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backend/sdk/cliproxy/auth/weight.go

@@ -0,0 +1,49 @@
+package auth
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/router-for-me/CLIProxyAPI/v7/internal/credentialweight"
+)
+
+// ValidateAuthWeight validates every explicit credential weight source.
+func ValidateAuthWeight(auth *Auth) error {
+	if auth == nil {
+		return nil
+	}
+	if rawWeight, ok := auth.Attributes[AttributeWeight]; ok {
+		if _, errParse := credentialweight.ParseString(rawWeight); errParse != nil {
+			return fmt.Errorf("invalid attributes weight: %w", errParse)
+		}
+	}
+	if rawWeight, ok := auth.Metadata[AttributeWeight]; ok {
+		if _, errParse := credentialweight.ParseValue(rawWeight); errParse != nil {
+			return fmt.Errorf("invalid metadata weight: %w", errParse)
+		}
+	}
+	return nil
+}
+
+// ApplyAuthWeightMetadata validates the auth and applies a source metadata weight.
+func ApplyAuthWeightMetadata(auth *Auth, metadata map[string]any) error {
+	if errWeight := ValidateAuthWeight(auth); errWeight != nil {
+		return errWeight
+	}
+	if auth == nil || metadata == nil {
+		return nil
+	}
+	rawWeight, ok := metadata[AttributeWeight]
+	if !ok {
+		return nil
+	}
+	weight, errParse := credentialweight.ParseValue(rawWeight)
+	if errParse != nil {
+		return fmt.Errorf("invalid metadata weight: %w", errParse)
+	}
+	if auth.Attributes == nil {
+		auth.Attributes = make(map[string]string)
+	}
+	auth.Attributes[AttributeWeight] = strconv.FormatInt(weight, 10)
+	return nil
+}