from flask import render_template, url_for,flash, redirect, request, abort
from flaskblog.models import User,Post
from flaskblog.forms import RegistrationForm, LoginForm, UpdateAccountForm,PostForm
from flaskblog import app, db, bcrypt
from flask_login import login_user, current_user,logout_user, login_required
import secrets
import os
from PIL import Image

# posts = [
#     {
#         'author': 'corey schafer',
#         'title' : 'blog post',
#         'content': 'first post content',
#         'date_posted': 'April 20, 2020'
#     },
#     {
#         'author': 'clement idemudo',
#         'title' : 'blog post 2',
#         'content': 'second post content',
#         'date_posted': 'march 20, 2020'
#     }
# ]

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

@app.route('/blog-details.html')
def blog():
    return render_template('blog-details.html')


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

@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():
        hashed_password = bcrypt.generate_password_hash(form.password.data).decode('utf-8')
        user = User(username=form.username.data, email = form.email.data, password = hashed_password)
        db.session.add(user)
        db.session.commit()
        flash(f'Your account as been created and you are now able to login',category='success')
        print('sucessufuly registered')
        return redirect(url_for('home'))
    print('registration unsuccessful')
    return render_template('register.html', title ='Register', form = form)
    


@app.route('/login', methods=['GET','POST'])
def login():
    form = LoginForm()
    if form.validate_on_submit():
        # if form.email.data == 'clemcy9@gmail.com' and form.password.data == 'password':
            # flash("you've been log in",category='success')
            # return redirect(url_for('home'))
        user = User.query.filter_by(email=form.email.data).first()
        print(f'user email is {user}')
        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. check username and password',category='danger')

    return render_template('login.html', title ='Login', form = form)



@app.route('/logout', methods=['GET','POST'])
def logout():
    logout_user()
    return redirect(url_for('home'))

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

    output_size = (150,150)
    i = Image.open(form_picture)
    i.thumbnail(output_size)
    i.save(picture_path)
    # form_picture.save(picture_path)
    return picture_fn

@app.route('/account', methods=['GET','POST'])
@login_required
def account():
    form = UpdateAccountForm()
    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()
        flash('Update successful','success')
        return redirect(url_for('account'))
    elif request.method == 'GET':
        form.username.data == current_user.username
        form.email.data == current_user.email
    image_file = url_for('static',filename='profile_pic/' + current_user.image_file)
    print(f'image is {current_user.image_file}')
    return render_template('account.html',title='Account',image_file=image_file,form=form)



@app.route('/post/new', methods=['GET','POST'])
@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='New Post',form =form, legend='Update Post')




@app.route('/post/<int:post_id>', methods=['GET','POST'])
# @login_required
def post(post_id):
    post = Post.query.get_or_404(post_id)
    return render_template('post.html', title=post.title, post=post)


@app.route('/post/<int:post_id>/update', methods=['GET','POST'])
@login_required
def update_post(post_id):
    post = Post.query.get_or_404(post_id)
    if post.author != current_user:
        abort(403)
    form = PostForm()
    if form.validate_on_submit():
        post.title = form.title.data
        post.content = form.content.data
        db.session.commit()
        flash('Your post has been updated!','success')
        return redirect(url_for('post', post_id=post.id))
    elif request.method == 'GET':
        form.title.data = post.title
        form.content.data = post.content
        
    return render_template('create_post.html',title = 'Update Post', form = form, legend='Update Post')