feat(payment): add complete payment system with multi-provider support

Add a full payment and subscription system supporting EasyPay (Alipay/WeChat),
Stripe, and direct Alipay/WeChat Pay providers with multi-instance load balancing.

backend/ent/paymentauditlog/paymentauditlog.go

@@ -0,0 +1,96 @@
+// Code generated by ent, DO NOT EDIT.
+
+package paymentauditlog
+
+import (
+	"time"
+
+	"entgo.io/ent/dialect/sql"
+)
+
+const (
+	// Label holds the string label denoting the paymentauditlog type in the database.
+	Label = "payment_audit_log"
+	// FieldID holds the string denoting the id field in the database.
+	FieldID = "id"
+	// FieldOrderID holds the string denoting the order_id field in the database.
+	FieldOrderID = "order_id"
+	// FieldAction holds the string denoting the action field in the database.
+	FieldAction = "action"
+	// FieldDetail holds the string denoting the detail field in the database.
+	FieldDetail = "detail"
+	// FieldOperator holds the string denoting the operator field in the database.
+	FieldOperator = "operator"
+	// FieldCreatedAt holds the string denoting the created_at field in the database.
+	FieldCreatedAt = "created_at"
+	// Table holds the table name of the paymentauditlog in the database.
+	Table = "payment_audit_logs"
+)
+
+// Columns holds all SQL columns for paymentauditlog fields.
+var Columns = []string{
+	FieldID,
+	FieldOrderID,
+	FieldAction,
+	FieldDetail,
+	FieldOperator,
+	FieldCreatedAt,
+}
+
+// ValidColumn reports if the column name is valid (part of the table columns).
+func ValidColumn(column string) bool {
+	for i := range Columns {
+		if column == Columns[i] {
+			return true
+		}
+	}
+	return false
+}
+
+var (
+	// OrderIDValidator is a validator for the "order_id" field. It is called by the builders before save.
+	OrderIDValidator func(string) error
+	// ActionValidator is a validator for the "action" field. It is called by the builders before save.
+	ActionValidator func(string) error
+	// DefaultDetail holds the default value on creation for the "detail" field.
+	DefaultDetail string
+	// DefaultOperator holds the default value on creation for the "operator" field.
+	DefaultOperator string
+	// OperatorValidator is a validator for the "operator" field. It is called by the builders before save.
+	OperatorValidator func(string) error
+	// DefaultCreatedAt holds the default value on creation for the "created_at" field.
+	DefaultCreatedAt func() time.Time
+)
+
+// OrderOption defines the ordering options for the PaymentAuditLog queries.
+type OrderOption func(*sql.Selector)
+
+// ByID orders the results by the id field.
+func ByID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldID, opts...).ToFunc()
+}
+
+// ByOrderID orders the results by the order_id field.
+func ByOrderID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldOrderID, opts...).ToFunc()
+}
+
+// ByAction orders the results by the action field.
+func ByAction(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldAction, opts...).ToFunc()
+}
+
+// ByDetail orders the results by the detail field.
+func ByDetail(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldDetail, opts...).ToFunc()
+}
+
+// ByOperator orders the results by the operator field.
+func ByOperator(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldOperator, opts...).ToFunc()
+}
+
+// ByCreatedAt orders the results by the created_at field.
+func ByCreatedAt(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldCreatedAt, opts...).ToFunc()
+}