// app/static/js/auth.js - 认证相关逻辑

import { AUTH_TOKEN_STORAGE_KEY } from './constants.js';

/**
 * 处理登录表单提交。
 * @param {HTMLFormElement} loginForm - 登录表单元素。
 * @param {HTMLInputElement} authTokenInput - 认证令牌输入框。
 * @param {HTMLElement} errorMessage - 错误消息显示元素。
 */
export function setupLoginForm(loginForm, authTokenInput, errorMessage) {
    if (loginForm) {
        loginForm.addEventListener('submit', async (e) => {
            e.preventDefault();
            const authToken = authTokenInput.value.trim();

            if (!authToken) {
                errorMessage.textContent = '认证令牌不能为空。';
                return;
            }

            localStorage.setItem(AUTH_TOKEN_STORAGE_KEY, authToken);

            try {
                const response = await fetch('/v1/health', {
                    headers: {
                        'X-Auth-Token': authToken
                    }
                });

                if (response.ok) {
                    // 登录成功，重定向到主页面
                    window.location.href = '/static/index.html';
                } else {
                    const errorData = await response.json();
                    errorMessage.textContent = `登录失败: ${errorData.detail || response.statusText}`;
                    localStorage.removeItem(AUTH_TOKEN_STORAGE_KEY);
                }
            } catch (error) {
                errorMessage.textContent = `登录请求出错: ${error.message}`;
                localStorage.removeItem(AUTH_TOKEN_STORAGE_KEY);
            }
        });
    }
}

/**
 * 设置登出按钮事件。
 * @param {HTMLButtonElement} logoutButton - 登出按钮元素。
 */
export function setupLogoutButton(logoutButton) {
    if (logoutButton) {
        logoutButton.addEventListener('click', () => {
            localStorage.removeItem(AUTH_TOKEN_STORAGE_KEY);
            window.location.href = '/static/login.html';
        });
    }
}

/**
 * 检查认证状态并重定向。
 */
export function checkAuthAndRedirect() {
    const storedAuthToken = localStorage.getItem(AUTH_TOKEN_STORAGE_KEY);

    if (storedAuthToken) {
        if (window.location.pathname === '/static/login.html') {
            window.location.href = '/static/index.html';
        }
    } else {
        if (window.location.pathname !== '/static/login.html') {
            window.location.href = '/static/login.html';
        }
    }
}