add codes

src/background.js

@@ -0,0 +1,59 @@
+import browser from "webextension-polyfill";
+import {
+  MSG_FETCH,
+  MSG_FETCH_LIMIT,
+  DEFAULT_SETTING,
+  DEFAULT_RULES,
+  STOKEY_SETTING,
+  STOKEY_RULES,
+  CACHE_NAME,
+} from "./config";
+import { fetchData, setFetchLimit } from "./libs/fetch";
+import storage from "./libs/storage";
+import { getSetting } from "./libs";
+
+/**
+ * 插件安装
+ */
+browser.runtime.onInstalled.addListener(() => {
+  console.log("onInstalled");
+  storage.trySetObj(STOKEY_SETTING, DEFAULT_SETTING);
+  storage.trySetObj(STOKEY_RULES, DEFAULT_RULES);
+});
+
+/**
+ * 浏览器启动
+ */
+browser.runtime.onStartup.addListener(async () => {
+  console.log("onStartup");
+  const { clearCache } = await getSetting();
+  if (clearCache) {
+    caches.delete(CACHE_NAME);
+  }
+});
+
+/**
+ * 监听消息
+ */
+browser.runtime.onMessage.addListener(
+  ({ action, args }, sender, sendResponse) => {
+    switch (action) {
+      case MSG_FETCH:
+        fetchData(args.input, args.init)
+          .then((data) => {
+            sendResponse({ data });
+          })
+          .catch((error) => {
+            sendResponse({ error: error.message });
+          });
+        break;
+      case MSG_FETCH_LIMIT:
+        setFetchLimit(args.limit);
+        sendResponse({ data: "ok" });
+        break;
+      default:
+        sendResponse({ error: `message action is unavailable: ${action}` });
+    }
+    return true;
+  }
+);