;( function ( $ ) {
	'use strict';
	var spinner      = null;
	var keyUpTimeout = null;
	var TIMEOUT      = 3000;
	var isChecking   = false;
	var lastChecked;
	var nonce;

	// avoid troubles when asking availability of a slug
	function reverseInputsState() {
		$( 'input,textarea,button' ).each( function () {
			var s = $( this ).prop( 'disabled' );
			$( this ).prop( 'disabled', ! s );
		} );
	}

	function checkSlug( title ) {
		if ( undefined === title || '' === title ) {
			return;
		}
		if ( isChecking ) {
			return;
		}
		if ( lastChecked === title ) {
			return;
		}

		if ( null !== keyUpTimeout ) {
			clearTimeout( keyUpTimeout );
			keyUpTimeout = null;
		}

		$( '#public-stats-spinner32' ).append( spinner );

		lastChecked = title;
		isChecking  = true;

		var formData = {
			nonce:  nonce,
			action: 'advads-tracking-check-slug',
			title:  title
		};

		$.ajax( {
			type:    'POST',
			url:     ajaxurl,
			data:    formData,
			success: function ( resp, textStatus, XHR ) {
				$( '#public-stats-spinner32' ).empty();
				if ( undefined === resp.status ) {
					displayResult();
				} else {
					if ( ! resp.status ) {
						displayResult( {
							error: true,
							msg:   resp.msg || trackingSettingsLocale.unknownError
						} );
						$( '#public-stat-base' ).val( resp.slug );
					} else {
						displayResult( {
							error: false,
							msg:   trackingSettingsLocale.linkAvailable
						} );
						$( '#public-stat-base' ).val( resp.slug );
					}
				}
				isChecking = false;
				reverseInputsState();
			},
			error:   function ( request, textStatus, err ) {
				$( '#public-stats-spinner32' ).empty();
				displayResult( {
					error: true,
					msg:   trackingSettingsLocale.serverFail
				} );
				isChecking = false;
				reverseInputsState();
			}
		} );
		reverseInputsState();
		$( '#immediate-report-notice' ).empty();
	}

	function displayResult( res ) {
		if ( undefined === res ) {
			res = {
				error: true,
				msg:   trackingSettingsLocale.unknownError
			};
		}
		$( '#public-stat-notice' ).empty();
		if ( res.error ) {
			$( '#public-stat-notice' ).append( $( '<span style="color:red;">' + res.msg + '</span>' ) );
		} else {
			$( '#public-stat-notice' ).append( $( '<span style="color:#50CE61;">' + res.msg + '</span>' ) );
		}
	}

	$( function () {
		spinner = $( $( '#advads-track-admin-spinner' ).html() );
		nonce   = advadsTrackingAjaxNonce;

		// change on public stat link base
		$( document ).on( 'change', '#public-stat-base', function () {
			checkSlug( $( this ).val() );
		} );

		// keyup on public stat link base
		$( document ).on( 'keyup', '#public-stat-base', function () {
			var elem = $( this );
			if ( null !== keyUpTimeout ) {
				clearTimeout( keyUpTimeout );
				keyUpTimeout = null;
			}
			keyUpTimeout = setTimeout( function () {
				checkSlug( elem.val() );
			}, TIMEOUT );
		} );

		// immedaite email report
		$( document ).on( 'click', '#send-immediate-report', function ( ev ) {
			ev.preventDefault();
			$( '#immediate-report-notice' ).empty();
			$( '#send-email-spinner-spinner' ).append( spinner );
			var formData = {
				nonce:  nonce,
				action: 'advads-tracking-immediate-report'
			};

			$.ajax( {
				type:    'POST',
				url:     ajaxurl,
				data:    formData,
				success: function ( resp, textStatus, XHR ) {
					$( '#send-email-spinner-spinner' ).empty();
					if ( undefined !== resp.status && resp.status ) {
						$( '#immediate-report-notice' ).html( '<span style="color:green">' + trackingSettingsLocale.emailSent + '</span>' );
					} else {
						$( '#immediate-report-notice' ).html( '<span style="color:red">' + trackingSettingsLocale.emailNotSent + '</span>' );
					}
					reverseInputsState();
				},
				error:   function ( request, textStatus, err ) {
					$( '#send-email-spinner-spinner' ).empty();
					$( '#immediate-report-notice' ).html( '<span style="color:red">' + trackingSettingsLocale.serverFail + '</span>' );
					reverseInputsState();
				}
			} );

			reverseInputsState();

		} );

	} );

	$( '[name="advanced-ads-tracking[method]"]' ).on( 'change', function () {
		$( '.advads-amp-warning' ).attr( 'data-method', this.value );
		var $uidRow   = $( '.advads-ga-uid' ),
			$uidInput = $( '[name="advanced-ads-tracking[ga-UID]"]' );
		if ( this.value === 'ga' || $uidRow.hasClass( 'advads-is-ga-forced' ) ) {
			$uidRow.addClass( 'advads-is-visible' );
			$uidInput.attr( 'required', true );
		} else {
			$uidRow.removeClass( 'advads-is-visible' );
			$uidInput.removeAttr( 'required' );
		}
	} );

} )( jQuery );