Implement priority token.

internal/game/view.go

@@ -17,17 +17,19 @@ type PlayerView struct {
 
 // View is the full game state as seen by one player.
 type View struct {
-	GameID     string        `json:"gameId"`
-	Code       string        `json:"code"`
-	Phase      Phase         `json:"phase"`
-	Round      int           `json:"round"`
-	MaxRounds  int           `json:"maxRounds"`
-	MaxPets    int           `json:"maxPets"`
-	YouSeat    int           `json:"youSeat"`
-	Turn       int           `json:"turn"`
-	ShopRow    []Card        `json:"shopRow"`
-	DeckCounts []int         `json:"deckCounts"` // remaining shop cards per tier
-	Players    []PlayerView  `json:"players"`
+	GameID    string `json:"gameId"`
+	Code      string `json:"code"`
+	Phase     Phase  `json:"phase"`
+	Round     int    `json:"round"`
+	MaxRounds int    `json:"maxRounds"`
+	MaxPets   int    `json:"maxPets"`
+	YouSeat   int    `json:"youSeat"`
+	Turn      int    `json:"turn"`
+	// PrioritySeat is the seat currently holding the priority token.
+	PrioritySeat int          `json:"prioritySeat"`
+	ShopRow      []Card       `json:"shopRow"`
+	DeckCounts   []int        `json:"deckCounts"` // remaining shop cards per tier
+	Players      []PlayerView `json:"players"`
 	// Pending is included for everyone so opponents see a trade is in
 	// progress, but the revealed options are only shown to the trader.
 	Pending    *PendingTrade `json:"pending,omitempty"`
@@ -38,16 +40,17 @@ type View struct {
 // ViewFor builds the state visible to the given player.
 func (g *Game) ViewFor(playerID string) View {
 	v := View{
-		GameID:     g.ID,
-		Code:       g.Code,
-		Phase:      g.Phase,
-		Round:      g.Round,
-		MaxRounds:  MaxRounds,
-		MaxPets:    MaxPets,
-		YouSeat:    -1,
-		Turn:       g.Turn,
-		ShopRow:    g.ShopRow,
-		WinnerSeat: g.WinnerSeat,
+		GameID:       g.ID,
+		Code:         g.Code,
+		Phase:        g.Phase,
+		Round:        g.Round,
+		MaxRounds:    MaxRounds,
+		MaxPets:      MaxPets,
+		YouSeat:      -1,
+		Turn:         g.Turn,
+		PrioritySeat: g.PrioritySeat,
+		ShopRow:      g.ShopRow,
+		WinnerSeat:   g.WinnerSeat,
 	}
 	for _, deck := range g.ShopDecks {
 		v.DeckCounts = append(v.DeckCounts, len(deck))