import { useState, useEffect } from "react";
import { PRODUCT_NAME, API_BASE_URL } from "../../../../../core/config";
import type { DialogProps } from "../../../../../core/types";
import { MaterialDialog } from "../core/Dialog";
import { initialize, isSupported, startElectronReceiver, stopElectronReceiver, subscribe, unsubscribe } from "../../../../../core/push-notifications/push-notifications";
import { isElectron } from "../../../../../core/electron/electron";
import { useAppState } from "../../state";
import type { Switch } from "mdui/components/switch";
import { getAuthHeaders } from "../../../../../core/api/authApi";

export function SettingsDialog({ isOpen, onOpenChange }: DialogProps) {
    const [activePanel, setActivePanel] = useState("notifications-settings");
    const [pushNotificationsEnabled, setPushNotificationsEnabled] = useState(false);
    const [pushSupported, setPushSupported] = useState(false);
    const user = useAppState(state => state.user);

    useEffect(() => {
        setPushSupported(isSupported());
        // For Electron, we assume notifications are enabled if supported
        // For web browsers, we check if there's a subscription
        setPushNotificationsEnabled(isSupported());
    }, []);

    const handlePanelChange = (panelId: string) => {
        setActivePanel(panelId);
    };

    const handlePushNotificationToggle = async (enabled: boolean) => {
        if (!user.authToken) return;

        try {
            if (enabled) {
                const initialized = await initialize();
                if (initialized) {
                    await subscribe(user.authToken);
                    
                    // For Electron, start the notification receiver
                    if (isElectron) {
                        await startElectronReceiver();
                    }
                    
                    setPushNotificationsEnabled(true);
                }
            } else {
                await unsubscribe();
                
                // For Electron, stop the notification receiver
                if (isElectron) {
                    stopElectronReceiver();
                }
                
                // Call API to unsubscribe on server (for web browsers)
                await fetch(`${API_BASE_URL}/push/unsubscribe`, {
                    method: "DELETE",
                    headers: getAuthHeaders(user.authToken)
                });
                setPushNotificationsEnabled(false);
            }
        } catch (error) {
            console.error("Failed to toggle notifications:", error);
        }
    };

    return (
        <MaterialDialog close-on-overlay-click close-on-esc fullscreen open={isOpen} onOpenChange={onOpenChange} id="settings-dialog">
            <div className="fullscreen-wrapper">
                <div id="settings-dialog-inner">
                    <div className="header">
                        <mdui-button-icon icon="close" id="settings-close" onClick={() => onOpenChange(false)}></mdui-button-icon>
                        <mdui-top-app-bar-title>Настройки</mdui-top-app-bar-title>
                    </div>
                    <div id="settings-menu">
                        <mdui-list>
                            <mdui-list-item 
                                icon="notifications--filled" 
                                rounded 
                                active={activePanel === "notifications-settings"}
                                onClick={() => handlePanelChange("notifications-settings")}
                                style={{ cursor: "pointer" }}
                            >
                                Уведомления
                            </mdui-list-item>
                            <mdui-list-item 
                                icon="palette--filled" 
                                rounded 
                                active={activePanel === "appearance-settings"}
                                onClick={() => handlePanelChange("appearance-settings")}
                                style={{ cursor: "pointer" }}
                            >
                                Внешний вид
                            </mdui-list-item>
                            <mdui-list-item 
                                icon="security--filled" 
                                rounded 
                                active={activePanel === "security-settings"}
                                onClick={() => handlePanelChange("security-settings")}
                                style={{ cursor: "pointer" }}
                            >
                                Безопасность
                            </mdui-list-item>
                            <mdui-list-item 
                                icon="language--filled" 
                                rounded 
                                active={activePanel === "language-settings"}
                                onClick={() => handlePanelChange("language-settings")}
                                style={{ cursor: "pointer" }}
                            >
                                Язык
                            </mdui-list-item>
                            <mdui-list-item 
                                icon="storage--filled" 
                                rounded 
                                active={activePanel === "storage-settings"}
                                onClick={() => handlePanelChange("storage-settings")}
                                style={{ cursor: "pointer" }}
                            >
                                Хранилище
                            </mdui-list-item>
                            <mdui-list-item 
                                icon="help--filled" 
                                rounded 
                                active={activePanel === "help-settings"}
                                onClick={() => handlePanelChange("help-settings")}
                                style={{ cursor: "pointer" }}
                            >
                                Помощь
                            </mdui-list-item>
                            <mdui-list-item 
                                icon="info--filled" 
                                rounded 
                                active={activePanel === "about-settings"}
                                onClick={() => handlePanelChange("about-settings")}
                                style={{ cursor: "pointer" }}
                            >
                                О приложении
                            </mdui-list-item>
                        </mdui-list>
                        <div className="screen">
                            <div id="notifications-settings" className={`settings-panel ${activePanel === "notifications-settings" ? "active" : ""}`}>
                                <h3>Уведомления</h3>
                                {pushSupported && (
                                    <mdui-switch 
                                        checked={pushNotificationsEnabled}
                                        onInput={(e) => handlePushNotificationToggle((e.target as Switch).checked)}
                                    >
                                        Push уведомления
                                    </mdui-switch>
                                )}
                                <mdui-switch checked>Новые сообщения</mdui-switch>
                                <mdui-switch checked>Звуковые уведомления</mdui-switch>
                                <mdui-switch>Уведомления о статусе</mdui-switch>
                                <mdui-switch checked>Email уведомления</mdui-switch>
                            </div>
                            
