package game

import (
	"os"
	"path/filepath"
	"regexp"
	"strings"
	"testing"

	"thehouseoficarus/internal/casino"
	"thehouseoficarus/internal/combat"
	"thehouseoficarus/internal/engine"
	"thehouseoficarus/internal/net"
	"thehouseoficarus/internal/player"
	"thehouseoficarus/internal/world"
)

func stripANSI(s string) string {
	return regexp.MustCompile(`\x1b\[[0-9;]*m`).ReplaceAllString(s, "")
}

func uxCasinoGame(t *testing.T) (*Game, *net.Session, *casinoTestConn) {
	t.Helper()
	dir := t.TempDir()
	if err := os.MkdirAll(filepath.Join(dir, "rooms"), 0755); err != nil {
		t.Fatal(err)
	}
	room := "name: Casino\ncasino_tables:\n  - id: bj1\n    game: blackjack\n    min_bet: 1\n    max_bet: 100\n    blackjack:\n      action_ticks: 25\n  - id: bac1\n    game: baccarat\n    min_bet: 5\n    max_bet: 100\n"
	if err := os.WriteFile(filepath.Join(dir, "rooms", "1.yaml"), []byte(room), 0644); err != nil {
		t.Fatal(err)
	}
	if err := os.MkdirAll(filepath.Join(dir, "players", "characters"), 0o755); err != nil {
		t.Fatal(err)
	}
	p := player.New("alice")
	sess := &net.Session{Player: p, Conn: &casinoTestConn{}}
	g := &Game{
		Deps:          Deps{World: world.New(dir), AccountStore: player.NewAccountStore(dir), Ticks: engine.New()},
		Casino:        casino.NewManager(1),
		Combat:        combat.NewTracker(),
		safespot:      NewSafespotManager(),
		restTimers:    make(map[string]uint64),
		loggedInChars: map[string]*net.Session{"alice": sess},
	}
	p.Credits = 100
	p.RoomID = 1
	return g, sess, sess.Conn.(*casinoTestConn)
}

func TestPayoutCommandRemoved(t *testing.T) {
	if class := classifyCommand("payout"); class != ClassUnknown {
		t.Fatalf("payout is still registered as %v", class)
	}
}

func TestPlaySoleChoiceNeedsNoName(t *testing.T) {
	g, sess, _ := casinoCrapsGame(t, "name: Solo\ncasino_tables:\n  - id: solo\n    game: blackjack\n    min_bet: 1\n    max_bet: 100\n")
	g.executePlay(sess, nil, "play")
	table, ok := g.Casino.Participation("alice")
	if !ok || table == nil || table.Config.ID != "solo" {
		t.Fatal("play with a sole choice did not seat the player")
	}
}

func TestVideoPokerConciseAliases(t *testing.T) {
	room := "name: Parlor\ncasino_tables:\n" +
		"- id: vp\n  game: video_poker\n  max_players: 1\n  video_poker: {cabinet: classic, payout: low}\n" +
		"- id: ux\n  game: video_poker\n  max_players: 1\n  video_poker: {cabinet: ultimate_x_single, payout: low}\n" +
		"- id: uxm\n  game: video_poker\n  max_players: 1\n  video_poker: {cabinet: ultimate_x_multi, payout: low}\n" +
		"- id: stp\n  game: video_poker\n  max_players: 1\n  video_poker: {cabinet: super_times_pay, payout: low}\n" +
		"- id: hr\n  game: video_poker\n  max_players: 1\n  video_poker: {cabinet: hot_roll, payout: low}\n"
	g, _, _ := casinoCrapsGame(t, room)
	choices := g.casinoChoices(1)
	for input, want := range map[string]string{
		"vp": "vp", "poker": "vp", "classic": "vp", "video_poker": "vp",
		"ux": "ux", "ultimate_x": "ux", "ultimate_x_single": "ux",
		"uxm": "uxm", "ultimate_x_multi": "uxm", "ultimate_x_multi_hand": "uxm",
		"stp": "stp", "super_times": "stp", "super_times_pay": "stp",
		"hr": "hr", "hot_roll": "hr",
	} {
		choice, ok := resolveCasinoChoice(choices, input)
		if !ok || choice.address != want {
			t.Fatalf("play %s resolved to %q (ok=%v), want %q", input, choice.address, ok, want)
		}
	}
}

