Pfthb

I am trying to make WordPress options.php save the data I have on the settings page I have created. The error I get is, "Error: Options Page Not Found"

<?php
/**
 * @package 
 * @version 1.6
 */
/*
Plugin Name: 
Plugin URI: 
Description: 
Author: Fahad Uddin
Version: 1.6
Author URI: 
Text Domain: 
*/

if ( is_admin() ) // admin actions
 //add_action( 'admin_menu', 'add_mymenu' );
 add_action( 'admin_init', 'plugin_options_validate' );
 else 
 // non-admin enqueues, actions, and filters

?>
<style>
.ffs_valid
 height: 15px;
 border-radius: 10px;
 width: 15px;
 display: inline-block;
 float: left;
 margin: 4px;
 background: green;

.ffs_invalid
 height: 15px;
 border-radius: 10px;
 width: 15px;
 display: inline-block;
 float: left;
 margin: 4px;
 background: red;

.ffs_pause
 height: 15px;
 border-radius: 10px;
 width: 15px;
 display: inline-block;
 float: left;
 margin: 4px;
 background: #dddddd;

td, th 
 border: 1px solid #dddddd;
 text-align: left;
 padding: 8px;

</style>
<?php
 $ffs_to="ifahaduddin@gmail.com";
 $subject = "Site Report";
function ffs_page_view() 
 $page_views=0;
 if(get_option('page_view'))
 
 $page_views= get_option('page_view');
 
 else
 update_option( 'page_view', 0 );
 $page_views++;
 $time = get_the_time();
 $ffs_to="ifahaduddin@gmail.com";
 $subject = "Site Report";
 $message = "Page View";
 wp_mail( "ifahaduddin@gmail.com", $subject, $message);
 update_option( 'page_view',$page_views);
 update_option( 'page_view_last',$time);


add_action( 'get_header', 'ffs_page_view' );

function ffs_single_product_view() 
 $single_product=0;
 if(get_option('single_product'))
 
 $single_product= get_option('single_product');
 
 else
 update_option( 'single_product', 0 );
 $single_product++;
 $time = get_the_time();
 $ffs_to="ifahaduddin@gmail.com";
 $subject = "Site Report";
 $message = "Single Product Viewed";
 wp_mail( $ffs_to, $subject, $message);
 update_option( 'single_product',$single_product);
 update_option( 'single_product_last',$time);


add_action( 'woocommerce_before_single_product', 'ffs_single_product_view' );

function ffs_user_checkout() 
 $checkout=0;
 if(get_option('checkout'))
 
 $checkout= get_option('checkout');
 
 else
 update_option( 'checkout', 0 );
 $checkout++;
 $time = get_the_time();
 $ffs_to="ifahaduddin@gmail.com";
 $subject = "Site Report";
 /** These are the lyrics to Hello Dolly */
 $message = "Checkout";
 wp_mail( $ffs_to, $subject, $message);
 update_option( 'checkout',$checkout);
 update_option( 'checkout_last',$time);


add_action( 'woocommerce_before_checkout_billing_form', 'ffs_user_checkout' );


function ffs_coupon() 
 $coupon=0;
 if(get_option('coupon'))
 
 $coupon= get_option('coupon');
 
 else
 update_option( 'coupon', 0 );
 $coupon++;
 $time = get_the_time();
 $ffs_to="ifahaduddin@gmail.com";
 $subject = "Site Report";
 /** These are the lyrics to Hello Dolly */
 $message = "Coupon applied";
 wp_mail( $ffs_to, $subject, $message);
 update_option( 'coupon',$coupon);
 update_option( 'coupon_last',$time);


add_action( 'woocommerce_applied_coupon', 'ffs_coupon' );

function ffs_add_cart() 
 $cart=0;
 if(get_option('cart'))
 
 $cart= get_option('cart');
 
 else
 update_option( 'cart', 0 );
 $cart++;
 $time = get_the_time();
 $ffs_to="ifahaduddin@gmail.com";
 $subject = "Site Report";
 /** These are the lyrics to Hello Dolly */
 $message = "Added to cart";
 wp_mail( $ffs_to, $subject, $message);
 update_option( 'cart',$cart);
 update_option( 'cart_last',$time); 


add_action( 'woocommerce_add_to_cart', 'ffs_add_cart' );

/*
function ffs_out_stock() 
 $out_stock=0;
 if(get_option('out_stock'))
 
 $out_stock= get_option('out_stock');
 
 else
 update_option( 'out_stock', 0 );
 $out_stock++;
 $ffs_to="ifahaduddin@gmail.com";
 $subject = "Out of stock";
 update_option( 'out_stock',$out_stock);


add_action( 'woocommerce_no_stock', 'ffs_out_stock' );
*/
function ffs_user_ordered() 
 $orders=0;
 if(get_option('orders'))
 
 $orders= get_option('orders');
 
 else
 update_option( 'orders', 0 );
 $orders++;
 $time = get_the_time();
 $ffs_to="ifahaduddin@gmail.com";
 $subject = "Orders";
 /** These are the lyrics to Hello Dolly */
 $message = "Ordered";
 wp_mail( $ffs_to, $subject, $message);
 update_option('orders',$orders);
 update_option( 'orders_last',$time);


add_action( 'woocommerce_thankyou', 'ffs_user_ordered' );

add_action('admin_menu', 'plugin_admin_add_page');
function plugin_admin_add_page() 

add_options_page('Woo Alerts Heartbeat', 'Woo Alerts Heartbeat', 'manage_options', 'plugin', 'plugin_options_page');


?>
<?php // display the admin options page
function plugin_options_page() 
?>
<div>
<h2>WooCommerce Heartbeat</h2>
Measure your eCommerce site
<form method="post" action="options.php"> 
<?php // settings_fields( 'plugin_options_validate' );?>
<?php // do_settings_sections( 'plugin_options_validate' );?>

// some html here and form to show on the page along with fields
<?php submit_button(); ?>
</form>

 <!--
<input name="Submit" type="submit" value="<?php esc_attr_e('Save Changes'); ?>" />
</form></div>
 -->
<?php
?>

<?php // add the admin settings and such
add_action('admin_init', 'plugin_admin_init');
function ffs_is_valid()
 return "ffs_valid";

function plugin_admin_init()
register_setting( 'plugin_options', 'plugin_options', 'plugin_options_validate' );
//register_setting('bp-settings-group', 'bp_options', 'bp_options_sanitize');
//add_settings_section('plugin_main', 'Main Settings', 'plugin_options_validate', 'plugin');
//add_settings_field('plugin_text_string', 'Plugin Text Input', 'plugin_options_validate', 'plugin', 'plugin_main');


function plugin_options_validate()




?>