[wallet] DD48: implement exchange deletion

bug 0008298

3 files changed, 48 insertions, 0 deletions

diff --git a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeAdapter.kt b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeAdapter.kt
index fa35660..cb294ac 100644
--- a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeAdapter.kt
+++ b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeAdapter.kt
@@ -33,6 +33,7 @@ interface ExchangeClickListener {
     fun onExchangeSelected(item: ExchangeItem)
     fun onManualWithdraw(item: ExchangeItem)
     fun onPeerReceive(item: ExchangeItem)
+    fun onExchangeDelete(item: ExchangeItem)
 }
 
 internal class ExchangeAdapter(
@@ -98,6 +99,10 @@ internal class ExchangeAdapter(
                         listener.onPeerReceive(item)
                         true
                     }
+                    R.id.action_delete -> {
+                        listener.onExchangeDelete(item)
+                        true
+                    }
                     else -> false
                 }
             }
diff --git a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeListFragment.kt b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeListFragment.kt
index c622d65..494b187 100644
--- a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeListFragment.kt
+++ b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeListFragment.kt
@@ -32,9 +32,11 @@ import androidx.lifecycle.Lifecycle.State.RESUMED
 import androidx.navigation.fragment.findNavController
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager.VERTICAL
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import net.taler.common.EventObserver
 import net.taler.common.fadeIn
 import net.taler.common.fadeOut
+import net.taler.common.showError
 import net.taler.wallet.MainViewModel
 import net.taler.wallet.R
 import net.taler.wallet.databinding.FragmentExchangeListBinding
@@ -101,6 +103,13 @@ open class ExchangeListFragment : Fragment(), ExchangeClickListener {
                 showError(error)
             }
         })
+        exchangeManager.deleteError.observe(viewLifecycleOwner, EventObserver { error ->
+            if (model.devMode.value == true) {
+                showError(error)
+            } else {
+                showError(error.userFacingMsg)
+            }
+        })
     }
 
     protected open fun onExchangeUpdate(exchanges: List<ExchangeItem>) {
@@ -136,4 +145,19 @@ open class ExchangeListFragment : Fragment(), ExchangeClickListener {
         findNavController().navigate(R.id.action_global_receiveFunds)
     }
 
+    override fun onExchangeDelete(item: ExchangeItem) {
+        val optionsArray = arrayOf(getString(R.string.exchange_delete_force))
+        val checkedArray = BooleanArray(1) { false }
+
+        MaterialAlertDialogBuilder(requireContext(), R.style.MaterialAlertDialog_Material3)
+            .setTitle(R.string.exchange_delete)
+            .setMultiChoiceItems(optionsArray, checkedArray) { _, which, isChecked ->
+                checkedArray[which] = isChecked
+            }
+            .setNegativeButton(R.string.transactions_delete) { _, _ ->
+                exchangeManager.delete(item.exchangeBaseUrl, checkedArray[0])
+            }
+            .setPositiveButton(R.string.cancel) { _, _ -> }
+            .show()
+    }
 }
diff --git a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt
index 5d76885..eb01cab 100644
--- a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt
+++ b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt
@@ -59,6 +59,9 @@ class ExchangeManager(
     private val mListError = MutableLiveData<Event<TalerErrorInfo>>()
     val listError: LiveData<Event<TalerErrorInfo>> = mListError
 
+    private val mDeleteError = MutableLiveData<Event<TalerErrorInfo>>()
+    val deleteError: LiveData<Event<TalerErrorInfo>> = mDeleteError
+
     var withdrawalExchange: ExchangeItem? = null
 
     private fun list(): LiveData<List<ExchangeItem>> {
@@ -92,6 +95,22 @@ class ExchangeManager(
         }
     }
 
+    fun delete(exchangeUrl: String, purge: Boolean = false) = scope.launch {
+        mProgress.value = true
+        api.request<Unit>("deleteExchange") {
+            put("exchangeBaseUrl", exchangeUrl)
+            put("purge", purge)
+        }.onError {
+            Log.e(TAG, "Error deleting exchange: $it")
+            mProgress.value = false
+            mDeleteError.value = it.toEvent()
+        }.onSuccess {
+            mProgress.value = false
+            Log.d(TAG, "Exchange $exchangeUrl deleted")
+            list()
+        }
+    }
+
     fun findExchangeForCurrency(currency: String): Flow<ExchangeItem?> = flow {
         emit(findExchange(currency))
     }