package web

import (
	"encoding/json"
	"fmt"
	"io/fs"
	"net"
	"net/http"
	"os"
	"testing"
	"time"
)

// TestDevCasino is not a test. It is the casino, running, on a port, with one
// signed-in player who has chips — so the table can be driven in a real browser,
// which is the only honest way to review an animation.
//
// Skipped unless you ask for it:
//
//	PETE_DEV_CASINO=:7788 go test ./internal/web -run TestDevCasino -timeout 0
//
// It prints the session cookie to plant. The routes are wired here rather than
// taken from New(), because New() decides whether the casino exists at the
// moment it builds the mux, and the test rig only signs the player in afterwards.
func TestDevCasino(t *testing.T) {
	addr := os.Getenv("PETE_DEV_CASINO")
	if addr == "" {
		t.Skip("set PETE_DEV_CASINO=:port to run the casino for a browser")
	}

	s := newCasino(t)
	fund(t, 5000)

	payload, _ := json.Marshal(SessionUser{
		Sub: "sub-1", Username: "reala", Name: "Reala",
		Exp: time.Now().Add(24 * time.Hour).Unix(),
	})
	cookie := s.auth.sign(payload)

	staticSub, err := fs.Sub(staticFS, "static")
	if err != nil {
		t.Fatal(err)
	}

	mux := http.NewServeMux()
	mux.Handle("GET /static/", http.StripPrefix("/static/", http.FileServer(http.FS(staticSub))))
	mux.HandleFunc("GET /games", s.handleLobby)
	mux.HandleFunc("GET /games/blackjack", s.handleBlackjack)
	mux.HandleFunc("GET /api/games/table", s.handleTable)
	mux.HandleFunc("POST /api/games/buyin", s.handleBuyIn)
	mux.HandleFunc("POST /api/games/cashout", s.handleCashOut)
	mux.HandleFunc("POST /api/games/blackjack/deal", s.handleDeal)
	mux.HandleFunc("POST /api/games/blackjack/move", s.handleMove)

	ln, err := net.Listen("tcp", addr)
	if err != nil {
		t.Fatal(err)
	}
	// Written to a file, not printed: `go test` buffers stdout, and the browser
	// driver needs the cookie while the server is still running.
	if out := os.Getenv("PETE_DEV_COOKIE_FILE"); out != "" {
		if err := os.WriteFile(out, []byte(cookie), 0o600); err != nil {
			t.Fatal(err)
		}
	}
	fmt.Printf("\nCASINO  http://localhost%s/games/blackjack\nCOOKIE  %s=%s\n\n", addr, sessionCookie, cookie)

	srv := &http.Server{Handler: mux, ReadHeaderTimeout: 5 * time.Second}
	t.Cleanup(func() { _ = srv.Close() })
	_ = srv.Serve(ln)
}