import locale
import numbers
import os

from starlette.templating import Jinja2Templates

TRANSACTION_TYPE_DE = {
    "deposit": "Einzahlung",
    "withdrawal": "Auszahlung",
    "expense": "Auslage",
    "order": "Einkauf",
}

UNITS_OF_MEASURE = {"piece": "Stück"}


def format_number(value: float):
    try:
        return f"{value:.2f}".replace(".", ",")
    except TypeError:
        return value


def get_jinja_renderer() -> Jinja2Templates:
    renderer = Jinja2Templates(directory="src/allmende_payment_system/templates")
    renderer.env.filters["transaction_type_de"] = lambda x: TRANSACTION_TYPE_DE[x]
    renderer.env.filters["units_of_measure_de"] = lambda x: UNITS_OF_MEASURE.get(x, x)
    renderer.env.filters["format_number"] = format_number
    renderer.env.filters["timestamp_de"] = lambda x: x.strftime("%d.%m.%Y %H:%M")

    renderer.env.globals["production_mode"] = "APS_PRODUCTION_MODE" in os.environ
    return renderer