From 4e1f5fb539a733e6a70f6b7cf5c813e7c698d8bc Mon Sep 17 00:00:00 2001
From: ACTCD <101378590+ACTCD@users.noreply.github.com>
Date: Sun, 29 Sep 2024 19:30:50 +0800
Subject: [PATCH] refactor: various miscellaneous optimizations

---
 src/app/App.svelte                    | 15 ++++-----------
 src/app/global.d.ts                   | 20 +++++++++++---------
 xcode/App-Shared/ViewController.swift |  2 +-
 3 files changed, 16 insertions(+), 21 deletions(-)

diff --git a/src/app/App.svelte b/src/app/App.svelte
index 2f3a9433..1c6e2973 100644
--- a/src/app/App.svelte
+++ b/src/app/App.svelte
@@ -7,15 +7,8 @@
 
 	let directory = "init";
 
-	window.APP = {
-		show: () => {},
-		printVersion: (v, b) => {
-			version = v;
-			build = b;
-		},
-		printDirectory: (d) => {
-			directory = d;
-		},
+	window.webapp = {
+		updateDirectory: (newDir) => (directory = newDir),
 	};
 
 	async function initialize() {
@@ -25,11 +18,11 @@
 	}
 
 	function changeDirectory() {
-		window.webkit?.messageHandlers.controller.postMessage("CHANGE_DIRECTORY");
+		webkit.postMessage("CHANGE_DIRECTORY");
 	}
 
 	function openDirectory() {
-		window.webkit?.messageHandlers.controller.postMessage("OPEN_DIRECTORY");
+		webkit.postMessage("OPEN_DIRECTORY");
 	}
 </script>
 
diff --git a/src/app/global.d.ts b/src/app/global.d.ts
index 0b01b0d8..6a83a4d5 100644
--- a/src/app/global.d.ts
+++ b/src/app/global.d.ts
@@ -5,23 +5,25 @@
 
 declare global {
 	interface Window {
-		APP: {
-			show: (
-				platform: "ios" | "mac",
-				enabled: boolean,
-				useSettingsInsteadOfPreferences: boolean,
-			) => void;
-			printVersion: (v: string, b: string) => void;
-			printDirectory: (d: string) => void;
+		webapp: {
+			updateDirectory: (directory: string) => void;
 		};
 		webkit: {
 			messageHandlers: {
 				controller: {
-					postMessage: function;
+					postMessage: <T extends MessageBody>(
+						message: T,
+					) => Promise<MessageReply<T>>;
 				};
 			};
 		};
 	}
 }
 
+type MessageBody = "INIT" | "CHANGE_DIRECTORY" | "OPEN_DIRECTORY";
+
+type MessageReply<T> = T extends "INIT"
+	? { build: string; version: string; directory: string }
+	: void;
+
 export {};
diff --git a/xcode/App-Shared/ViewController.swift b/xcode/App-Shared/ViewController.swift
index 5fc72a59..ac0d457b 100644
--- a/xcode/App-Shared/ViewController.swift
+++ b/xcode/App-Shared/ViewController.swift
@@ -120,6 +120,6 @@ class ViewController: UIViewController, WKNavigationDelegate, WKScriptMessageHan
 
 	func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {
 		Preferences.scriptsDirectoryUrl = url
-		webView.evaluateJavaScript("APP.printDirectory('\(getCurrentScriptsDirectoryString())')")
+		webView.evaluateJavaScript("webapp.updateDirectory('\(getCurrentScriptsDirectoryString())')")
 	}
 }