Initial QSfera import

Server/vendor/github.com/invopop/validation/when.go

@@ -0,0 +1,45 @@
+package validation
+
+import "context"
+
+// When returns a validation rule that executes the given list of rules when the condition is true.
+func When(condition bool, rules ...Rule) WhenRule {
+	return WhenRule{
+		condition: condition,
+		rules:     rules,
+		elseRules: []Rule{},
+	}
+}
+
+// WhenRule is a validation rule that executes the given list of rules when the condition is true.
+type WhenRule struct {
+	condition bool
+	rules     []Rule
+	elseRules []Rule
+}
+
+// Validate checks if the condition is true and if so, it validates the value using the specified rules.
+func (r WhenRule) Validate(value interface{}) error {
+	return r.ValidateWithContext(context.Background(), value)
+}
+
+// ValidateWithContext checks if the condition is true and if so, it validates the value using the specified rules.
+func (r WhenRule) ValidateWithContext(ctx context.Context, value interface{}) error {
+	if r.condition {
+		if ctx == nil {
+			return Validate(value, r.rules...)
+		}
+		return ValidateWithContext(ctx, value, r.rules...)
+	}
+
+	if ctx == nil {
+		return Validate(value, r.elseRules...)
+	}
+	return ValidateWithContext(ctx, value, r.elseRules...)
+}
+
+// Else returns a validation rule that executes the given list of rules when the condition is false.
+func (r WhenRule) Else(rules ...Rule) WhenRule {
+	r.elseRules = rules
+	return r
+}