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index.js
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index.js
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const fs = require("fs");
const puppeteer = require("puppeteer");
const OSS = require('ali-oss');
const client = new OSS({
region: ' your region, oss-cn-beijing',
accessKeyId: 'your accessKeyId',
accessKeySecret: 'your accessKeySecret',
bucket: 'your bucket name',
});
async function captureScreenshot(htmlContent) {
const browser = await puppeteer.launch({
headless: true,
args: [
"--disable-gpu",
"--disable-dev-shm-usage",
"--disable-setuid-sandbox",
"--no-first-run",
"--no-zygote",
"--no-sandbox",
],
});
const page = await browser.newPage();
// 设置视口大小
await page.setViewport({ width: 820, height: 964 });
// 设置页面内容
await page.setContent(htmlContent);
let path = "/tmp/example";
await page.screenshot({ path: path, fullPage: true, type: "png" });
await browser.close();
try {
const currentDate = new Date().getTime();
// 生成文件名
const fileName = `${currentDate}.png`;
console.log(fileName); // 输出格式为 YYYYMMDD，例如 20240717
const fileData = fs.createReadStream(path);
let result = await client.putStream(fileName, fileData);
console.log(result);
return {
body: result,
headers: {
"content-type": "application/json",
},
statusCode: 200,
}
} catch (e) {
console.log(e)
return {
body: e.message,
headers: {
"content-type": "application/json",
},
statusCode: 500,
}
}
}
exports.handler = async function (event, context, callback) {
var eventObj = JSON.parse(event.toString());
var title = '';
var content = '';
var footer = '';
// get http request body
if ("body" in eventObj) {
body = JSON.parse(eventObj.body);
if (eventObj.isBase64Encoded) {
body = Buffer.from(body, 'base64').toString('utf-8');
}
title = body['title'];
content = body['content'];
footer = body['footer'];
} else {
console.log("else:---->",event);
title = eventObj['title'];
content = eventObj['content'];
footer = eventObj['footer'];
}
const htmlContent = `
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Add Text to Image</title>
<link rel="stylesheet" href="//unpkg.com/heti/umd/heti.min.css">
<style>
.image-container {
position: relative;
display: flex;
justify-content: center;
align-items: center;
width: 100%;
max-width: 800px;
margin: 0 auto;
}
.image-container img {
width: 100%;
height: auto;
display: block;
}
.text-overlay {
position: absolute;
color: rgb(0, 0, 0);
font-size: 2vw;
font-family: Arial, sans-serif;
padding: 1vw;
text-align: center;
transform: rotate(6deg);
max-width: 60%;
top: 25%;
}
.text-overlay #title{
font-size: 3vw;
text-align: center;
}
.text-overlay #footer{
text-align: right;
}
@media (max-width: 600px) {
.text-overlay {
font-size: 4vw;
padding: 2vw;
}
}
</style>
</head>
<body>
<div class="image-container">
<img src="https://telegraph-image.pages.dev/file/36594230fcca22c0480b9.jpg" alt="Image">
<div class="text-overlay">
<article class="entry heti heti--poetry">
<p id="title">
${title}
</p>
<p id="content">
${content}
</p>
<p id="footer">
${footer}
</p>
</article>
</div>
</div>
</body>
<script src="//unpkg.com/heti/umd/heti-addon.min.js"></script>
<script>
const heti = new Heti('.heti');
heti.autoSpacing();
</script>
</html>
`;
try {
const ret = await captureScreenshot(htmlContent);
callback(null, ret);
} catch (err) {
callback(null, {
body: err.message,
headers: {
"content-type": "application/json",
},
statusCode: 500,
});
}
};