add the api route for translation

pages/api.go

@@ -6,7 +6,7 @@ import (
 )
 
 func HandleSourceLanguages(c *fiber.Ctx) error {
-	engine := c.Query("engine")
+	engine := utils.Sanitize(c.Query("engine"), "alpha")
 	if engine == "" {
 		return c.SendStatus(fiber.StatusBadRequest)
 	}
@@ -29,7 +29,7 @@ func HandleSourceLanguages(c *fiber.Ctx) error {
 	return c.JSON(data)
 }
 func HandleTargetLanguages(c *fiber.Ctx) error {
-	engine := c.Query("engine")
+	engine := utils.Sanitize(c.Query("engine"), "alpha")
 	if engine == "" {
 		return c.SendStatus(fiber.StatusBadRequest)
 	}
@@ -37,7 +37,7 @@ func HandleTargetLanguages(c *fiber.Ctx) error {
 	if engine == "google" {
 		data = utils.LangListGoogle("tl")
 	} else if engine == "libre" {
-		data = utils.LangListLibreTranslate("sl")
+		data = utils.LangListLibreTranslate("tl")
 	} else if engine == "reverso" {
 		data = utils.LangListReverso("tl")
 	} else if engine == "deepl" {
@@ -52,8 +52,8 @@ func HandleTargetLanguages(c *fiber.Ctx) error {
 	return c.JSON(data)
 }
 func HandleTTS(c *fiber.Ctx) error {
-	engine := c.Query("engine")
+	engine := utils.Sanitize(c.Query("engine"), "alpha")
-	lang := c.Query("lang")
+	lang := utils.Sanitize(c.Query("lang"), "alpha")
 	text := c.Query("text")
 	// Why does go not have an andor statement :(
 	if engine == "" {
@@ -72,3 +72,35 @@ func HandleTTS(c *fiber.Ctx) error {
 	c.Set("Content-Type", "audio/mpeg")
 	return c.Send([]byte(data))
 }
+func HandleTranslate(c *fiber.Ctx) error {
+	engine := utils.Sanitize(c.Query("engine"), "alpha")
+	from := utils.Sanitize(c.Query("from"), "alpha")
+	to := utils.Sanitize(c.Query("to"), "alpha")
+	text := c.Query("text")
+	if engine == "" && from == "" && to == "" && text == ""{
+		return fiber.NewError(fiber.StatusBadRequest, "from, to, engine, text are required query strings.")
+	}
+	var data utils.LangOut
+	var err error
+	if engine == "google" {
+		data, err = utils.TranslateGoogle(to, from, text)
+	} else if engine == "libre" {
+		data, err = utils.TranslateLibreTranslate(to, from, text)
+	} else if engine == "reverso" {
+		data, err = utils.TranslateReverso(to, from, text)
+	} else if engine == "deepl" {
+		data, err = utils.TranslateDeepl(to, from, text)
+	} else if engine == "watson" {
+		data, err = utils.TranslateWatson(to, from, text)
+	} else if engine == "yandex" {
+		data, err = utils.TranslateYandex(to, from, text)
+	} else if engine == "mymemory" {
+		data, err = utils.TranslateMyMemory(to, from, text)
+	}
+	if err != nil {
+		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
+	}
+	data.SourceLang = from
+	data.TargetLang = to
+	return c.JSON(data)
+}

serve/serve.go

@@ -5,7 +5,6 @@ import (
 	"log"
 	"os"
 	"runtime"
-	"strings"
 
 	"codeberg.org/aryak/simplytranslate/pages"
 	"codeberg.org/aryak/simplytranslate/utils"
@@ -39,23 +38,6 @@ func Serve(port string) {
 		EnableTrustedProxyCheck: true,
 		TrustedProxies:          []string{"0.0.0.0/0"},
 		ProxyHeader:             fiber.HeaderXForwardedFor,
-		ErrorHandler: func(ctx *fiber.Ctx, err error) error {
-			code := fiber.StatusInternalServerError
-
-			if e, ok := err.(*fiber.Error); ok {
-				code = e.Code
-			}
-			link := strings.TrimPrefix(err.Error(), "Cannot GET ")
-			err = ctx.Status(code).Render("error", fiber.Map{
-				"error": err,
-				"link":  link,
-			})
-			if err != nil {
-				return ctx.Status(fiber.StatusInternalServerError).SendString("Internal Server Error")
-			}
-
-			return nil
-		},
 	})
 
 	// For debugging purposes
@@ -97,7 +79,7 @@ func Serve(port string) {
 	})
 
 	app.Get("/", pages.HandleIndex)
-	//app.Get("/api/translate", pages.HandleTranslateApi)
+	app.Get("/api/translate", pages.HandleTranslate)
 	app.Get("/api/source_languages", pages.HandleSourceLanguages)
 	app.Get("/api/target_languages", pages.HandleTargetLanguages)
 	app.Get("/api/tts", pages.HandleTTS)

utils/engines.go

@@ -11,8 +11,10 @@ import (
 )
 
 type LangOut struct {
-	OutputText string
+	OutputText string `json:"translated-text"`
-	AutoDetect string
+	AutoDetect string `json:"detected"`
+	SourceLang string `json:"source_language"`
+	TargetLang string `json:"target_language"`
 }
 
 func TranslateGoogle(to string, from string, text string) (LangOut, error) {

utils/langlist-reverso.go

@@ -1,10 +1,5 @@
 package utils
 
-type List struct {
-	Name string
-	Id   string
-}
-
 func LangListReverso(listType string) []List {
 	// IDs got from original simplytranslate-web and trial and error. Usually first three letters of language.
 	var ListData = []List{

utils/main.go

@@ -0,0 +1,6 @@
+package utils
+
+type List struct {
+	Name string
+	Id   string
+}

utils/sanitize.go

@@ -0,0 +1,14 @@
+package utils
+
+import "regexp"
+
+func Sanitize(str string, strip string) string {
+	nonAlphanumericRegex := regexp.MustCompile(`[^a-zA-Z]+`)
+	nonAlphaRegex := regexp.MustCompile(`[^a-zA-Z0-9]+`)
+	if strip == "alpha" {
+		return nonAlphaRegex.ReplaceAllString(str, "")
+	} else if strip == "alphanumeric" {
+		return nonAlphanumericRegex.ReplaceAllString(str, "")
+	}
+	return ""
+}