Pairs with the backend structured payment errors (reason + metadata). The
frontend now maps reason codes to localized messages with metadata as
interpolation variables, and automatically localizes raw config-field names
(e.g. "certSerial" → "证书序列号") using the existing UI-label i18n
namespace.
- frontend/src/utils/apiError.ts
- extractApiErrorCode now prefers the string `reason` over the numeric HTTP
`code`; reason is granular enough to drive i18n lookup, HTTP code is not.
- New extractApiErrorMetadata to pull interpolation params off the error.
- New extractI18nErrorMessage(err, t, namespace, fallback): looks up
`<namespace>.<REASON>` in i18n and substitutes metadata. Before
substitution, `metadata.key` and `metadata.keys` (slash-joined) are
re-translated through `admin.settings.payment.field_<key>` so users see
"缺少必填项：证书序列号" instead of "缺少必填项：certSerial".
- frontend/src/i18n/locales/{zh,en}.ts
- Add payment.errors entries for every structured reason code returned by
the backend (PAYMENT_DISABLED, INVALID_AMOUNT, TOO_MANY_PENDING,
DAILY_LIMIT_EXCEEDED, NO_AVAILABLE_INSTANCE, PAYMENT_PROVIDER_MISCONFIGURED,
WXPAY_CONFIG_MISSING_KEY / INVALID_KEY_LENGTH / INVALID_KEY, NOT_FOUND,
FORBIDDEN, CONFLICT, INVALID_ORDER_TYPE, INVALID_STATUS,
BALANCE_NOT_ENOUGH, REFUND_AMOUNT_EXCEEDED, REFUND_FAILED, and more),
with placeholders for template variables.
- 13 payment-related Vue files
- Migrate catch-block error reporting from extractApiErrorMessage to
extractI18nErrorMessage(err, t, 'payment.errors', fallback).
- Remove the ad-hoc paymentErrorMap computed in SettingsView.vue, which the
new helper supersedes (it reads i18n directly via t).
- frontend/src/components/payment/providerConfig.ts
- wxpay: publicKey and publicKeyId are now required (was optional), matching
the pubkey-only verifier direction; certSerial is already required.
This PR is drop-in safe: reason-preferring extractApiErrorCode is backward
compatible with callers that pass their own i18nMap, and error codes missing
from i18n fall back to the existing message-based path.
Motivation: platform-certificate mode is being phased out by WeChat (2024-10+,
newly-provisioned merchants already cannot download platform certificates at
all), and wxpay config errors currently surface only when an order is being
created — admins have no feedback at save time. Also, errors were returned as
natural-language strings, leaving the frontend no way to localize them.
Changes:
- backend/internal/payment/provider/wxpay.go
- Replace fmt.Errorf with structured infraerrors.BadRequest errors:
- WXPAY_CONFIG_MISSING_KEY (metadata: key)
- WXPAY_CONFIG_INVALID_KEY_LENGTH (metadata: key, expected, actual)
- WXPAY_CONFIG_INVALID_KEY (metadata: key) for malformed PEMs
- Parse privateKey and publicKey PEMs in NewWxpay so malformed keys fail
at save time instead of at order creation.
- Keep the pubkey verifier (NewSHA256WithRSAPubkeyVerifier) as the single
supported verifier; no more loadKeyPair helper.
- backend/internal/service/payment_order.go invokeProvider
- If CreateProvider or CreatePayment returns a structured ApplicationError,
pass it through (optionally enriching metadata with provider/instance_id)
instead of wrapping it as generic PAYMENT_GATEWAY_ERROR — so clients see
the actual reason code (e.g. WXPAY_CONFIG_MISSING_KEY) and can localize.
- Simplify a few messages (TOO_MANY_PENDING, DAILY_LIMIT_EXCEEDED,
PAYMENT_GATEWAY_ERROR, NO_AVAILABLE_INSTANCE) to keyword form with
metadata for template variables.
- backend/internal/service/payment_config_providers.go
- New helper validateProviderConfig calls provider.CreateProvider at save
time. Enabled instances are validated on both Create and Update so admins
see config errors immediately in the dialog, not later at order creation.
- Disabled instances are not validated (half-filled drafts are allowed).
- backend/internal/payment/provider/wxpay_test.go
- Add generateTestKeyPair helper that produces valid RSA-2048 PKCS8/PKIX
PEMs per test, used by the valid-config baseline (prior fake strings no
longer pass the eager PEM check).
- Cover each structured-error branch (missing/invalid-length/malformed PEM).
