from flask import Flask, render_template, request, url_for
import logging
from werkzeug.utils import redirect

from .database import get_name_and_replies, record_reply


logger = logging.getLogger(__name__)

app = Flask('france_rsvp')


@app.route('/france/', methods=['GET', 'POST'])
def form():
    error = None
    if request.method == 'POST':
        if (
            'code' in request.form
            and len(request.form['code']) == 4
        ):
            code = request.form['code']
            try:
                get_name_and_replies(code)
            except ValueError:
                error = "Code invalide"
            else:
                return redirect(url_for('rsvp', code=code))
        else:
            error = "Code invalide"
    return render_template('form.html', error=error)


@app.route('/france/thanks')
def thanks():
    return render_template('thanks.html')


@app.route('/france/<code>', methods=['GET', 'POST'])
def rsvp(code):
    error = None
    if request.method == 'POST':
        try:
            adults = int(request.form['adults'], 10)
            children = int(request.form['children'], 10)
        except (KeyError, ValueError, OverflowError):
            logger.warning("Invalid reply", exc_info=True)
            error = "Nombres invalides"
        else:
            record_reply(code, adults, children)
            return redirect(url_for('thanks'))

    # Lookup guests from code
    adults = None
    kids = None
    try:
        name, adults, kids = get_name_and_replies(code)
    except ValueError:
        error = "Code invalide"

    return render_template(
        'rsvp.html',
        adults=adults,
        kids=kids,
        error=error,
    )