// src/hooks/useActiveAppTracker.ts
import { useEffect, useRef } from "react";
import { useDispatch } from "react-redux";
import { setActiveWindow, WindowInfo } from "../store/windowSlice";

export const useActiveAppTracker = (
  isTracking: boolean,
  projectId: string,
  projectName: string
) => {
  const dispatch = useDispatch();
  const lastActiveRef = useRef<WindowInfo | null>(null);

  useEffect(() => {
    if (!isTracking || !projectId) {
      console.log(" Tracking not active or project not selected");
      return;
    }

    console.log(` Tracking started for project: ${projectName}`);

    const fetchActiveApp = async () => {
      try {
        const details = (await window.electron.getActiveAppDetails()) as WindowInfo;
        if (!details || !details.id) return;

        const prev = lastActiveRef.current;
        const hasChanged =
          !prev ||
          prev.title !== details.title ||
          prev.owner.processId !== details.owner.processId;

        if (hasChanged) {
          console.log("🪟 Window changed:", details.title);
          dispatch(setActiveWindow({ window: details, projectId, projectName }));
          lastActiveRef.current = details;
        }
      } catch (error) {
        console.error("❌ Failed to fetch active app:", error);
      }
    };

    fetchActiveApp();
    const intervalId = setInterval(fetchActiveApp, 5000);

    return () => {
      console.log("🛑 Stopping active window tracker");
      clearInterval(intervalId);
    };
  }, [isTracking, dispatch, projectId, projectName]);
};