From 9879365e9b356ba03706f9886d5c1fa0af023b4a Mon Sep 17 00:00:00 2001
From: Jannis R <mail@jannisr.de>
Date: Thu, 20 Apr 2023 00:12:19 +0200
Subject: [PATCH] use JS build script

db-rest equivalent of https://github.com/derhuerst/vbb-rest/commit/605085229e7c1e79ab530963af2a5e45f19576a3
---
 api-docs.js => build/api-docs.js | 66 ++++++++++++++++----------------
 build/index.js                   | 62 ++++++++++++++++++++++++++++++
 package.json                     |  5 +--
 3 files changed, 98 insertions(+), 35 deletions(-)
 rename api-docs.js => build/api-docs.js (93%)
 create mode 100755 build/index.js

diff --git a/api-docs.js b/build/api-docs.js
similarity index 93%
rename from api-docs.js
rename to build/api-docs.js
index 5004323..14f7cf9 100644
--- a/api-docs.js
+++ b/build/api-docs.js
@@ -1,5 +1,5 @@
 import {generateApiDocs} from 'hafas-rest-api/tools/generate-docs.js'
-import {api} from './api.js'
+import {api} from '../api.js'
 
 const HEAD = `\
 # \`v6.db.transport.rest\` API documentation
@@ -416,40 +416,42 @@ curl "https://v6.db.transport.rest/radar?$bbox&results=10" -s | jq
 `,
 }
 
-const {
-	listOfRoutes,
-	routes,
-	tail,
-} = generateApiDocs(api.routes)
+const generateMarkdownApiDocs = async function* () {
+	const {
+		listOfRoutes,
+		routes,
+		tail,
+	} = generateApiDocs(api.routes)
 
-const sortedRoutes = Object.entries(routes)
-.sort(([routeA], [routeB]) => {
-	const iA = order.indexOf(routeA)
-	const iB = order.indexOf(routeB)
-	if (iA >= 0 && iB >= 0) return iA - iB
-	if (iA < 0 && iB >= 0) return 1
-	if (iB < 0 && iA >= 0) return -1
-	return 0
-})
+	const sortedRoutes = Object.entries(routes)
+	.sort(([routeA], [routeB]) => {
+		const iA = order.indexOf(routeA)
+		const iB = order.indexOf(routeB)
+		if (iA >= 0 && iB >= 0) return iA - iB
+		if (iA < 0 && iB >= 0) return 1
+		if (iB < 0 && iA >= 0) return -1
+		return 0
+	})
 
-const write = process.stdout.write.bind(process.stdout)
+	yield HEAD
+	yield `\n\n`
 
-write(HEAD)
-write(`\n\n`)
+	yield listOfRoutes
+	yield `\n\n`
 
-write(listOfRoutes)
-write(`\n\n`)
-
-for (const [route, params] of sortedRoutes) {
-	write(`## \`GET ${route}\`\n\n`)
-	write(descriptions[route] || '')
-	write(`
-### Query Parameters
-`)
-	write(params)
-	if (examples[route]) {
-		write('\n' + examples[route])
+	for (const [route, params] of sortedRoutes) {
+		yield `## \`GET ${route}\`\n\n`
+		yield descriptions[route] || ''
+		yield `\n### Query Parameters\n`
+		yield params
+		if (examples[route]) {
+			yield '\n' + examples[route]
+		}
+		yield `\n\n`
 	}
-	write(`\n\n`)
+	yield tail
 }
-write(tail)
+
+export {
+	generateMarkdownApiDocs,
+}
\ No newline at end of file
diff --git a/build/index.js b/build/index.js
new file mode 100755
index 0000000..610781d
--- /dev/null
+++ b/build/index.js
@@ -0,0 +1,62 @@
+#!/usr/bin/env node
+
+import {dirname, join} from 'node:path'
+import {pipeline} from 'node:stream/promises'
+import {createReadStream, createWriteStream} from 'node:fs'
+import {copyFile} from 'node:fs/promises'
+import _technicalDocsCli from '@derhuerst/technical-docs-cli'
+import {config} from '../api.js'
+const {
+	createMarkdownRenderer,
+	determineSyntaxStylesheetPath,
+} = _technicalDocsCli
+import {generateMarkdownApiDocs} from './api-docs.js'
+
+const BASE_URL = new URL('..', import.meta.url).href
+const API_DOCS_DEST = 'docs/api.md'
+const DOCS_TO_RENDER = [
+	['docs/readme.md', 'docs/index.html'],
+	['docs/getting-started.md', 'docs/getting-started.html'],
+	['docs/api.md', 'docs/api.html'],
+]
+const SYNTAX_STYLESHEET_URL = '/syntax.css'
+const SYNTAX_STYLESHEET_SRC = determineSyntaxStylesheetPath('github')
+const SYNTAX_STYLESHEET_DEST = 'docs/syntax.css'
+
+{
+	console.info('writing Markdown API docs to ' + API_DOCS_DEST)
+
+	const destPath = new URL(API_DOCS_DEST, BASE_URL).pathname
+	await pipeline(
+		generateMarkdownApiDocs(),
+		createWriteStream(destPath),
+	)
+}
+
+const markdownRenderingCfg = {
+	syntaxStylesheetUrl: SYNTAX_STYLESHEET_URL,
+}
+for (const [src, dest] of DOCS_TO_RENDER) {
+	console.info(`rendering Markdown file ${src} to HTML file ${dest}`)
+
+	const srcPath = new URL(src, BASE_URL).pathname
+	const destPath = new URL(dest, BASE_URL).pathname
+	// unfortunately, we can't use stream.pipeline right now
+	// see https://github.com/unifiedjs/unified-stream/issues/1
+	await new Promise((resolve, reject) => {
+		createReadStream(srcPath)
+		.once('error', reject)
+		.pipe(createMarkdownRenderer(markdownRenderingCfg))
+		.once('error', reject)
+		.pipe(createWriteStream(destPath))
+		.once('error', reject)
+		.once('finish', resolve)
+	})
+}
+
+{
+	const srcPath = SYNTAX_STYLESHEET_SRC
+	const destPath = new URL(SYNTAX_STYLESHEET_DEST, BASE_URL).pathname
+	console.info(`copying syntax stylesheet from ${srcPath} to ${destPath}`)
+	await copyFile(srcPath, destPath)
+}
diff --git a/package.json b/package.json
index 59b6d04..ee78d9d 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
 		"serve-static": "^1.14.1"
 	},
 	"devDependencies": {
-		"@derhuerst/technical-docs-cli": "^1.1.0",
+		"@derhuerst/technical-docs-cli": "^1.5.0",
 		"axios": "~1.1",
 		"eslint": "^8.12.0",
 		"get-port": "^6.1.2",
@@ -46,8 +46,7 @@
 		"tape": "^5.5.2"
 	},
 	"scripts": {
-		"docs": "node api-docs.js >docs/api.md && build-technical-doc --syntax-stylesheet-url /syntax.css <docs/readme.md >docs/index.html && build-technical-doc --syntax-stylesheet-url /syntax.css <docs/getting-started.md >docs/getting-started.html && build-technical-doc --syntax-stylesheet-url /syntax.css <docs/api.md >docs/api.html && build-technical-doc --syntax-stylesheet github >docs/syntax.css",
-		"build": "npm run docs",
+		"build": "REDIS_URL='' ./build/index.js",
 		"start": "node index.js",
 		"lint": "eslint .",
 		"test": "node test/index.js | tap-min"