Store anonymized call numbers in shared preferences

app/src/main/java/partisan/weforge/xyz/pulse/CallRedirectionService.kt

@@ -61,7 +61,9 @@ class CallRedirectionService : CallRedirectionService() {
         initialPhoneAccount: PhoneAccountHandle,
         allowInteractiveResponse: Boolean,
     ) {
-        Log.d("Redirection", "onPlaceCall triggered: uri=$handle, interactive=$allowInteractiveResponse")
+        val phoneNumber = handle.schemeSpecificPart
+        val numberAlias = getAnonymizedAlias(phoneNumber)
+        Log.d("Redirection", "onPlaceCall triggered: alias=$numberAlias, interactive=$allowInteractiveResponse")
 
         val capabilities = connectivityManager
             ?.getNetworkCapabilities(connectivityManager?.activeNetwork)
@@ -100,10 +102,6 @@ class CallRedirectionService : CallRedirectionService() {
             return
         }
 
-        val phoneNumber = handle.schemeSpecificPart
-        val numberAlias = getAnonymizedNumberAlias(phoneNumber)
-        Log.d("Redirection", "Processing call to: $numberAlias")
-
         if (prefs.redirectInternationalOnly && !isInternationalNumber(phoneNumber)) {
             Log.d("Redirection", "Aborting: number $numberAlias is not international and pref requires it")
             placeCallUnmodified()
@@ -116,6 +114,8 @@ class CallRedirectionService : CallRedirectionService() {
             return
         }
         
+        Log.d("Redirection", "Number $numberAlias is not in filters, processing redirection...")
+
         val records: Array<Record>
         try {
             records = getRecordsFromPhoneNumber(phoneNumber)
@@ -201,8 +201,30 @@ class CallRedirectionService : CallRedirectionService() {
     }
 
     private fun getAnonymizedAlias(number: String): String {
-        val contactId = getContactIdByPhoneNumber(number)
+        val prefs = getSharedPreferences("anonymized_numbers", MODE_PRIVATE)
-        return if (contactId != null) "#$contactId" else "#???"
+
+        // Return existing alias if already mapped
+        val existing = prefs.getString(number, null)
+        if (existing != null) return existing
+
+        // Start from current counter
+        var counter = prefs.getInt("counter", 1)
+        var alias: String
+
+        // Find the first unused alias (safety check)
+        while (true) {
+            alias = "#$counter"
+            if (!prefs.all.containsValue(alias)) break
+            counter++
+        }
+
+        // Store new alias and increment counter
+        prefs.edit()
+            .putString(number, alias)
+            .putInt("counter", counter + 1)
+            .apply()
+
+        return alias
     }
 
     private fun isInternationalNumber(phoneNumber: String): Boolean {