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silverbullet/server/server.ts

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import * as path from "https://deno.land/std@0.125.0/path/mod.ts";
import FileInfo = Deno.FileInfo;
import { Application, Router } from "https://deno.land/x/oak/mod.ts";
import { oakCors } from "https://deno.land/x/cors@v1.2.0/mod.ts";
import { readAll } from "https://deno.land/std@0.126.0/streams/mod.ts";
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import { exists } from "https://deno.land/std@0.126.0/fs/mod.ts";
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import { recursiveReaddir } from "https://deno.land/x/recursive_readdir@v2.0.0/mod.ts";
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type PageMeta = {
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name: string;
lastModified: number;
};
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const fsPrefix = "/fs";
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const pagesPath = "../pages";
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const fsRouter = new Router();
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fsRouter.use(oakCors({ methods: ["OPTIONS", "GET", "PUT", "POST"] }));
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fsRouter.get("/", async (context) => {
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const localPath = pagesPath;
let fileNames: PageMeta[] = [];
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const markdownFiles = (await recursiveReaddir(localPath)).filter(
(file: string) => path.extname(file) === ".md"
);
for (const p of markdownFiles) {
const stat = await Deno.stat(p);
fileNames.push({
name: p.substring(
localPath.length + 1,
p.length - path.extname(p).length
),
lastModified: stat.mtime?.getTime()!,
});
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}
context.response.body = JSON.stringify(fileNames);
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});
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fsRouter.get("/:page(.*)", async (context) => {
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const pageName = context.params.page;
const localPath = `${pagesPath}/${pageName}.md`;
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try {
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const stat = await Deno.stat(localPath);
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const text = await Deno.readTextFile(localPath);
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context.response.headers.set("Last-Modified", "" + stat.mtime?.getTime());
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context.response.body = text;
} catch (e) {
context.response.status = 404;
context.response.body = "";
}
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});
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fsRouter.options("/:page(.*)", async (context) => {
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const localPath = `${pagesPath}/${context.params.page}.md`;
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try {
const stat = await Deno.stat(localPath);
context.response.headers.set("Content-length", `${stat.size}`);
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context.response.headers.set("Last-Modified", "" + stat.mtime?.getTime());
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} catch (e) {
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// For CORS
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context.response.status = 200;
context.response.body = "";
}
});
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fsRouter.put("/:page(.*)", async (context) => {
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const pageName = context.params.page;
const localPath = `${pagesPath}/${pageName}.md`;
const existingPage = await exists(localPath);
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let dirName = path.dirname(localPath);
if (!(await exists(dirName))) {
await Deno.mkdir(dirName, {
recursive: true,
});
}
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let file;
try {
file = await Deno.create(localPath);
} catch (e) {
console.error("Error opening file for writing", localPath, e);
context.response.status = 500;
context.response.body = e.message;
return;
}
const result = context.request.body({ type: "reader" });
const text = await readAll(result.value);
file.write(text);
file.close();
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const stat = await Deno.stat(localPath);
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console.log("Wrote to", localPath);
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context.response.status = existingPage ? 200 : 201;
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context.response.headers.set("Last-Modified", "" + stat.mtime?.getTime());
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context.response.body = "OK";
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});
const app = new Application();
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app.use(
new Router()
.use(fsPrefix, fsRouter.routes(), fsRouter.allowedMethods())
.routes()
);
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app.use(async (context, next) => {
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try {
await context.send({
root: "../webapp/dist",
index: "index.html",
});
} catch {
next();
}
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});
await app.listen({ port: 2222 });