from flask_login import current_user
from flask import request, redirect, url_for, abort, flash

from app import app, db
from config import V5Config
from app.utils.render import render
from app.forms.forum import TopicCreationForm, AnonymousTopicCreationForm
from app.models.forum import Forum
from app.models.topic import Topic
from app.models.thread import Thread
from app.models.comment import Comment
from app.models.users import Guest
from app.models.attachment import Attachment


@app.route('/forum/')
def forum_index():
    return render('/forum/index.html')

@app.route('/forum/<forum:f>/', methods=['GET', 'POST'])
def forum_page(f):
    if current_user.is_authenticated:
        form = TopicCreationForm()
    else:
        form = AnonymousTopicCreationForm()

    # TODO: do not hardcode name of news forums
    if form.validate_on_submit() and (
        # User can write anywhere
        (current_user.is_authenticated and current_user.priv('write-anywhere'))
        # Forum is news forum TODO: add good condition to check if it's news
        or ("/actus" in f.url and current_user.is_authenticated
            and current_user.priv('write-news'))
        # Forum is not news and is a leaf:
        or ("/actus" not in f.url and not f.sub_forums)) and (
            V5Config.ENABLE_GUEST_POST or current_user.is_authenticated):

        # Manage author
        if current_user.is_authenticated:
            author = current_user
        else:
            author = Guest(form.pseudo.data)
            db.session.add(author)

        # First create the thread, then the comment, then the topic
        th = Thread()
        db.session.add(th)
        db.session.commit()

        c = Comment(author, form.message.data, th)
        db.session.add(c)
        db.session.commit()

        th.set_top_comment(c)
        db.session.merge(th)

        t = Topic(f, author, form.title.data, th)
        db.session.add(t)
        db.session.commit()

        # Manage files
        attachments = []
        for file in form.attachments.data:
            if file.filename != "":
                a = Attachment(file, c)
                attachments.append((a, file))
                db.session.add(a)
        db.session.commit()
        for a, file in attachments:
            a.set_file(file)

        # Update member's xp and trophies
        if current_user.is_authenticated:
            current_user.add_xp(2) # 2 points for a topic
            current_user.update_trophies('new-post')

        flash('Le sujet a bien été créé', 'ok')
        return redirect(url_for('forum_topic', f=f, page=(t,1)))

    return render('/forum/forum.html', f=f, form=form)