(function( $ ) {

	var doing_check_licence = false;
	var fade_duration = 650;

	var admin_url = ajaxurl.replace( '/admin-ajax.php', '' );
	var spinner_url = admin_url + '/images/spinner';
	var spinner;
	if ( 2 < window.devicePixelRatio ) {
		spinner_url += '-2x';
	}
	spinner_url += '.gif';
	spinner = $( '<img src="' + spinner_url + '" alt="" class="check-licence-spinner" />' );

	$( document ).ready( function() {

		$( 'body' ).on( 'click', '.check-my-licence-again', function( e ) {
			e.preventDefault();
			$( this ).blur();

			if ( doing_check_licence ) {
				return false;
			}

			doing_check_licence = true;

			$( this ).hide();
			spinner.insertAfter( this );

			var check_again_link = ' <a class="check-my-licence-again" href="#">' + wpmdb_update_strings.check_license_again + '</a>';

			$.ajax( {
				url: ajaxurl,
				type: 'POST',
				dataType: 'json',
				cache: false,
				data: {
					action: 'wpmdb_check_licence',
					nonce: wpmdb_nonces.check_licence,
					context: 'update'
				},
				error: function( jqXHR, textStatus, errorThrown ) {
					doing_check_licence = false;
					$( '.wpmdb-licence-error-notice' ).fadeOut( fade_duration, function() {
						$( '.wpmdb-licence-error-notice' ).empty()
							.html( wpmdb_update_strings.license_check_problem + check_again_link )
							.fadeIn( fade_duration );
					} );
				},
				success: function( data ) {
					doing_check_licence = false;
					if ( 'undefined' !== typeof data.errors ) {
						var msg = '';
						for ( var key in data.errors ) {
							msg += data.errors[ key ];
						}
						$( '.wpmdb-licence-error-notice' ).fadeOut( fade_duration, function() {
							$( '.check-licence-spinner' ).remove();
							$( '.wpmdb-licence-error-notice' ).empty()
								.html( msg )
								.fadeIn( fade_duration );
						} );
					} else {

						// Success
						// Fade out, empty wpmdb custom error content, swap back in the original wordpress upgrade message, fade in
						$( '.wpmdbpro-custom-visible' ).fadeOut( fade_duration, function() {
							$( '.check-licence-spinner' ).remove();
							$( '.wpmdbpro-custom-visible' ).empty()
								.html( $( '.wpmdb-original-update-row' ).html() )
								.fadeIn( fade_duration );
						} );
					}
				}
			} );

		} );

	} );

})( jQuery );