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* Basic Operation Templates for Browser Hand
*
* Contains fundamental browser operations: navigate, screenshot, form filling, clicking.
*/
import type { TaskTemplate, ExecutionContext } from './types';
// ============================================================================
// Template: Navigate and Screenshot
// ============================================================================
const navigateScreenshotTemplate: TaskTemplate = {
id: 'basic_navigate_screenshot',
name: '打开网页并截图',
description: '访问指定 URL 并截取页面快照',
category: 'basic',
icon: 'Camera',
params: [
{
key: 'url',
label: '网页地址',
type: 'url',
required: true,
placeholder: 'https://example.com',
description: '要访问的网页 URL',
},
{
key: 'waitTime',
label: '等待时间 (毫秒)',
type: 'number',
required: false,
default: 2000,
min: 0,
max: 30000,
description: '页面加载后等待的时间',
},
{
key: 'waitFor',
label: '等待元素',
type: 'text',
required: false,
placeholder: '.main-content',
description: '等待特定元素出现后再截图（CSS 选择器）',
},
],
execute: async (params, context: ExecutionContext) => {
const { browser, onProgress, onLog } = context;
const url = params.url as string;
const waitTime = (params.waitTime as number) ?? 2000;
const waitFor = params.waitFor as string | undefined;
onProgress('正在创建浏览器会话...', 0);
onLog('info', `准备访问: ${url}`);
// Navigate to URL
onProgress('正在导航到页面...', 20);
const navResult = await browser.goto(url);
onLog('info', `页面标题: ${navResult.title}`);
// Wait for page to load
if (waitFor) {
onProgress('等待页面元素加载...', 40);
onLog('action', `等待元素: ${waitFor}`);
await browser.wait(waitFor, 10000);
} else if (waitTime > 0) {
onProgress('等待页面加载...', 40);
await new Promise((resolve) => setTimeout(resolve, waitTime));
}
// Take screenshot
onProgress('正在截取页面快照...', 80);
const screenshot = await browser.screenshot();
onLog('action', '截图完成', { size: screenshot.base64.length });
onProgress('完成', 100);
return {
url: await browser.url(),
title: await browser.title(),
screenshot: screenshot.base64,
format: screenshot.format,
};
},
};
// ============================================================================
// Template: Fill Form
// ============================================================================
const fillFormTemplate: TaskTemplate = {
id: 'basic_fill_form',
name: '填写表单',
description: '填写网页表单并可选提交',
category: 'basic',
icon: 'FileText',
params: [
{
key: 'url',
label: '网页地址',
type: 'url',
required: true,
placeholder: 'https://example.com/form',
},
{
key: 'fields',
label: '表单字段',
type: 'json',
required: true,
default: [],
description: 'JSON 数组，每项包含 selector 和 value',
placeholder: '[{"selector": "input[name=\\"email\\"]", "value": "test@example.com"}]',
},
{
key: 'submitSelector',
label: '提交按钮选择器',
type: 'text',
required: false,
placeholder: 'button[type="submit"]',
description: '填写完成后点击此按钮提交',
},
{
key: 'waitForNavigation',
label: '等待页面跳转',
type: 'boolean',
required: false,
default: false,
description: '提交后等待新页面加载完成',
},
],
execute: async (params, context: ExecutionContext) => {
const { browser, onProgress, onLog } = context;
const url = params.url as string;
const fields = params.fields as Array<{ selector: string; value: string }>;
const submitSelector = params.submitSelector as string | undefined;
const waitForNavigation = params.waitForNavigation as boolean;
onProgress('正在导航到页面...', 0);
onLog('info', `访问: ${url}`);
await browser.goto(url);
onProgress('正在填写表单...', 30);
const totalFields = fields.length;
for (let i = 0; i < fields.length; i++) {
const field = fields[i];
const progress = 30 + Math.floor((i / totalFields) * 40);
onProgress(`正在填写字段 ${i + 1}/${totalFields}...`, progress);
onLog('action', `填写: ${field.selector}`, { value: field.value });
try {
await browser.wait(field.selector, 5000);
await browser.type(field.selector, field.value, true);
} catch (error) {
onLog('warn', `字段填写失败: ${field.selector}`, {
error: String(error),
});
}
}
let result = {
url: await browser.url(),
fieldsFilled: fields.length,
submitted: false,
};
if (submitSelector) {
onProgress('正在提交表单...', 80);
onLog('action', `点击提交: ${submitSelector}`);
try {
await browser.click(submitSelector);
result.submitted = true;
if (waitForNavigation) {
onProgress('等待页面跳转...', 90);
await new Promise((resolve) => setTimeout(resolve, 2000));
}
} catch (error) {
onLog('error', `提交失败: ${submitSelector}`, {
error: String(error),
});
}
}
onProgress('完成', 100);
return result;
},
};
// ============================================================================
// Template: Click and Navigate
// ============================================================================
const clickNavigateTemplate: TaskTemplate = {
id: 'basic_click_navigate',
name: '点击导航',
description: '点击页面元素并等待导航',
category: 'basic',
icon: 'MousePointerClick',
params: [
{
key: 'url',
