feat(antigravity): implement Antigravity OAuth integration with UI elements and functionality

app.js

@@ -221,6 +221,7 @@ class CLIProxyManager {
                 const cardText = card.textContent || '';
                 if (cardText.includes('Codex OAuth') ||
                     cardText.includes('Anthropic OAuth') ||
+                    cardText.includes('Antigravity OAuth') ||
                     cardText.includes('Gemini CLI OAuth') ||
                     cardText.includes('Qwen OAuth') ||
                     cardText.includes('iFlow OAuth')) {
@@ -430,6 +431,21 @@ class CLIProxyManager {
             anthropicCopyLink.addEventListener('click', () => this.copyAnthropicLink());
         }
 
+        // Antigravity OAuth
+        const antigravityOauthBtn = document.getElementById('antigravity-oauth-btn');
+        const antigravityOpenLink = document.getElementById('antigravity-open-link');
+        const antigravityCopyLink = document.getElementById('antigravity-copy-link');
+
+        if (antigravityOauthBtn) {
+            antigravityOauthBtn.addEventListener('click', () => this.startAntigravityOAuth());
+        }
+        if (antigravityOpenLink) {
+            antigravityOpenLink.addEventListener('click', () => this.openAntigravityLink());
+        }
+        if (antigravityCopyLink) {
+            antigravityCopyLink.addEventListener('click', () => this.copyAntigravityLink());
+        }
+
         // Gemini CLI OAuth
         const geminiCliOauthBtn = document.getElementById('gemini-cli-oauth-btn');
         const geminiCliOpenLink = document.getElementById('gemini-cli-open-link');

i18n.js

@@ -333,6 +333,19 @@ const i18n = {
             'auth_login.anthropic_oauth_start_error': '启动 Anthropic OAuth 失败:',
             'auth_login.anthropic_oauth_polling_error': '检查认证状态失败:',
 
+            // Antigravity OAuth
+            'auth_login.antigravity_oauth_title': 'Antigravity OAuth',
+            'auth_login.antigravity_oauth_button': '开始 Antigravity 登录',
+            'auth_login.antigravity_oauth_hint': '通过 OAuth 流程登录 Antigravity（Google 账号）服务，自动获取并保存认证文件。',
+            'auth_login.antigravity_oauth_url_label': '授权链接:',
+            'auth_login.antigravity_open_link': '打开链接',
+            'auth_login.antigravity_copy_link': '复制链接',
+            'auth_login.antigravity_oauth_status_waiting': '等待认证中...',
+            'auth_login.antigravity_oauth_status_success': '认证成功！',
+            'auth_login.antigravity_oauth_status_error': '认证失败:',
+            'auth_login.antigravity_oauth_start_error': '启动 Antigravity OAuth 失败:',
+            'auth_login.antigravity_oauth_polling_error': '检查认证状态失败:',
+
             // Gemini CLI OAuth
             'auth_login.gemini_cli_oauth_title': 'Gemini CLI OAuth',
             'auth_login.gemini_cli_oauth_button': '开始 Gemini CLI 登录',
@@ -854,6 +867,19 @@ const i18n = {
             'auth_login.anthropic_oauth_start_error': 'Failed to start Anthropic OAuth:',
             'auth_login.anthropic_oauth_polling_error': 'Failed to check authentication status:',
 
+            // Antigravity OAuth
+            'auth_login.antigravity_oauth_title': 'Antigravity OAuth',
+            'auth_login.antigravity_oauth_button': 'Start Antigravity Login',
+            'auth_login.antigravity_oauth_hint': 'Login to Antigravity service (Google account) through OAuth flow, automatically obtain and save authentication files.',
+            'auth_login.antigravity_oauth_url_label': 'Authorization URL:',
+            'auth_login.antigravity_open_link': 'Open Link',
+            'auth_login.antigravity_copy_link': 'Copy Link',
+            'auth_login.antigravity_oauth_status_waiting': 'Waiting for authentication...',
+            'auth_login.antigravity_oauth_status_success': 'Authentication successful!',
+            'auth_login.antigravity_oauth_status_error': 'Authentication failed:',
+            'auth_login.antigravity_oauth_start_error': 'Failed to start Antigravity OAuth:',
+            'auth_login.antigravity_oauth_polling_error': 'Failed to check authentication status:',
+
             // Gemini CLI OAuth
             'auth_login.gemini_cli_oauth_title': 'Gemini CLI OAuth',
             'auth_login.gemini_cli_oauth_button': 'Start Gemini CLI Login',

index.html

@@ -628,6 +628,42 @@
                                 </div>
                             </div>
 
