feat: add request parsing related interfaces

src/ldp/http/BodyParser.ts

@@ -0,0 +1,5 @@
+import { AsyncHandler } from '../../util/AsyncHandler';
+import { HttpRequest } from '../../server/HttpRequest';
+import { Representation } from '../representation/Representation';
+
+export abstract class BodyParser extends AsyncHandler<HttpRequest, Representation> {}

src/ldp/http/PreferenceParser.ts

@@ -0,0 +1,5 @@
+import { AsyncHandler } from '../../util/AsyncHandler';
+import { HttpRequest } from '../../server/HttpRequest';
+import { RepresentationPreferences } from '../representation/RepresentationPreferences';
+
+export abstract class PreferenceParser extends AsyncHandler<HttpRequest, RepresentationPreferences> {}

src/ldp/http/TargetExtractor.ts

@@ -0,0 +1,5 @@
+import { AsyncHandler } from '../../util/AsyncHandler';
+import { HttpRequest } from '../../server/HttpRequest';
+import { ResourceIdentifier } from '../representation/ResourceIdentifier';
+
+export abstract class TargetExtractor extends AsyncHandler<HttpRequest, ResourceIdentifier> {}

src/ldp/representation/RepresentationPreference.ts

@@ -0,0 +1,13 @@
+/**
+ * Represents a single preference in a request.
+ */
+export interface RepresentationPreference {
+  /**
+   * The actual preference value.
+   */
+  value: string;
+  /**
+   * How important this preference is in a value going from 0 to 1.
+   */
+  weight?: number;
+}

src/ldp/representation/RepresentationPreferences.ts

@@ -1,4 +1,12 @@
+import { RepresentationPreference } from './RepresentationPreference';
+
 /**
  * Contains the preferences of which kind of representation is requested.
  */
-export interface RepresentationPreferences {}
+export interface RepresentationPreferences {
+  type?: RepresentationPreference[];
+  charset?: RepresentationPreference[];
+  datetime?: RepresentationPreference[];
+  encoding?: RepresentationPreference[];
+  language?: RepresentationPreference[];
+}

src/ldp/representation/ResourceIdentifier.ts

@@ -1,4 +1,9 @@
 /**
  * The unique identifier of a resource.
  */
-export interface ResourceIdentifier {}
+export interface ResourceIdentifier {
+  /**
+   * Path to the relevant resource. Usually this would be an URL.
+   */
+  path: string;
+}