import re

import subprocess

from datetime import date

import requests

from flask import Blueprint, current_app, g, render_template, request

from flask_babel import gettext

from flask_weasyprint import HTML, render_pdf

from .forms import MembershipForm

root_page = Blueprint("root", __name__, url_prefix="/<lang_code>")

xml_template = "<member><numm>{name}</numm><gebuertsdag>{birthday:%d.%m.%Y}</gebuertsdag><address>{address}</address><nick>{username}</nick><email>{email}</email><status>{status}</status><stemmrecht>{voting}</stemmrecht></member>"

@root_page.url_defaults

def add_lang_code(endpoint, values):

    values.setdefault("lang_code", g.lang_code)

@root_page.url_value_preprocessor

def pull_lang_code(endpoint, values):

    lang_code = values.pop("lang_code")

    if lang_code != "favicon.ico":

        g.lang_code = lang_code

@root_page.route("/", methods=("GET", "POST"))

def index():

    form = MembershipForm()

    choices = [

        ("cash", gettext("by cash")),

        ("wire transfer", gettext("by wire transfer")),

    ]

    if current_app.config["DIGICASH_ENABLED"]:

        choices.append(("digicash", gettext("by DigiCash")))

    for cryptocurrency_label, options in current_app.config["CRYPTOCURRENCIES"].items():

        if options["ENABLED"]:

            choices.append(

                (

                    cryptocurrency_label,

                    " ".join((gettext("by"), cryptocurrency_label.title())),

                ),

            )

    form.payment.choices = choices

    if form.validate_on_submit():

        xml_data = {}

        if (

            form.minor_member.data

            or form.student.data

            or form.membership.data == "supporting"

        ):

            price = current_app.config["SUPPORTING_FEE"]

            xml_data["voting"] = 0

        elif form.membership.data == "regular":

            xml_data["voting"] = 1

        if form.starving.data:

            price = 1

            status = "Starving"

        elif form.minor_member.data or form.student.data:

            status = "Student"

        elif form.membership.data == "supporting":

            status = "Supporter"

        else:

            status = "Regular"

        xml_data["status"] = status

        xml_data["name"] = form.fullname.data

        xml_data["birthday"] = (

            form.birthday.data if form.birthday.data is not None else date(9999, 12, 12)

        )

        xml_data["username"] = form.username.data

        xml_data["email"] = form.email.data

        xml_data["address"] = " ".join(

            (

                form.street.data,

                form.zip.data,

                form.city.data,

                form.state.data,

                form.country.data,

            )

        )

        xml_data["address"] = re.sub("\s+", " ", xml_data["address"])

        if form.payment.data in current_app.config["CRYPTOCURRENCIES"]:

            current_conversion_r = requests.get(

                current_app.config["CONVERSION_URL"], timeout=30

            )

            try:

                current_conversion_r.raise_for_status()

            except:

                return 500

            else:

                current_conversion = current_conversion_r.json()

                commodity = current_app.config["CRYPTOCURRENCIES"][form.payment.data][

                    "COMMODITY"

                ]

                price = current_conversion[commodity][status.upper()]

        elif form.payment.data == "digicash":

            price = price * 100

        now = date.today()

        year = now.year

        xml_data["date"] = now

        xml = xml_template.format(**xml_data)

        html = render_template(

            "member.html", form=form, price=price, year=year, xml=xml

        )

        return render_pdf(HTML(string=html))

    return render_template("index.html", form=form)