1 files changed, 76 insertions, 0 deletions
diff --git a/src/zenserver/frontend/html/util/fetcher.js b/src/zenserver/frontend/html/util/fetcher.js
new file mode 100644
index 000000000..45f597404
--- /dev/null
+++ b/src/zenserver/frontend/html/util/fetcher.js
@@ -0,0 +1,76 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+"use strict";
+
+import { CbObject } from "./compactbinary.js"
+
+////////////////////////////////////////////////////////////////////////////////
+export class Fetcher
+{
+	constructor()
+	{
+		this._resource = "";
+		this._query = {};
+	}
+
+	resource(...parts)
+	{
+		var value = parts.join("/");
+		if (!value.startsWith("/"))
+			value= "/" + value;
+		this._resource = value;
+		return this;
+	}
+
+	param(name, value)
+	{
+		this._query[name] = value;
+		return this;
+	}
+
+	async json()
+	{
+		const response = await this._get("application/json");
+		return response ? (await response.json()) : {};
+	}
+
+	async cbo()
+	{
+		const response = await this._get("application/x-ue-cb");
+		if (!response)
+			return null;
+
+		const buffer = await response.arrayBuffer();
+		const data = new Uint8Array(buffer);
+		return new CbObject(data);
+	}
+
+	async delete()
+	{
+		const resource = this._build_uri();
+		const response = await fetch(resource, { "method" : "DELETE" });
+	}
+
+	_build_uri()
+	{
+		var suffix = "";
+		for (var key in this._query)
+		{
+			suffix += suffix ? "&" : "?";
+			suffix += key + "=" + this._query[key];
+		}
+		return this._resource + suffix;
+	}
+
+	async _get(accept="*")
+	{
+		const resource = this._build_uri();
+		const response = await fetch(resource, {
+			"method" : "GET",
+			"headers" : { "Accept": accept },
+		});
+
+		if (response.status >= 200 && response.status <= 299)
+			return response;
+	}
+}