From 49a489d53283f5c7a0805f5a5f33b5cf2d2d72fc Mon Sep 17 00:00:00 2001
From: Nikita Karamov <me@kytta.dev>
Date: Fri, 17 Mar 2023 23:08:15 +0100
Subject: [PATCH] Re-implement pre-filling instances

---
 src/components/instance-select.astro | 22 ++++++++++++++++++++++
 src/util.ts                          |  6 ++++++
 2 files changed, 28 insertions(+)
 create mode 100644 src/util.ts

diff --git a/src/components/instance-select.astro b/src/components/instance-select.astro
index cbd1f4c..29d3e66 100644
--- a/src/components/instance-select.astro
+++ b/src/components/instance-select.astro
@@ -59,3 +59,25 @@ try {
 		}
 	}
 </style>
+
+<script>
+	import { extractHost } from "../util";
+
+	const LOCAL_STORAGE_KEY = "recentInstances";
+
+	const $instance: HTMLInputElement = document.querySelector("#instance");
+
+	const getSavedInstances = (): Array<string> => {
+		const storageValue = window.localStorage.getItem(LOCAL_STORAGE_KEY);
+		if (!storageValue) {
+			return [];
+		}
+
+		return JSON.parse(storageValue);
+	};
+
+	const savedInstance = getSavedInstances()[0];
+	if (savedInstance) {
+		$instance.value = extractHost(savedInstance);
+	}
+</script>
diff --git a/src/util.ts b/src/util.ts
new file mode 100644
index 0000000..74e4395
--- /dev/null
+++ b/src/util.ts
@@ -0,0 +1,6 @@
+export const extractHost = (url: string): string => {
+	if (!(url.startsWith("https://") || url.startsWith("http://"))) {
+		url = "https://" + url;
+	}
+	return new URL(url).host;
+};