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package mx.trackermap.TrackerMap.controllers
import android.content.Context
import android.net.ConnectivityManager
import android.net.Network
import android.net.NetworkCapabilities
import android.net.NetworkRequest
import android.os.Build
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.asStateFlow
import mx.trackermap.TrackerMap.Injectable
actual class NetworkController(context: Context): Injectable {
private val networkRequest = NetworkRequest.Builder().build()
private val connectivityManager: ConnectivityManager
private val _networkAvailable = MutableStateFlow<Boolean?>(null)
actual val networkAvailable = _networkAvailable.asStateFlow()
private val networkCallback = object: ConnectivityManager.NetworkCallback() {
override fun onCapabilitiesChanged(
network: Network,
networkCapabilities: NetworkCapabilities
) {
super.onCapabilitiesChanged(network, networkCapabilities)
_networkAvailable.value = checkNetworkAccess(networkCapabilities)
}
override fun onLost(network: Network) {
super.onLost(network)
_networkAvailable.value = false
}
}
init {
connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
_networkAvailable.value = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
checkNetworkAccess(connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork))
} else {
connectivityManager.activeNetworkInfo?.isConnected == true
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
connectivityManager.registerDefaultNetworkCallback(networkCallback)
} else {
connectivityManager.registerNetworkCallback(networkRequest, networkCallback)
}
}
private fun checkNetworkAccess(capabilities: NetworkCapabilities?) =
capabilities != null
&& capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
&& if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)
} else true
}
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