(function () {
	// Text data
	var textData = {
		'in': {
			'button': 'Deactivate Accessibility Tools',
			'snippet': 'Activated'
		},
		'out': {
			'button': 'Activate Accessibility Tools',
			'snippet': 'Not Activated'
		}
	};
	// get page elements
	var activation_button = document.getElementById('ae_activation');
	var activation_snippet = document.getElementById('ae_activation_snippet');
	// listen for click
	activation_button.addEventListener('click', function () {
		if (!window.AudioEye || !window.AudioEye.optIn) {
			throw new Error('AudioEye Opt in not supported');
		}
		// toggle opt in state
		toggle(
			AudioEye.optIn,
			textData,
			activation_button,
			activation_snippet
		);
	});
    
     //Toggle user's opt in state and manage page state
     //@param optIn {object} - AudioEye.optIn
     //@param textData {object} - text data for in and out states
     //@param button {DOMNode} - text data for in and out states
     //@param snippet {DOMNode} - text data for in and out states
     
	function toggle(optIn, textData, button, snippet) {
		// get opposite state
		var new_state = (optIn.state('BASE')) ? 'out' : 'in';
		// fix site menu dash
		$ae('.ae-accessible-menu-button:contains("Site-Menu")').text('Site Menu');

		// Request opt in/out
		optIn.opt(new_state, 'BASE');
		// Update display state
		button.innerText = textData[new_state].button;
		snippet.innerText = textData[new_state].snippet;
	}
	var pollOptIn = window.setInterval(function () {

		// user is opted in - restore previous state
		if (window.AudioEye && window.AudioEye.optIn && window.AudioEye.optIn.state('BASE')) {

			// stop polling 
			window.clearInterval(pollOptIn);
			// Fix site menu dash
			$ae('.ae-accessible-menu-button:contains("Site-Menu")').text('Site Menu');
			// Update display state
			activation_button.innerText = textData['in'].button;
			activation_snippet.innerText = textData['in'].snippet;
		}
	}, 50);
})();