From fe15b78c7f194745e77c93ce710a29dbf2516130 Mon Sep 17 00:00:00 2001
From: Thiago Kenji Okada <thiagokokada@gmail.com>
Date: Sat, 7 Sep 2024 20:45:51 +0100
Subject: [PATCH] request_types: ValidationError -> ErrorValidation

---
 request.go       | 16 +++++++++-------
 request_test.go  |  4 ++--
 request_types.go | 17 ++++++++---------
 3 files changed, 19 insertions(+), 18 deletions(-)

diff --git a/request.go b/request.go
index f5edeb1..2578de8 100644
--- a/request.go
+++ b/request.go
@@ -143,7 +143,7 @@ func parseResponse(raw RawResponse) (response []Response, err error) {
 func validateResponse(params []string, response []Response) ([]Response, error) {
 	// Empty response, something went terrible wrong
 	if len(response) == 0 {
-		return []Response{}, ValidationError("empty response")
+		return []Response{}, fmt.Errorf("%w: empty response", ErrorValidation)
 	}
 
 	// commands without parameters will have at least one return
@@ -151,22 +151,24 @@ func validateResponse(params []string, response []Response) ([]Response, error)
 
 	// we have a different number of requests and responses
 	if want != len(response) {
-		return response, ValidationError(fmt.Sprintf(
-			"want responses: %d, got: %d, responses: %v",
+		return response, fmt.Errorf(
+			"%w: want responses: %d, got: %d, responses: %v",
+			ErrorValidation,
 			want,
 			len(response),
 			response,
-		))
+		)
 	}
 
 	// validate that all responses are ok
 	for i, r := range response {
 		if r != "ok" {
-			return response, ValidationError(fmt.Sprintf(
-				"non-ok response from param: %s, response: %s",
+			return response, fmt.Errorf(
+				"%w: non-ok response from param: %s, response: %s",
+				ErrorValidation,
 				params[i],
 				r,
-			))
+			)
 		}
 	}
 
diff --git a/request_test.go b/request_test.go
index 7cc8503..a548e61 100644
--- a/request_test.go
+++ b/request_test.go
@@ -1,6 +1,7 @@
 package hyprland
 
 import (
+	"errors"
 	"flag"
 	"fmt"
 	"os"
@@ -218,8 +219,7 @@ func TestValidateResponse(t *testing.T) {
 			assert.DeepEqual(t, response, tt.want)
 			if tt.wantErr {
 				assert.Error(t, err)
-				_, ok := err.(ValidationError)
-				assert.True(t, ok)
+				assert.True(t, errors.Is(err, ErrorValidation))
 			} else {
 				assert.NoError(t, err)
 			}
diff --git a/request_types.go b/request_types.go
index 536f6e8..9a6d3e0 100644
--- a/request_types.go
+++ b/request_types.go
@@ -1,6 +1,9 @@
 package hyprland
 
-import "net"
+import (
+	"errors"
+	"net"
+)
 
 // Indicates the version where the structs are up-to-date.
 const HYPRLAND_VERSION = "0.42.0"
@@ -19,14 +22,10 @@ type RequestClient struct {
 	conn *net.UnixAddr
 }
 
-// ValidationError is used to return errors from response validation. In some
-// cases you may want to ignore those errors, in this case you type check this
-// kind of error and ignore it.
-type ValidationError string
-
-func (v ValidationError) Error() string {
-	return string(v)
-}
+// ErrorValidation is used to return errors from response validation. In some
+// cases you may want to ignore those errors, in this case you can use
+// [errors.Is] to compare the errors returned with this type.
+var ErrorValidation = errors.New("validation error")
 
 // Unmarshal structs for requests.
 // Try to keep struct fields in the same order as the output for `hyprctl -j`