c17e85c14e
- Add go-i18n package for internationalization - Create i18n middleware to extract Accept-Language header - Add translation files for en, es, fr, de, pt languages - Localize all handler error messages and responses - Add language context to all API handlers Supported languages: English, Spanish, French, German, Portuguese 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
87 lines
2.3 KiB
Go
87 lines
2.3 KiB
Go
package i18n
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import (
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"embed"
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"encoding/json"
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"github.com/nicksnyder/go-i18n/v2/i18n"
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"github.com/rs/zerolog/log"
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"golang.org/x/text/language"
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)
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//go:embed translations/*.json
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var translationFS embed.FS
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// Bundle is the global i18n bundle
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var Bundle *i18n.Bundle
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// SupportedLanguages lists all supported language codes
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var SupportedLanguages = []string{"en", "es", "fr", "de", "pt"}
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// DefaultLanguage is the fallback language
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const DefaultLanguage = "en"
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// Init initializes the i18n bundle with embedded translation files
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func Init() error {
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Bundle = i18n.NewBundle(language.English)
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Bundle.RegisterUnmarshalFunc("json", json.Unmarshal)
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// Load all translation files
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for _, lang := range SupportedLanguages {
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path := "translations/" + lang + ".json"
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data, err := translationFS.ReadFile(path)
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if err != nil {
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log.Warn().Str("language", lang).Err(err).Msg("Failed to load translation file")
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continue
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}
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Bundle.MustParseMessageFileBytes(data, path)
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log.Info().Str("language", lang).Msg("Loaded translation file")
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}
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return nil
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}
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// NewLocalizer creates a new localizer for the given language tags
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func NewLocalizer(langs ...string) *i18n.Localizer {
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return i18n.NewLocalizer(Bundle, langs...)
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}
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// T translates a message ID with optional template data
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func T(localizer *i18n.Localizer, messageID string, templateData map[string]interface{}) string {
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if localizer == nil {
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localizer = NewLocalizer(DefaultLanguage)
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}
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msg, err := localizer.Localize(&i18n.LocalizeConfig{
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MessageID: messageID,
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TemplateData: templateData,
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})
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if err != nil {
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// Fallback to message ID if translation not found
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log.Debug().Str("message_id", messageID).Err(err).Msg("Translation not found")
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return messageID
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}
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return msg
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}
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// TSimple translates a message ID without template data
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func TSimple(localizer *i18n.Localizer, messageID string) string {
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return T(localizer, messageID, nil)
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}
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// MustT translates a message ID or panics
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func MustT(localizer *i18n.Localizer, messageID string, templateData map[string]interface{}) string {
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if localizer == nil {
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localizer = NewLocalizer(DefaultLanguage)
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}
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msg, err := localizer.Localize(&i18n.LocalizeConfig{
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MessageID: messageID,
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TemplateData: templateData,
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})
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if err != nil {
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panic(err)
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}
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return msg
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}
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