from flask import render_template, url_for, flash, redirect, request, abort, Blueprint
from flaskblog import db
from flaskblog.posts.forms import PostForm
from flaskblog.models import  Post
from flask_login import  current_user,  login_required

posts = Blueprint('posts' , __name__)

@posts.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('main.home'))
    return render_template('create_post.html', title='New Post', form = form, legend = 'New Post')

@posts.route("/post/<int:post_id>")
def post(post_id):
    post = Post.query.get_or_404(post_id)
    return render_template('post.html', title=post.title, post = post)

@posts.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('posts.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')

@posts.route("/post/<int:post_id>/delete",  methods=['POST'])
@login_required
def delete_post(post_id):
    post = Post.query.get_or_404(post_id)
    if post.author != current_user:
        abort (403)
    db.session.delete(post)
    db.session.commit()
    flash('Your Post has been deleted!','success')
    return redirect(url_for('main.home'))


