/**
 * Settings Panel Module
 * Manages the extension settings tab in SillyTavern's Extensions panel.
 * Extracted from index.js to reduce main entry point size.
 */

import { extensionSettings } from './state.js';
import { saveSettings } from './persistence.js';
import { extensionName } from './config.js';
import { i18n } from './i18n.js';

/**
 * Adds the extension settings to the Extensions tab.
 * @param {Function} $ - jQuery function
 * @param {Function} renderExtensionTemplateAsync - SillyTavern template renderer
 * @param {Function} clearExtensionPrompts - Clear extension prompts from SillyTavern
 * @param {Function} updateChatThoughts - Update thought bubbles in chat
 * @param {Function} cleanupCheckpointUI - Remove checkpoint UI elements
 * @param {Function} clearThoughtBasedExpressionsCache - Clear expression cache
 * @param {Function} toggleDynamicWeather - Toggle weather effects
 * @param {Function} initUI - Initialize the main UI panel
 * @param {Function} loadChatData - Load chat-specific data
 * @param {Function} scheduleChatStateRehydration - Schedule chat state rehydration
 * @param {Function} initThoughtBasedExpressions - Initialize thought-based expressions
 * @param {Function} injectCheckpointButton - Add checkpoint buttons
 * @param {Function} updateAllCheckpointIndicators - Update checkpoint button states
 * @param {Function} removeAlternatePresentCharactersPanel - Remove alt characters panel
 * @param {Function} registerExtensionEvents - (Re)register all SillyTavern event handlers
 * @param {Function} unregisterAllEvents - Unregister all tracked SillyTavern event handlers
 * @param {Function} initHistoryInjection - (Re)register history injection listeners
 */
export async function addExtensionSettings($, renderExtensionTemplateAsync, clearExtensionPrompts, updateChatThoughts, cleanupCheckpointUI, clearThoughtBasedExpressionsCache, toggleDynamicWeather, initUI, loadChatData, scheduleChatStateRehydration, initThoughtBasedExpressions, injectCheckpointButton, updateAllCheckpointIndicators, removeAlternatePresentCharactersPanel, registerExtensionEvents, unregisterAllEvents, initHistoryInjection) {
    const settingsHtml = await renderExtensionTemplateAsync(extensionName, 'settings');
    $('#extensions_settings2').append(settingsHtml);

    // Enable/disable toggle
    $('#rpg-extension-enabled').prop('checked', extensionSettings.enabled).on('change', async function() {
        const wasEnabled = extensionSettings.enabled;
        extensionSettings.enabled = $(this).prop('checked');
        saveSettings();

        if (!extensionSettings.enabled && wasEnabled) {
            clearExtensionPrompts();
            updateChatThoughts();
            cleanupCheckpointUI();
            clearThoughtBasedExpressionsCache();
            toggleDynamicWeather(false);

            // Unregister all tracked event handlers to avoid leaks while disabled
            unregisterAllEvents();

            $('#rpg-companion-panel').remove();
            $('#rpg-mobile-toggle').remove();
            $('#rpg-collapse-toggle').remove();
            $('#rpg-plot-buttons').remove();
            removeAlternatePresentCharactersPanel();
        } else if (extensionSettings.enabled && !wasEnabled) {
            // Re-register event handlers that were unregistered on disable
            registerExtensionEvents();
            initHistoryInjection();
            await initUI();
            loadChatData();
            scheduleChatStateRehydration();
            initThoughtBasedExpressions();
            updateChatThoughts();
            injectCheckpointButton();
            updateAllCheckpointIndicators();
        }
    });

    // Language selector
    const langSelect = $('#rpg-companion-language-select');
    if (langSelect.length) {
        langSelect.val(i18n.currentLanguage);
        langSelect.on('change', async function() {
            const selectedLanguage = $(this).val();
            await i18n.setLanguage(selectedLanguage);
            i18n.applyTranslations(document.getElementById('extensions_settings2'));
        });
    }
}