/** @module logger */
__PluginManager__.register('Logger', function(module, exports, require, global){

    var support = require('support');

    var lightMap = [
        {class: '', keys: []},
        {class: 'text-danger', keys: []},
        {class: 'text-secondary', keys: []},
    ];
    var getLightClass = function(key) {
        key = ''+key;
        var addClass = '', ar;
        for(var i=0; i < lightMap.length; i++){
            ar = lightMap[i]['keys'];
            addClass = ar.includes(key)?lightMap[i]['class']:addClass;
        }
        return addClass;
    };
    var collectionTemplater = '<div class="kit-logger kit-logger--fixed"></div>';
    // function dump(value) {
    //     var rArray = [];
    //     if(value === null) {
    //         rArray[0] = 'null';
    //     } else {
    //         rArray[0] = String(typeof value);
    //         rArray[1] = emptyPHP(value)?'empty':'';
    //     }
    //     return rArray.join(' ');
    // };
    function getRowNode(level, key, value, opClass = ''){
        if(opClass) {
            opClass = ' kit-logger-row--'+opClass;
        }
        var i = 0, lvlTemplate = '';
        key = String(key);
        value = String(value);
        lvlTemplate = level?'style="--logger-lvl:'+level+';" ':'';
        var result = '<logger-item '+lvlTemplate+'class="'+getLightClass(key)+opClass+'"><logger-item__key>'+key+'</logger-item__key><logger-item__value>'+value+'</logger-item__value></logger-item>';

        return support.makeNode(result);
    }
    function getItemObjectNode(id = ''){
        var entity = '', css = '', style = '';
        if(id) {
            css = '<style>input#'+id+':checked ~ [data-entity-id="'+id+'"] {display: block !important;}</style>';
            entity = ' data-entity-id="'+id+'"';
            style = ' style="display: none"'
        }
        return support.makeNode('<logger-item-object'+entity+style+'>'+css+'</logger-item-object>');
    }

    function args2array(arguments) {
        var args = [];
        for (var i = 0; i < arguments.length; i++) {
            args.push(arguments[i]);
        }
        return args;
    }

    /**
     * @class Logger
     * @memberOf kit
     */
    var Logger = function() {
        this.collection = undefined;
    };
    /**
     * @param node {HTMLElement}
     */
    Logger.prototype.setCollection = function (node) {
        /**
         * @type {HTMLElement}
         */
        this.collection = node || document.getElementById('kit-logger') || document.querySelector('.kit-logger') || support.makeNode(collectionTemplater);

        if((this.collection instanceof HTMLElement) && !this.collection.parentElement) {
            document.body.appendChild(this.collection)
        }
    };

    Logger.prototype.__row = function(message, lvl = 0, opClass = '') {
        if (!this.collection) {
            this.setCollection();
        }
        var log = this.collection;

        function setObjectValue(log, lvl, key, value, opClass, depth = 3, openDepth = 1, isRoot = true) {
            var rowChild, isObj = support.isObject(value), id = isObj?support.uniqueId():'',
                val = (isObj&&depth)?'<label for="'+id+'">'+value+'</label>':value, inp, j,
                len = isObj?Object.keys(value).length:0;

            if(!isRoot || (isRoot && !isObj)) {
                log.appendChild(getRowNode(lvl, key, '' + val + (isObj?(' ['+len+']'):''), opClass));
            }
            if(isObj&&depth) {
                !isRoot && ++lvl;
                depth = Math.max(0, depth - 1);
                log.appendChild(inp = support.makeNode('<input id="'+id+'" type="checkbox" style="display: none;">'));
                inp.checked = !!openDepth;
                openDepth = Math.max(0, openDepth - 1);
                log.appendChild(rowChild = getItemObjectNode(id));
                for(j in value) {
                    if(value.hasOwnProperty(j))
                        setObjectValue(rowChild, lvl, j, value[j], opClass, depth, openDepth, false);
                }
            }
        }

        setObjectValue(log, lvl, '', message, opClass, 6, 3);

        log.scrollTop = log.scrollHeight;
    };

    Logger.prototype.__log = function(lvl, type, message, context){
        lvl = Number(lvl);
        var opClass = '';
        if(arguments.length >= 2) opClass = type;
        if(arguments.length >= 3)
            this.__row(message, lvl, opClass);
        if(arguments.length >= 4)
            this.__row(context, lvl+1);
    };

    Logger.prototype.emergency = function (message, context) {
        this.__log.apply(this, [0, 'emergency'].concat(args2array(arguments)));
    };
    Logger.prototype.alert = function (message, context) {
        this.__log.apply(this, [0, 'alert'].concat(args2array(arguments)));
    };
    Logger.prototype.critical = function (message, context) {
        this.__log.apply(this, [0, 'critical'].concat(args2array(arguments)));
    };
    Logger.prototype.error = function (message, context) {
        this.__log.apply(this, [0, 'error'].concat(args2array(arguments)));
    };
    Logger.prototype.warning = function (message, context) {
        this.__log.apply(this, [0, 'warning'].concat(args2array(arguments)));
    };
    Logger.prototype.notice = function (message, context) {
        this.__log.apply(this, [0, 'notice'].concat(args2array(arguments)));
    };
    Logger.prototype.info = function (message, context) {
        this.__log.apply(this, [0, 'info'].concat(args2array(arguments)));
    };
    Logger.prototype.debug = function (message, context) {
        this.__log.apply(this, [0, 'debug'].concat(args2array(arguments)));
    };
    Logger.prototype.success = function (message, context) {
        this.__log.apply(this, [0, 'success'].concat(args2array(arguments)));
    };
    Logger.prototype.log = function (lvl = 0, message = '', context, type) {
        lvl = Number(lvl);
        var opClass = '';
        if(arguments.length >= 4) opClass = type;
        if(arguments.length >= 2)
            this.__row(message, lvl, opClass);
        if(arguments.length >= 3)
            this.__row(context, lvl+1, opClass);
    };

    return module.exports = Logger;
});