feat: grant paid currency and draw tickets by mail

go/internal/server/player/wallet.go

@@ -313,6 +313,11 @@ func (s *Wallet) GrantQuestOnce(identity string, rewards []gamedata.Reward) (Cur
 	next := cloneWallet(s.state)
 	for _, reward := range rewards {
 		switch reward.Type {
+		case 2:
+			if math.MaxUint64-next.Jewelry < reward.Count {
+				return Currency{}, errors.New("player: paid jewelry overflow")
+			}
+			next.Jewelry += reward.Count
 		case 3:
 			if math.MaxUint64-next.FreeJewelry < reward.Count {
 				return Currency{}, errors.New("player: free jewelry overflow")

go/internal/server/player/wallet_test.go

@@ -1,6 +1,7 @@
 package player
 
 import (
+	"math"
 	"path/filepath"
 	"testing"
 
@@ -13,7 +14,7 @@ func TestWalletGrantPersistsAndIsIdempotent(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	rewards := []gamedata.Reward{{Type: 4, Count: 1500}, {Type: 3, Count: 70}, {Type: 12, Count: 45}, {Type: 25, ID: 210, Count: 1}}
+	rewards := []gamedata.Reward{{Type: 2, Count: 100000000}, {Type: 4, Count: 1500}, {Type: 3, Count: 70}, {Type: 12, Count: 45}, {Type: 25, ID: 210, Count: 1}}
 	if _, err := wallet.GrantQuestOnce("quest:1", rewards); err != nil {
 		t.Fatal(err)
 	}
@@ -25,7 +26,20 @@ func TestWalletGrantPersistsAndIsIdempotent(t *testing.T) {
 		t.Fatal(err)
 	}
 	got := wallet.Snapshot()
-	if got.Gold != 1600 || got.FreeJewelry != 70 || got.Catalyst != 45 {
+	if got.Jewelry != 100000000 || got.Gold != 1600 || got.FreeJewelry != 70 || got.Catalyst != 45 {
 		t.Fatalf("wallet=%+v", got)
 	}
 }
+
+func TestWalletPaidJewelryOverflowDoesNotCommitGrant(t *testing.T) {
+	wallet, err := OpenWallet(testStore(filepath.Join(t.TempDir(), "wallet.json")), Currency{Jewelry: math.MaxUint64})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := wallet.GrantQuestOnce("paid-overflow", []gamedata.Reward{{Type: 4, Count: 10}, {Type: 2, Count: 1}}); err == nil {
+		t.Fatal("paid jewelry overflow accepted")
+	}
+	if got := wallet.Snapshot(); got.Jewelry != math.MaxUint64 || got.Gold != 0 || wallet.WasGranted("paid-overflow") {
+		t.Fatalf("failed grant changed wallet: %+v", got)
+	}
+}