Add validator lib

Signed-off-by: Bryan Frimin <bryan@getprobo.com>
2025-11-03 08:19:09 +01:00
parent 288c59a5f2
commit f9216d30b2
102 changed files with 7409 additions and 1068 deletions
--- a/pkg/validator/validator_numeric.go
+++ b/pkg/validator/validator_numeric.go
@@ -0,0 +1,203 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package validator
+
+import "fmt"
+
+// Min validates that a number is at least the specified minimum value.
+func Min(min int) ValidatorFunc {
+	return func(value any) *ValidationError {
+		actualValue, isNil := dereferenceValue(value)
+		if isNil {
+			return nil
+		}
+
+		var num int
+		switch v := actualValue.(type) {
+		case int:
+			num = v
+		case int32:
+			num = int(v)
+		case int64:
+			num = int(v)
+		default:
+			return newValidationError(ErrorCodeInvalidFormat, "value must be a number")
+		}
+
+		if num < min {
+			return newValidationError(
+				ErrorCodeOutOfRange,
+				fmt.Sprintf("must be at least %d", min),
+			)
+		}
+
+		return nil
+	}
+}
+
+// Max validates that a number does not exceed the specified maximum value.
+func Max(max int) ValidatorFunc {
+	return func(value any) *ValidationError {
+		actualValue, isNil := dereferenceValue(value)
+		if isNil {
+			return nil
+		}
+
+		var num int
+		switch v := actualValue.(type) {
+		case int:
+			num = v
+		case int32:
+			num = int(v)
+		case int64:
+			num = int(v)
+		default:
+			return newValidationError(ErrorCodeInvalidFormat, "value must be a number")
+		}
+
+		if num > max {
+			return newValidationError(
+				ErrorCodeOutOfRange,
+				fmt.Sprintf("must be at most %d", max),
+			)
+		}
+
+		return nil
+	}
+}
+
+// Range validates that a number is within the specified range (inclusive).
+func Range(min, max int) ValidatorFunc {
+	return func(value any) *ValidationError {
+		actualValue, isNil := dereferenceValue(value)
+		if isNil {
+			return nil
+		}
+
+		var num int
+		switch v := actualValue.(type) {
+		case int:
+			num = v
+		case int32:
+			num = int(v)
+		case int64:
+			num = int(v)
+		default:
+			return newValidationError(ErrorCodeInvalidFormat, "value must be a number")
+		}
+
+		if num < min || num > max {
+			return newValidationError(
+				ErrorCodeOutOfRange,
+				fmt.Sprintf("must be between %d and %d", min, max),
+			)
+		}
+
+		return nil
+	}
+}
+
+// MinFloat validates that a floating-point number is at least the specified minimum value.
+func MinFloat(min float64) ValidatorFunc {
+	return func(value any) *ValidationError {
+		actualValue, isNil := dereferenceValue(value)
+		if isNil {
+			return nil
+		}
+
+		var num float64
+		switch v := actualValue.(type) {
+		case float32:
+			num = float64(v)
+		case float64:
+			num = v
+		case int:
+			num = float64(v)
+		default:
+			return newValidationError(ErrorCodeInvalidFormat, "value must be a number")
+		}
+
+		if num < min {
+			return newValidationError(
+				ErrorCodeOutOfRange,
+				fmt.Sprintf("must be at least %g", min),
+			)
+		}
+
+		return nil
+	}
+}
+
+// MaxFloat validates that a floating-point number does not exceed the specified maximum value.
+func MaxFloat(max float64) ValidatorFunc {
+	return func(value any) *ValidationError {
+		actualValue, isNil := dereferenceValue(value)
+		if isNil {
+			return nil
+		}
+
+		var num float64
+		switch v := actualValue.(type) {
+		case float32:
+			num = float64(v)
+		case float64:
+			num = v
+		case int:
+			num = float64(v)
+		default:
+			return newValidationError(ErrorCodeInvalidFormat, "value must be a number")
+		}
+
+		if num > max {
+			return newValidationError(
+				ErrorCodeOutOfRange,
+				fmt.Sprintf("must be at most %g", max),
+			)
+		}
+
+		return nil
+	}
+}
+
+// RangeFloat validates that a floating-point number is within the specified range (inclusive).
+func RangeFloat(min, max float64) ValidatorFunc {
+	return func(value any) *ValidationError {
+		actualValue, isNil := dereferenceValue(value)
+		if isNil {
+			return nil
+		}
+
+		var num float64
+		switch v := actualValue.(type) {
+		case float32:
+			num = float64(v)
+		case float64:
+			num = v
+		case int:
+			num = float64(v)
+		default:
+			return newValidationError(ErrorCodeInvalidFormat, "value must be a number")
+		}
+
+		if num < min || num > max {
+			return newValidationError(
+				ErrorCodeOutOfRange,
+				fmt.Sprintf("must be between %g and %g", min, max),
+			)
+		}
+
+		return nil
+	}
+}