package com.nispok.snackbar;

import android.app.Activity;
import android.support.annotation.NonNull;
import android.util.Log;

/**
 * A handler for multiple {@link Snackbar}s
 */
public class SnackbarManager {

    private static final String TAG = SnackbarManager.class.getSimpleName();

    private static Snackbar currentSnackbar;

    private SnackbarManager() {
    }

    /**
     * Displays a {@link com.nispok.snackbar.Snackbar} in the current {@link Activity}, dismissing
     * the current Snackbar being displayed, if any. Note that the Activity will be obtained from
     * the Snackbar's {@link android.content.Context}. If the Snackbar was created with
     * {@link android.app.Activity#getApplicationContext()} then you must explicitly pass the target
     * Activity using {@link #show(Snackbar, android.app.Activity)}
     *
     * @param snackbar instance of {@link com.nispok.snackbar.Snackbar} to display
     */
    public static void show(@NonNull Snackbar snackbar) {
        try {
            show(snackbar, (Activity) snackbar.getContext());
        } catch (ClassCastException e) {
            Log.e(TAG, "Couldn't get Activity from the Snackbar's Context. Try calling " +
                    "#show(Snackbar, Activity) instead", e);
        }
    }

    /**
     * Displays a {@link com.nispok.snackbar.Snackbar} in the current {@link Activity}, dismissing
     * the current Snackbar being displayed, if any
     *
     * @param snackbar instance of {@link com.nispok.snackbar.Snackbar} to display
     * @param activity target {@link Activity} to display the Snackbar
     */
    public static void show(@NonNull final Snackbar snackbar, @NonNull final Activity activity) {
        if (currentSnackbar != null) {
            currentSnackbar.postDelayed(new Runnable() {
                @Override
                public void run() {
                    currentSnackbar = snackbar;
                    currentSnackbar.show(activity);
                }
            }, activity.getResources().getInteger(R.integer.sb__anim_duration));

            currentSnackbar.dismiss();
        }
    }

    /**
     * Dismisses the {@link com.nispok.snackbar.Snackbar} shown by this manager.
     */
    public static void dismiss() {
        if (currentSnackbar != null) {
            currentSnackbar.dismiss();
        }
    }
}
