'use strict';

export interface ISmartTooltipScope extends ng.IScope {
    sdcSmartToolip;
}

export class SmartTooltipDirective implements ng.IDirective {

    constructor(private $compile:ng.ICompileService) {
    }

    public replace = false;
    public restrict = 'A';
    public transclude = false;

    public link = (scope:ISmartTooltipScope, $elem:ng.IAugmentedJQuery, $attrs:angular.IAttributes) => {

        if ($elem[0].hasAttribute('style') === false) {
            $elem[0].setAttribute("style", "overflow: hidden; white-space: nowrap; text-overflow: ellipsis;");
        } else {
            let styles = $elem.attr('style');
            $elem[0].setAttribute("style", styles + ";overflow: hidden; white-space: nowrap; text-overflow: ellipsis;");
        }

        $elem.bind('mouseenter', () => {
            if ($elem[0].offsetWidth < $elem[0].scrollWidth && !$elem.attr('tooltips')) {
                $attrs.$set('tooltips', 'tooltips');
                if ($attrs['sdcSmartTooltip'] && $attrs['sdcSmartTooltip'].length > 0) {
                    $elem.attr('tooltip-content', $attrs['sdcSmartTooltip']);
                } else {
                    $attrs.$set('tooltip-content', $elem.text());
                }

                //One possible problem arises when the ngIf is placed on the root element of the template.
                //ngIf removes the node and places a comment in it's place. Then it watches over the expression and adds/removes the actual HTML element as necessary.
                //The problem seems to be that if it is placed on the root element of the template, then a single comment is what is left from the
                //whole template (even if only temporarily), which gets ignored (I am not sure if this is browser-specific behaviour), resulting in an empty template.

                // Remove ng-if attribute and its value (if we reach here, we pass ng-if (ng-if===true), so we can remove it).
                $elem.removeAttr('ng-if');
                $elem.removeAttr('data-ng-if');

                // Remove me (the directive from the element)
                let template = $elem[0].outerHTML;
                template = template.replace('sdc-smart-tooltip=""', '');
                template = template.replace('sdc-smart-tooltip="' + $elem.text() + '"', '');
                //console.log(template);

                let el = this.$compile(template)(scope);
                console.log(el);
                $elem.replaceWith(el);
            }
        });
    };

    public static factory = ($compile:ng.ICompileService)=> {
        return new SmartTooltipDirective($compile);
    };
}

SmartTooltipDirective.factory.$inject = ['$compile'];