#!/usr/bin/env python3

from pathlib import Path
from datetime import date, timedelta
from fints.client import FinTS3PinTanClient
import csv
import json

# Konfiguration laden
config = {}

config_file = Path.home() / ".ing.conf"

if not config_file.exists():
    config_file = Path(__file__).parent / ".ing.conf"

with open(config_file, encoding="utf-8") as f:
    for line in f:
        line = line.strip()

        if not line or line.startswith("#"):
            continue

        if "=" not in line:
            continue

        key, value = line.split("=", 1)
        config[key] = value

USER = config["ING_USER"]
PIN = config["ING_PIN"]
TARGET_IBAN = config["ING_IBAN"]

BLZ = "50010517"

# Exportverzeichnis bestimmen
export_dir = Path.home() / "logs"

if not export_dir.exists():
    export_dir = Path(__file__).parent / "logs"

# Verzeichnis bei Bedarf anlegen
export_dir.mkdir(parents=True, exist_ok=True)

CSV_FILE = export_dir / "transactions.csv"
JSON_FILE = export_dir / "transactions.json"

client = FinTS3PinTanClient(
    BLZ,
    USER,
    PIN,
    "https://fints.ing.de/fints/",
    product_id="PythonFinTS"
)

export_data = []

with client:
    for account in client.get_sepa_accounts():

        if account.iban != TARGET_IBAN:
            continue

        transactions = client.get_transactions(
            account,
            start_date=date.today() - timedelta(days=7),
            end_date=date.today()
        )

        for transaction in transactions:

            data = transaction.data

            row = {
                "date": str(data.get("date", "")),
                "amount": str(data.get("amount", "")),
                "posting_text": data.get("posting_text", ""),
                "applicant_name": data.get("applicant_name", ""),
                "purpose": data.get("purpose", "")
            }

            export_data.append(row)

        break

# CSV schreiben
with open(CSV_FILE, "w", newline="", encoding="utf-8") as csvfile:
    writer = csv.DictWriter(
        csvfile,
        fieldnames=[
            "date",
            "amount",
            "posting_text",
            "applicant_name",
            "purpose"
        ],
        delimiter=";"
    )

    writer.writeheader()
    writer.writerows(export_data)

# JSON schreiben
with open(JSON_FILE, "w", encoding="utf-8") as jsonfile:
    json.dump(
        export_data,
        jsonfile,
        ensure_ascii=False,
        indent=2
    )