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

from app import app, db
from config import V5Config
from app.utils.render import render
from app.forms.forum import CommentForm, AnonymousCommentForm
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/<forum:f>/<topicpage:page>', methods=['GET', 'POST'])
def forum_topic(f, page):
    t, page = page

    # Quick n' dirty workaround to converters
    if f != t.forum:
        abort(404)

    if current_user.is_authenticated:
        form = CommentForm()
    else:
        form = AnonymousCommentForm()

    if form.validate_on_submit() 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)

        # Create comment
        c = Comment(author, form.message.data, t.thread)
        db.session.add(c)
        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(1)  # 1 point for a comment
            current_user.update_trophies('new-post')

        flash('Message envoyé', 'ok')
        # Redirect to empty the form
        return redirect(url_for('forum_topic', f=f, page=(t,"fin"),
            _anchor=c.id))

    # Update views
    t.views += 1
    db.session.merge(t)
    db.session.commit()

    if page == -1:
        page = (t.thread.comments.count() - 1) \
            // Thread.COMMENTS_PER_PAGE + 1

    comments = t.thread.comments.paginate(page,
        Thread.COMMENTS_PER_PAGE, True)

    return render('/forum/topic.html', t=t, form=form, comments=comments)