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


# 'posts' will be the name of the blueprint
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() # no need to use session.add as these are already in the DB, we're just updating them
        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'))


@posts.route("/search")
def search():
    posts = Post.query.whoosh_search(request.args.get('query')).all()
    search = SearchForm()
    if posts:
        flash('Here are your search results:', 'success')
    else:
        flash("No items found containing that term. (Hint: avoid common words such as 'the', 'it', 'what', etc.)", 'danger')
    return render_template('search_results.html', title='Search Results', posts=posts, form=search)