2021-09-23 22:37:47 -04:00
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// import React from 'react'
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// import ReactDOMServer from 'react-dom/server'
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import { contentType } from 'media-types'
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import { Router } from 'oak'
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// import App from '~/client/App.tsx'
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2021-09-29 16:00:39 -04:00
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function indexOfAll(source: string, query: string): number[] {
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let currentPosition = 0
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const buffer: number[] = []
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while (currentPosition !== -1) {
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const lastPosition = currentPosition
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currentPosition = source.indexOf(query, lastPosition + 1)
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if (currentPosition !== -1) buffer.push(currentPosition)
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}
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// ensure it's sorted in case while loop betrays us
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return buffer.sort()
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}
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interface ResolvedEnvVar {
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callsiteBounds: [number, number]
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varname: string
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value?: string
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}
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const ENV_SEARCH_STRING = "Deno.env.get(\""
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const ENV_SEARCH_END_STRING = "\")"
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function resolveClientDenoEnvVars(source: string): string {
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const startIndices = indexOfAll(source, ENV_SEARCH_STRING)
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const resolved = startIndices.map((startIndex) => {
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const endIndex = source.indexOf(ENV_SEARCH_END_STRING, startIndex)
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const varname = source.slice(startIndex + ENV_SEARCH_STRING.length, endIndex)
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const bounds = [startIndex, endIndex + ENV_SEARCH_END_STRING.length]
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const value = Deno.env.get(varname)
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return {
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callsiteBounds: bounds,
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varname,
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value: `"${value}"`,
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}
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})
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function replaceBounds(input: string, newText: string | undefined, start: number, end: number) {
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return `${input.slice(0, start)}${newText}${input.slice(end)}`
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}
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// reassemble source code by reversing the order and replacing strings
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const reassembledSource = resolved.reverse().reduce(
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(currentSource, {callsiteBounds, value, varname}) => {
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if (value === undefined)
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throw new Error(`Deno env variable ${varname} found in client code but not provided to server.`)
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return replaceBounds(currentSource, value, callsiteBounds[0], callsiteBounds[1])
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},
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source,
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)
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return reassembledSource
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}
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function mapDict<T, U>(
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dict: Record<string, T>,
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fn: (entry: [string, T], index: number) => [string, U],
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): Record<string, U> {
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return Object.fromEntries(
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Object.entries(dict).map(fn)
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)
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}
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2021-09-23 22:37:47 -04:00
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async function createClientBundle() {
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const {files} = await Deno.emit('server/client.tsx', {
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bundle: 'module',
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importMapPath: 'import_map.json',
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compilerOptions: {
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lib: ["dom", "dom.iterable", "esnext"],
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allowJs: true,
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jsx: "react",
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strictPropertyInitialization: false,
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},
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})
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2021-09-29 16:00:39 -04:00
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const bundle = mapDict(files, ([path, source], i) => {
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const resolved = resolveClientDenoEnvVars(source)
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if (Deno.env.get("DEBUG")) {
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Deno.writeTextFileSync(`debug/output${i}.js`, source)
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Deno.writeTextFileSync(`debug/resolved${i}.js`, resolved)
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}
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return [path, resolved]
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})
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return bundle
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2021-09-23 22:37:47 -04:00
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}
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const bundle = await createClientBundle()
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function getBundleFile(path: string) {
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return bundle[`deno:///${path}`]
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}
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function getAssetFile(file: string): Uint8Array | null {
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try {
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const asset = Deno.readFileSync(`assets/${file}`)
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return asset
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} catch {
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return null
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}
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}
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const html = `
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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2021-09-24 00:47:45 -04:00
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<title>Tomecraft</title>
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<meta name="description" content="Tactical CCG" />
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2021-09-23 22:37:47 -04:00
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<link href="styles.css" rel="stylesheet" type="text/css">
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<style>
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body {
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margin: 0;
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padding: 0;
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}
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body, #root {
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height: 100vh;
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width: 100vw;
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}
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</style>
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</head>
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<body>
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<noscript>You need to enable JavaScript to run this app.</noscript>
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<div id="root">
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</div>
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<script src="/bundle.js"></script>
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</body>
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</html>
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`
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const staticRouter = new Router()
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// handle static routes by proxying to web resources
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// https://deno.com/deploy/docs/serve-static-assets
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staticRouter
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.get('/', (ctx) => {
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ctx.response.body = html
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})
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.get('/styles.css', (ctx) => {
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const styles = Deno.readTextFileSync('client/styles.css')
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const contentTypeValue = contentType('styles.css')
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const headers = new Headers(ctx.response.headers)
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if (contentTypeValue) {
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headers.set('Content-Type', contentTypeValue)
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}
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ctx.response.headers = headers
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ctx.response.body = styles
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})
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.get('/assets/:pathname', async (ctx, next) => {
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const assetPath = ctx.params.pathname
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if (!assetPath) {
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return await next()
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}
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const file = getAssetFile(assetPath)
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if (!file) {
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return await next()
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}
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const filePathParts = assetPath.split('/')
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const contentTypeValue = contentType(filePathParts[filePathParts.length - 1])
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const headers = new Headers(ctx.response.headers)
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if (contentTypeValue) {
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headers.set('Content-Type', contentTypeValue)
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}
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ctx.response.headers = headers
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ctx.response.body = file
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})
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.get('/:pathname', async (ctx, next) => {
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const pathname = ctx.params.pathname
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if (!pathname) {
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return await next()
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}
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const file = getBundleFile(pathname)
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if (!file) {
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return await next()
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}
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// get just the last bit so we can determine the correct filetype
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// contentType from media-types@v2.10.0 checks path.includes('/')
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const filePathParts = pathname.split('/')
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const contentTypeValue = contentType(filePathParts[filePathParts.length - 1])
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const headers = new Headers(ctx.response.headers)
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if (contentTypeValue) {
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headers.set('Content-Type', contentTypeValue)
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}
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ctx.response.headers = headers
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if (pathname.endsWith('.js')) {
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ctx.response.type = 'application/javascript'
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}
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ctx.response.body = file
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})
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export default staticRouter
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