from pathlib import Path
from typing import List

from toldg.models import Config, Transaction
from toldg.utils import category_to_bean

BEANCOUNT_TRANSACTION_TEMPLATE = """
{t.date} * {description}{tags}
    {account2:<40}  {t.debit:<6} {t.currency}
    {account1:<40}  {t.credit:<6} {t.currency}
    source_file: "{t.csv_file}"
    source_index: {t.index}
    source_row: "{t.row}"
"""


def format(t):
    t.date = t.date.replace("/", "-")
    tags = ""
    description = None
    if t.mapping:
        m = t.mapping
        t.account2 = m.account2

        if m.narration and m.payee:
            # A transaction may have an optional “payee” and/or a “narration.”
            description = f'"{m.payee}" "{m.narration}"'
        elif m.narration:
            # If you place a single string on a transaction line, it becomes its narration:
            description = f'"{m.narration}"'
        elif m.payee:
            # If you want to set just a payee, put an empty narration string:
            description = f'"{m.payee}" ""'
        if m.tags:
            tags = " #" + " #".join(m.tags)

    if description is None:
        description = f'"{t.description}"'

    if not t.debit.startswith("-"):
        t.debit = " " + t.debit
    if not t.credit.startswith("-"):
        t.credit = " " + t.credit

    if t.currency == "EUR":
        t.debit = t.debit.replace(".", "|").replace(",", ".").replace("|", ",")
        t.credit = t.credit.replace(".", "|").replace(",", ".").replace("|", ",")
    return BEANCOUNT_TRANSACTION_TEMPLATE.format(
        t=t,
        description=description,
        tags=tags,
        account1=category_to_bean(t.account1),
        account2=category_to_bean(t.account2),
    )


def render_to_file(transactions: List[Transaction], config: Config):
    content = "".join(format(t) for t in transactions)
    with open(config.output_file, "a") as f:
        f.write(content)