autocomplete with saved contacts in transfer page

implements #49

app/src/main/java/sh/sar/basedbank/ui/home/TransferFragment.kt

@@ -40,9 +40,11 @@ import kotlinx.coroutines.withContext
 import sh.sar.basedbank.BasedBankApp
 import sh.sar.basedbank.R
 import sh.sar.basedbank.api.models.BankAccount
+import sh.sar.basedbank.api.models.BankContact
 import sh.sar.basedbank.api.mib.MibIpsAccountInfo
 import sh.sar.basedbank.databinding.FragmentTransferBinding
 import sh.sar.basedbank.databinding.ItemAccountDropdownBinding
+import sh.sar.basedbank.databinding.ItemPickerRowBinding
 import sh.sar.basedbank.databinding.ItemPickerSectionHeaderBinding
 import sh.sar.basedbank.ui.home.transfer.BmlTransferHandler
 import sh.sar.basedbank.ui.home.transfer.FahipayTransferHandler
@@ -92,6 +94,7 @@ class TransferFragment : Fragment() {
     private val dropdownProfileImageCache = mutableMapOf<String, Bitmap>()
 
     private var accountDropdownAdapter: AccountDropdownAdapter? = null
+    private var contactDropdownAdapter: ContactDropdownAdapter? = null
 
     /**
      * Owns everything BML-specific: sessions, the transfer itself, the business-profile OTP
@@ -305,6 +308,9 @@ class TransferFragment : Fragment() {
 
         setupFromDropdown()
         setupAccountLookup()
+        // Contact search dropdown on the To field needs viewModel.contacts populated —
+        // otherwise it stays empty until the contacts tab or picker sheet is opened first.
+        (activity as? HomeActivity)?.loadAllContacts()
 
         viewModel.hideAmounts.observe(viewLifecycleOwner) {
             accountDropdownAdapter?.notifyDataSetChanged()
@@ -327,7 +333,7 @@ class TransferFragment : Fragment() {
             // MFAISA source + a phone-number pick (e.g. a tagged M-Faisa recent) — re-run the
             // basicBeneDetails lookup so the recipient gets fully resolved before Send is enabled.
             if (selectedAccount?.bank == "MFAISA") {
-                binding.etTo.setText(accountNumber)
+                binding.etTo.setText(accountNumber, false)
                 mfaisaHandler().searchRecipient(accountNumber)
                 return@setFragmentResultListener
             }
@@ -408,7 +414,7 @@ class TransferFragment : Fragment() {
                 binding.cardToInfo.visibility = View.VISIBLE
                 if (savedToImageHash != null) loadToPhoto(savedToImageHash!!, isProfile = resolvedToOwnAccount != null)
             } else if (savedToText.isNotEmpty()) {
-                binding.etTo.setText(savedToText)
+                binding.etTo.setText(savedToText, false)
             }
             if (savedAmount.isNotEmpty()) binding.etAmount.setText(savedAmount)
             if (savedRemarks.isNotEmpty()) binding.etRemarks.setText(savedRemarks)
@@ -537,7 +543,7 @@ class TransferFragment : Fragment() {
                 resolvedToOwnAccount = null
                 binding.cardToInfo.visibility = View.GONE
                 binding.tilTo.visibility = View.VISIBLE
-                binding.etTo.setText("")
+                binding.etTo.setText("", false)
             }
         } else {
             binding.tilTo.hint = getString(R.string.transfer_to)
@@ -551,7 +557,7 @@ class TransferFragment : Fragment() {
                 resolvedToOwnAccount = null
                 binding.cardToInfo.visibility = View.GONE
                 binding.tilTo.visibility = View.VISIBLE
-                binding.etTo.setText("")
+                binding.etTo.setText("", false)
             }
         }
         // The picker and QR-scan icons live alongside the tilTo input. Keep them in sync with
@@ -764,6 +770,30 @@ class TransferFragment : Fragment() {
                 updateTransferButton()
             }
         }
+
+        setupContactDropdown()
+    }
+
+    /** Live "search contacts as you type" dropdown on the To field (shown once 3+ chars are entered). */
+    private fun setupContactDropdown() {
+        val adapter = ContactDropdownAdapter(requireContext()) { selectedAccount?.bank == "MFAISA" }
+        contactDropdownAdapter = adapter
+        binding.etTo.setAdapter(adapter)
+
+        viewModel.contacts.observe(viewLifecycleOwner) { contacts ->
+            adapter.updateSource(contacts)
+        }
+
+        binding.etTo.setOnItemClickListener { _, _, position, _ ->
+            val contact = adapter.getContact(position) ?: return@setOnItemClickListener
+            prefillToDirectly(
+                accountNumber = contact.benefAccount,
+                displayName   = contact.benefNickName,
+                subtitle      = "${contact.benefBankName} · ${contact.benefAccount}",
+                colorHex      = contact.bankColor,
+                imageHash     = contact.customerImgHash
+            )
+        }
     }
 
