package casino

import (
	"sync"
	"testing"
	"time"
)

// rebet is called through Manager.Rebet and reads the seat map; it must take
// the table lock like every other game method, or a future caller off the
// owner goroutine would race the live seat state.

func TestRebetTakesTheTableLock(t *testing.T) {
	blackjack := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack}, newTestRand())
	blackjack.join("alice")
	assertRebetWaitsForLock(t, "blackjack", &blackjack.mu, func() { blackjack.rebet("alice") })

	baccarat := newBaccaratTable(1, TableConfig{ID: "baccarat", Game: GameBaccarat}, newTestRand())
	baccarat.join("alice")
	assertRebetWaitsForLock(t, "baccarat", &baccarat.mu, func() { baccarat.rebet("alice") })
}

func assertRebetWaitsForLock(t *testing.T, name string, mu *sync.Mutex, rebet func()) {
	t.Helper()
	mu.Lock()
	done := make(chan struct{})
	go func() {
		rebet()
		close(done)
	}()
	select {
	case <-done:
		mu.Unlock()
		t.Fatalf("%s rebet read the seat map without the table lock", name)
	case <-time.After(50 * time.Millisecond):
	}
	mu.Unlock()
	select {
	case <-done:
	case <-time.After(2 * time.Second):
		t.Fatalf("%s rebet did not return after the lock was released", name)
	}
}

// A lone player at the table is deliberately never timed out: neither the
// action window nor the turn ceiling advances, so the hand waits for the
// player's own decision. (Multiplayer turns are still bounded; see
// TestBlackjackWarnsOnceThenAutoStands.)

func TestLoneBettorHasNoTurnTimer(t *testing.T) {
	table := newBlackjackTable(1, TableConfig{ID: "blackjack", Game: GameBlackjack,
		Blackjack: BlackjackConfig{ActionTicks: 2}}, newTestRand())
	table.shoe = tableauShoe(
		card{rank: "10"}, card{rank: "7"}, // dealer 17
		card{rank: "10"}, card{rank: "6"}, // alice 16
	)
	wallet := &testWallet{credits: 100}
	table.join("alice")
	table.bet("alice", "", 10, wallet)
	if table.phase != blackjackPlaying {
		t.Fatalf("setup: expected a dealt hand (phase=%s)", table.phase)
	}

	// Far past both the action window and the old turn ceiling, the hand must
	// still be waiting: neither deadline runs for a lone player.
	ceiling := table.Rules.ActionTicks * loneTurnGrace
	for i := 0; i < ceiling+5; i++ {
		table.tick()
	}
	if table.phase != blackjackPlaying {
		t.Fatalf("lone player's hand was settled by a timer (phase=%s)", table.phase)
	}
	if table.ceiling.clock != 0 || table.timer.clock != 0 {
		t.Fatalf("a lone player's timer advanced: ceiling=%d timer=%d", table.ceiling.clock, table.timer.clock)
	}
	if len(wallet.open) != 1 {
		t.Fatalf("stake resolved without player action: %+v", wallet.open)
	}
}