wallet-core: implement getDepositWireTypesForCurrency

3 files changed, 83 insertions, 1 deletions

diff --git a/packages/taler-util/src/wallet-types.ts b/packages/taler-util/src/wallet-types.ts
index d23780145..8fa5b1e69 100644
--- a/packages/taler-util/src/wallet-types.ts
+++ b/packages/taler-util/src/wallet-types.ts
@@ -3372,3 +3372,30 @@ export const codecForHintNetworkAvailabilityRequest =
     buildCodecForObject<HintNetworkAvailabilityRequest>()
       .property("isNetworkAvailable", codecForBoolean())
       .build("HintNetworkAvailabilityRequest");
+
+export interface GetDepositWireTypesForCurrencyRequest {
+  currency: string;
+  /**
+   * Optional scope info to further restrict the result.
+   * Currency must match the currency field.
+   */
+  scopeInfo?: ScopeInfo;
+}
+
+export const codecForGetDepositWireTypesForCurrencyRequest =
+  (): Codec<GetDepositWireTypesForCurrencyRequest> =>
+    buildCodecForObject<GetDepositWireTypesForCurrencyRequest>()
+      .property("currency", codecForString())
+      .property("scopeInfo", codecOptional(codecForScopeInfo()))
+      .build("GetDepositWireTypesForCurrencyRequest");
+
+/**
+ * Response with wire types that are supported for a deposit.
+ *
+ * In the future, we might surface more information here, such as debit restrictions
+ * by the exchange, which then can be shown by UIs to the user before they
+ * enter their payment information.
+ */
+export interface GetDepositWireTypesForCurrencyResponse {
+  wireTypes: string[];
+}
diff --git a/packages/taler-wallet-core/src/wallet-api-types.ts b/packages/taler-wallet-core/src/wallet-api-types.ts
index 398feddac..c54ec1360 100644
--- a/packages/taler-wallet-core/src/wallet-api-types.ts
+++ b/packages/taler-wallet-core/src/wallet-api-types.ts
@@ -71,6 +71,8 @@ import {
   GetContractTermsDetailsRequest,
   GetCurrencySpecificationRequest,
   GetCurrencySpecificationResponse,
+  GetDepositWireTypesForCurrencyRequest,
+  GetDepositWireTypesForCurrencyResponse,
   GetExchangeEntryByUrlRequest,
   GetExchangeEntryByUrlResponse,
   GetExchangeResourcesRequest,
@@ -266,7 +268,7 @@ export enum WalletApiOperation {
   Shutdown = "shutdown",
   HintNetworkAvailability = "hintNetworkAvailability",
   CanonicalizeBaseUrl = "canonicalizeBaseUrl",
-  GetDepositWireTypesForCurency = "getDepositWireTypesForCurrency",
+  GetDepositWireTypesForCurrency = "getDepositWireTypesForCurrency",
   TestingWaitTransactionsFinal = "testingWaitTransactionsFinal",
   TestingWaitRefreshesFinal = "testingWaitRefreshesFinal",
   TestingWaitTransactionState = "testingWaitTransactionState",
@@ -730,6 +732,16 @@ export type GetExchangeTosOp = {
 };
 
 /**
+ * Get wire types that can be used for a deposit operation
+ * with the provided currency.
+ */
+export type GetDepositWireTypesForCurrencyOp = {
+  op: WalletApiOperation.GetDepositWireTypesForCurrency;
+  request: GetDepositWireTypesForCurrencyRequest;
+  response: GetDepositWireTypesForCurrencyResponse;
+};
+
+/**
  * Get the current terms of a service of an exchange.
  */
 export type GetExchangeDetailedInfoOp = {
@@ -1369,6 +1381,7 @@ export type WalletOperations = {
   [WalletApiOperation.TestingGetReserveHistory]: TestingGetReserveHistoryOp;
   [WalletApiOperation.TestingResetAllRetries]: TestingResetAllRetriesOp;
   [WalletApiOperation.HintNetworkAvailability]: HintNetworkAvailabilityOp;
+  [WalletApiOperation.GetDepositWireTypesForCurrency]: GetDepositWireTypesForCurrencyOp;
 };
 
 export type WalletCoreRequestType<
diff --git a/packages/taler-wallet-core/src/wallet.ts b/packages/taler-wallet-core/src/wallet.ts
index 7a69fcb21..2a84d912d 100644
--- a/packages/taler-wallet-core/src/wallet.ts
+++ b/packages/taler-wallet-core/src/wallet.ts
@@ -103,6 +103,7 @@ import {
   codecForGetBalanceDetailRequest,
   codecForGetContractTermsDetails,
   codecForGetCurrencyInfoRequest,
+  codecForGetDepositWireTypesForCurrencyRequest,
   codecForGetExchangeEntryByUrlRequest,
   codecForGetExchangeResourcesRequest,
   codecForGetExchangeTosRequest,
@@ -215,6 +216,7 @@ import {
   getExchangeDetailedInfo,
   getExchangeResources,
   getExchangeTos,
+  getExchangeWireDetailsInTx,
   listExchanges,
   lookupExchangeByUri,
 } from "./exchanges.js";
@@ -1316,6 +1318,46 @@ async function dispatchRequestInternal(
       const dbDump = await exportDb(wex.ws.idb);
       return dbDump;
     }
+    case WalletApiOperation.GetDepositWireTypesForCurrency: {
+      const req =
+        codecForGetDepositWireTypesForCurrencyRequest().decode(payload);
+      const wtSet: Set<string> = new Set();
+      await wex.db.runReadOnlyTx(
+        { storeNames: ["exchanges", "exchangeDetails"] },
+        async (tx) => {
+          const exchanges = await tx.exchanges.getAll();
+          for (const exchange of exchanges) {
+            const det = await getExchangeWireDetailsInTx(tx, exchange.baseUrl);
+            if (!det) {
+              continue;
+            }
+            if (det.currency !== req.currency) {
+              continue;
+            }
+            for (const acc of det.wireInfo.accounts) {
+              let usable = true;
+              for (const dr of acc.debit_restrictions) {
+                if (dr.type === "deny") {
+                  usable = false;
+                  break;
+                }
+              }
+              if (!usable) {
+                break;
+              }
+              const parsedPayto = parsePaytoUri(acc.payto_uri);
+              if (!parsedPayto) {
+                continue;
+              }
+              wtSet.add(parsedPayto.targetType);
+            }
+          }
+        },
+      );
+      return {
+        wireTypes: [...wtSet],
+      };
+    }
     case WalletApiOperation.ListGlobalCurrencyExchanges: {
       const resp: ListGlobalCurrencyExchangesResponse = {
         exchanges: [],