translator to struct

main.go

@@ -6,18 +6,23 @@ import (
 )
 
 var (
+	// Translate
+	translator Translator
+	// TUI
 	app      = tview.NewApplication()
-	source_box = tview.NewInputField()
+	src_box  = tview.NewInputField()
-	target_box = tview.NewTextView()
+	dest_box = tview.NewTextView()
 )
 
 func main() {
-	result := Translate("Hello world\nApple", "English", "Chinese (Traditional)")
+	translator.src_lang = "English"
+	translator.dest_lang = "Chinese (Traditional)"
+	result, _ := translator.Translate("Hello world\nApple\nbumper")
 	fmt.Println(result)
 	// if err := app.SetRoot(
 	// 	tview.NewFlex().SetDirection(tview.FlexRow).
-	// 		AddItem(source_box, 0, 1, true).
+	// 		AddItem(src_box, 0, 1, true).
-	// 		AddItem(target_box, 0, 6, false),
+	// 		AddItem(dest_box, 0, 6, false),
 	// 	true).EnableMouse(true).Run(); err != nil {
 	// 	panic(err)
 	// }

translator.go

@@ -1,23 +1,54 @@
 package main
 
 import (
+	"encoding/json"
+	"errors"
 	"fmt"
 	"io/ioutil"
 	"net/http"
 	"net/url"
 )
 
-func Translate(message string, source_lang string, target_lang string) string {
+const (
+	API_URL = "https://translate.googleapis.com/translate_a/single?client=gtx&sl=%s&tl=%s&dt=t&q=%s"
+)
+
+type Translator struct {
+	src_lang  string
+	dest_lang string
+}
+
+func (t Translator) Translate(message string) (string, error) {
+	var data []interface{}
+	var translated string
+
 	url_str := fmt.Sprintf(
-		"https://translate.googleapis.com/translate_a/single?client=gtx&sl=%s&tl=%s&dt=t&q=%s",
+		API_URL,
-		Lang[source_lang],
+		Lang[t.src_lang],
-		Lang[target_lang],
+		Lang[t.dest_lang],
 		url.QueryEscape(message),
 	)
 	res, err := http.Get(url_str)
 	if err != nil {
-		panic(err)
+		return err.Error(), err
 	}
 	body, err := ioutil.ReadAll(res.Body)
-	return string(body[:])
+	if err != nil {
+		return err.Error(), err
+	}
+
+	err = json.Unmarshal(body, &data)
+	if err != nil {
+		return err.Error(), err
+	}
+
+	if len(data) > 0 {
+		result := data[0]
+		for _, lines := range result.([]interface{}) {
+			translated_line := lines.([]interface{})[0]
+			translated += fmt.Sprintf("%v", translated_line)
+		}
+		return translated, nil
+	}
+	return "Translation not found", errors.New("Translation not found")
 }