+                            <!-- Antigravity OAuth -->
+                            <div class="card" id="antigravity-oauth-card">
+                                <div class="card-header">
+                                    <h3><i class="fas fa-rocket"></i> <span
+                                            data-i18n="auth_login.antigravity_oauth_title">Antigravity OAuth</span></h3>
+                                    <button id="antigravity-oauth-btn" class="btn btn-primary">
+                                        <i class="fas fa-sign-in-alt"></i> <span
+                                            data-i18n="auth_login.antigravity_oauth_button">开始 Antigravity 登录</span>
+                                    </button>
+                                </div>
+                                <div class="card-content">
+                                    <p class="form-hint" style="margin-bottom: 20px;"
+                                        data-i18n="auth_login.antigravity_oauth_hint">
+                                        通过 OAuth 流程登录 Antigravity（Google 账号）服务，自动获取并保存认证文件。
+                                    </p>
+                                    <div id="antigravity-oauth-content" style="display: none;">
+                                        <div class="form-group">
+                                            <label data-i18n="auth_login.antigravity_oauth_url_label">授权链接:</label>
+                                            <div class="input-group">
+                                                <input type="text" id="antigravity-oauth-url" readonly>
+                                                <button id="antigravity-open-link" class="btn btn-primary">
+                                                    <i class="fas fa-external-link-alt"></i> <span
+                                                        data-i18n="auth_login.antigravity_open_link">打开链接</span>
+                                                </button>
+                                                <button id="antigravity-copy-link" class="btn btn-secondary">
+                                                    <i class="fas fa-copy"></i> <span
+                                                        data-i18n="auth_login.antigravity_copy_link">复制链接</span>
+                                                </button>
+                                            </div>
+                                        </div>
+                                        <div id="antigravity-oauth-status" class="form-hint" style="margin-top: 10px;">
+                                        </div>
+                                    </div>
+                                </div>
+                            </div>
+
                             <!-- Gemini CLI OAuth -->
                             <div class="card" id="gemini-cli-oauth-card">
                                 <div class="card-header">

