增加支付逻辑
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@@ -0,0 +1,331 @@
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package postgres
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import (
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"context"
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"database/sql"
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"encoding/json"
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"errors"
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"fmt"
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"regexp"
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"time"
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"git.nianxx.cn/wangxuming/NianAIGC/backend/internal/payments"
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"github.com/jackc/pgx/v5/pgconn"
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)
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const paymentOrderColumns = `id, organization_id, account_id, request_key, mch_id, app_id,
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amount_fen, currency, status, COALESCE(code_url, ''), COALESCE(transaction_id, ''),
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created_at, updated_at, expires_at, paid_at`
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const createPaymentOrderSQL = `INSERT INTO public.payment_orders
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(id, organization_id, account_id, request_key, mch_id, app_id, amount_fen, currency, expires_at)
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SELECT $1::text, organization.id, account.id, $4::text, $5::text, $6::text,
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$7::bigint, $8::text, $9::timestamptz
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FROM public.platform_organizations AS organization
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JOIN public.platform_users AS account ON account.id = $3::text
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WHERE organization.id = $2::text AND organization.status = 'active'
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AND account.status = 'active' AND account.organization_id = organization.id
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AND account.role IN ('organization_admin', 'super_admin')
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ON CONFLICT DO NOTHING
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RETURNING ` + paymentOrderColumns
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const getPaymentOrderSQL = `SELECT ` + paymentOrderColumns + ` FROM public.payment_orders WHERE id = $1::text`
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const getPaymentOrderByRequestSQL = `SELECT ` + paymentOrderColumns + ` FROM public.payment_orders WHERE organization_id = $1::text AND request_key = $2::text`
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const listPaymentOrdersSQL = `SELECT ` + paymentOrderColumns + ` FROM public.payment_orders WHERE organization_id = $1::text ORDER BY created_at DESC, id DESC LIMIT $2::integer`
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const pendingPaymentOrdersSQL = `SELECT ` + paymentOrderColumns + ` FROM public.payment_orders WHERE status = 'pending' ORDER BY updated_at ASC, created_at ASC, id ASC LIMIT $1::integer`
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const updatePendingPaymentOrderSQL = `UPDATE public.payment_orders SET
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code_url = CASE WHEN $2::text = '' THEN code_url ELSE $2::text END,
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updated_at = now()
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WHERE id = $1::text AND status = 'pending'
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RETURNING ` + paymentOrderColumns
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const closePaymentOrderSQL = `UPDATE public.payment_orders SET
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status = 'closed', code_url = NULL, updated_at = now()
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WHERE id = $1::text AND status = 'pending'
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RETURNING ` + paymentOrderColumns
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const lockPaymentOrderSQL = `SELECT ` + paymentOrderColumns + ` FROM public.payment_orders WHERE id = $1::text FOR UPDATE`
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const paidPaymentOrderSQL = `UPDATE public.payment_orders SET
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status = 'paid', transaction_id = $2::text, code_url = NULL,
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paid_at = $3::timestamptz, updated_at = now()
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WHERE id = $1::text AND status IN ('pending', 'closed')
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RETURNING ` + paymentOrderColumns
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var paymentKeyPattern = regexp.MustCompile(`^[A-Za-z0-9_-]+$`)
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func (db *Database) paymentQuerier() (Querier, error) {
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if db == nil || db.config.Backend != BackendPostgres || db.querier == nil {
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return nil, payments.ErrUnavailable
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}
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return db.querier, nil
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}
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func validPaymentKey(s string, maxLength int) bool {
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return len(s) > 0 && len(s) <= maxLength && paymentKeyPattern.MatchString(s)
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}
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func (db *Database) CreatePaymentOrder(ctx context.Context, input payments.Order) (payments.Order, error) {
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q, err := db.paymentQuerier()
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if err != nil {
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return payments.Order{}, err
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}
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if !validPaymentKey(input.ID, 32) || !validPaymentKey(input.RequestKey, 64) ||
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input.OrganizationID == "" || input.AccountID == "" || input.MchID == "" || input.AppID == "" ||
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len(input.MchID) > 64 || len(input.AppID) > 64 || input.Currency != "CNY" ||
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input.ExpiresAt.IsZero() || !input.ExpiresAt.After(time.Now()) {
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return payments.Order{}, payments.ErrConflict
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}
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if input.AmountFen < 1 || input.AmountFen > 1_000_000 {
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return payments.Order{}, payments.ErrInvalidAmount
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}
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created, found, err := queryPaymentOrder(ctx, q, createPaymentOrderSQL,
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input.ID, input.OrganizationID, input.AccountID, input.RequestKey,
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input.MchID, input.AppID, input.AmountFen, input.Currency, input.ExpiresAt)
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if err != nil {
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return payments.Order{}, paymentSQLError("create payment order", err)
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}
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if found {
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return created, nil
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}
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previous, found, err := queryPaymentOrder(ctx, q, getPaymentOrderByRequestSQL, input.OrganizationID, input.RequestKey)
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if err != nil {
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return payments.Order{}, paymentSQLError("read payment request", err)
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}
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if !found || previous.AccountID != input.AccountID || previous.AmountFen != input.AmountFen ||
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previous.Currency != input.Currency || previous.AppID != input.AppID || previous.MchID != input.MchID {
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return payments.Order{}, payments.ErrConflict
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}
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return previous, nil
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}
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func (db *Database) GetPaymentOrder(ctx context.Context, id string) (payments.Order, error) {
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q, err := db.paymentQuerier()
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if err != nil {
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return payments.Order{}, err
