/*! font-size adapter jquery plugin - v0.1.0
* https://github.com/matijamrkaic/font-size-adapter
* Copyright (c) 2017 Matija Mrkaić; Licenced MIT
*/

(function ($){
    "use strict";

    $.fn.fontSizeAdapter = function( options ){
        var $el = this;

        // Default Settings
        var settings = $.extend({
            fontMax: 0, // Set maximum font-size limit
            fontMin: 0, // Set minimum font-size limit
            enlarge: true, // Enable font-size to be increased from it's original size
            onResize: true // Enable automatic recalculation on $(window).resize();
        }, options);

        var fontOriginal;
        var fontAdapted;
        var biggest = {};



        // Calculate values and find biggest item (relative to available space)
        function setup(){

            // reset data
            fontOriginal = $el.css('font-size','').css('font-size');
            fontOriginal = parseInt(fontOriginal, 10);
            biggest.coefficient = settings.enlarge ? 999 : 1;

            // Find biggest item in selection, relatively to it's parent
            /*$el.each(function(){
                // pay attention to margins/paddings of elements
                if($(this).closest('a').is(":visible")){
                    var width = Math.ceil($(this).outerWidth(true));
                    // console.info($(this).parent().outerWidth());
                    var parentWidth = Math.ceil($(this).parent().width()+5);
                    var coefficient = parentWidth / width;

                    if( coefficient < biggest.coefficient ){
                        biggest = {el: this, coefficient: coefficient};
                    }
                    console.log(fontOriginal);
                    console.log(width);
                    console.log(parentWidth);
                    console.log(coefficient);
                }

            });*/

            // pay attention to margins/paddings of elements
            if($el.closest('a').is(":visible")){

                var width = Math.ceil($el.outerWidth(true));
                // console.info($(this).parent().outerWidth());
                var parentWidth = Math.ceil($el.parent().width()+5);
                var coefficient = parentWidth / width;

                if( coefficient < biggest.coefficient ){
                    biggest = {el: $el, coefficient: coefficient};
                }
                _apply();

            }
        }



        // Apply to all elements
        function _apply(){
            if(biggest.coefficient < 1){
                fontAdapted = Math.floor( biggest.coefficient * fontOriginal );
                if( settings.fontMax ){
                    fontAdapted = Math.min( fontAdapted, parseInt(settings.fontMax) );
                }

                if( settings.fontMin ){
                    fontAdapted = Math.max( fontAdapted, parseInt(settings.fontMin) );
                }

                if( fontAdapted != fontOriginal ){
                    $el.css('font-size', fontAdapted);
                }

                // Add 'finished' class to elements
                $el.addClass('font-size-adapted');
            }else{
                $el.css('font-size', fontOriginal);
                // Add 'finished' class to elements
                $el.addClass('font-size-adapted');
            }
        }
        // Start
        setup();

        // If $(window).resize watch enabled
        // if( settings.onResize ){
        //    $(window).resize(function (e) {
        // 		e.preventDefault();
        //        setup();
        //    })
        // }

        // Enable chaining and finish
        return this;
    };

}(jQuery));