from __future__ import annotations

import unittest
from pathlib import Path

from carddemo.legacy_parser import (
    ACCOUNT_FIELDS,
    CUSTOMER_FIELDS,
    TRANSACTION_FIELDS,
    parse_ascii_file,
    parse_overpunch_int,
    parse_pending_authorizations,
    parse_user_security,
)


ROOT = Path(__file__).resolve().parents[2]
SOURCE = ROOT / "source"


class LegacyParserTests(unittest.TestCase):
    def test_overpunch_money_signs(self) -> None:
        self.assertEqual(parse_overpunch_int("00000001940{"), 19400)
        self.assertEqual(parse_overpunch_int("0000005047G"), 50477)
        self.assertEqual(parse_overpunch_int("0000009190}"), -91900)

    def test_customer_record_layout(self) -> None:
        rows = parse_ascii_file(SOURCE / "app" / "data" / "ASCII" / "custdata.txt", CUSTOMER_FIELDS, 500)
        self.assertEqual(len(rows), 50)
        self.assertEqual(rows[0]["customer_id"], 1)
        self.assertEqual(rows[0]["first_name"], "Immanuel")
        self.assertEqual(rows[0]["last_name"], "Kessler")

    def test_account_record_layout(self) -> None:
        rows = parse_ascii_file(SOURCE / "app" / "data" / "ASCII" / "acctdata.txt", ACCOUNT_FIELDS, 300)
        self.assertEqual(len(rows), 50)
        self.assertEqual(rows[0]["account_id"], 1)
        self.assertEqual(rows[0]["current_balance_cents"], 19400)
        self.assertEqual(rows[0]["credit_limit_cents"], 202000)

    def test_transaction_record_layout(self) -> None:
        rows = parse_ascii_file(SOURCE / "app" / "data" / "ASCII" / "dailytran.txt", TRANSACTION_FIELDS, 350)
        self.assertEqual(len(rows), 300)
        self.assertEqual(rows[0]["type_code"], "01")
        self.assertEqual(rows[0]["amount_cents"], 50477)
        self.assertEqual(rows[1]["amount_cents"], -91900)

    def test_user_security_decodes_ebcdic(self) -> None:
        users = parse_user_security(SOURCE / "app" / "data" / "EBCDIC" / "AWS.M2.CARDDEMO.USRSEC.PS")
        self.assertEqual(len(users), 10)
        self.assertEqual(users[0]["user_id"], "ADMIN001")
        self.assertEqual(users[0]["user_type"], "A")

    def test_pending_authorization_ims_unload_decodes_segments(self) -> None:
        parsed = parse_pending_authorizations(
            SOURCE
            / "app"
            / "app-authorization-ims-db2-mq"
            / "data"
            / "EBCDIC"
            / "AWS.M2.CARDDEMO.IMSDATA.DBPAUTP0.dat"
        )
        self.assertEqual(len(parsed["summaries"]), 21)
        self.assertEqual(len(parsed["details"]), 202)
        self.assertEqual(parsed["summaries"][0]["account_id"], 1)
        self.assertEqual(parsed["summaries"][0]["approved_auth_count"], 6)
        self.assertEqual(parsed["details"][0]["card_number"], "9680294154603697")
        self.assertEqual(parsed["details"][0]["auth_orig_date"], "231027")
        self.assertEqual(parsed["details"][0]["auth_resp_code"], "00")


if __name__ == "__main__":
    unittest.main()