                            <div id="appearance-settings" className={`settings-panel ${activePanel === "appearance-settings" ? "active" : ""}`}>
                                <h3>Внешний вид</h3>
                                <mdui-select label="Тема" variant="outlined">
                                    <mdui-menu-item value="dark">Тёмная</mdui-menu-item>
                                    <mdui-menu-item value="light">Светлая</mdui-menu-item>
                                    <mdui-menu-item value="auto">Авто</mdui-menu-item>
                                </mdui-select>
                                <mdui-select label="Размер шрифта" variant="outlined">
                                    <mdui-menu-item value="small">Маленький</mdui-menu-item>
                                    <mdui-menu-item value="medium">Средний</mdui-menu-item>
                                    <mdui-menu-item value="large">Большой</mdui-menu-item>
                                </mdui-select>
                            </div>
                            
                            <div id="security-settings" className={`settings-panel ${activePanel === "security-settings" ? "active" : ""}`}>
                                <h3>Безопасность</h3>
                                <mdui-button variant="outlined">Изменить пароль</mdui-button>
                                <mdui-button variant="outlined">Двухфакторная аутентификация</mdui-button>
                                <mdui-switch>Автоматический выход</mdui-switch>
                            </div>
                            
                            <div id="language-settings" className={`settings-panel ${activePanel === "language-settings" ? "active" : ""}`}>
                                <h3>Язык</h3>
                                <mdui-select label="Выберите язык" variant="outlined">
                                    <mdui-menu-item value="ru">Русский</mdui-menu-item>
                                    <mdui-menu-item value="en">English</mdui-menu-item>
                                    <mdui-menu-item value="es">Español</mdui-menu-item>
                                </mdui-select>
                            </div>
                            
                            <div id="storage-settings" className={`settings-panel ${activePanel === "storage-settings" ? "active" : ""}`}>
                                <h3>Хранилище</h3>
                                <p>Использовано: 2.5 ГБ из 10 ГБ</p>
                                <mdui-linear-progress value={25}></mdui-linear-progress>
                                <mdui-button variant="outlined">Очистить кэш</mdui-button>
                            </div>
                            
                            <div id="help-settings" className={`settings-panel ${activePanel === "help-settings" ? "active" : ""}`}>
                                <h3>Помощь</h3>
                                <mdui-button variant="outlined">Руководство пользователя</mdui-button>
                                <mdui-button variant="outlined">Связаться с поддержкой</mdui-button>
                                <mdui-button variant="outlined">FAQ</mdui-button>
                            </div>
                            
                            <div id="about-settings" className={`settings-panel ${activePanel === "about-settings" ? "active" : ""}`}>
                                <h3>О приложении</h3>
                                <p>Версия: 1.0.0</p>
                                <p>© 2025 <span className="product-name">{PRODUCT_NAME}</span>. Все права защищены.</p>
                                <mdui-button variant="outlined">Политика конфиденциальности</mdui-button>
                                <mdui-button variant="outlined">Условия использования</mdui-button>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </MaterialDialog>
    );
}