Chargeprice: implement currency selection (#86)

app/src/main/java/net/vonforst/evmap/storage/PreferenceDataSource.kt

@@ -122,4 +122,10 @@ class PreferenceDataSource(val context: Context) {
         set(value) {
             sp.edit().putBoolean("chargeprice_show_provider_customer_tariffs", value).apply()
         }
+
+    var chargepriceCurrency: String
+        get() = sp.getString("chargeprice_currency", null) ?: "EUR"
+        set(value) {
+            sp.edit().putString("chargeprice_currency", value).apply()
+        }
 }

app/src/main/java/net/vonforst/evmap/ui/BindingAdapters.kt

@@ -255,7 +255,7 @@ fun currency(currency: String): String {
         "USD" -> "$"
         "DKK", "SEK", "NOK" -> "kr."
         "PLN" -> "zł"
-        "CHF" -> "Fr."
+        "CHF" -> "Fr. "
         "CZK" -> "Kč"
         "GBP" -> "£"
         "HRK" -> "kn"

app/src/main/java/net/vonforst/evmap/viewmodel/ChargepriceViewModel.kt

@@ -173,7 +173,8 @@ class ChargepriceViewModel(application: Application, chargepriceApiKey: String)
                     options = ChargepriceOptions(
                         batteryRange = batteryRange.value!!.map { it.toDouble() },
                         providerCustomerTariffs = prefs.chargepriceShowProviderCustomerTariffs,
-                        maxMonthlyFees = if (prefs.chargepriceNoBaseFee) 0.0 else null
+                        maxMonthlyFees = if (prefs.chargepriceNoBaseFee) 0.0 else null,
+                        currency = prefs.chargepriceCurrency
                     )
                 }, getChargepriceLanguage())
                 val meta =