use EnBW AvailabilityDetector only for supported countries

app/src/main/java/net/vonforst/evmap/api/availability/AvailabilityDetector.kt

@@ -21,6 +21,7 @@ import java.util.concurrent.TimeUnit
 
 interface AvailabilityDetector {
     suspend fun getAvailability(location: ChargeLocation): ChargeLocationStatus
+    fun isCountrySupported(country: String, dataSource: String): Boolean
 }
 
 abstract class BaseAvailabilityDetector(private val client: OkHttpClient) : AvailabilityDetector {
@@ -157,8 +158,8 @@ private val okhttp = OkHttpClient.Builder()
     .cookieJar(JavaNetCookieJar(cookieManager))
     .build()
 val availabilityDetectors = listOf(
-    NewMotionAvailabilityDetector(okhttp),
-    EnBwAvailabilityDetector(okhttp)
+    EnBwAvailabilityDetector(okhttp),
+    NewMotionAvailabilityDetector(okhttp)
     /*ChargecloudAvailabilityDetector(
         okhttp,
         "606a0da0dfdd338ee4134605653d4fd8"
@@ -171,8 +172,12 @@ val availabilityDetectors = listOf(
 
 suspend fun getAvailability(charger: ChargeLocation): Resource<ChargeLocationStatus> {
     var value: Resource<ChargeLocationStatus>? = null
+    val country = charger.chargepriceData?.country
+        ?: charger.address?.country
+        ?: return Resource.error(null, null)
     withContext(Dispatchers.IO) {
         for (ad in availabilityDetectors) {
+            if (!ad.isCountrySupported(country, charger.dataSource)) continue
             try {
                 value = Resource.success(ad.getAvailability(charger))
                 break

app/src/main/java/net/vonforst/evmap/api/availability/ChargecloudAvailabilityDetector.kt

@@ -80,6 +80,10 @@ class ChargecloudAvailabilityDetector(
         }
     }
 
+    override fun isCountrySupported(country: String, dataSource: String): Boolean {
+        TODO("Not yet implemented")
+    }
+
     private fun getType(string: String): String {
         return when (string) {
             "IEC_62196_T2" -> Chargepoint.TYPE_2_UNKNOWN

app/src/main/java/net/vonforst/evmap/api/availability/EnBwAvailabilityDetector.kt

@@ -194,4 +194,32 @@ class EnBwAvailabilityDetector(client: OkHttpClient, baseUrl: String? = null) :
         )
     }
 
+    override fun isCountrySupported(country: String, dataSource: String): Boolean =
+        when (dataSource) {
+            // list of countries as of 2021/06/30, according to
+            // https://www.electrive.net/2021/06/30/enbw-expandiert-mit-ladenetz-in-drei-weitere-laender/
+            "goingelectric" -> country in listOf(
+                "Deutschland",
+                "Österreich",
+                "Schweiz",
+                "Frankreich",
+                "Belgien",
+                "Niederlande",
+                "Luxemburg",
+                "Liechtenstein",
+                "Italien",
+            )
+            "openchargemap" -> country in listOf(
+                "DE",
+                "AT",
+                "CH",
+                "FR",
+                "BE",
+                "NE",
+                "LU",
+                "LI",
+                "IT"
+            )
+            else -> false
+        }
 }

app/src/main/java/net/vonforst/evmap/api/availability/NewMotionAvailabilityDetector.kt

@@ -173,4 +173,9 @@ class NewMotionAvailabilityDetector(client: OkHttpClient, baseUrl: String? = nul
         )
     }
 
+    override fun isCountrySupported(country: String, dataSource: String): Boolean {
+        // NewMotion is our fallback
+        return true
+    }
+
 }