error handling with oapi

[KevinNitroG]

// 1. Define your custom ErrorHandler
func MyCustomErrorHandler(c *gin.Context, err error, statusCode int) {
    // Check if it's your domain error
    if domainErr, ok := errors.AsType[*apperrors.DomainError](err); ok {
        // Map to your JSON structure
        c.JSON(mapCodeToStatus(domainErr.Code), note.Error{
            Code:    string(domainErr.Code),
            Message: domainErr.Message,
        })
        return
    }
    
    // Default fallback for real internal errors
    c.JSON(http.StatusInternalServerError, gin.H{"msg": "Internal Server Error"})
}

// 2. Pass it when registering
note.RegisterHandlersWithOptions(router, strictHandler, note.GinServerOptions{
    ErrorHandler: MyCustomErrorHandler,
})

While using with strict server

We need to return nil, err and let the error handler catch this