Dockerfile, docker-compose, Gitea CI, Makefile, i18n (en/fa)

pkg/i18n/translator.go

@@ -0,0 +1,67 @@
+package i18n
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"path/filepath"
+	"sync"
+)
+
+// Translator handles translation loading and retrieval.
+type Translator struct {
+	mu       sync.RWMutex
+	messages map[string]map[string]string // lang -> key -> message
+}
+
+// NewTranslator loads JSON locale files en.json and fa.json from the i18n directory.
+// defaultLang sets the default fallback language (e.g., "en").
+func NewTranslator(defaultLang string) (*Translator, error) {
+	if defaultLang == "" {
+		defaultLang = "en"
+	}
+	t := &Translator{
+		messages: make(map[string]map[string]string),
+	}
+	// Load known locale files: en.json and fa.json located in the same package directory.
+	for _, lang := range []string{"en", "fa"} {
+		filePath := filepath.Join("i18n", lang+".json")
+		data, err := ioutil.ReadFile(filePath)
+		if err != nil {
+			return nil, err
+		}
+		var m map[string]string
+		if err := json.Unmarshal(data, &m); err != nil {
+			return nil, err
+		}
+		t.messages[lang] = m
+	}
+	// Ensure default language exists.
+	if _, ok := t.messages[defaultLang]; !ok {
+		return nil, fmt.Errorf("default language %s not found", defaultLang)
+	}
+	return t, nil
+}
+
+// Get returns the translated string for a given key and language.
+// Falls back to English if the key/language is missing.
+func (t *Translator) Get(key, lang string) string {
+	if lang == "" {
+		lang = "en"
+	}
+	t.mu.RLock()
+	defer t.mu.RUnlock()
+	if msgs, ok := t.messages[lang]; ok {
+		if v, ok := msgs[key]; ok {
+			return v
+		}
+	}
+	// fallback to English messages
+	if msgs, ok := t.messages["en"]; ok {
+		if v, ok := msgs[key]; ok {
+			return v
+		}
+	}
+	// If not found, return the key itself.
+	return key
+}