package casino

import (
	"math/rand"
	"reflect"
	"testing"
)

func TestRouletteHistoryTracksCompletedSpinsOnly(t *testing.T) {
	for _, double := range []bool{false, true} {
		table := rouletteFixture()
		table.Config.Roulette.DoubleZero = double
		table.join("a")
		wallet := &testWallet{chips: 1000}
		rng := rand.New(rand.NewSource(7))
		wheel := rouletteWheel(double)
		var expected []string
		var first *RouletteSnapshot
		for i := 0; i < rouletteHistoryLimit+5; i++ {
			table.bet("a", "red", 1, wallet)
			before := table.view()
			if !reflect.DeepEqual(before.History, expected) {
				t.Fatalf("history changed on bet: %v", before.History)
			}
			// Two betting ticks, then two spinning ticks. No sample until the last.
			for j := 0; j < 3; j++ {
				table.tick()
				if !reflect.DeepEqual(table.view().History, expected) {
					t.Fatal("history revealed before settlement")
				}
			}
			events := table.tick()
			result := events[0].Snapshot.(*RouletteSnapshot)
			expected = append(expected, wheel[rng.Intn(len(wheel))])
			if len(expected) > rouletteHistoryLimit {
				expected = expected[1:]
			}
			if !reflect.DeepEqual(result.History, expected) || result.Pockets[2] != expected[len(expected)-1] {
				t.Fatalf("wrong result history: %v, want %v", result.History, expected)
			}
			if i == 0 {
				first = result
			}
			if !reflect.DeepEqual(table.view().History, expected) {
				t.Fatal("round reset lost history")
			}
		}
		if len(first.History) != 1 || first.History[0] != first.Pockets[2] {
			t.Fatal("later spins mutated an earlier snapshot")
		}
		snapshot := table.view()
		snapshot.History[0] = "bad"
		if !reflect.DeepEqual(table.view().History, expected) {
			t.Fatal("snapshot aliases engine history")
		}
		table.refundAll()
		table.tick()
		if !reflect.DeepEqual(table.view().History, expected) {
			t.Fatal("refund or idle tick changed history")
		}
		if len(rouletteFixture().view().History) != 0 {
			t.Fatal("history leaked to another table")
		}
	}
}

func TestRouletteCancelledSpinDoesNotEnterHistory(t *testing.T) {
	table := rouletteFixture()
	table.join("a")
	table.bet("a", "red", 1, &testWallet{chips: 100})
	table.tick()
	table.tick()
	table.markDisconnected("a")
	table.tick()
	table.tick()
	if len(table.view().History) != 0 {
		t.Fatal("cancelled spin recorded a result")
	}
}