func TestCasinoCommandAbbreviations(t *testing.T) {
	g, sess, _ := uxCasinoGame(t)
	// Unseated players get no casino shortcuts.
	if got, ok := g.casinoAbbreviation(sess, "b"); ok {
		t.Fatalf("unseated abbreviation resolved to %q", got)
	}
	g.executePlay(sess, []string{"bj"}, "play bj")
	for input, want := range map[string]string{
		"b": "bet", "be": "bet", "spl": "split", "sp": "split", "su": "surrender",
		"ins": "insurance", "wa": "watch", "ta": "table",
		"li": "list", "ga": "game", "sto": "stop", "ru": "rules",
		// The terse aliases resolve only because their verb is a blackjack verb.
		"h": "hit", "st": "stand", "dd": "double",
	} {
		got, ok := g.casinoAbbreviation(sess, input)
		if !ok || got != want {
			t.Fatalf("%q resolved to %q (ok=%v), want %q", input, got, ok, want)
		}
	}
	// No other game's verbs leak into a blackjack table.
	for _, input := range []string{"ro", "rol", "ra", "au", "dr", "pa", "ha", "ho"} {
		if got, ok := g.casinoAbbreviation(sess, input); ok {
			t.Fatalf("blackjack %q unexpectedly abbreviated to %q", input, got)
		}
	}
	// Exact commands keep their meaning: movement, info, and whole words that
	// are already real commands.
	for _, input := range []string{"n", "s", "e", "w", "i", "l", "hit"} {
		if got, ok := g.casinoAbbreviation(sess, input); ok {
			t.Fatalf("%q unexpectedly abbreviated to %q", input, got)
		}
	}
}

func TestCasinoAbbreviationsAreGameScoped(t *testing.T) {
	// Baccarat has neither split nor spin, so "sp" matches nothing there.
	g, sess, _ := uxCasinoGame(t)
	g.executePlay(sess, []string{"bac"}, "play bac")
	for _, input := range []string{"sp", "spl", "ro", "au"} {
		if got, ok := g.casinoAbbreviation(sess, input); ok {
			t.Fatalf("baccarat %q unexpectedly abbreviated to %q", input, got)
		}
	}
	if got, ok := g.casinoAbbreviation(sess, "be"); !ok || got != "bet" {
		t.Fatalf("baccarat be resolved to %q (ok=%v), want bet", got, ok)
	}

	// Craps owns roll/autoroll; a blackjack table must not resolve them.
	g2, sess2, _ := casinoCrapsGame(t, "name: Pit\ncasino_tables:\n  - id: cr\n    game: craps\n")
	g2.executePlay(sess2, []string{"craps"}, "play craps")
	if got, ok := g2.casinoAbbreviation(sess2, "ro"); !ok || got != "roll" {
		t.Fatalf("craps ro resolved to %q (ok=%v), want roll", got, ok)
	}
	if got, ok := g2.casinoAbbreviation(sess2, "rol"); !ok || got != "roll" {
		t.Fatalf("craps rol resolved to %q (ok=%v), want roll", got, ok)
	}
	if got, ok := g2.casinoAbbreviation(sess2, "au"); !ok || got != "autoroll" {
		t.Fatalf("craps au resolved to %q (ok=%v), want autoroll", got, ok)
	}
	for _, input := range []string{"sp", "spl", "ins", "su"} {
		if got, ok := g2.casinoAbbreviation(sess2, input); ok {
			t.Fatalf("craps %q unexpectedly abbreviated to %q", input, got)
		}
	}
}

func TestAbbreviatedCasinoCommandReachesQueue(t *testing.T) {
	g, sess, _ := uxCasinoGame(t)
	g.queue = NewCommandQueue()
	g.executePlay(sess, []string{"bj", "10"}, "play bj 10")
	g.handleGameCommand(sess, "b 25")
	qc, ok := g.queue.PeekActive("alice")
	if !ok || qc.Command != "bet" || qc.Args != "25" {
		t.Fatalf("b 25 queued %+v (ok=%v), want bet 25", qc, ok)
	}
}

func TestPlayAliasesJoinGames(t *testing.T) {
	for input, game := range map[string]string{"bj": "blackjack", "black": "blackjack", "bac": "baccarat", "baccarat": "baccarat"} {
		g, sess, conn := uxCasinoGame(t)
		g.executePlay(sess, strings.Fields(input), "play "+input)
		table, ok := g.Casino.Participation("alice")
		if !ok || table == nil || string(table.Config.Game) != game {
			t.Fatalf("play %s: participation=%v game=%q", input, ok, game)
		}
		if !strings.Contains(stripANSI(string(conn.data)), "Available ") {
			t.Fatalf("play %s: missing betting menu, got %q", input, stripANSI(string(conn.data)))
		}
	}
}

func TestPlayAmbiguousAndUnknownListChoices(t *testing.T) {
	g, sess, conn := uxCasinoGame(t)
	_ = g
	for _, input := range []string{"", "b", "zzz"} {
		conn.data = nil
		args := []string{}
		if input != "" {
			args = strings.Fields("play " + input)[1:]
		}
		g.executePlay(sess, args, "play "+input)
		text := stripANSI(string(conn.data))
		if !strings.Contains(text, "play blackjack") || !strings.Contains(text, "play baccarat") {
			t.Fatalf("play %q: expected choice list, got %q", input, text)
		}
	}
}

