feat: add Safari extension for sourcehut deep linksv3.4.0

1 files changed, 115 insertions, 0 deletions

diff --git a/HutchSafariExtension/Resources/background.js b/HutchSafariExtension/Resources/background.js
new file mode 100644
index 0000000..81bf8b6
--- /dev/null
+++ b/HutchSafariExtension/Resources/background.js
@@ -0,0 +1,115 @@
+const supportedHosts = new Set([
+  "git.sr.ht",
+  "hg.sr.ht",
+  "todo.sr.ht",
+  "builds.sr.ht",
+  "lists.sr.ht",
+  "meta.sr.ht",
+  "sr.ht",
+]);
+
+const browserAPI = globalThis.browser ?? globalThis.chrome;
+
+function isOwnerRootPath(path) {
+  const components = path.split("/").filter(Boolean);
+  return components.length === 1 && components[0].startsWith("~");
+}
+
+function normalizedPath(pathname) {
+  return pathname.split("/").filter(Boolean).join("/");
+}
+
+function deepLinkPath(hostname, path) {
+  const components = path.split("/").filter(Boolean);
+  if (
+    hostname === "sr.ht" &&
+    components.length === 2 &&
+    components[0] === "projects" &&
+    components[1].startsWith("~")
+  ) {
+    return components[1];
+  }
+
+  return path;
+}
+
+function deepLinkService(hostname, path) {
+  if (isOwnerRootPath(path)) {
+    return "lookup";
+  }
+
+  switch (hostname) {
+    case "git.sr.ht":
+      return "git";
+    case "hg.sr.ht":
+      return "hg";
+    case "todo.sr.ht":
+      return "todo";
+    case "builds.sr.ht":
+      return "builds";
+    case "lists.sr.ht":
+      return "lists";
+    default:
+      return "lookup";
+  }
+}
+
+function hutchDeepLinkFor(rawURL) {
+  let url;
+  try {
+    url = new URL(rawURL);
+  } catch {
+    return null;
+  }
+
+  if (url.protocol !== "https:" || !supportedHosts.has(url.hostname)) {
+    return null;
+  }
+
+  const path = deepLinkPath(url.hostname, normalizedPath(url.pathname));
+  const service = deepLinkService(url.hostname, path);
+  return `hutch://${service}${path ? `/${path}` : ""}${url.search}${url.hash}`;
+}
+
+function showUnsupportedMessage(tabId) {
+  if (!tabId) {
+    return;
+  }
+
+  const message = "Open in Hutch supports git, hg, todo, builds, lists, meta, and sr.ht pages.";
+
+  if (browserAPI?.scripting?.executeScript) {
+    browserAPI.scripting.executeScript({
+      target: { tabId },
+      func: (text) => {
+        window.alert(text);
+      },
+      args: [message],
+    });
+    return;
+  }
+
+  browserAPI?.tabs?.sendMessage?.(tabId, { type: "hutchUnsupportedPage", message });
+}
+
+function openURL(tabId, url) {
+  if (browserAPI?.tabs?.update && tabId) {
+    browserAPI.tabs.update(tabId, { url });
+    return;
+  }
+
+  if (browserAPI?.tabs?.create) {
+    browserAPI.tabs.create({ url });
+  }
+}
+
+browserAPI.action.onClicked.addListener((tab) => {
+  const hutchURL = tab?.url ? hutchDeepLinkFor(tab.url) : null;
+  if (!hutchURL) {
+    showUnsupportedMessage(tab?.id);
+    return;
+  }
+
+  console.debug("[Hutch] Opening deep link", { sourceURL: tab.url, hutchURL });
+  openURL(tab.id, hutchURL);
+});