Add script to redirect legacy urls

scripts/legacyRedirector.ts

@@ -0,0 +1,45 @@
+import * as http from "node:http"
+
+/**
+ * Redirect people from
+ * "mapcomplete.osm.be/path?query=parameter#id" to "mapcomplete.org/path?query=parameter#id"
+ */
+const PORT = 8080
+const CORS = "http://localhost:1234,https://mapcomplete.org,https://dev.mapcomplete.org"
+
+async function redirect(req: http.IncomingMessage, res: http.ServerResponse) {
+    try {
+        console.log(
+            req.method + " " + req.url,
+            "from:",
+            req.headers.origin,
+            new Date().toISOString()
+        )
+        res.setHeader(
+            "Access-Control-Allow-Headers",
+            "Origin, X-Requested-With, Content-Type, Accept"
+        )
+        res.setHeader("Access-Control-Allow-Origin", req.headers.origin ?? "*")
+        if (req.method === "OPTIONS") {
+            res.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE, UPDATE")
+            res.writeHead(204, { "Content-Type": "text/html" })
+            res.end()
+            return
+        }
+
+        console.log("Request url:", req.url)
+        const oldUrl = new URL("https://127.0.0.1:8080" + req.url)
+        const newUrl = "https://mapcomplete.org" + oldUrl.pathname + oldUrl.search + oldUrl.hash
+        res.writeHead(301, { "Content-Type": "text/html", Location: newUrl })
+        res.write("Moved permantently")
+        res.end()
+    } catch (e) {
+        console.error(e)
+    }
+}
+
+http.createServer(redirect).listen(PORT)
+
+console.log(
+    `Server started at http://127.0.0.1:${PORT}/, the time is ${new Date().toISOString()}, version from package.json is`
+)