commit

utils/autoReloadClients/backgroundClient.js

@@ -0,0 +1,66 @@
+const querystring = require("querystring");
+
+const logger = (msg) => {
+  console.log(`[BGC] ${msg}`);
+};
+
+logger("background client up.");
+
+logger("connecting to SSE service...");
+const port = querystring.parse(__resourceQuery.slice(1)).port;
+const es = new EventSource(`http://localhost:${port}/__server_sent_events__`);
+
+es.addEventListener(
+  "open",
+  () => {
+    logger("SSE service connected!");
+  },
+  false
+);
+
+es.addEventListener(
+  "error",
+  (event) => {
+    if (event.target.readyState === 0) {
+      console.error("[BGC] you need to open devServer first!");
+    } else {
+      console.error(event);
+    }
+  },
+  false
+);
+
+es.addEventListener("background-updated", () => {
+  logger("received 'background-updated' event from SSE service.");
+  logger("extension will reload to reload background...");
+  chrome.runtime.reload(); // reload extension to reload background.
+});
+
+es.addEventListener(
+  "content-scripts-updated",
+  () => {
+    logger("received 'content-scripts-updated' event from SSE service.");
+    chrome.tabs.query({}, (tabs) => {
+      tabs.forEach((tab) => {
+        chrome.tabs.sendMessage(
+          tab.id,
+          {
+            from: "backgroundClient",
+            action: "reload-yourself",
+          },
+          (res) => {
+            if (chrome.runtime.lastError && !res) return;
+
+            const { from, action } = res;
+            if (from === "contentScriptClient" && action === "yes-sir") {
+              es.close();
+              logger("extension will reload to update content scripts...");
+              chrome.runtime.reload();
+            }
+          }
+        );
+      });
+    });
+  },
+  false
+);