")
MY_PASSWORD = os.environ.get("MY_PASSWORD")

ADMINS = [MY_EMAIL]

app = Flask(__name__)
app.config['SECRET_KEY'] = os.environ.get('SECRET_KEY')

app.config.update(dict(
    DEBUG=True,
    MAIL_SERVER='smtp.gmail.com',
    MAIL_PORT=587,
    MAIL_USE_TLS=True,
    MAIL_USE_SSL=False,
    MAIL_USERNAME=MY_EMAIL,
    MAIL_PASSWORD=MY_PASSWORD,
))
mail = Mail(app)

ckeditor = CKEditor(app)
Bootstrap(app)
gravatar = Gravatar(app,
                    size=100,
                    rating='g',
                    default='retro',
                    force_default=False,
                    force_lower=False,
                    use_ssl=False,
                    base_url=None)

# CONNECT TO DB
app.config['SQLALCHEMY_DATABASE_URI'] = os.environ.get("DATABASE_URL")  # 'sqlite:///blog.db'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db = SQLAlchemy(app)

login_manager = LoginManager()
login_manager.init_app(app)


@login_manager.user_loader
def load_user(user_id):
    return User.query.get(int(user_id))


# CONFIGURE TABLE
class User(UserMixin, db.Model):
    __tablename__ = "users"
    id = db.Column(db.Integer, primary_key=True)
    email = db.Column(db.String(100), unique=True)
    password = db.Column(db.String(100))
    name = db.Column(db.String(100))
    # This will act like a list of BlogPost objects attached to each User.
    # The "author" refers to the author property in the BlogPost class.
    posts = relationship("BlogPost", back_populates="author")
    comments = relationship("Comment", back_populates="comment_author")


class BlogPost(db.Model):
    __tablename__ = "blog_posts"
    id = db.Column(db.Integer, primary_key=True)
    # Create Foreign Key, "users.id" the users refers to the tablename of User.
    author_id = db.Column(db.Integer, db.ForeignKey("users.id"))
    # Create reference to the User object, the "posts" refers to the posts property in the User class.
    author = relationship("User", back_populates="posts")
    title = db.Column(db.String(250), unique=True, nullable=False)
    subtitle = db.Column(db.String(250), nullable=False)
    date = db.Column(db.String(250), nullable=False)
    body = db.Column(db.Text, nullable=False)
    img_url = db.Column(db.String(250), nullable=False)
    comments = relationship("Comment", back_populates="parent_post")


class Comment(db.Model):
    __tablename__ = "comments"
    id = db.Column(db.Integer, primary_key=True)
    post_id = db.Column(db.Integer, db.ForeignKey("blog_posts.id"))
    # `users.id` The `users` refers to the table name of the Users class.
    #  `comments` refers to the `comments` properties in the User and BlogPost classes.
    author_id = db.Column(db.Integer, db.ForeignKey("users.id"))
    parent_post = relationship("BlogPost", back_populates="comments")
    comment_author = relationship("User", back_populates="comments")
    text = db.Column(db.Text, nullable=False)


# Create all the tables in the database
db.create_all()


# Create admin-only decorator
def admin_only(f):
    @wraps(f)
    def decorated_function(*args, **kwargs):
        # If id is not 1 then return abort with 403 error
        if current_user.id != 1:
            return abort(403)
        # Otherwise continue with the route function
        return f(*args, **kwargs)

    return decorated_function


# Everytime you call render_template(), you pass the current_user over to the template.
# current_user.is_authenticated will be True if they are logged in/authenticated after registering.
# You can check for this is header.html


# RENDER HOME PAGE USING DB
@app.route('/')
def get_all_posts():
    posts = BlogPost.query.all()
    return render_template("index.html", all_posts=posts, current_user=current_user)


# Register new users into the User database
@app.route("/register", methods=["GET", "POST"])
def register():
    form = RegisterForm()
    if form.validate_on_submit():
        # If user's email already exists
        if User.query.filter_by(email=form.email.data).first():
            # Send flash message
            flash("You've already signed up with that email, log in instead!")
            # Redirect to /login route
            return redirect(url_for("login"))

        hash_and_salted_password = generate_password_hash(
            form.password.data,
            method="pbkdf2:sha256",
            salt_length=8
        )
        new_user = User(
            email=form.email.data,
            name=form.name.data,
            password=hash_and_salted_password,
        )
        db.session.add(new_user)
        db.session.commit()

        # This line will authenticae the user with Flask-Login
        login_user(new_user)
        return redirect(url_for("get_all_posts"))

    return render_template("register.html", form=form, current_user=current_user)


