import os
from flask import render_template, url_for, flash, redirect , request
from PIL import Image
from flaskblog import app , db , bcrypt
from flaskblog.forms import RegistrationForm, LoginForm , UpdateForm , PostForm
from flaskblog.models import User, Post
from flask_login import login_user , current_user , logout_user , login_required
import secrets
# posts = [
#     {
#         'author': 'Corey Schafer',
#         'title': 'Blog Post 1',
#         'content': 'First post content',
#         'date_posted': 'April 20, 2018'
#     },
#     {
#         'author': 'Jane Doe',
#         'title': 'Blog Post 2',
#         'content': 'Second post content',
#         'date_posted': 'April 21, 2018'
#     }
# ]


# @app.route("/")
@app.route("/home")
def home():
    posts=Post.query.all()
    return render_template('home.html', posts=posts)


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


@app.route("/register", methods=['GET', 'POST'])
def register():
    if current_user.is_authenticated:
        return redirect(url_for('home'))
    form = RegistrationForm()
    if form.validate_on_submit():
        hash_password= bcrypt.generate_password_hash(form.password.data).decode('utf-8')
        user =User(username=form.username.data , email=form.email.data , password=hash_password)
        db.session.add(user)
        db.session.commit()
        flash(f'Account created for {form.username.data}!', 'success')
        return redirect(url_for('login'))
    return render_template('register.html', title='Register', form=form)


@app.route("/login", methods=['GET', 'POST'])
def login():
    if current_user.is_authenticated:
        return redirect(url_for('home'))
    form = LoginForm()
    if form.validate_on_submit():
        user = User.query.filter_by(email=form.email.data).first() 
        if user and bcrypt.check_password_hash(user.password , form.password.data):
            login_user(user , remember=form.remember.data)
            next_page= request.args.get('next')
            return redirect(next_page) if next_page else  redirect(url_for('home'))
        else:      
            flash('Login Unsuccessful. Please check username and password', 'danger')
    return render_template('login.html', title='Login', form=form)



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



# Defining The function for image validations
def save_picture(form_picture):
    random_hex = secrets.token_hex(8)
    file_name , file_extentaion = os.path.splitext(form_picture.filename)
    picture_fn = random_hex + file_extentaion
    picture_path= os.path.join(app.root_path , 'statis/profile_pics' , picture_fn)
    output_size= (700 , 1125)
    i= Image.open(form_picture)
    i.thumbnail(output_size)
    i.save(picture_path)

    return picture_fn





# def save_picture(form_picture):
#     random_hex = secrets.token_hex(8)
#     _, f_ext = os.path.splitext(form_picture.filename)
#     picture_fn = random_hex + f_ext
#     picture_path = os.path.join(app.root_path, 'static/profile_pics', picture_fn)

#     output_size = (125, 125)
#     i = Image.open(form_picture)
#     i.thumbnail(output_size)
#     i.save(picture_path)

#     return picture_fn

# User Account 

@app.route("/account" , methods=['POST' , 'GET'])
@login_required
def account():
    form=UpdateForm()
    if form.validate_on_submit():
        if form.picture.data:
            picture_file = save_picture(form.picture.data)
            current_user.image_file= picture_file
        current_user.username = form.username.data
        current_user.email = form.email.data
        db.session.commit()
        # db.session.commit()
        flash('Your Account has been created' , 'success')
        return redirect(url_for('account'))
    elif request.method == 'GET':
        form.email.data=current_user.email
        form.username.data=current_user.username
    image_file= url_for('statis' , filename='profile_pics/'+current_user.image_file)
    return render_template('account.html' , title='Account' , image_file=image_file , form=form)




@app.route("/post/new" , methods=['POST' , 'GET'])
@login_required
def new_post():
    form= PostForm()
    if form.validate_on_submit():
        post = Post(title= form.title.data , content= form.content.data , author= current_user)
        db.session.add(post)
        db.session.commit()
        flash("  Your  Post has been created !" ,'success')
        return redirect(url_for('home'))
    return render_template('create_post.html' , title='Create Post' , form= form)