func TestPlayWithAmountJoinsAndBets(t *testing.T) {
	g, sess, conn := uxCasinoGame(t)
	g.executePlay(sess, []string{"bj", "25"}, "play bj 25")
	if !strings.Contains(stripANSI(string(conn.data)), "You bet 25 credits.") {
		t.Fatalf("missing wager confirmation: %q", stripANSI(string(conn.data)))
	}
}

func TestTableStatusShowsStateAndRules(t *testing.T) {
	g, sess, conn := uxCasinoGame(t)
	g.executePlay(sess, []string{"bj"}, "play bj")
	conn.data = nil
	g.executeTableStatus(sess, nil, "table")
	text := stripANSI(string(conn.data))
	// The table command carries the blackjack felt and nothing else: no
	// balance, seat status, command menu, or rules reminder.
	if !strings.Contains(text, "LIMITS") || !strings.Contains(text, "BLACKJACK PAYS") {
		t.Fatalf("table felt missing: %q", text)
	}
	for _, clutter := range []string{"Available ", "Waiting for bets", "Learn to play", "stop", "rules"} {
		if strings.Contains(text, clutter) {
			t.Fatalf("table showed clutter %q: %q", clutter, text)
		}
	}
}

func TestWatchAndSpectatorDetailFlow(t *testing.T) {
	g, sess, conn := uxCasinoGame(t)
	g.executePlay(sess, []string{"bj", "10"}, "play bj 10")
	// Alice, seated, sees the deal; watch off is still acknowledged.
	if _, seated := g.Casino.Participation("alice"); !seated {
		t.Fatal("alice not seated")
	}
	g.executeWatch(sess, []string{"off"}, "watch off")
	if !strings.Contains(stripANSI(string(conn.data)), "stop watching") {
		t.Fatalf("watch off not confirmed: %q", stripANSI(string(conn.data)))
	}
}

func TestBlackjackShortcutsReachTheTable(t *testing.T) {
	g, sess, conn := uxCasinoGame(t)
	cfg := casino.TableConfig{ID: "blackjack", Game: casino.GameBlackjack, MinBet: 1, MaxBet: 100, Blackjack: casino.BlackjackConfig{ActionTicks: 3}}
	g.Casino.Join(1, cfg, "alice")
	// Rounds deal instantly with a lone bettor; dealer aces and naturals vary
	// by seed, so repeat short rounds until a hit actually lands.
	hit := false
	for round := 0; round < 12 && !hit; round++ {
		g.executeBet(sess, nil, "rebet")
		g.executeTableAction(sess, "decline")
		for attempt := 0; attempt < 3 && !hit; attempt++ {
			g.executeTableAction(sess, "h")
			hit = strings.Contains(stripANSI(string(conn.data)), "You hit")
		}
		g.executeTableAction(sess, "st")
	}
	if _, seated := g.Casino.Participation("alice"); !seated {
		t.Fatal("shortcut actions should never remove the seat")
	}
	if !hit {
		t.Fatalf("shortcuts did not hit: %q", stripANSI(string(conn.data)))
	}
}

func TestRebetRepeatsWager(t *testing.T) {
	g, sess, conn := uxCasinoGame(t)
	cfg := casino.TableConfig{ID: "bac", Game: casino.GameBaccarat, MinBet: 5, MaxBet: 100}
	g.Casino.Join(1, cfg, "alice")
	g.Casino.Bet(1, "bac", "alice", "banker", 20, casinoWallet{g: g, p: sess.Player})
	conn.data = nil
	// The first round deals and settles instantly with a single bettor, so a
	// fresh betting window opens; rebet should repeat 20 on banker.
	g.executeBet(sess, nil, "rebet")
	if !strings.Contains(stripANSI(string(conn.data)), "on banker") {
		t.Fatalf("rebet did not target banker: %q", stripANSI(string(conn.data)))
	}
}

// TestCasinoTimeTextUsesTicks pins the presentation unit: authored "N ticks"
// deadlines display as "Nt" rather than being rewritten into seconds.
func TestCasinoTimeTextUsesTicks(t *testing.T) {
	g := &Game{}
	for in, want := range map[string]string{
		"Your turn | 25 ticks remaining": "Your turn | 25t remaining",
		"Betting closes in 5 ticks.":     "Betting closes in 5t.",
		"no deadline here":               "no deadline here",
	} {
		if got := g.casinoTimeText(in); got != want {
			t.Fatalf("casinoTimeText(%q) = %q, want %q", in, got, want)
		}
	}
}