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Add comprehensive i18n localization support

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- 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>
This commit is contained in:
Trey t
2025-12-02 02:01:47 -06:00
parent c72741fd5f
commit c17e85c14e
22 changed files with 1771 additions and 193 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
internal/handlers/residence_handler.go
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@@ -8,6 +8,7 @@ import (
"github.com/gin-gonic/gin"
"github.com/treytartt/casera-api/internal/dto/requests"
"github.com/treytartt/casera-api/internal/i18n"
"github.com/treytartt/casera-api/internal/middleware"
"github.com/treytartt/casera-api/internal/models"
"github.com/treytartt/casera-api/internal/services"
@@ -61,7 +62,7 @@ func (h *ResidenceHandler) GetResidence(c *gin.Context) {
residenceID, err := strconv.ParseUint(c.Param("id"), 10, 32)
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid residence ID"})
c.JSON(http.StatusBadRequest, gin.H{"error": i18n.LocalizedMessage(c, "error.invalid_residence_id")})
return
}
@@ -69,9 +70,9 @@ func (h *ResidenceHandler) GetResidence(c *gin.Context) {
if err != nil {
switch {
case errors.Is(err, services.ErrResidenceNotFound):
c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
c.JSON(http.StatusNotFound, gin.H{"error": i18n.LocalizedMessage(c, "error.residence_not_found")})
case errors.Is(err, services.ErrResidenceAccessDenied):
c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
c.JSON(http.StatusForbidden, gin.H{"error": i18n.LocalizedMessage(c, "error.residence_access_denied")})
default:
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
}
@@ -94,7 +95,7 @@ func (h *ResidenceHandler) CreateResidence(c *gin.Context) {
response, err := h.residenceService.CreateResidence(&req, user.ID)
if err != nil {
if errors.Is(err, services.ErrPropertiesLimitReached) {
c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
c.JSON(http.StatusForbidden, gin.H{"error": i18n.LocalizedMessage(c, "error.properties_limit_reached")})
return
}
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
@@ -110,7 +111,7 @@ func (h *ResidenceHandler) UpdateResidence(c *gin.Context) {
residenceID, err := strconv.ParseUint(c.Param("id"), 10, 32)
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid residence ID"})
c.JSON(http.StatusBadRequest, gin.H{"error": i18n.LocalizedMessage(c, "error.invalid_residence_id")})
return
}
@@ -124,9 +125,9 @@ func (h *ResidenceHandler) UpdateResidence(c *gin.Context) {
if err != nil {
switch {
case errors.Is(err, services.ErrResidenceNotFound):
c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
c.JSON(http.StatusNotFound, gin.H{"error": i18n.LocalizedMessage(c, "error.residence_not_found")})
case errors.Is(err, services.ErrNotResidenceOwner):
c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
c.JSON(http.StatusForbidden, gin.H{"error": i18n.LocalizedMessage(c, "error.not_residence_owner")})
default:
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
}
@@ -142,7 +143,7 @@ func (h *ResidenceHandler) DeleteResidence(c *gin.Context) {
residenceID, err := strconv.ParseUint(c.Param("id"), 10, 32)
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid residence ID"})
c.JSON(http.StatusBadRequest, gin.H{"error": i18n.LocalizedMessage(c, "error.invalid_residence_id")})
return
}
@@ -150,16 +151,16 @@ func (h *ResidenceHandler) DeleteResidence(c *gin.Context) {
if err != nil {
switch {
case errors.Is(err, services.ErrResidenceNotFound):
c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
c.JSON(http.StatusNotFound, gin.H{"error": i18n.LocalizedMessage(c, "error.residence_not_found")})
case errors.Is(err, services.ErrNotResidenceOwner):
c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
c.JSON(http.StatusForbidden, gin.H{"error": i18n.LocalizedMessage(c, "error.not_residence_owner")})
default:
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
}
return
}
c.JSON(http.StatusOK, gin.H{"message": "Residence deleted successfully"})
c.JSON(http.StatusOK, gin.H{"message": i18n.LocalizedMessage(c, "message.residence_deleted")})
}
// GenerateShareCode handles POST /api/residences/:id/generate-share-code/
@@ -168,7 +169,7 @@ func (h *ResidenceHandler) GenerateShareCode(c *gin.Context) {
residenceID, err := strconv.ParseUint(c.Param("id"), 10, 32)
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid residence ID"})
c.JSON(http.StatusBadRequest, gin.H{"error": i18n.LocalizedMessage(c, "error.invalid_residence_id")})
return
}
@@ -180,9 +181,9 @@ func (h *ResidenceHandler) GenerateShareCode(c *gin.Context) {
if err != nil {
switch {
case errors.Is(err, services.ErrResidenceNotFound):
c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
c.JSON(http.StatusNotFound, gin.H{"error": i18n.LocalizedMessage(c, "error.residence_not_found")})
case errors.Is(err, services.ErrNotResidenceOwner):
c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
