val logger = LoggerFactory.getLogger(MyClass::class.java)

import android.util.Patterns

/**
 * [String.isValidEmail()]
 * Check for a Valid Email address
 * 
 * @return whether the input is valid for email address
 */
fun String.isValidEmail(): Boolean {
    val pattern = Patterns.EMAIL_ADDRESS
    val isEmail = pattern.matcher(this).matches()
    return this.isNotEmpty() && isEmail
}

class GodActivity : AppCompatActivity {

    override fun onStart() {
        with(ProcessLifecycleOwner.get()) {
            lifecycleScope.launch {
                lifecycle.repeatOnLifecycle(Lifecycle.State.RESUMED) {
                    startService()
                }
            }
        }
    }

    priavte suspend fun startService() {
        try {
            exponentialRetry {
                context.startService(
                    Intent(
                        context,
                        WebSocketService::class.java,
                    )
                )
            }

        } catch (e1: CancellationException) {
            // user has gone to the background before service was suceessflly started
            // the scope has beeen closed along with the process hence we cannot start a background service
        } catch (e2: IllegalStateException) {
            log(e2)
        }
    }
}