src/modules/oauth.js

@@ -300,6 +300,135 @@ export const oauthModule = {
         }
     },
 
+    // ===== Antigravity OAuth 相关方法 =====
+
+    // 开始 Antigravity OAuth 流程
+    async startAntigravityOAuth() {
+        try {
+            const response = await this.makeRequest('/antigravity-auth-url?is_webui=1');
+            const authUrl = response.url;
+            const state = response.state || this.extractStateFromUrl(authUrl);
+
+            // 显示授权链接
+            const urlInput = document.getElementById('antigravity-oauth-url');
+            const content = document.getElementById('antigravity-oauth-content');
+            const status = document.getElementById('antigravity-oauth-status');
+
+            if (urlInput) {
+                urlInput.value = authUrl;
+            }
+            if (content) {
+                content.style.display = 'block';
+            }
+            if (status) {
+                status.textContent = i18n.t('auth_login.antigravity_oauth_status_waiting');
+                status.style.color = 'var(--warning-text)';
+            }
+
+            // 开始轮询认证状态
+            this.startAntigravityOAuthPolling(state);
+
+        } catch (error) {
+            this.showNotification(`${i18n.t('auth_login.antigravity_oauth_start_error')} ${error.message}`, 'error');
+        }
+    },
+
+    // 打开 Antigravity 授权链接
+    openAntigravityLink() {
+        const urlInput = document.getElementById('antigravity-oauth-url');
+        if (urlInput && urlInput.value) {
+            window.open(urlInput.value, '_blank');
+        }
+    },
+
+    // 复制 Antigravity 授权链接
+    async copyAntigravityLink() {
+        const urlInput = document.getElementById('antigravity-oauth-url');
+        if (urlInput && urlInput.value) {
+            try {
+                await navigator.clipboard.writeText(urlInput.value);
+                this.showNotification(i18n.t('notification.link_copied'), 'success');
+            } catch (error) {
+                urlInput.select();
+                document.execCommand('copy');
+                this.showNotification(i18n.t('notification.link_copied'), 'success');
+            }
+        }
+    },
+
+    // 开始轮询 Antigravity OAuth 状态
+    startAntigravityOAuthPolling(state) {
+        if (!state) {
+            this.showNotification(i18n.t('auth_login.missing_state'), 'error');
+            return;
+        }
+
+        const pollInterval = setInterval(async () => {
+            try {
+                const response = await this.makeRequest(`/get-auth-status?state=${encodeURIComponent(state)}`);
+                const status = response.status;
+                const statusElement = document.getElementById('antigravity-oauth-status');
+
+                if (status === 'ok') {
+                    clearInterval(pollInterval);
+                    this.resetAntigravityOAuthUI();
+                    this.showNotification(i18n.t('auth_login.antigravity_oauth_status_success'), 'success');
+                    this.loadAuthFiles();
+                } else if (status === 'error') {
+                    clearInterval(pollInterval);
+                    const errorMessage = response.error || 'Unknown error';
+                    if (statusElement) {
+                        statusElement.textContent = `${i18n.t('auth_login.antigravity_oauth_status_error')} ${errorMessage}`;
+                        statusElement.style.color = 'var(--error-text)';
+                    }
+                    this.showNotification(`${i18n.t('auth_login.antigravity_oauth_status_error')} ${errorMessage}`, 'error');
+                    setTimeout(() => {
+                        this.resetAntigravityOAuthUI();
+                    }, 3000);
+                } else if (status === 'wait') {
+                    if (statusElement) {
+                        statusElement.textContent = i18n.t('auth_login.antigravity_oauth_status_waiting');
+                        statusElement.style.color = 'var(--warning-text)';
+                    }
+                }
+            } catch (error) {
+                clearInterval(pollInterval);
+                const statusElement = document.getElementById('antigravity-oauth-status');
+                if (statusElement) {
+                    statusElement.textContent = `${i18n.t('auth_login.antigravity_oauth_polling_error')} ${error.message}`;
+                    statusElement.style.color = 'var(--error-text)';
+                }
+                this.showNotification(`${i18n.t('auth_login.antigravity_oauth_polling_error')} ${error.message}`, 'error');
+                setTimeout(() => {
+                    this.resetAntigravityOAuthUI();
+                }, 3000);
+            }
+        }, 2000);
+
+        setTimeout(() => {
+            clearInterval(pollInterval);
+        }, 5 * 60 * 1000);
+    },
+
+    // 重置 Antigravity OAuth UI 到初始状态
+    resetAntigravityOAuthUI() {
+        const urlInput = document.getElementById('antigravity-oauth-url');
+        const content = document.getElementById('antigravity-oauth-content');
+        const status = document.getElementById('antigravity-oauth-status');
+
+        if (urlInput) {
+            urlInput.value = '';
+        }
+        if (content) {
+            content.style.display = 'none';
+        }
+        if (status) {
+            status.textContent = '';
+            status.style.color = '';
+            status.className = '';
+        }
+    },
+
     // ===== Gemini CLI OAuth 相关方法 =====
 
     // 开始 Gemini CLI OAuth 流程

src/utils/constants.js

@@ -109,6 +109,7 @@ export const REQUEST_TIMEOUT_MS = 30 * 1000;
 export const OAUTH_CARD_IDS = [
     'codex-oauth-card',
     'anthropic-oauth-card',
+    'antigravity-oauth-card',
     'gemini-cli-oauth-card',
     'qwen-oauth-card',
     'iflow-oauth-card'
@@ -120,6 +121,7 @@ export const OAUTH_CARD_IDS = [
 export const OAUTH_PROVIDERS = {
     CODEX: 'codex',
     ANTHROPIC: 'anthropic',
+    ANTIGRAVITY: 'antigravity',
     GEMINI_CLI: 'gemini-cli',
     QWEN: 'qwen',
     IFLOW: 'iflow'