enhancement(extollo/extollo#2): add kernel module for parsing request body contents, uploading files

src/http/lifecycle/Request.ts

@@ -1,5 +1,5 @@
 import {Injectable, ScopedContainer, Container} from "@extollo/di"
-import {infer} from "@extollo/util"
+import {infer, UniversalPath} from "@extollo/util"
 import {IncomingMessage, ServerResponse} from "http"
 import {HTTPCookieJar} from "../kernel/HTTPCookieJar";
 import {TLSSocket} from "tls";
@@ -84,6 +84,12 @@ export class Request extends ScopedContainer {
     /** The media types accepted by the client. */
     public readonly mediaTypes: string[];
 
+    /** Input parsed from the request */
+    public readonly parsedInput: {[key: string]: any} = {}
+
+    /** Files parsed from the request. */
+    public readonly uploadedFiles: {[key: string]: UniversalPath} = {}
+
     constructor(
         /** The native Node.js request. */
         protected clientRequest: IncomingMessage,
@@ -162,11 +168,22 @@ export class Request extends ScopedContainer {
      * @param key
      */
     public input(key: string) {
+        if ( key in this.parsedInput ) {
+            return this.parsedInput[key]
+        }
+
         if ( key in this.query ) {
             return this.query[key]
         }
     }
 
+    /**
+     * Get the UniversalPath instance for a file uploaded in the given field on the request.
+     */
+    public file(key: string): UniversalPath | undefined {
+        return this.uploadedFiles[key]
+    }
+
     /**
      * Returns true if the request accepts the given media type.
      * @param type - a mimetype, or the short forms json, xml, or html