Initial cloud-services repo - gateway service + pkg modules

pkg/validator/dates.go

@@ -0,0 +1,31 @@
+package validator
+
+import (
+	"regexp"
+
+	"github.com/go-playground/validator/v10"
+)
+
+const iso8601DateRegexString = "^(?:[1-9]\\d{3}-(?:(?:0[1-9]|1[0-2])-(?:0[1-9]|1\\d|2[0-8])|(?:0[13-9]|1[0-2])-(?:29|30)|(?:0[13578]|1[02])-31)|(?:[1-9]\\d(?:0[48]|[2468][048]|[13579][26])|(?:[2468][048]|[13579][26])00)-02-29)T(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d{1,9})?(?:Z|[+-][01]\\d:[0-5]\\d)$"
+const yyyyMMDDDateRegexString = `^\d{4}\-\d{2}\-\d{2}$`
+
+var iso8601DateRegex = regexp.MustCompile(iso8601DateRegexString)
+var yyyyMMDDDateRegex = regexp.MustCompile(yyyyMMDDDateRegexString)
+
+func IsISO8601Date(fl validator.FieldLevel) bool {
+	value := fl.Field().String()
+	// skip if blank. if required, add required tag
+	if len(value) == 0 {
+		return true
+	}
+	return iso8601DateRegex.MatchString(value)
+}
+
+func IsDateYYYYMMDD(fl validator.FieldLevel) bool {
+	value := fl.Field().String()
+	// skip if blank. if required, add required tag
+	if len(value) == 0 {
+		return true
+	}
+	return yyyyMMDDDateRegex.MatchString(value)
+}