feat: add additional supported interfaces

This includes the relevant auth headers and a simplification of several others.

src/ldp/http/Patch.ts

@@ -1,4 +1,6 @@
+import { Representation } from './Representation';
+
 /**
  * Represents the changes needed for a PATCH request.
  */
-export interface Patch {}
+export interface Patch extends Representation {}

src/ldp/http/RequestParser.ts

@@ -0,0 +1,8 @@
+import { AsyncHandler } from '../../util/AsyncHandler';
+import { HttpRequest } from '../../server/HttpRequest';
+import { Operation } from '../operations/Operation';
+
+/**
+ * Converts an incoming HttpRequest to an Operation.
+ */
+export type RequestParser = AsyncHandler<HttpRequest, Operation>;

src/ldp/operations/OperationHandler.ts

@@ -1,21 +1,7 @@
+import { AsyncHandler } from '../../util/AsyncHandler';
 import { Operation } from './Operation';
 
 /**
  * Handler for a specific operation type.
  */
-export interface OperationHandler {
-  /**
-   * Checks if the handler supports the given operation.
-   * @param operation - The input operation.
-   *
-   * @returns A promise resolving to a boolean indicating if this handler supports the operation.
-   */
-  canHandle: (operation: Operation) => Promise<boolean>;
-  /**
-   * Handles the given operation.
-   * @param operation - The input operation.
-   *
-   * @returns A promise resolving when the operation is handled.
-   */
-  handle: (operation: Operation) => Promise<void>;
-}
+export type OperationHandler = AsyncHandler<Operation>;

src/ldp/permissions/PermissionSet.ts

@@ -0,0 +1,9 @@
+/**
+ * A data interface indicating which permissions are allowed (based on the context).
+ */
+export interface PermissionSet {
+  read: boolean;
+  append: boolean;
+  write: boolean;
+  delete: boolean;
+}

src/ldp/permissions/PermissionsExtractor.ts

@@ -0,0 +1,8 @@
+import { AsyncHandler } from '../../util/AsyncHandler';
+import { Operation } from '../operations/Operation';
+import { PermissionSet } from './PermissionSet';
+
+/**
+ * Verifies which permissions are requested on a given {@link Operation}.
+ */
+export type PermissionsExtractor = AsyncHandler<Operation, PermissionSet>;