Add 'packages/backend/' from commit 'acce648ee5e7e3a3006451e637c0db654820cc48'

git-subtree-dir: packages/backend
git-subtree-mainline: d0babd62af
git-subtree-split: acce648ee5

packages/backend/src/index.ts

@@ -0,0 +1,108 @@
+import { db, testDB } from "./db/client";
+import { User } from "./db/schema";
+import { routes } from "./routes";
+import { createDemoData } from "./utils";
+
+const DEV = process.argv.find((arg) => ["--dev", "--developer", "-d"].includes(arg.toLowerCase())) != null;
+const PORT = process.argv.find((arg) => arg.toLowerCase().startsWith("--port="))?.split("=")[1] || 0;
+
+type RouteHandler<T extends Request = Request> = (req: T) => Response | Promise<Response>;
+
+const CORS_ALLOWED_ORIGINS = (process.env.CORS_ORIGIN ?? "http://localhost:1420")
+    .split(",")
+    .map((origin) => origin.trim())
+    .filter(Boolean);
+
+const CORS_ALLOW_METHODS = process.env.CORS_ALLOW_METHODS ?? "GET,POST,PUT,PATCH,DELETE,OPTIONS";
+const CORS_ALLOW_HEADERS_DEFAULT = process.env.CORS_ALLOW_HEADERS ?? "Content-Type, Authorization";
+const CORS_MAX_AGE = process.env.CORS_MAX_AGE ?? "86400";
+
+const getCorsAllowOrigin = (req: Request) => {
+    const requestOrigin = req.headers.get("Origin");
+    if (!requestOrigin) {
+        return "*";
+    }
+
+    if (CORS_ALLOWED_ORIGINS.includes("*")) {
+        return "*";
+    }
+
+    if (CORS_ALLOWED_ORIGINS.includes(requestOrigin)) {
+        return requestOrigin;
+    }
+
+    return null;
+};
+
+const buildCorsHeaders = (req: Request) => {
+    const headers = new Headers();
+
+    const allowOrigin = getCorsAllowOrigin(req);
+    if (allowOrigin) {
+        headers.set("Access-Control-Allow-Origin", allowOrigin);
+        if (allowOrigin !== "*") {
+            headers.set("Vary", "Origin");
+        }
+    }
+
+    headers.set("Access-Control-Allow-Methods", CORS_ALLOW_METHODS);
+
+    const requestedHeaders = req.headers.get("Access-Control-Request-Headers");
+    headers.set("Access-Control-Allow-Headers", requestedHeaders || CORS_ALLOW_HEADERS_DEFAULT);
+
+    headers.set("Access-Control-Max-Age", CORS_MAX_AGE);
+
+    return headers;
+};
+
+const withCors = <T extends Request>(handler: RouteHandler<T>): RouteHandler<T> => {
+    return async (req: T) => {
+        const corsHeaders = buildCorsHeaders(req);
+
+        if (req.method === "OPTIONS") {
+            return new Response(null, { status: 204, headers: corsHeaders });
+        }
+
+        const res = await handler(req);
+        const wrapped = new Response(res.body, res);
+
+        corsHeaders.forEach((value, key) => {
+            wrapped.headers.set(key, value);
+        });
+
+        return wrapped;
+    };
+};
+
+const main = async () => {
+    const server = Bun.serve({
+        port: Number(PORT),
+        routes: {
+            "/": withCors(() => new Response(`title: eussi\ndev-mode: ${DEV}\nport: ${PORT}`)),
+
+            "/issue/create": withCors(routes.issueCreate),
+            "/issue/update": withCors(routes.issueUpdate),
+            "/issue/delete": withCors(routes.issueDelete),
+            "/issues/:projectBlob": withCors(routes.issuesInProject),
+            "/issues/all": withCors(routes.issues),
+
+            "/project/create": withCors(routes.projectCreate),
+            "/project/update": withCors(routes.projectUpdate),
+            "/project/delete": withCors(routes.projectDelete),
+        },
+    });
+
+    console.log(`eussi (issue server) listening on ${server.url}`);
+    await testDB();
+
+    if (DEV) {
+        const users = await db.select().from(User);
+        if (users.length === 0) {
+            console.log("creating demo data...");
+            await createDemoData();
+            console.log("demo data created");
+        }
+    }
+};
+
+main();