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inline fun <reified T:AppCompatActivity> AppCompatActivity.startActivity() = 
          Intent (this, T::class.java)

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inline fun <reified T : AppCompatActivity> Activity.startActivityEtx() =
    Intent(this, T::class.java)
        .apply {
            startActivity(this)
        }

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fun Context.hasNetwork(): Boolean {
    val connectivityManager = getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        val activeNetwork = connectivityManager.activeNetwork ?: return false
        val capabilities = connectivityManager.getNetworkCapabilities(activeNetwork) ?: return false
        return when {
            capabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> true
            capabilities.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> true
            capabilities.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) -> true
            else -> false

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inline fun <reified E : Throwable> tryAndCatch(blockTry: () -> Unit, blockCatch: (E) -> Unit) {
    try {
        blockTry()
    } catch (e: Exception) {
        blockCatch(e as E)
    }
}

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fun EditText.onTextChanged(listener: (String) -> Unit) {
    this.addTextChangedListener(object : TextWatcher {
        override fun afterTextChanged(s: Editable?) { listener(s.toString()) }
        override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {}
        override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {}
    })
}

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fun EditText.onDone(callback: (String) -> Unit) {
    setOnEditorActionListener { _, actionId, _ ->
        if (actionId == EditorInfo.IME_ACTION_DONE) {
            callback.invoke(text.toString())
            true
        }
        false
    }
}

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val <T> T.makeExhaustive: T
    get() = this

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fun AppCompatActivity.hasPermissions(vararg permissions: String): Boolean {
    return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M)
        permissions.all { singlePermission ->
            applicationContext.checkSelfPermission(singlePermission) == PackageManager.PERMISSION_GRANTED
        }
    else true

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fun Activity.requestPermissions(vararg permissions: String, @IntRange(from = 0) requestCode: Int) =
        ActivityCompat.requestPermissions(this, permissions, requestCode)

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inline fun <reified T> Any.ofType(block: (T) -> Unit) {
    if (this is T) {
        block(this as T)
    }
}