import type { components } from "./generated/schema";

enum ApiErrorCode {
	BankDependentRefunds = "BANK_DEPENDENT_REFUNDS",
	BankIntentConflict = "BANK_INTENT_CONFLICT",
	BankNotFound = "BANK_NOT_FOUND",
	BankRefundLimit = "BANK_REFUND_LIMIT",
	BankVersionConflict = "BANK_VERSION_CONFLICT",
	BankWriteConflict = "BANK_WRITE_CONFLICT",
	BondTickerAmbiguous = "BOND_TICKER_AMBIGUOUS",
	InvalidOperationsCursor = "INVALID_OPERATIONS_CURSOR",
	InvalidTbankToken = "INVALID_TBANK_TOKEN",
	NotFound = "NOT_FOUND",
	StockTickerAmbiguous = "STOCK_TICKER_AMBIGUOUS",
	TbankNotConnected = "TBANK_NOT_CONNECTED",
	TbankUnavailable = "TBANK_UNAVAILABLE",
	Unauthorized = "UNAUTHORIZED",
}

/**
Compile-time drift guard: collapses to `never` when any enum member is absent
from the generated ProblemDetails contract, so every call site fails to build.
*/
type ContractApiErrorCode
	= Exclude<
		`${ApiErrorCode}`,
		components["schemas"]["ProblemDetailsDto"]["code"]
	> extends never ? ApiErrorCode : never;

function apiErrorCode(error: unknown): string | undefined {
	return typeof error === "object" && error !== null && "code" in error
		? String(error.code)
		: undefined;
}

// Incoming codes are an open wire string; unknown values retain their fallback.
function isApiErrorCode(
	value: unknown,
	expected: ContractApiErrorCode,
): boolean {
	return value === expected;
}

// Confirmed loss of access to the brokerage data. UNAUTHORIZED is a session
// failure with its own refresh/sign-out path, so it is deliberately excluded.
function isBrokerageAccessLoss(code?: string): boolean {
	return [
		ApiErrorCode.InvalidTbankToken,
		ApiErrorCode.NotFound,
		ApiErrorCode.TbankNotConnected,
	].some(loss => isApiErrorCode(code, loss));
}

export { ApiErrorCode, apiErrorCode, isApiErrorCode, isBrokerageAccessLoss };