from __future__ import annotations

from dataclasses import dataclass
import unicodedata


@dataclass(frozen=True)
class BankTemplate:
    template_id: str
    bank_name: str
    columns: dict[str, tuple[str, ...]]
    required: tuple[str, ...]
    version: int = 1


def normalize_header(value: object) -> str:
    if value is None:
        return ""
    text = unicodedata.normalize("NFKC", str(value)).strip().casefold()
    return "".join(text.split())


def _aliases(*values: str) -> tuple[str, ...]:
    return tuple(normalize_header(value) for value in values)


TEMPLATES: tuple[BankTemplate, ...] = (
    BankTemplate(
        template_id="citic-account-detail-v1",
        bank_name="中信银行",
        columns={
            "transaction_date": _aliases("交易日期"),
            "transaction_time": _aliases("交易时间"),
            "counterparty_account": _aliases("对方账号"),
            "counterparty_name": _aliases("对方账户名称"),
            "counterparty_bank": _aliases("对方账号开户网点名称"),
            "expense": _aliases("借方发生额"),
            "income": _aliases("贷方发生额"),
            "balance": _aliases("账户余额"),
            "summary": _aliases("摘要"),
            "purpose": _aliases("附言"),
            "currency": _aliases("币种"),
            "own_account": _aliases("交易账号"),
            "reference": _aliases("柜员交易号", "发起方流水号"),
        },
        required=(
            "transaction_date",
            "transaction_time",
            "counterparty_account",
            "expense",
            "income",
            "balance",
        ),
    ),
    BankTemplate(
        template_id="abc-account-detail-v1",
        bank_name="中国农业银行",
        columns={
            "transaction_at": _aliases("交易时间"),
            "income": _aliases("收入金额"),
            "expense": _aliases("支出金额"),
            "balance": _aliases("账户余额"),
            "counterparty_account": _aliases("对方账号"),
            "counterparty_name": _aliases("对方户名"),
            "counterparty_bank": _aliases("对方开户行"),
            "summary": _aliases("摘要"),
        },
        required=(
            "transaction_at",
            "income",
            "expense",
            "balance",
            "counterparty_account",
            "counterparty_name",
            "summary",
        ),
    ),
    BankTemplate(
        template_id="icbc-history-detail-v1",
        bank_name="中国工商银行",
        columns={
            "reference": _aliases("凭证号"),
            "own_account": _aliases("本方账号"),
            "counterparty_account": _aliases("对方账号"),
            "transaction_at": _aliases("交易时间"),
            "expense": _aliases("借方发生额"),
            "income": _aliases("贷方发生额"),
            "summary": _aliases("摘要"),
            "purpose": _aliases("用途"),
            "counterparty_name": _aliases("对方单位名称"),
            "balance": _aliases("余额"),
        },
        required=(
            "reference",
            "own_account",
            "transaction_at",
            "expense",
            "income",
            "counterparty_name",
            "balance",
        ),
    ),
    BankTemplate(
        template_id="ccb-account-detail-v1",
        bank_name="中国建设银行",
        columns={
            "own_account": _aliases("客户账号"),
            "own_name": _aliases("账户名称"),
            "transaction_at": _aliases("交易时间"),
            "expense": _aliases("借方发生额（支取）"),
            "income": _aliases("贷方发生额（收入）"),
            "balance": _aliases("余额"),
            "currency": _aliases("币种"),
            "counterparty_name": _aliases("对方户名"),
            "counterparty_account": _aliases("对方账号"),
            "counterparty_bank": _aliases("对方开户机构"),
            "summary": _aliases("摘要"),
            "purpose": _aliases("备注"),
        },
        required=(
            "own_account",
            "transaction_at",
            "expense",
            "income",
            "balance",
            "counterparty_account",
        ),
    ),
    BankTemplate(
        template_id="henan-rural-history-v1",
        bank_name="河南农商银行",
        columns={
            "transaction_at": _aliases("交易时间"),
            "reference": _aliases("交易流水号"),
            "income": _aliases("收入"),
            "expense": _aliases("支出"),
            "balance": _aliases("账户余额"),
            "summary": _aliases("交易类型"),
            "counterparty_account": _aliases("对方帐号"),
            "counterparty_name": _aliases("对方户名"),
            "counterparty_bank": _aliases("交易网点"),
            "purpose": _aliases("备注"),
        },
        required=(
            "transaction_at",
            "reference",
            "income",
            "expense",
            "balance",
            "counterparty_account",
            "counterparty_name",
        ),
    ),
    BankTemplate(
        template_id="bank-of-zhengzhou-detail-v1",
        bank_name="郑州银行",
        columns={
            "transaction_at": _aliases("交易时间"),
            "income": _aliases("收入金额（元）"),
            "expense": _aliases("支出金额（元）"),
            "balance": _aliases("账户余额（元）"),
            "counterparty_name": _aliases("对方户名"),
            "counterparty_account": _aliases("对方账号"),
            "counterparty_bank": _aliases("对方账户开户行"),
            "purpose": _aliases("用途"),
            "summary": _aliases("摘要"),
            "currency": _aliases("币种"),
            "reference": _aliases("交易流水号"),
        },
        required=(
            "transaction_at",
            "income",
            "expense",
            "balance",
            "counterparty_account",
            "reference",
        ),
    ),
)