jQuery( document ).ready( function ( $ ) {

    /**
     * Country select.
     */
    var $country_el = $( '.opalestate-submission-form #opalestate_ppt_location, [name="location"],' +
        ' [name="opalestate_ofe_location"], [name="opalestate_agt_location"], [name="opalestate_user_location"]' ),
        $state_el = $( '.opalestate-submission-form #opalestate_ppt_state, [name="state"],' +
            ' [name="opalestate_ofe_state"], [name="opalestate_agt_state"], [name="opalestate_user_state"]' ),
        $city_el = $( '.opalestate-submission-form #opalestate_ppt_city, [name="city"],' +
            ' [name="opalestate_ofe_city"], [name="opalestate_agt_city"], [name="opalestate_user_city"]' );

    $country_el.each( function () {
        if ( $( this ).val() != '' && $( this ).val() != '-1' ) {
            opalestate_ajax_get_state_by_country( $( this ) );
        }
    } );

    $country_el.on( 'change', function () {
        opalestate_ajax_get_state_by_country( $( this ) );
    } );

    $state_el.on( 'change', function () {
        opalestate_ajax_get_city_by_state( $( this ) );
    } );

    function opalestate_ajax_get_state_by_country( $el ) {
        var country = $el.val();
        var is_search = 0;

        if ( $el.closest( '.opalestate-search-form' ).length !== 0 ) {
            is_search = 1;
        }

        var opalAjaxUrl = opalestate_get_ajax_url();

        $.ajax( {
            type: 'POST',
            url: opalAjaxUrl,
            data: {
                'action': 'opalestate_ajax_get_state_by_country',
                'country': country,
                'is_search': is_search
            },
            success: function ( data ) {
                var old_selected = $state_el.val();
                var selected = is_search ? '-1' : '';
                if ( old_selected != '' && old_selected != '-1' ) {
                    $.each( $.parseJSON( data ), function( key, value ) {
                        if ( old_selected == value.id ) {
                            selected = value.id;
                        }
                    });
                }

                $state_el.empty();
                $state_el.select2( {
                    data: $.parseJSON( data )
                } );
                $state_el.val( selected ).trigger( 'change' );
            }
        } );
    }

    function opalestate_ajax_get_city_by_state( $el ) {
        var state = $el.val();
        var is_search = 0;

        if ( $el.closest( '.opalestate-search-form' ).length !== 0 ) {
            is_search = 1;
        }

        var opalAjaxUrl = opalestate_get_ajax_url();

        $.ajax( {
            type: 'POST',
            url: opalAjaxUrl,
            data: {
                'action': 'opalestate_ajax_get_city_by_state',
                'state': state,
                'is_search': is_search
            },
            success: function ( data ) {
                var old_selected = $city_el.val();
                var selected = is_search ? '-1' : '';
                if ( old_selected != '' && old_selected != '-1' ) {
                    $.each( $.parseJSON( data ), function( key, value ) {
                        if ( old_selected == value.id ) {
                            selected = value.id;
                        }
                    });
                }

                $city_el.empty();
                $city_el.select2( {
                    data: $.parseJSON( data )
                } );
                $city_el.val( selected ).trigger( 'change' );
            }
        } );
    }

    function opalestate_get_ajax_url() {
        var opalAjaxUrl = '';
        if ( typeof ajaxurl != 'undefined' ) {
            opalAjaxUrl = ajaxurl;
        } else {
            opalAjaxUrl = opalesateJS.ajaxurl;
        }

        return opalAjaxUrl;
    }
} );