honeyDueAPI/MIGRATION_STATUS.md

Phase 4: Gin to Echo Handler Migration Status

Completed Files

✅ auth_handler.go

• Status: Fully migrated
• Methods migrated: 13 methods
  • Login, Register, Logout, CurrentUser, UpdateProfile
  • VerifyEmail, ResendVerification
  • ForgotPassword, VerifyResetCode, ResetPassword
  • AppleSignIn, GoogleSignIn
• Key changes applied:
  • Import changed from gin to echo
  • Added validator import
  • All handlers return error
  • c.Bind + c.Validate pattern implemented
  • c.MustGet → c.Get
  • gin.H → map[string]interface{}
  • c.Request.Context() → c.Request().Context()
  • All c.JSON calls use return

Remaining Files to Migrate

🔧 residence_handler.go

• Status: Partially migrated (needs cleanup)
• Methods: 13 methods
• Issue: Sed-based automated migration created syntax errors
• Next steps: Manual cleanup needed

⏳ task_handler.go

• Methods: ~17 methods
• Complexity: High (multipart form handling for completions)
• Special considerations:
  • Has multipart/form-data handling in CreateCompletion
  • Multiple lookup endpoints (categories, priorities, frequencies)

⏳ contractor_handler.go

• Methods: 8 methods
• Complexity: Medium

⏳ document_handler.go

• Methods: 8 methods
• Complexity: High (multipart form handling)
• Special considerations: File upload in CreateDocument

⏳ notification_handler.go

• Methods: 9 methods
• Complexity: Medium
• Special considerations: Query parameters for pagination

⏳ subscription_handler.go

• Status: Unknown
• Estimated complexity: Medium

⏳ upload_handler.go

• Methods: 4 methods
• Complexity: Medium
• Special considerations: c.FormFile handling, c.DefaultQuery

⏳ user_handler.go

• Methods: 3 methods
• Complexity: Low

⏳ media_handler.go

• Status: Unknown
• Estimated complexity: Medium

⏳ static_data_handler.go

• Methods: Unknown
• Complexity: Low (likely just lookups)

⏳ task_template_handler.go

• Status: Unknown
• Estimated complexity: Medium

⏳ tracking_handler.go

• Status: Unknown
• Estimated complexity: Low

⏳ subscription_webhook_handler.go

• Status: Unknown
• Estimated complexity: Medium-High (webhook handling)

Migration Pattern

All handlers must follow these transformations:

// BEFORE (Gin)
func (h *Handler) Method(c *gin.Context) {
    user := c.MustGet(middleware.AuthUserKey).(*models.User)

    var req requests.SomeRequest
    if err := c.ShouldBindJSON(&req); err != nil {
        c.JSON(400, gin.H{"error": err.Error()})
        return
    }

    result, err := h.service.DoSomething(&req)
    if err != nil {
        c.JSON(500, gin.H{"error": err.Error()})
        return
    }

    c.JSON(200, result)
}

// AFTER (Echo)
func (h *Handler) Method(c echo.Context) error {
    user := c.Get(middleware.AuthUserKey).(*models.User)

    var req requests.SomeRequest
    if err := c.Bind(&req); err != nil {
        return c.JSON(400, map[string]interface{}{"error": err.Error()})
    }
    if err := c.Validate(&req); err != nil {
        return c.JSON(400, validator.FormatValidationErrors(err))
    }

    result, err := h.service.DoSomething(&req)
    if err != nil {
        return c.JSON(500, map[string]interface{}{"error": err.Error()})
    }

    return c.JSON(200, result)
}

Critical Context Changes

Gin	Echo
c.MustGet()	c.Get()
c.ShouldBindJSON()	c.Bind() + c.Validate()
c.JSON(status, data)	return c.JSON(status, data)
c.Query("key")	c.QueryParam("key")
c.DefaultQuery("k", "v")	Manual: if v := c.QueryParam("k"); v != "" { } else { v = "default" }
c.PostForm("field")	c.FormValue("field")
c.GetHeader("X-...")	c.Request().Header.Get("X-...")
c.Request.Context()	c.Request().Context()
c.Status(code)	return c.NoContent(code)
gin.H{...}	map[string]interface{}{...}

Multipart Form Handling

For handlers with file uploads (document_handler, task_handler):

// Request parsing
c.Request.ParseMultipartForm(32 << 20)  // Same
c.PostForm("field") → c.FormValue("field")
c.FormFile("file")  // Same

Next Steps

1. Clean up residence_handler.go manually
2. Migrate contractor_handler.go (simpler, good template)
3. Migrate smaller files: user_handler.go, upload_handler.go, notification_handler.go
4. Migrate complex files: task_handler.go, document_handler.go
5. Migrate remaining files
6. Test compilation
7. Update route registration (if not already done in Phase 3)

Automation Lessons Learned

• Sed-based bulk replacements are error-prone for complex Go code
• Better approach: Manual migration with copy-paste for repetitive patterns
• Python script provided in migrate_handlers.py (not yet tested)
• Best approach: Methodical manual migration with validation at each step