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}
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order, found, err := queryPaymentOrder(ctx, q, getPaymentOrderSQL, id)
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if err != nil {
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return payments.Order{}, paymentSQLError("get payment order", err)
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}
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if !found {
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return payments.Order{}, payments.ErrNotFound
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}
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return order, nil
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}
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func (db *Database) ListPaymentOrders(ctx context.Context, organizationID string, limit int) ([]payments.Order, error) {
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q, err := db.paymentQuerier()
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if err != nil {
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return nil, err
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}
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if organizationID == "" {
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return nil, payments.ErrConflict
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}
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return queryPaymentOrders(ctx, q, listPaymentOrdersSQL, organizationID, boundedPaymentLimit(limit))
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}
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func (db *Database) PendingPaymentOrders(ctx context.Context, limit int) ([]payments.Order, error) {
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q, err := db.paymentQuerier()
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if err != nil {
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return nil, err
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}
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return queryPaymentOrders(ctx, q, pendingPaymentOrdersSQL, boundedPaymentLimit(limit))
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}
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func boundedPaymentLimit(limit int) int {
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if limit < 1 {
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return 1
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}
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if limit > 500 {
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return 500
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}
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return limit
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}
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func (db *Database) UpdatePaymentOrder(ctx context.Context, id, status, codeURL string) (payments.Order, error) {
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q, err := db.paymentQuerier()
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if err != nil {
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return payments.Order{}, err
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}
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if id == "" || len(codeURL) > 2048 || (status != payments.StatusPending && status != payments.StatusClosed) {
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return payments.Order{}, payments.ErrConflict
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}
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statement := closePaymentOrderSQL
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args := []any{id}
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if status == payments.StatusPending {
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statement = updatePendingPaymentOrderSQL
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args = append(args, codeURL)
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}
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order, found, err := queryPaymentOrder(ctx, q, statement, args...)
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if err != nil {
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return payments.Order{}, paymentSQLError("update payment order", err)
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}
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if found {
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return order, nil
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}
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return db.GetPaymentOrder(ctx, id)
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}
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func (db *Database) SettlePaymentOrder(ctx context.Context, transaction payments.Transaction) (payments.Order, error) {
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if _, err := db.paymentQuerier(); err != nil || db.transactions == nil {
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return payments.Order{}, payments.ErrUnavailable
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}
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if transaction.OrderID == "" || transaction.MchID == "" || transaction.AppID == "" ||
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transaction.TransactionID == "" || transaction.TradeState != "SUCCESS" ||
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transaction.Currency != "CNY" || transaction.AmountFen < 1 || transaction.AmountFen > 1_000_000 {
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return payments.Order{}, payments.ErrVerification
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}
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tx, err := db.transactions.Begin(ctx)
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if err != nil {
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return payments.Order{}, paymentSQLError("begin payment settlement", err)
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}
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committed := false
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defer func() {
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if !committed {
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_ = tx.Rollback(ctx)
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}
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}()
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order, found, err := queryPaymentOrder(ctx, tx, lockPaymentOrderSQL, transaction.OrderID)
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if err != nil {
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return payments.Order{}, paymentSQLError("lock payment order", err)
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}
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if !found {
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return payments.Order{}, payments.ErrNotFound
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}
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if order.MchID != transaction.MchID || order.AppID != transaction.AppID ||
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order.AmountFen != transaction.AmountFen || order.Currency != transaction.Currency {
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return payments.Order{}, payments.ErrVerification
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}
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if order.Status == payments.StatusPaid {
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if order.TransactionID != transaction.TransactionID {
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return payments.Order{}, payments.ErrConflict
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}
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if err := tx.Commit(ctx); err != nil {
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return payments.Order{}, paymentSQLError("commit payment replay", err)
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}
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committed = true
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return order, nil
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}
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if order.Status != payments.StatusPending && order.Status != payments.StatusClosed {
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return payments.Order{}, payments.ErrConflict
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}
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paidAt := transaction.SuccessTime
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if paidAt.IsZero() {
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paidAt = time.Now().UTC()
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}
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paid, found, err := queryPaymentOrder(ctx, tx, paidPaymentOrderSQL, order.ID, transaction.TransactionID, paidAt)
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if err != nil {
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return payments.Order{}, paymentSQLError("record payment transaction", err)
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}
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if !found {
