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infra-go-vanity
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fix tempalting to add redirects to package paths 

Signed-off-by: Jakub Sokołowski <jakub@status.im>
This commit is contained in:
Jakub Sokołowski 2019-08-06 18:29:07 -04:00
parent 225ed57381
commit a56f5534a6
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GPG Key ID: 4EF064D0E6D63020
1 changed files with 75 additions and 28 deletions
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103
go_vanity.js
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@ -5,18 +5,54 @@
* - https://developers.cloudflare.com/workers/about/how-workers-work/
* - https://developers.cloudflare.com/workers/recipes/vcl-conversion/delivering-custom-responses/
* - https://developers.cloudflare.com/workers/writing-workers/handling-errors/
* - https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API
* - https://developer.mozilla.org/en-US/docs/Web/API/Request
**/
/* main config, this is what decides what gets redirected to GitHub */
const PACKAGES = {
'go.status.im/protocol': 'https://github.com/status-im/status-protocol-go',
'go.status.im/status': 'https://github.com/status-im/status-go',
'go.status.im/whisper': 'https://github.com/status-im/whisper',
}
const genMetaTags = (pkgs) => {
return Object.keys(pkgs).map(name => (
`<meta name="go-import" content="${name} git ${pkgs[name]}">`
))
/* I could use a fancy templating engine, but why bother? */
const htmlTemplate = ({meta, body}) => (`
<!doctype html>
<html class="no-js" lang="">
<head>
<meta charset="utf-8">
<title>Status.im Go Vanity</title>
<meta name="description" content="This site hosts metadata for Status.im Go packages.">
<meta name="viewport" content="width=device-width, initial-scale=1">
${meta || ''}
</head>
<body>
${body || ''}
</body>
</html>
`)
const tableTemplate = ({rows}) => (`
<table>
<thead>
<tr>
<th>Alias</th>
<th>Origin</th>
</tr>
</thead>
<tbody>
${rows.join('\n ')}
</tbody>
</table>
`)
const genMetaTag = (pkg) => {
return `<meta name="go-import" content="${pkg} git ${PACKAGES[pkg]}">`
}
const genPkgLink = (pkg) => {
return `<p>Redirect: <code>${pkg}</code> to <a href="${PACKAGES[pkg]}">${PACKAGES[pkg]}</a></p>`
}
const genTabRows = (pkgs) => {
@ -25,36 +61,47 @@ const genTabRows = (pkgs) => {
))
}
const INDEX_HTML = `
<!doctype html>
<html class="no-js" lang="">
<head>
<meta charset="utf-8">
<title>Status.im Go Vanity</title>
<meta name="description" content="This site hosts metadata for Status.im Go packages.">
<meta name="viewport" content="width=device-width, initial-scale=1">
${genMetaTags(PACKAGES).join('\n ')}
</head>
<body>
<table>
<tr>
<th>Alias</th>
<th>Origin</th>
</tr>
${genTabRows(PACKAGES).join('\n ')}
</table>
</body>
</html>
`
const findMatchingPackage = (url) => {
return Object.keys(PACKAGES).find((key) => url.endsWith(key))
}
/* fetch and modify request object */
const handleRequest = async (request) => {
return new Response(INDEX_HTML, {
headers: {'Content-Type': 'text/html'}
/* Redirect requests to specific repos to GitHub using meta tags */
let pkg = findMatchingPackage(request.url)
if (pkg != undefined) {
return new Response(
htmlTemplate({
meta: genMetaTag(pkg),
body: genPkgLink(pkg),
}),
{ headers: {'Content-Type': 'text/html'} }
)
}
/* All other paths should return a table with all redirects */
return new Response(
htmlTemplate({
body: tableTemplate({rows: genTabRows(PACKAGES)})
}),
{ headers: {'Content-Type': 'text/html'}
})
}
/* wrapper for returning JS errors in response body */
const handleErrors = (func) => {
try {
return func()
} catch (e) {
return new Response(`Error:\n${e.stack}`)
}
}
/* handle every new request */
addEventListener('fetch', (event) => {
event.respondWith(handleRequest(event.request))
event.respondWith(
handleErrors(
handleRequest.bind(null, event.request)
)
)
})