label: '起始页面',
type: 'url',
required: true,
placeholder: 'https://example.com',
},
{
key: 'selector',
label: '点击目标',
type: 'text',
required: true,
placeholder: 'a.link-to-page',
description: '要点击的元素的 CSS 选择器',
},
{
key: 'waitAfter',
label: '等待时间 (毫秒)',
type: 'number',
required: false,
default: 2000,
description: '点击后等待的时间',
},
{
key: 'takeScreenshot',
label: '截图结果',
type: 'boolean',
required: false,
default: true,
description: '点击后是否截图',
},
],
execute: async (params, context: ExecutionContext) => {
const { browser, onProgress, onLog } = context;
const url = params.url as string;
const selector = params.selector as string;
const waitAfter = (params.waitAfter as number) ?? 2000;
const takeScreenshot = params.takeScreenshot as boolean;
onProgress('正在导航到起始页面...', 0);
onLog('info', `访问: ${url}`);
await browser.goto(url);
onProgress('正在查找点击目标...', 30);
onLog('action', `等待元素: ${selector}`);
await browser.wait(selector, 10000);
onProgress('正在点击...', 50);
onLog('action', `点击: ${selector}`);
await browser.click(selector);
onProgress('等待导航完成...', 70);
await new Promise((resolve) => setTimeout(resolve, waitAfter));
const result: Record<string, unknown> = {
fromUrl: url,
toUrl: await browser.url(),
title: await browser.title(),
};
if (takeScreenshot) {
onProgress('正在截图...', 90);
const screenshot = await browser.screenshot();
result.screenshot = screenshot.base64;
onLog('action', '截图完成');
}
onProgress('完成', 100);
return result;
},
};
// ============================================================================
// Template: Get Page Info
// ============================================================================
const getPageInfoTemplate: TaskTemplate = {
id: 'basic_get_page_info',
name: '获取页面信息',
description: '获取页面标题、URL 和基本信息',
category: 'basic',
icon: 'Info',
params: [
{
key: 'url',
label: '网页地址',
type: 'url',
required: true,
placeholder: 'https://example.com',
},
{
key: 'selectors',
label: '额外选择器',
type: 'textarea',
required: false,
placeholder: '.title\n.description\n.price',
description: '要提取文本的 CSS 选择器（每行一个）',
},
],
execute: async (params, context: ExecutionContext) => {
const { browser, onProgress, onLog } = context;
const url = params.url as string;
const selectorsText = params.selectors as string | undefined;
const selectors = selectorsText
? selectorsText.split('\n').map((s) => s.trim()).filter(Boolean)
: [];
onProgress('正在导航到页面...', 0);
onLog('info', `访问: ${url}`);
await browser.goto(url);
onProgress('正在获取页面信息...', 50);
const result: Record<string, unknown> = {
url: await browser.url(),
title: await browser.title(),
};
if (selectors.length > 0) {
onProgress('正在提取元素文本...', 70);
const extracted: Record<string, string> = {};
for (const selector of selectors) {
try {
const text = await browser.eval(`
(selector) => {
const el = document.querySelector(selector);
return el ? el.textContent?.trim() : null;
}
`, [selector]);
if (text) {
extracted[selector] = text as string;
onLog('info', `提取: ${selector}`, { text });
}
} catch (error) {
onLog('warn', `提取失败: ${selector}`);
}
}
result.extracted = extracted;
}
onProgress('完成', 100);
return result;
},
};
// ============================================================================
// Template: Execute JavaScript
// ============================================================================
const executeJsTemplate: TaskTemplate = {
id: 'basic_execute_js',
name: '执行 JavaScript',
description: '在页面上执行自定义 JavaScript 代码',
category: 'basic',
icon: 'Code',
params: [
{
key: 'url',
label: '网页地址',
type: 'url',
required: true,
placeholder: 'https://example.com',
},
{
key: 'script',
label: 'JavaScript 代码',
type: 'textarea',
required: true,
placeholder: 'return document.title;',
description: '要执行的 JavaScript 代码',
},
],
execute: async (params, context: ExecutionContext) => {
const { browser, onProgress, onLog } = context;
const url = params.url as string;
const script = params.script as string;
onProgress('正在导航到页面...', 0);
onLog('info', `访问: ${url}`);
await browser.goto(url);
onProgress('正在执行 JavaScript...', 50);
onLog('action', '执行脚本', { script: script.substring(0, 100) });
try {
const result = await browser.eval(script);
onLog('info', '执行成功', { result: JSON.stringify(result).substring(0, 200) });
onProgress('完成', 100);
return { success: true, result };
} catch (error) {
onLog('error', `执行失败: ${error}`);
onProgress('失败', 100);
return { success: false, error: String(error) };
}
},
};
// ============================================================================
// Export All Basic Templates
// ============================================================================
export const basicTemplates: TaskTemplate[] = [
navigateScreenshotTemplate,
fillFormTemplate,
clickNavigateTemplate,
getPageInfoTemplate,
executeJsTemplate,
];
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