initialized extension with basic functionality

background.js

@@ -0,0 +1,73 @@
+const HIGHLIGHT_JS = "vendor/highlightjs/highlight.min.js";
+
+chrome.tabs.onUpdated.addListener(async (tabId, changeInfo, tab) => {
+  if (changeInfo.status !== "complete" || !tab?.id) return;
+
+  try {
+    const { autoFormat } = await chrome.storage.sync.get({ autoFormat: false });
+    if (!autoFormat) return;
+
+    // Haben wir Host-Permissions?
+    const have = await chrome.permissions.contains({ origins: ["<all_urls>"] });
+    if (!have) return;
+
+    // Nur im aktiven Tab (du wolltest Beschränkung auf aktiven Tab für Auto)
+    const active = tab.active === true;
+    if (!active) return;
+
+    console.log("[bg] auto inject on updated tab", tabId, tab.url);
+    await chrome.scripting.executeScript({
+      target: { tabId },
+      files: [HIGHLIGHT_JS, "format.js", "content.js"]
+    });
+  } catch (e) {
+    console.error("[bg] onUpdated error", e);
+  }
+});
+
+chrome.runtime.onInstalled.addListener(() => {
+  console.log("[bg] onInstalled");
+  chrome.contextMenus.create({
+    id: "manual-format",
+    title: "JSON jetzt formatieren",
+    contexts: ["page"]
+  });
+  chrome.contextMenus.create({
+    id: "open-options",
+    title: "Einstellungen",
+    contexts: ["action"]
+  });
+});
+
+async function inject(tabId) {
+  try {
+    console.log("[bg] injecting into tab", tabId);
+    await chrome.scripting.executeScript({
+      target: { tabId },
+      func: () => {
+        window.__forceManualFormat = true;
+      }
+    });
+    await chrome.scripting.executeScript({
+      target: { tabId },
+      files: [HIGHLIGHT_JS, "format.js", "content.js"]
+    });
+    console.log("[bg] injection done");
+  } catch (e) {
+    console.error("[bg] injection error", e);
+  }
+}
+
+chrome.contextMenus.onClicked.addListener((info, tab) => {
+  if (info.menuItemId === "open-options") {
+    chrome.runtime.openOptionsPage();
+    return;
+  }
+  if (info.menuItemId === "manual-format" && tab?.id) {
+    inject(tab.id);
+  }
+});
+
+chrome.action.onClicked.addListener((tab) => {
+  if (tab?.id) inject(tab.id);
+});