const AUTH_TOKEN_KEY = "scud_api_auth_token";
const SESSION_ID = "web_session_main";
const STORAGE_KEY = "scud_chat_input_history";

let API_TOKEN = localStorage.getItem(AUTH_TOKEN_KEY) || "";
let CURRENT_USERNAME = localStorage.getItem("scud_username") || "";
let IS_ADMIN = localStorage.getItem("scud_is_admin") === "true";
let IS_GUEST = localStorage.getItem("scud_is_guest") === "true";

let inputHistory = JSON.parse(localStorage.getItem(STORAGE_KEY) || "[]");
let historyIndex = -1;

document.addEventListener("DOMContentLoaded", () => {
    const userInputEl = document.getElementById("user-input");

    if (userInputEl) {
        userInputEl.addEventListener("input", function() {
            this.style.height = "auto";
            this.style.height = Math.min(this.scrollHeight, 80) + "px";
        });

        userInputEl.addEventListener("keydown", function(e) {
            // Отправка по Enter
            if (e.key === "Enter" && !e.shiftKey) {
                e.preventDefault();
                
                const val = this.value.trim();
                if (val) {
                    // Сохраняем команду в историю
                    if (inputHistory.length === 0 || inputHistory[inputHistory.length - 1] !== val) {
                        inputHistory.push(val);
                        if (inputHistory.length > 50) inputHistory.shift();
                        localStorage.setItem(STORAGE_KEY, JSON.stringify(inputHistory));
                    }
                    historyIndex = -1;
                }

                if (typeof sendMessage === "function") {
                    sendMessage(e);
                }
            }
            // История: стрелка ВВЕРХ
            else if (e.key === "ArrowUp") {
                if (inputHistory.length > 0 && historyIndex < inputHistory.length - 1) {
                    e.preventDefault();
                    if (historyIndex === -1) {
                        this.dataset.draft = this.value;
                    }
                    historyIndex++;
                    this.value = inputHistory[inputHistory.length - 1 - historyIndex];
                    this.dispatchEvent(new Event("input"));
                    setTimeout(() => this.setSelectionRange(this.value.length, this.value.length), 0);
                }
            }
            // История: стрелка ВНИЗ
            else if (e.key === "ArrowDown") {
                if (historyIndex !== -1) {
                    e.preventDefault();
                    if (historyIndex > 0) {
                        historyIndex--;
                        this.value = inputHistory[inputHistory.length - 1 - historyIndex];
                    } else {
                        historyIndex = -1;
                        this.value = this.dataset.draft || "";
                    }
                    this.dispatchEvent(new Event("input"));
                    setTimeout(() => this.setSelectionRange(this.value.length, this.value.length), 0);
                }
            }
        });
    }

    if (IS_GUEST) {
        hideAuthModal();
        updateUIState();
    } else if (API_TOKEN) {
        hideAuthModal();
        updateUIState();
        if (typeof loadTasks === "function") {
            loadTasks();
        }
    } else {
        showAuthModal();
    }
});