@app.route("/login", methods=["GET", "POST"])
def login():
    form = LoginForm()
    if form.validate_on_submit():
        email = form.email.data
        password = form.password.data

        user = User.query.filter_by(email=email).first()
        # Email doesn't exist
        if not user:
            flash("That email does not exist, please try again.")
            return redirect(url_for("login"))
        # Password incorrect
        elif not check_password_hash(user.password, password):
            flash("Password incorrect, please try again.")
            return redirect(url_for("login"))
        else:
            login_user(user)
            return redirect(url_for("get_all_posts"))

    return render_template("login.html", form=form, current_user=current_user)


# RENDER POST USING DB
@app.route("/post/<int:post_id>", methods=["GET", "POST"])
def show_post(post_id):
    form = CommentForm()
    requested_post = BlogPost.query.get(post_id)

    if form.validate_on_submit():
        if not current_user.is_authenticated:
            flash('You need to login or register to comment.')
            return redirect(url_for("login"))

        new_comment = Comment(
            text=form.comment_text.data,
            comment_author=current_user,
            parent_post=requested_post
        )
        db.session.add(new_comment)
        db.session.commit()

    return render_template("post.html", post=requested_post, form=form, current_user=current_user)


# EDIT POST
@app.route("/edit-post/<int:post_id>", methods=["GET", "POST"])
@login_required
def edit_post(post_id):
    post = BlogPost.query.get(post_id)
    edit_form = CreatePostForm(
        title=post.title,
        subtitle=post.subtitle,
        img_url=post.img_url,
        author=current_user,
        body=post.body
    )
    if edit_form.validate_on_submit():
        post.title = edit_form.title.data
        post.subtitle = edit_form.subtitle.data
        post.img_url = edit_form.img_url.data
        post.author = current_user
        post.body = edit_form.body.data

        db.session.commit()

        return redirect(url_for("show_post", post_id=post.id))

    return render_template("make-post.html", form=edit_form, is_edit=True, current_user=current_user)


@app.route("/new-post", methods=["GET", "POST"])
@admin_only
def add_new_post():
    form = CreatePostForm()
    if form.validate_on_submit():
        new_post = BlogPost(
            title=form.title.data,
            subtitle=form.subtitle.data,
            body=form.body.data,
            img_url=form.img_url.data,
            author=current_user,
            date=date.today().strftime("%B %d, %Y")
        )
        db.session.add(new_post)
        db.session.commit()
        return redirect(url_for("get_all_posts"))
    return render_template("make-post.html", form=form, current_user=current_user)


@app.route("/delete/<int:post_id>")
@admin_only
def delete_post(post_id):
    post_to_delete = BlogPost.query.get(post_id)
    db.session.delete(post_to_delete)
    db.session.commit()
    return redirect(url_for("get_all_posts"))


@app.route("/delete_comment/<int:post_id>/<int:comment_id>")
@admin_only
def delete_comment(post_id, comment_id):
    comment_to_delete = Comment.query.get(comment_id)
    db.session.delete(comment_to_delete)
    db.session.commit()

    form = CommentForm()
    requested_post = BlogPost.query.get(post_id)

    return render_template("post.html", post=requested_post, form=form, current_user=current_user)


@app.route("/resources")
@admin_only
def collabera_training_notes():
    return render_template("linux-git-sql.html")


@app.route("/logout")
def logout():
    logout_user()
    return redirect(url_for("get_all_posts"))


@app.route("/about")
def about():
    return render_template("about.html", current_user=current_user)


@app.route("/contact", methods=["GET", "POST"])
@login_required
def contact():
    if request.method == "POST":
        data = request.form
        name = data["name"]
        email_ = data["email"]
        phone = data["phone"]
        message = data["message"]

        send_email(name, email_, phone, message)
        flash('Successfully sent your message.')

        return redirect(url_for('get_all_posts'))
    return render_template("contact.html", current_user=current_user)


def send_email(name, eml, phone, message):
    msg = Message("New Message", sender=ADMINS[0], recipients=ADMINS)
    msg.body = f"Name: {name}\nEmail: {eml}\nPhone: {phone}\nMessage: {message}"
    # msg.html = '<b>HTML</b> body'
    with app.app_context():
        mail.send(msg)
    # with smtplib.SMTP("smtp.gmail.com", port=587) as connection:
    #     connection.starttls()
    #     connection.login(MY_EMAIL, MY_PASSWORD)
    #     connection.sendmail(MY_EMAIL, "hteju2001@gmail.com", email_message)


if __name__ == "__main__":
    app.run()
    # app.run(host='127.0.0.1', port=5000, debug=True)