♻️ Move transformer to an isolated module

pkg/sign/deserializer.go

@@ -1,10 +0,0 @@
-package sign
-
-import "encoding/json"
-
-func DeserializeOptions[T any](data any) T {
-	var out T
-	raw, _ := json.Marshal(data)
-	_ = json.Unmarshal(raw, &out)
-	return out
-}

pkg/sign/router.go

@@ -1,6 +1,7 @@
 package sign
 
 import (
+	"code.smartsheep.studio/goatworks/roadsign/pkg/sign/transformers"
 	"errors"
 	"math/rand"
 
@@ -39,6 +40,8 @@ func (v *RoadApp) Forward(ctx *fiber.Ctx, site *SiteConfig) error {
 	}
 }
 
+type RequestTransformerConfig = transformers.RequestTransformerConfig
+
 type SiteConfig struct {
 	ID           string                      `json:"id"`
 	Rules        []*RouterRuleConfig         `json:"rules" yaml:"rules"`

pkg/sign/transformers/module.go

@@ -1,12 +1,12 @@
-package sign
+package transformers
 
 import (
-	"regexp"
+	"encoding/json"
-	"strings"
-
 	"github.com/gofiber/fiber/v2"
 )
 
+// Definitions
+
 type RequestTransformer struct {
 	ModifyRequest  func(options any, ctx *fiber.Ctx)
 	ModifyResponse func(options any, ctx *fiber.Ctx)
@@ -39,21 +39,18 @@ func (v *RequestTransformerConfig) TransformResponse(ctx *fiber.Ctx) {
 	}
 }
 
+// Helpers
+
+func DeserializeOptions[T any](data any) T {
+	var out T
+	raw, _ := json.Marshal(data)
+	_ = json.Unmarshal(raw, &out)
+	return out
+}
+
+// Map of Transformers
+// Every transformer need to be mapped here so that they can get work.
+
 var Transformers = map[string]RequestTransformer{
-	"replacePath": {
+	"replacePath": ReplacePath,
-		ModifyRequest: func(options any, ctx *fiber.Ctx) {
-			opts := DeserializeOptions[struct {
-				Pattern string `json:"pattern"`
-				Value   string `json:"value"`
-				Repl    string `json:"repl"` // Use when complex mode(regexp) enabled
-				Complex bool   `json:"complex"`
-			}](options)
-			path := string(ctx.Request().URI().Path())
-			if !opts.Complex {
-				ctx.Path(strings.ReplaceAll(path, opts.Pattern, opts.Value))
-			} else if ex := regexp.MustCompile(opts.Pattern); ex != nil {
-				ctx.Path(ex.ReplaceAllString(path, opts.Repl))
-			}
-		},
-	},
 }

pkg/sign/transformers/replace_path.go

@@ -0,0 +1,24 @@
+package transformers
+
+import (
+	"github.com/gofiber/fiber/v2"
+	"regexp"
+	"strings"
+)
+
+var ReplacePath = RequestTransformer{
+	ModifyRequest: func(options any, ctx *fiber.Ctx) {
+		opts := DeserializeOptions[struct {
+			Pattern string `json:"pattern"`
+			Value   string `json:"value"`
+			Repl    string `json:"repl"` // Use when complex mode(regexp) enabled
+			Complex bool   `json:"complex"`
+		}](options)
+		path := string(ctx.Request().URI().Path())
+		if !opts.Complex {
+			ctx.Path(strings.ReplaceAll(path, opts.Pattern, opts.Value))
+		} else if ex := regexp.MustCompile(opts.Pattern); ex != nil {
+			ctx.Path(ex.ReplaceAllString(path, opts.Repl))
+		}
+	},
+}