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return payments.Order{}, payments.ErrConflict
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}
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metadata, err := json.Marshal(map[string]string{
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"source": "wechat_native", "paymentOrderId": order.ID,
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"transactionId": transaction.TransactionID, "mchId": transaction.MchID,
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"appId": transaction.AppID, "initiatedByAccountId": order.AccountID,
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})
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if err != nil {
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return payments.Order{}, err
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}
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rows, err := tx.Query(ctx, PostWalletEntrySQL,
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"wechat-native-entry:"+order.ID, order.OrganizationID, nil, nil,
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"recharge", order.AmountFen, "CNY", "wechat-native:"+order.MchID+":"+order.ID,
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"微信扫码充值", json.RawMessage(metadata))
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if err != nil {
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return payments.Order{}, paymentSQLError("post payment wallet credit", err)
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}
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if !rows.Next() {
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rowErr := rows.Err()
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rows.Close()
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if rowErr != nil {
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return payments.Order{}, paymentSQLError("read payment wallet credit", rowErr)
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}
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return payments.Order{}, fmt.Errorf("payment wallet credit returned no row")
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}
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var posting WalletEntry
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if err := rows.Scan(&posting.LedgerID, &posting.BalanceAfterFen, &posting.BalanceFen,
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&posting.TotalRechargedFen, &posting.TotalChargedFen, &posting.CreatedAt,
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&posting.UpdatedAt, &posting.DeltaFen); err != nil {
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rows.Close()
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return payments.Order{}, paymentSQLError("scan payment wallet credit", err)
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}
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rowErr := rows.Err()
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rows.Close()
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if rowErr != nil {
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return payments.Order{}, paymentSQLError("complete payment wallet credit", rowErr)
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}
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if posting.DeltaFen != order.AmountFen || posting.LedgerID != "wechat-native-entry:"+order.ID {
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return payments.Order{}, payments.ErrConflict
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}
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if err := tx.Commit(ctx); err != nil {
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// The commit result can be ambiguous. A replay with this transaction ID
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// resolves it safely because paid status and wallet entry commit together.
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return payments.Order{}, paymentSQLError("commit payment settlement; query or replay the order", err)
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}
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committed = true
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return paid, nil
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}
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func queryPaymentOrder(ctx context.Context, q Querier, statement string, args ...any) (payments.Order, bool, error) {
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rows, err := q.Query(ctx, statement, args...)
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if err != nil {
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return payments.Order{}, false, err
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}
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defer rows.Close()
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if !rows.Next() {
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return payments.Order{}, false, rows.Err()
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}
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order, err := scanPaymentOrder(rows)
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if err != nil {
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return payments.Order{}, false, err
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}
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return order, true, rows.Err()
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}
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func queryPaymentOrders(ctx context.Context, q Querier, statement string, args ...any) ([]payments.Order, error) {
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rows, err := q.Query(ctx, statement, args...)
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if err != nil {
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return nil, paymentSQLError("list payment orders", err)
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}
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defer rows.Close()
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out := make([]payments.Order, 0)
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for rows.Next() {
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order, err := scanPaymentOrder(rows)
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if err != nil {
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return nil, paymentSQLError("scan payment order", err)
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}
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out = append(out, order)
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}
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return out, paymentSQLError("read payment orders", rows.Err())
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}
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func scanPaymentOrder(rows Rows) (payments.Order, error) {
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var order payments.Order
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var paidAt sql.NullTime
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err := rows.Scan(&order.ID, &order.OrganizationID, &order.AccountID, &order.RequestKey,
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&order.MchID, &order.AppID, &order.AmountFen, &order.Currency, &order.Status,
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&order.CodeURL, &order.TransactionID, &order.CreatedAt, &order.UpdatedAt,
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&order.ExpiresAt, &paidAt)
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if err != nil {
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return payments.Order{}, err
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}
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if paidAt.Valid {
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order.PaidAt = &paidAt.Time
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}
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if order.Status != payments.StatusPending {
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order.CodeURL = ""
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}
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return order, nil
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}
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func paymentSQLError(action string, err error) error {
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if err == nil {
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return nil
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}
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var pgErr *pgconn.PgError
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if errors.As(err, &pgErr) && (pgErr.Code == "23505" || pgErr.Code == "23503" || pgErr.Code == "23514") {
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return fmt.Errorf("%w: %s: %v", payments.ErrConflict, action, err)
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}
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return fmt.Errorf("%s: %w", action, err)
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}
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var _ payments.Repository = (*Database)(nil)
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