import re
import subprocess
from datetime import date

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):
    g.lang_code = values.pop("lang_code")


@root_page.route("/", methods=("GET", "POST"))
def index():
    form = MembershipForm()

    choices = [
        ("cash", gettext("by cash")),
        ("wire transfer", gettext("by wire transfer")),
    ]

    for k, v in (
        ("DIGICASH_ENABLED", ("digicash", gettext("by DigiCash"))),
        ("BITCOIN_ENABLED", ("bitcoin", gettext("by bitcoin"))),
        ("ETHEREUM_ENABLED", ("ethereum", gettext("by ethereum"))),
        ("MONERO_ENABLED", ("monero", gettext("by monero"))),
        ("ZCASH_ENABLED", ("zcash", gettext("by zcash"))),
    ):
        if current_app.config[k]:
            choices.append(v)
    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":
            price = current_app.config["REGULAR_FEE"]
            xml_data["voting"] = 1

        if form.starving.data:
            price = 1

        if form.starving.data:
            xml_data["status"] = "Starving"
        elif form.minor_member.data or form.student.data:
            xml_data["status"] = "Student"
        elif form.membership.data == "supporting":
            xml_data["status"] = "Supporter"
        else:
            xml_data["status"] = "Regular"

        xml_data["name"] = form.fullname.data
        xml_data["birthday"] = form.birthday.data
        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 == "bitcoin":
            price = subprocess.check_output(
                [current_app.config["BITCOIN_CONVERSION_SCRIPT"], str(price)]
            ).decode("utf-8")
        elif form.payment.data == "ethereum":
            price = subprocess.check_output(
                [current_app.config["ETHEREUM_CONVERSION_SCRIPT"], str(price)]
            ).decode("utf-8")
        elif form.payment.data == "monero":
            price = subprocess.check_output(
                [current_app.config["MONERO_CONVERSION_SCRIPT"], str(price)]
            ).decode("utf-8")
        elif form.payment.data == "zcash":
            price = subprocess.check_output(
                [current_app.config["ZCASH_CONVERSION_SCRIPT"], str(price)]
            ).decode("utf-8")
        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)