fix config stuff

src/controller/index.ts

@@ -0,0 +1,98 @@
+import IDBMap from "@webreflection/idb-map";
+import { ScramjetConfig } from "../types";
+import { Codec } from "../codecs";
+
+export class ScramjetController {
+	config: ScramjetConfig;
+	private store: IDBMap;
+	codec: Codec;
+
+	constructor(config: ScramjetConfig) {
+		const defaultConfig = {
+			prefix: "/scramjet/",
+			codec: "plain",
+			wrapfn: "$scramjet$wrap",
+			trysetfn: "$scramjet$tryset",
+			importfn: "$scramjet$import",
+			rewritefn: "$scramjet$rewrite",
+			shared: "/scramjet.shared.js",
+			worker: "/scramjet.worker.js",
+			thread: "/scramjet.thread.js",
+			client: "/scramjet.client.js",
+			codecs: "/scramjet.codecs.js",
+		};
+
+		this.config = Object.assign({}, defaultConfig, config);
+	}
+
+	async init(serviceWorkerPath: string): Promise<ServiceWorkerRegistration> {
+		await import(/* webpackIgnore: true */ this.config.codecs);
+		this.codec = self.$scramjet.codecs[this.config.codec];
+
+		this.store = new IDBMap("config", {
+			prefix: "scramjet",
+		});
+		await this.#saveConfig();
+
+		const reg = await navigator.serviceWorker.register(serviceWorkerPath, {
+			scope: this.config.prefix,
+		});
+		dbg.log("service worker registered");
+
+		return reg;
+	}
+
+	createFrame(frame?: HTMLIFrameElement): ScramjetFrame {
+		if (!frame) {
+			frame = document.createElement("iframe");
+		}
+
+		return new ScramjetFrame(this, frame);
+	}
+
+	encodeUrl(url: string | URL): string {
+		if (url instanceof URL) url = url.toString();
+
+		return this.config.prefix + this.codec.encode(url);
+	}
+
+	async #saveConfig() {
+		this.store.set("config", this.config);
+	}
+
+	async modifyConfig(config: ScramjetConfig) {
+		this.config = Object.assign({}, this.config, config);
+		this.codec = self.$scramjet.codecs[this.config.codec];
+
+		await this.#saveConfig();
+	}
+}
+
+class ScramjetFrame extends EventTarget {
+	static SCRAMJETFRAME = Symbol.for("scramjet frame handle");
+	constructor(
+		private controller: ScramjetController,
+		public frame: HTMLIFrameElement
+	) {
+		super();
+		frame[ScramjetFrame.SCRAMJETFRAME] = this;
+	}
+
+	go(url: string | URL) {
+		if (url instanceof URL) url = url.toString();
+
+		dbg.log("navigated to", url);
+
+		this.frame.src = this.controller.encodeUrl(url);
+	}
+
+	back() {
+		this.frame.contentWindow?.history.back();
+	}
+
+	forward() {
+		this.frame.contentWindow?.history.forward();
+	}
+}
+
+window.ScramjetController = ScramjetController;