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export chart to HTML

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This commit is contained in:
Jan Prochazka
2021-11-11 13:16:46 +01:00
parent 423bd3f223
commit 0fd4084fac
6 changed files with 121 additions and 28 deletions
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12
packages/api/src/controllers/files.js
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@@ -1,6 +1,8 @@
const uuidv1 = require('uuid/v1');
const fs = require('fs-extra');
const path = require('path');
const { filesdir, archivedir, resolveArchiveFolder } = require('../utility/directories');
const { filesdir, archivedir, resolveArchiveFolder, uploadsdir } = require('../utility/directories');
const getChartExport = require('../utility/getChartExport');
const hasPermission = require('../utility/hasPermission');
const socket = require('../utility/socket');
const scheduler = require('./scheduler');
@@ -114,4 +116,12 @@ module.exports = {
}
return res;
},
exportChart_meta: 'post',
async exportChart({ title, config }) {
const html = getChartExport(title, config);
const fileName = `${uuidv1()}.html`;
await fs.writeFile(path.join(uploadsdir(), fileName), html);
return fileName;
},
};

38
packages/api/src/utility/getChartExport.js Normal file
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@@ -0,0 +1,38 @@
const getChartExport = (title, config) => {
return `<html>
<meta charset='utf-8'>
<head>
${title ? `<title>${title}</title>` : ''}
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.6.0/chart.min.js" integrity="sha512-GMGzUEevhWh8Tc/njS0bDpwgxdCJLQBWG3Z2Ct+JGOpVnEmjvNx6ts4v6A2XJf1HOrtOsfhv3hBKpK9kE5z8AQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js" integrity="sha512-qTXRIMyZIFb8iQcfjXWCO8+M5Tbc38Qi5WzdPOYZHIlZpzBHG3L3by84BBBOiRGiEb7KKtAOAs5qYdUiZiQNNQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/chartjs-adapter-moment/1.0.0/chartjs-adapter-moment.min.js" integrity="sha512-oh5t+CdSBsaVVAvxcZKy3XJdP7ZbYUBSRCXDTVn0ODewMDDNnELsrG9eDm8rVZAQg7RsDD/8K3MjPAFB13o6eA==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script>
const config = ${JSON.stringify(config)};
function showChart() {
document.getElementById('myImage').style.display = "none";
const myChart = new Chart(
document.getElementById('myChart'),
config
);
}
</script>
</head>
</html>
<body onload="showChart()">
<img src="img1.png" id="myImage" />
<div>
<canvas id="myChart"></canvas>
</div>
</body>
</html>`;
};
module.exports = getChartExport;