from . import Blueprint, db, \
        current_user, login_required, \
        templated, redirect, request

from ..model import Category

mod = Blueprint('categories', __name__)

@mod.route('/', methods=('GET', 'POST'))
@login_required
@templated
def manage():
    """Workhorse: List and edit/create. For historic reasons,
    everything is done in JavaScript.

    NB: No deletion possible yet.
    """
    if request.method == 'GET':
        categories = Category.of(current_user).order_by(Category.name).all()

        return { 'cats' : categories }
    else:
        for id, name in request.form.items():
            if id.startswith('n-'):
                db.session.add(Category(name = name, user = current_user))
            else:
                Category.get(id).name = name

        db.session.commit()

        return redirect('.manage')