show earliest deposit expiration when withdrawing

src/pages/confirm-create-reserve.tsx

@@ -194,6 +194,7 @@ function renderReserveCreationDetails(rci: ReserveCreationInfo|null) {
       <h3>Overview</h3>
       <p>{i18n.str`Withdrawal fees: ${withdrawFeeStr}`}</p>
       <p>{i18n.str`Rounding loss: ${overheadStr}`}</p>
+      <p>{i18n.str`Earliest expiration (for deposit): ${moment.unix(rci.earliestDepositExpiration).fromNow()}`}</p>
       <h3>Coin Fees</h3>
       <table className="pure-table">
         <thead>
@@ -439,7 +440,7 @@ class ExchangeSelection extends ImplicitStateComponent<ExchangeSelectionProps> {
           {i18n.str`Change Exchange Provider`}
         </button>
         <br/>
-        <Collapsible initiallyCollapsed={true} title="Fee Details">
+        <Collapsible initiallyCollapsed={true} title="Fee and Spending Details">
           {renderReserveCreationDetails(this.reserveCreationInfo())}
         </Collapsible>
         <Collapsible initiallyCollapsed={true} title="Auditor Details">

src/types.ts

@@ -253,6 +253,7 @@ export interface ReserveCreationInfo {
   wireFees: ExchangeWireFeesRecord;
   isAudited: boolean;
   isTrusted: boolean;
+  earliestDepositExpiration: number;
 }
 
 

src/wallet.ts

@@ -1377,6 +1377,14 @@ export class Wallet {
 
     let {isTrusted, isAudited} = await this.getExchangeTrust(exchangeInfo);
 
+    let earliestDepositExpiration = Infinity;;
+    for (let denom of selectedDenoms) {
+      let expireDeposit = getTalerStampSec(denom.stampExpireDeposit)!;
+      if (expireDeposit < earliestDepositExpiration) {
+        earliestDepositExpiration = expireDeposit;
+      }
+    }
+
     let ret: ReserveCreationInfo = {
       exchangeInfo,
       selectedDenoms,
@@ -1385,6 +1393,7 @@ export class Wallet {
       isAudited,
       isTrusted,
       withdrawFee: acc,
+      earliestDepositExpiration,
       overhead: Amounts.sub(amount, actualCoinCost).amount,
     };
     return ret;