Move to Server Side Render with expressjs

Backend Rewritten in typescript

Signed-off-by: Marc Pervaz Boocha <mboocha@sudomsg.xyz>

 On branch main
 Your branch is up to date with 'origin/main'.

 Changes to be committed:
	new file:   .editorconfig
	modified:   .gitignore
	new file:   Containerfile
	renamed:    favicon/icon.svg -> assets/favicon.svg
	modified:   assets/index.css
	deleted:    assets/index.js
	deleted:    assets/mandle.png
	deleted:    assets/sw.js
	new file:   assets/syntax.css
	modified:   deploy
	deleted:    eleventy.config.js
	deleted:    favicon/192.png
	deleted:    favicon/512.png
	deleted:    favicon/icon.ico
	deleted:    license
	modified:   package-lock.json
	modified:   package.json
	deleted:    src/_data/env.js
	deleted:    src/_data/metadata.js
	deleted:    src/_includes/base.njk
	deleted:    src/_includes/page.njk
	deleted:    src/_includes/post.njk
	deleted:    src/about.njk
	deleted:    src/blog.njk
	new file:   src/client/index.ts
	deleted:    src/gen/atom.njk
	deleted:    src/gen/error.njk
	deleted:    src/gen/feedjson.11ty.js
	deleted:    src/gen/gen.11tydata.js
	deleted:    src/gen/manifest.11ty.js
	deleted:    src/gen/metadata.11ty.js
	deleted:    src/gen/robot.njk
	deleted:    src/gen/sitemap.njk
	deleted:    src/index.njk
	deleted:    src/post/post.11tydata.js
	new file:   src/server/app.ts
	new file:   src/server/build.ts
	new file:   src/server/content/about.ts
	new file:   src/server/content/blog.ts
	new file:   src/server/content/feed.ts
	new file:   src/server/content/index.ts
	new file:   src/server/content/robots.ts
	new file:   src/server/content/sitemap.ts
	new file:   src/server/content/webmanifest.ts
	new file:   src/server/errHanadler.ts
	new file:   src/server/img.ts
	new file:   src/server/metadata.ts
	new file:   src/server/router.ts
	new file:   src/server/server.ts
	new file:   src/server/template/Base.ts
	new file:   src/server/template/Page.ts
	new file:   src/server/template/Post.ts
	new file:   src/server/template/atom.ts
	new file:   src/server/template/header.ts
	new file:   src/server/template/html.ts
	new file:   src/server/template/sitemap.ts
	new file:   src/server/template/syntax.ts
	new file:   src/server/template/table.ts
	new file:   src/server/template/vdom.ts
	new file:   src/server/template/xml.ts
	new file:   src/server/utils/createUrl.ts
	new file:   src/server/utils/curl.ts
	new file:   src/server/utils/isDefined.ts
	new file:   src/server/utils/isDevel.ts
	new file:   src/server/utils/relDir.ts
	new file:   src/server/utils/relUrl.ts
	new file:   src/server/utils/schema.ts
	new file:   src/server/utils/setStingRoute.ts
	new file:   src/server/utils/strHandler.ts
	new file:   src/worker/sw.ts
	new file:   src/worker/tsconfig.json
	new file:   tsconfig.json

1 files changed, 83 insertions, 0 deletions

diff --git a/src/server/img.ts b/src/server/img.ts
new file mode 100644
index 0000000..7006c3d
--- /dev/null
+++ b/src/server/img.ts
@@ -0,0 +1,83 @@
+import sharp from "sharp"
+import { createReadStream } from "node:fs"
+import { extname, join } from "node:path"
+import createError from "http-errors"
+import type express from "express"
+
+function transform(format: keyof sharp.FormatEnum, width?: number, height?: number): sharp.Sharp {
+	var transform = sharp().withMetadata()
+
+	if (format) {
+		transform = transform.toFormat(format)
+	}
+
+	if (width || height) {
+		transform = transform.resize({ width, height })
+	}
+
+	return transform
+}
+
+function errorHand(next: express.NextFunction) {
+	return function (err: NodeJS.ErrnoException) {
+		switch (err.code) {
+			case "ENOENT":
+				next()
+				break
+			case "EISDIR":
+			case "EPERM":
+				next(createError(401))
+				break
+			default:
+				next(err)
+		}
+	}
+}
+
+export default function (path: string) {
+	return async function (req: express.Request, res: express.Response, next: express.NextFunction) {
+		const err_handler = errorHand(next)
+
+		const filepath = join(path, req.path)
+		const ext = extname(filepath).substring(1)
+		if (![
+			"svg", "heic", "heif", "avif", "jpeg", "jpg", "jpe", "tile", "dz",
+			"png", "raw", "tiff", "tif", "webp", "gif", "jp2", "jpx", "j2k",
+			"j2c", "jxl"
+		].includes(ext)) {
+			return next()
+		}
+		const width = parseInt(String(req.query['width']))
+		const height = parseInt(String(req.query['height']))
+		var { format = ext } = req.query as { format?: string }
+		if (format == "svg") {
+			if (ext == "svg") {
+				const stream = createReadStream(filepath)
+				stream.on("error", err_handler)
+				res.format({
+					[format]: function () {
+						return stream.pipe(res)
+					}
+				})
+			} else {
+				return next(createError(400))
+			}
+			return
+		}
+
+		const stream = createReadStream(filepath)
+		stream.on("error", err_handler)
+		res.format({
+			[format]: function () {
+				return stream.pipe(
+					transform(
+						format as keyof sharp.FormatEnum,
+						!isNaN(width) ? width : undefined,
+						!isNaN(height) ? height : undefined
+					)
+				).pipe(res)
+			}
+		})
+	}
+}
+