Change event pattern for custom HTTP endpoints

server/http_server.ts

@@ -221,10 +221,11 @@ export class HttpServer {
       }
 
       try {
+        const path = url.pathname.slice(2); // Remove the /_
         const responses: EndpointResponse[] = await spaceServer.serverSystem
-          .eventHook.dispatchEvent("http:request", {
+          .eventHook.dispatchEvent(`http:request:${path}`, {
             fullPath: url.pathname,
-            path: url.pathname.slice(2),
+            path,
             method: req.method,
             body: await req.text(),
             query: Object.fromEntries(
@@ -233,9 +234,15 @@ export class HttpServer {
             headers: req.header(),
           } as EndpointRequest);
         if (responses.length === 0) {
-          return ctx.text("No response from event hook", 500);
+          return ctx.text(
+            "No custom endpoint handler is handling this path",
+            404,
+          );
         } else if (responses.length > 1) {
-          return ctx.text("Multiple responses from event hook", 500);
+          return ctx.text(
+            "Multiple endpoint handlers are handling this path, this is not supported",
+            500,
+          );
         }
         const response = responses[0];
         if (response.headers) {

website/Space Script.md

@@ -136,12 +136,12 @@ silverbullet.registerEventListener({name: "task:stateChange"}, async (event) =>
 ## Custom HTTP endpoints
 Using the `registerEventListener` mechanism it is possible to expose custom HTTP endpoint on your SilverBullet’s server under the `/_/` prefix.
 
-Whenever a HTTP request is sent to your SilverBullet server under this prefix, for instance `https://notes.myserver.com/_/hello` a `http:request` event is emitted. If a handler responds to it, this response will be used as the HTTP response.
+Whenever a HTTP request is sent to your SilverBullet server under this prefix, for instance `https://notes.myserver.com/_/hello` a `http:request:/hello` event is emitted. If a handler responds to it, this response will be used as the HTTP response.
 
 > **warning** Warning
 > Custom HTTP endpoints are not authenticated. If you want to add authentication, you have to do this manually, e.g. by checking for an “Authorization” header in your code.
 
-For the `http:request` the `data` key takes the shape of a EndpointRequest object, which in TypeScript is defined as follows:
+For `http:request:*` events, the `data` key takes the shape of a EndpointRequest object, which in TypeScript is defined as follows:
 
 ```typescript
 type EndpointRequest = {
@@ -175,19 +175,18 @@ type EndpointResponse = {
 
 ### Example
 ```space-script
-silverbullet.registerEventListener({name: "http:request"}, (event) => {
+silverbullet.registerEventListener({name: "http:request:/echo"}, (event) => {
   const req = event.data;
-  if(req.path === "/echo") {
-    // Simply echo back the request
-    return {
-      body: JSON.stringify(req, null, 2)
-    };
-  }
+  // Simply echo back the request
+  return {
+    body: JSON.stringify(req, null, 2)
+  };
 });
 ```
 
 You can try it out here: https://silverbullet.md/_/echo
 
+**Note:** Since event names support wildcards, you can write event listeners to prefixes as well, e.g. `http:request:/something/*`.
 
 # Custom attribute extractors
 SilverBullet indexes various types of content as [[Objects]]. There are various ways to define [[Attributes]] for these objects, such as the [attribute: my value] syntax. However, using space script you can write your own code to extract attribute values not natively supported using the registerAttributeExtractor API.