패닉 처리

func doSomething() {
    // Deferred functions run even when a panic occurs
    defer func() {
        if r := recover(); r != nil {
            fmt.Printf("Recovered from panic: %v\n", r)
        }
    }()
    
    // Your code that might panic
    panic("something went wrong")
}

type PanicDetails struct {
    StackTrace     string    // The stack trace of where the panic occurred. Potentially trimmed to provide more context
    Error          error     // The error that caused the panic
    Time           time.Time // The time when the panic occurred
    FullStackTrace string    // The complete stack trace including runtime frames
}

************************ FATAL ******************************
* There has been a catastrophic failure in your application *
********************* Error Details *************************
panic error: oh no! something went wrong deep in my service! :(
main.(*WindowService).call2
	at E:/wails/v3/examples/panic-handling/main.go:23
main.(*WindowService).call1
	at E:/wails/v3/examples/panic-handling/main.go:19
main.(*WindowService).GeneratePanic
	at E:/wails/v3/examples/panic-handling/main.go:15
*************************************************************

app := application.New(application.Options{
    Name: "My App",
    PanicHandler: func(panicDetails *application.PanicDetails) {
        fmt.Printf("*** Custom Panic Handler ***\n")
        fmt.Printf("Time: %s\n", panicDetails.Time)
        fmt.Printf("Error: %s\n", panicDetails.Error)
        fmt.Printf("Stacktrace: %s\n", panicDetails.StackTrace)
        fmt.Printf("Full Stacktrace: %s\n", panicDetails.FullStackTrace)
        
        // You could also:
        // - Log to a file
        // - Send to a crash reporting service
        // - Show a user-friendly error dialog
        // - Attempt to recover or restart the application
    },
})