import { useEffect } from "react";
import { Platform } from "react-native";
import { telemetry } from "./telemetry";
const runtimeFlagsTelemetry = telemetry.scope("runtime.flags");
import {
  startAppLifecycleCrashSentinel,
  stopAppLifecycleCrashSentinel,
} from "./appLifecycleCrashSentinel";

type AppLifecycleObservabilityOptions = {
  nativeScreensMode: string;
  rootTabSceneMode: string;
};

/**
 * Installs app-wide runtime diagnostics once at the root of the application.
 * The navigation and provider tree only supplies the runtime mode values.
 */
export function useAppLifecycleObservability({
  nativeScreensMode,
  rootTabSceneMode,
}: AppLifecycleObservabilityOptions) {
  useEffect(() => {
    const platform = Platform.OS;
    telemetry.tag("native_screens_mode", nativeScreensMode);
    telemetry.tag("root_tab_scene_mode", rootTabSceneMode);
    telemetry.context("runtime_navigation_flags", {
      platform,
      nativeScreensMode,
      rootTabSceneMode,
    });
    runtimeFlagsTelemetry.breadcrumb({
      message: "runtime navigation flags applied",
      data: {
        platform,
        nativeScreensMode,
        rootTabSceneMode,
      },
    });
    void startAppLifecycleCrashSentinel({ nativeScreensMode });
    return () => {
      stopAppLifecycleCrashSentinel();
    };
  }, [nativeScreensMode, rootTabSceneMode]);
}