package pages

import (
	"fmt"

	"github.com/ryanhamamura/c4/features/common/components"
	"github.com/ryanhamamura/c4/features/common/layouts"
	snakecomponents "github.com/ryanhamamura/c4/features/snakegame/components"
	"github.com/ryanhamamura/c4/snake"
	"github.com/starfederation/datastar-go/datastar"
)

// keydownScript builds the inline JS for a single data-on:keydown handler
// that dispatches WASD/arrow keys to direction POST endpoints.
func keydownScript(gameID string) string {
	return fmt.Sprintf(
		"const k=evt.key;"+
			"if(k==='w'||k==='ArrowUp'){evt.preventDefault();%s}"+
			"else if(k==='s'||k==='ArrowDown'){evt.preventDefault();%s}"+
			"else if(k==='a'||k==='ArrowLeft'){evt.preventDefault();%s}"+
			"else if(k==='d'||k==='ArrowRight'){evt.preventDefault();%s}",
		datastar.PostSSE("/snake/%s/dir?d=0", gameID),
		datastar.PostSSE("/snake/%s/dir?d=1", gameID),
		datastar.PostSSE("/snake/%s/dir?d=2", gameID),
		datastar.PostSSE("/snake/%s/dir?d=3", gameID),
	)
}

templ GamePage(sg *snake.SnakeGame, mySlot int, messages []snakecomponents.ChatMessage, gameID string) {
	@layouts.Base("Snake") {
		<main
			class="snake-wrapper flex flex-col items-center gap-4 p-4"
			data-signals={ `{"chatMsg":""}` }
			data-init={ datastar.GetSSE("/snake/%s/events", gameID) }
			data-on:keydown.throttle_100ms={ keydownScript(gameID) }
			tabindex="0"
		>
			@components.BackToLobby()
			<h1 class="text-3xl font-bold">~~~~</h1>
			@snakecomponents.PlayerList(sg, mySlot)
			@snakecomponents.StatusBanner(sg, mySlot, gameID)
			if sg.Status == snake.StatusInProgress || sg.Status == snake.StatusFinished {
				if sg.Mode == snake.ModeMultiplayer {
					<div class="snake-game-area">
						@snakecomponents.Board(sg)
						@snakecomponents.Chat(messages, gameID)
					</div>
				} else {
					@snakecomponents.Board(sg)
				}
			} else if sg.Mode == snake.ModeMultiplayer {
				@snakecomponents.Chat(messages, gameID)
			}
			if sg.Mode == snake.ModeMultiplayer && (sg.Status == snake.StatusWaitingForPlayers || sg.Status == snake.StatusCountdown) {
				@snakecomponents.InviteLink(gameID)
			}
		</main>
	}
}

templ JoinPage(gameID string) {
	@layouts.Base("Snake - Join") {
		@components.GameJoinPrompt(
			fmt.Sprintf("/login?return_url=/snake/%s", gameID),
			fmt.Sprintf("/register?return_url=/snake/%s", gameID),
			fmt.Sprintf("/snake/%s", gameID),
		)
	}
}

templ NicknamePage(gameID string) {
	@layouts.Base("Snake - Join") {
		@components.NicknamePrompt(fmt.Sprintf("/snake/%s/join", gameID))
	}
}