     private fun lookupAccount() {
@@ -975,7 +1005,7 @@ class TransferFragment : Fragment() {
         binding.btnPickContact.visibility = View.VISIBLE
         binding.btnScanQr.visibility = View.VISIBLE
         binding.tilTo.error = null
-        binding.etTo.setText(accountNumber)
+        binding.etTo.setText(accountNumber, false)
         lookupAccount()
     }
 
@@ -1512,7 +1542,7 @@ class TransferFragment : Fragment() {
         binding.tilTo.visibility = View.VISIBLE
         binding.btnPickContact.visibility = View.VISIBLE
         binding.btnScanQr.visibility = View.VISIBLE
-        binding.etTo.setText("")
+        binding.etTo.setText("", false)
         binding.tilTo.error = null
         binding.tilAmount.error = null
     }
@@ -1782,4 +1812,59 @@ class TransferFragment : Fragment() {
             override fun convertResultToString(r: Any?) = ""
         }
     }
+
+    /** Filters [source] contacts by nickname/name/account number, shown once the query is 3+ chars. */
+    private inner class ContactDropdownAdapter(
+        private val context: Context,
+        private val isDisabled: () -> Boolean
+    ) : BaseAdapter(), Filterable {
+
+        private var source: List<BankContact> = emptyList()
+        private var filtered: List<BankContact> = emptyList()
+
+        fun updateSource(contacts: List<BankContact>) {
+            source = contacts
+        }
+
+        fun getContact(position: Int): BankContact? = filtered.getOrNull(position)
+
+        override fun getCount() = filtered.size
+        override fun getItem(position: Int) = filtered[position]
+        override fun getItemId(position: Int) = position.toLong()
+
+        override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
+            val contact = filtered[position]
+            val b = if (convertView?.tag is ItemPickerRowBinding) {
+                convertView.tag as ItemPickerRowBinding
+            } else {
+                ItemPickerRowBinding.inflate(LayoutInflater.from(context), parent, false).also { it.root.tag = it }
+            }
+            b.tvPrimary.text = contact.benefNickName
+            b.tvSecondary.text = "${contact.benefBankName} · ${contact.benefAccount}"
+            b.tvBalance.visibility = View.GONE
+            b.ivIcon.scaleType = android.widget.ImageView.ScaleType.CENTER_CROP
+            b.ivIcon.setImageBitmap(makeInitialsBitmap(contact.benefNickName, contact.bankColor))
+            return b.root
+        }
+
+        override fun getFilter() = object : Filter() {
+            override fun performFiltering(constraint: CharSequence?): FilterResults {
+                val query = constraint?.toString()?.trim().orEmpty()
+                val matches = if (isDisabled() || query.length < 3) emptyList() else source.filter {
+                    it.benefNickName.contains(query, ignoreCase = true) ||
+                        it.benefName.contains(query, ignoreCase = true) ||
+                        it.benefAccount.contains(query, ignoreCase = true)
+                }.take(8)
+                return FilterResults().apply { values = matches; count = matches.size }
+            }
+
+            @Suppress("UNCHECKED_CAST")
+            override fun publishResults(constraint: CharSequence?, results: FilterResults?) {
+                filtered = results?.values as? List<BankContact> ?: emptyList()
+                notifyDataSetChanged()
+            }
+
+            override fun convertResultToString(r: Any?) = ""
+        }
+    }
 }

app/src/main/res/layout/fragment_transfer.xml

@@ -148,12 +148,15 @@
                         app:endIconDrawable="@android:drawable/ic_menu_search"
                         app:endIconContentDescription="@string/transfer_lookup_account">
 
-                        <com.google.android.material.textfield.TextInputEditText
+                        <com.google.android.material.textfield.MaterialAutoCompleteTextView
                             android:id="@+id/etTo"
+                            style="@style/Widget.Material3.AutoCompleteTextView.OutlinedBox"
                             android:layout_width="match_parent"
                             android:layout_height="wrap_content"
                             android:inputType="textNoSuggestions"
-                            android:maxLines="1" />
+                            android:maxLines="1"
+                            android:completionThreshold="3"
+                            android:dropDownHeight="wrap_content" />
 
                     </com.google.android.material.textfield.TextInputLayout>