import { Controller, OnStart } from "@flamework/core";
import Log from "@rbxts/log";
import { TextChatService } from "@rbxts/services";
import { WELCOME_CHAT, WELCOME_CHAT_MESSAGE } from "shared/welcome-chat";

@Controller()
export class WelcomeChatController implements OnStart {
  public onStart(): void {
    task.delay(WELCOME_CHAT.delaySeconds, () => this.displayWelcome());
  }

  private displayWelcome(): void {
    const deadline = os.clock() + WELCOME_CHAT.channelTimeoutSeconds;
    const channels = TextChatService.WaitForChild(
      "TextChannels",
      WELCOME_CHAT.channelTimeoutSeconds,
    );
    const channel = channels?.WaitForChild("RBXGeneral", math.max(deadline - os.clock(), 0));

    if (!channel?.IsA("TextChannel")) {
      Log.Warn("Welcome chat unavailable: RBXGeneral did not become ready before the timeout");
      return;
    }

    channel.DisplaySystemMessage(WELCOME_CHAT_MESSAGE);
  }
}