c.JSON(http.StatusForbidden, gin.H{"error": i18n.LocalizedMessage(c, "error.not_residence_owner")})
default:
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
}
@@ -206,11 +207,11 @@ func (h *ResidenceHandler) JoinWithCode(c *gin.Context) {
if err != nil {
switch {
case errors.Is(err, services.ErrShareCodeInvalid):
c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
c.JSON(http.StatusNotFound, gin.H{"error": i18n.LocalizedMessage(c, "error.share_code_invalid")})
case errors.Is(err, services.ErrShareCodeExpired):
c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
c.JSON(http.StatusBadRequest, gin.H{"error": i18n.LocalizedMessage(c, "error.share_code_expired")})
case errors.Is(err, services.ErrUserAlreadyMember):
c.JSON(http.StatusConflict, gin.H{"error": err.Error()})
c.JSON(http.StatusConflict, gin.H{"error": i18n.LocalizedMessage(c, "error.user_already_member")})
default:
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
}
@@ -226,7 +227,7 @@ func (h *ResidenceHandler) GetResidenceUsers(c *gin.Context) {
residenceID, err := strconv.ParseUint(c.Param("id"), 10, 32)
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid residence ID"})
c.JSON(http.StatusBadRequest, gin.H{"error": i18n.LocalizedMessage(c, "error.invalid_residence_id")})
return
}
@@ -234,9 +235,9 @@ func (h *ResidenceHandler) GetResidenceUsers(c *gin.Context) {
if err != nil {
switch {
case errors.Is(err, services.ErrResidenceNotFound):
c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
c.JSON(http.StatusNotFound, gin.H{"error": i18n.LocalizedMessage(c, "error.residence_not_found")})
case errors.Is(err, services.ErrResidenceAccessDenied):
c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
c.JSON(http.StatusForbidden, gin.H{"error": i18n.LocalizedMessage(c, "error.residence_access_denied")})
default:
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
}
@@ -252,13 +253,13 @@ func (h *ResidenceHandler) RemoveResidenceUser(c *gin.Context) {
residenceID, err := strconv.ParseUint(c.Param("id"), 10, 32)
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid residence ID"})
c.JSON(http.StatusBadRequest, gin.H{"error": i18n.LocalizedMessage(c, "error.invalid_residence_id")})
return
}
userIDToRemove, err := strconv.ParseUint(c.Param("user_id"), 10, 32)
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid user ID"})
c.JSON(http.StatusBadRequest, gin.H{"error": i18n.LocalizedMessage(c, "error.invalid_user_id")})
return
}
@@ -266,18 +267,18 @@ func (h *ResidenceHandler) RemoveResidenceUser(c *gin.Context) {
if err != nil {
switch {
case errors.Is(err, services.ErrResidenceNotFound):
c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
c.JSON(http.StatusNotFound, gin.H{"error": i18n.LocalizedMessage(c, "error.residence_not_found")})
case errors.Is(err, services.ErrNotResidenceOwner):
c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
c.JSON(http.StatusForbidden, gin.H{"error": i18n.LocalizedMessage(c, "error.not_residence_owner")})
case errors.Is(err, services.ErrCannotRemoveOwner):
c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
c.JSON(http.StatusBadRequest, gin.H{"error": i18n.LocalizedMessage(c, "error.cannot_remove_owner")})
default:
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
}
return
}
c.JSON(http.StatusOK, gin.H{"message": "User removed from residence"})
c.JSON(http.StatusOK, gin.H{"message": i18n.LocalizedMessage(c, "message.user_removed")})
}
// GetResidenceTypes handles GET /api/residences/types/
@@ -298,7 +299,7 @@ func (h *ResidenceHandler) GenerateTasksReport(c *gin.Context) {
residenceID, err := strconv.ParseUint(c.Param("id"), 10, 32)
if err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid residence ID"})
c.JSON(http.StatusBadRequest, gin.H{"error": i18n.LocalizedMessage(c, "error.invalid_residence_id")})
return
}
@@ -313,9 +314,9 @@ func (h *ResidenceHandler) GenerateTasksReport(c *gin.Context) {
if err != nil {
switch {
case errors.Is(err, services.ErrResidenceNotFound):
c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
c.JSON(http.StatusNotFound, gin.H{"error": i18n.LocalizedMessage(c, "error.residence_not_found")})
case errors.Is(err, services.ErrResidenceAccessDenied):
c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
c.JSON(http.StatusForbidden, gin.H{"error": i18n.LocalizedMessage(c, "error.residence_access_denied")})
default:
c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
}
@@ -360,11 +361,11 @@ func (h *ResidenceHandler) GenerateTasksReport(c *gin.Context) {
}
// Build response message
message := "Tasks report generated successfully"
message := i18n.LocalizedMessage(c, "message.tasks_report_generated")
if pdfGenerated && emailSent {
message = "Tasks report generated and sent to " + recipientEmail
message = i18n.LocalizedMessageWithData(c, "message.tasks_report_sent", map[string]interface{}{"Email": recipientEmail})
} else if pdfGenerated && !emailSent {
message = "Tasks report generated but email could not be sent"
message = i18n.LocalizedMessage(c, "message.tasks_report_email_failed")
}
c.JSON(http.StatusOK, gin.H{