package web

import (
	"net/http"

	"pete/internal/games/blackjack"
	"pete/internal/storage"
)

// The casino's two pages. Both require a signed-in visitor — there is money in
// here, and a player has to be somebody gogobee's ledger can name.
//
// Neither page renders any game state server-side. The felt is drawn by the
// browser from /api/games/table, because a hand is a thing that *happens*: cards
// are dealt one at a time and the table plays that back. A server-rendered hand
// would arrive fully formed, which is the one thing a card table must never do.

// gameTeaser is a table that isn't open yet. They're on the lobby because an
// empty casino with one game reads as broken, and this reads as early.
type gameTeaser struct {
	Name  string
	Emoji string
	Blurb string
}

var comingSoon = []gameTeaser{
	{Name: "Hold'em", Emoji: "♠️", Blurb: "Six seats, and Pete's bots know how to play."},
	{Name: "UNO", Emoji: "🎴", Blurb: "Normal rules, or no mercy."},
	{Name: "Trivia", Emoji: "🧠", Blurb: "Faster answers score higher."},
	{Name: "Hangman", Emoji: "🪢", Blurb: "Guess the phrase before Pete finishes drawing."},
}

// betDenominations are the chips you build a bet out of.
var betDenominations = []int64{5, 25, 100, 500}

type gamesPage struct {
	pageData
	Cap           int64
	RakePct       int
	Soon          []gameTeaser
	Denominations []int64
}

// requirePlayer sends an anonymous visitor to sign in and comes back here after.
// Anyone who is signed in but carries a session from before the casino existed
// has no username in it, so they get sent through sign-in too — which mints one.
func (s *Server) requirePlayer(w http.ResponseWriter, r *http.Request) bool {
	if !s.gamesReady() {
		http.NotFound(w, r)
		return false
	}
	u := s.auth.userFromRequest(r)
	if u != nil && u.MatrixUser(s.cfg.Games.MatrixServer) != "" {
		return true
	}
	http.Redirect(w, r, "/auth/login?next="+r.URL.Path, http.StatusFound)
	return false
}

func (s *Server) gamesPage(r *http.Request) gamesPage {
	base := s.base(r)
	base.NoIndex = true // the casino is for players, not for search engines
	return gamesPage{
		pageData:      base,
		Cap:           storage.MaxChipsOnTable,
		RakePct:       int(blackjack.DefaultRules().RakePct * 100),
		Soon:          comingSoon,
		Denominations: betDenominations,
	}
}

func (s *Server) handleLobby(w http.ResponseWriter, r *http.Request) {
	if !s.requirePlayer(w, r) {
		return
	}
	s.render(w, "games", s.gamesPage(r))
}

func (s *Server) handleBlackjack(w http.ResponseWriter, r *http.Request) {
	if !s.requirePlayer(w, r) {
		return
	}
	s.render(w, "blackjack", s.gamesPage(r))
}