1 files changed, 186 insertions, 0 deletions
diff --git a/app/src/main/java/sh/lajo/buddy/ContactsObserver.kt b/app/src/main/java/sh/lajo/buddy/ContactsObserver.kt
new file mode 100644
index 0000000..50b7a48
--- /dev/null
+++ b/app/src/main/java/sh/lajo/buddy/ContactsObserver.kt
@@ -0,0 +1,186 @@
+package sh.lajo.buddy
+
+import android.Manifest
+import android.content.ContentResolver
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.database.ContentObserver
+import android.net.Uri
+import android.os.Handler
+import android.os.Looper
+import android.provider.ContactsContract
+import android.util.Log
+import androidx.core.content.ContextCompat
+
+class ContactsObserver(
+    private val context: Context,
+    private val contentResolver: ContentResolver
+) : ContentObserver(Handler(Looper.getMainLooper())) {
+
+    companion object {
+        private const val TAG = "ContactsObserver"
+    }
+
+    private var lastContactCount = -1
+
+    init {
+        // Initialize the contact count
+        lastContactCount = getContactCount()
+    }
+
+    override fun onChange(selfChange: Boolean) {
+        onChange(selfChange, null)
+    }
+
+    override fun onChange(selfChange: Boolean, uri: Uri?) {
+
+        // Check if we have READ_CONTACTS permission
+        if (ContextCompat.checkSelfPermission(
+                context,
+                Manifest.permission.READ_CONTACTS
+            ) != PackageManager.PERMISSION_GRANTED
+        ) {
+            Log.w(TAG, "No READ_CONTACTS permission, skipping contact change")
+            return
+        }
+
+        Log.d(TAG, "Contact change detected, URI: $uri")
+
+        // Get current contact count
+        val currentCount = getContactCount()
+
+        // If count increased, a contact was likely added
+        if (lastContactCount >= 0 && currentCount > lastContactCount) {
+            Log.d(TAG, "Contact added detected (count: $lastContactCount -> $currentCount)")
+            // Find and send the new contact(s)
+            findAndSendNewContacts()
+        }
+
+        lastContactCount = currentCount
+    }
+
+    private fun getContactCount(): Int {
+        try {
+            val cursor = contentResolver.query(
+                ContactsContract.Contacts.CONTENT_URI,
+                arrayOf(ContactsContract.Contacts._ID),
+                null,
+                null,
+                null
+            )
+            cursor?.use {
+                return it.count
+            }
+        } catch (e: Exception) {
+            Log.e(TAG, "Error getting contact count", e)
+        }
+        return 0
+    }
+
+    private fun findAndSendNewContacts() {
+        try {
+            // Query the most recently added contacts
+            val cursor = contentResolver.query(
+                ContactsContract.Contacts.CONTENT_URI,
+                arrayOf(
+                    ContactsContract.Contacts._ID,
+                    ContactsContract.Contacts.DISPLAY_NAME
+                ),
+                null,
+                null,
+                "${ContactsContract.Contacts.CONTACT_LAST_UPDATED_TIMESTAMP} DESC"
+            )
+
+            cursor?.use {
+                if (it.moveToFirst()) {
+                    // Get the most recent contact
+                    val contactId = it.getString(it.getColumnIndexOrThrow(ContactsContract.Contacts._ID))
+                    val name = it.getString(it.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME))
+
+                    val phoneNumbers = getPhoneNumbers(contactId)
+                    val emails = getEmails(contactId)
+
+                    // Send the contact info via WebSocket
+                    sendContactAddedEvent(name, phoneNumbers, emails)
+                }
+            }
+        } catch (e: Exception) {
+            Log.e(TAG, "Error finding new contacts", e)
+        }
+    }
+
+    private fun getPhoneNumbers(contactId: String): List<String> {
+        val phoneNumbers = mutableListOf<String>()
+        try {
+            val cursor = contentResolver.query(
+                ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
+                arrayOf(ContactsContract.CommonDataKinds.Phone.NUMBER),
+                "${ContactsContract.CommonDataKinds.Phone.CONTACT_ID} = ?",
+                arrayOf(contactId),
+                null
+            )
+
+            cursor?.use {
+                while (it.moveToNext()) {
+                    val number = it.getString(it.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.NUMBER))
+                    phoneNumbers.add(number)
+                }
+            }
+        } catch (e: Exception) {
+            Log.e(TAG, "Error getting phone numbers", e)
+        }
+        return phoneNumbers
+    }
+
+    private fun getEmails(contactId: String): List<String> {
+        val emails = mutableListOf<String>()
+        try {
+            val cursor = contentResolver.query(
+                ContactsContract.CommonDataKinds.Email.CONTENT_URI,
+                arrayOf(ContactsContract.CommonDataKinds.Email.ADDRESS),
+                "${ContactsContract.CommonDataKinds.Email.CONTACT_ID} = ?",
+                arrayOf(contactId),
+                null
+            )
+
+            cursor?.use {
+                while (it.moveToNext()) {
+                    val email = it.getString(it.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Email.ADDRESS))
+                    emails.add(email)
+                }
+            }
+        } catch (e: Exception) {
+            Log.e(TAG, "Error getting emails", e)
+        }
+        return emails
+    }
+
+    private fun sendContactAddedEvent(name: String, phoneNumbers: List<String>, emails: List<String>) {
+        Log.d(TAG, "Sending contact added event: $name, phones: $phoneNumbers, emails: $emails")
+
+        val intent = Intent(context, WebSocketService::class.java).apply {
+            action = WebSocketService.ACTION_SEND_CONTACT
+            putExtra(WebSocketService.EXTRA_CONTACT_NAME, name)
+            putExtra(WebSocketService.EXTRA_CONTACT_PHONES, phoneNumbers.toTypedArray())
+            putExtra(WebSocketService.EXTRA_CONTACT_EMAILS, emails.toTypedArray())
+        }
+
+        context.startForegroundService(intent)
+    }
+
+    fun register() {
+        contentResolver.registerContentObserver(
+            ContactsContract.Contacts.CONTENT_URI,
+            true,
+            this
+        )
+        Log.d(TAG, "ContactsObserver registered")
+    }
+
+    fun unregister() {
+        contentResolver.unregisterContentObserver(this)
+        Log.d(TAG, "ContactsObserver unregistered")
+    }
+}
+