package domain

import "testing"

func TestSingleEliminationAdvancement(t *testing.T) {
	tr, err := NewTournament("cup", "event", "Night Cup", []string{"a", "b", "c", "d"})
	if err != nil {
		t.Fatal(err)
	}
	tr.Rounds[0][0].WinnerTeamID = "a"
	if err := tr.Advance(0, 0); err != nil {
		t.Fatal(err)
	}
	tr.Rounds[0][1].WinnerTeamID = "d"
	if err := tr.Advance(0, 1); err != nil {
		t.Fatal(err)
	}
	if got := tr.Rounds[1][0]; got.TeamAID != "a" || got.TeamBID != "d" {
		t.Fatalf("unexpected final: %+v", got)
	}
	tr.Rounds[1][0].WinnerTeamID = "d"
	if err := tr.Advance(1, 0); err != nil {
		t.Fatal(err)
	}
	if tr.WinnerTeamID != "d" {
		t.Fatalf("winner = %q", tr.WinnerTeamID)
	}
}

func TestTournamentCreatesByeForNonPowerOfTwo(t *testing.T) {
	tr, err := NewTournament("cup", "event", "Cup", []string{"a", "b", "c"})
	if err != nil {
		t.Fatal(err)
	}
	if len(tr.Rounds) != 2 || len(tr.Rounds[0]) != 2 {
		t.Fatalf("unexpected bracket shape: %+v", tr.Rounds)
	}
	bye := tr.Rounds[0][1]
	if bye.TeamAID != "b" || bye.TeamBID != "" || bye.WinnerTeamID != "b" {
		t.Fatalf("unexpected bye: %+v", bye)
	}
	if tr.Rounds[1][0].TeamBID != "b" {
		t.Fatalf("bye was not advanced: %+v", tr.Rounds[1][0])
	}
}