// js/caddy.js - Caddy 实例状态管理与控制

import { api } from './api.js';
import { notification } from './notifications.js';

let caddyStatusInterval;
const POLLING_INTERVAL = 5000;

const DOMElements = {
    caddyStatusIndicator: document.getElementById('caddy-status-indicator'),
    caddyActionButtonContainer: document.getElementById('caddy-action-button-container'),
};

function createButton(text, className, onClick) {
    const button = document.createElement('button');
    button.className = `btn ${className}`;
    button.innerHTML = `<span>${text}</span>`;
    button.addEventListener('click', onClick);
    return button;
}

function updateCaddyStatusView(status) {
    const dot = DOMElements.caddyStatusIndicator.querySelector('.status-dot');
    const text = DOMElements.caddyStatusIndicator.querySelector('.status-text');
    const buttonContainer = DOMElements.caddyActionButtonContainer;
    
    if(!dot || !text || !buttonContainer) return; // 如果元素不存在,则不执行

    dot.className = 'status-dot';
    buttonContainer.innerHTML = '';
    let statusText, dotClass;
    switch (status) {
        case 'running':
            statusText = '运行中'; dotClass = 'running';
            buttonContainer.appendChild(createButton('重载配置', 'btn-warning', handleReloadCaddy));
            buttonContainer.appendChild(createButton('停止 Caddy', 'btn-danger', handleStopCaddy));
            break;
        case 'stopped':
            statusText = '已停止'; dotClass = 'stopped';
            buttonContainer.appendChild(createButton('启动 Caddy', 'btn-success', handleStartCaddy));
            break;
        case 'checking': statusText = '检查中...'; dotClass = 'checking'; break;
        default: statusText = '状态未知'; dotClass = 'error'; break;
    }
    text.textContent = statusText;
    dot.classList.add(dotClass);
}

async function checkCaddyStatus() {
    try {
        const response = await api.get('/caddy/status');
        updateCaddyStatusView(response.message === 'Caddy is running' ? 'running' : 'stopped');
    } catch (error) { 
        console.error('Error checking Caddy status:', error); 
        updateCaddyStatusView('error');
    }
}

async function handleStartCaddy() {
    try {
        const result = await api.post('/caddy/run');
        notification.toast(result.message || '启动命令已发送。', 'success');
        setTimeout(checkCaddyStatus, 500);
    } catch (error) { notification.toast(`启动失败: ${error.message}`, 'error'); }
}

async function handleStopCaddy() {
    if (!await notification.confirm('您确定要停止 Caddy 实例吗?')) return;
    try {
        const result = await api.post('/caddy/stop');
        notification.toast(result.message || '停止命令已发送。', 'info');
        setTimeout(checkCaddyStatus, 500);
    } catch(error) { notification.toast(`操作失败: ${error.message}`, 'error'); }
}

async function handleReloadCaddy() {
    if (!await notification.confirm('确定要重载 Caddy 配置吗?')) return;
    try {
        const result = await api.post('/caddy/restart');
        notification.toast(result.message || '重载命令已发送。', 'success');
        setTimeout(checkCaddyStatus, 500);
    } catch(error) { notification.toast(`重载失败: ${error.message}`, 'error'); }
}

export function initCaddyStatus() {
    // 确保通知模块已经初始化
    const dialogContainer = document.getElementById('dialog-container');
    const toastContainer = document.getElementById('toast-container');
    if (dialogContainer && toastContainer) {
        notification.init(toastContainer, dialogContainer);
    }
    
    checkCaddyStatus();
    if (caddyStatusInterval) {
        clearInterval(caddyStatusInterval);
    }
    caddyStatusInterval = setInterval(checkCaddyStatus, POLLING_INTERVAL);
}