whatewer tracker-plpugin ideas

tracker/tracker/src/main/plugin.ts

@@ -0,0 +1,56 @@
+import type Message from './app/messages.gen.js'
+import type App from './app/index.js'
+//import { PluginPayload } from './app/messages.gen.js'
+
+// TODO: sendState(name, action, state) for state plugins;
+
+export interface PluginDescription {
+  name: string
+  version: string
+  requiredTrackerVersion: string
+  onStart: () => void
+  onStop: () => void
+  onNode: (node: Node, id: number) => void
+  onContext: (context: typeof globalThis) => void
+}
+
+type PluginWrapper = (app: AppForPlugins) => Partial<PluginDescription>
+
+interface AppForPlugins {
+  sendMessage(m: Message): void
+  send(name: string, payload: Object): void
+  // ...
+}
+
+export function applyPlugin<T>(app: App, pluginWrapper: PluginWrapper) {
+  function send(name: string, second?: Object) {
+    const paload = app.safe(() => JSON.stringify(second))() || ''
+    // app.send(PluginPayload(name, payload)) // send PluginPayload message
+    return
+  }
+  function sendMessage(msg: Message) {
+    app.send(msg)
+  }
+  const plugin = pluginWrapper({
+    send,
+    sendMessage,
+    //...
+  })
+
+  if (plugin.onStart) {
+    app.attachStartCallback(plugin.onStart)
+  }
+  if (plugin.onStop) {
+    app.attachStopCallback(plugin.onStop)
+  }
+  if (plugin.onNode) {
+    app.nodes.attachNodeCallback((node) => {
+      const id = app.nodes.getID(node)
+      if (id !== undefined) {
+        plugin.onNode(node, id)
+      }
+    })
+  }
+
+  return plugin
+}