ethers.js/docs.wrm/generate-redirects.js

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2020-06-12 19:21:37 -04:00
const fs = require("fs");
const { resolve } = require("path");
const Content = `
<html>
<head>
<title>ethers.js - Legacy Documentation</title>
<style type="text/css">
html {
font-family: sans-serif;
}
h1 {
opacity: 0.8;
}
.content {
border: 2px solid #000;
border-radius: 7px;
box-shadow: 5px 5px 10px #aaa;
left: 50%;
padding: 20px;
position: absolute;
text-align: center;
transform: translate(-50%, 30px);
width: 700px;
}
.hr {
border-top: 1px solid black;
margin: 4px 10px 40px;
}
span.v5 {
font-size: 24px;
margin-bottom: 40px;
}
span.v4 {
opacity: 0.7;
}
</style>
</head>
<body>
<div class="content">
<h1>This link is out-of-date <i>and</i> has moved.</h1>
<div class="hr"></div>
<span class="v5">Click <a id="link-v5" href="%%DEFAULT%%">here</a> to visit the updated documentation</span>
<br />
<br />
<br />
<span class="v4">or continue to the historic <a id="link-v4" href="%%LEGACY%%">legacy documentation</a>.</span>
</div>
<script type="text/javascript">
var redirects = %%REDIRECTS%%;
var hash = location.hash;
if (hash && hash !== "#") {
hash = hash.substring(1);
var v4 = document.getElementById("link-v4");
v4.setAttribute("href", v4.getAttribute("href").split("#")[0] + "#" + hash);
var target = redirects[hash];
if (target) {
var v5 = document.getElementById("link-v5");
v5.setAttribute("href", target);
}
}
</script>
</body>
</html>`
const redirects = require("./redirects.json");
const links = require("../docs/v5/metadata.json").links;
const result = { };
const prefix = "ethers.js/html/";
Object.keys(redirects).forEach((uri) => {
if (uri.substring(0, prefix.length) !== prefix) { return; }
const comps = uri.substring(prefix.length).split("#");
const filename = comps[0];
const hash = comps[1] || "_";
const tag = redirects[uri];
let path = null;
if (tag.path) {
path = tag.path;
} else if (tag.tag) {
path = links[tag.tag] || null;
} else {
console.log("Missing tag:", uri);
return;
}
if (!path) {
console.log("Missing path:", uri);
return;
}
if (!result[filename]) { result[filename] = {
"_legacy": `/v4/${ filename }`
}; }
result[filename][hash] = path;
});
function generateOutput(filename) {
const page = result[filename];
return Content.replace("%%DEFAULT%%", page._ || "/v5/")
.replace("%%LEGACY%%", page._legacy || "/v4/")
.replace("%%REDIRECTS%%", JSON.stringify(page));
}
Object.keys(result).forEach((filename) => {
const output = generateOutput(filename);
const path = resolve(__dirname, "../docs/ethers.js/html", filename);
fs.writeFileSync(path, output);
});