'use strict';

const exec = require('execon');
const rendy = require('rendy');
const jonny = require('jonny');
const itype = require('itype/legacy');

module.exports = new UtilProto(exec);

function UtilProto(exec) {
    const Util = this;
    const Scope = global || window;
    
    this.getStrBigFirst = getStrBigFirst;
    this.kebabToCamelCase = kebabToCamelCase;
    
    /**
     * copy objFrom properties to target
     *
     * @target
     * @objFrom
     */
    this.extend = (target, objFrom) => {
        let obj;
        let keys;
        let proto;
        
        const isFunc  = itype.function(objFrom);
        const isArray = Array.isArray(objFrom);
        const isObj = itype.object(target);
        let ret = isObj ? target : {};
        
        if (isArray)
            objFrom.forEach((item) => {
               ret = Util.extend(target, item);
            });
        
        else if (objFrom) {
            obj     = isFunc ? new objFrom() : objFrom;
            keys    = Object.keys(obj);
            
            if (!keys.length) {
                proto = Object.getPrototypeOf(objFrom);
                keys  = Object.keys(proto);
            }
            
            keys.forEach(function(name) {
                ret[name] = obj[name];
            });
        }
        
        return ret;
    };
    
    /**
     * extend proto
     *
     * @obj
     */
    this.extendProto           = function(obj) {
        var ret, F      = function() {};
        F.prototype     = Util.extend({}, obj);
        ret             = new F();
        
        return ret;
    };
    
    this.json               = jonny;
    
    this.escapeRegExp = function(str) {
        var isStr = typeof str === 'string';
        
        if (isStr)
            str = str.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&');
        
        return str;
    };
    
    /**
     * get regexp from wild card
     */
    this.getRegExp              = function(wildcard) {
        var regExp;
        
        if (!wildcard)
            wildcard = '*';
        
        wildcard    = '^' + wildcard /* search from start of line */
            .replace('.', '\\.')
            .replace('*', '.*')
            .replace('?', '.?');
        
        wildcard    += '$'; /* search to end of line */
        
        regExp      = new RegExp(wildcard);
        
        return regExp;
    };
    
    this.exec = exec;
    
    /**
     * function gets file extension
     *
     * @param pFileName
     * @return Ext
     */
    this.getExt = function(name) {
        var ret = '';
        var dot;
        var isStr = typeof name === 'string'
        
        if (isStr) {
            dot = name.lastIndexOf('.');
            
            if (~dot)
                ret = name.substr(dot);
        }
        
        return ret;
    };
    
    /**
     * find object by name in arrray
     *
     * @param array
     * @param name
     */
    this.findObjByNameInArr         = function(array, name) {
        var ret;
        
         if (!Array.isArray(array))
            throw Error('array should be array!');
            
        if (typeof name !== 'string')
            throw Error('name should be string!');
        
        array.some(function(item) {
            var is = item.name === name,
                isArray = Array.isArray(item);
            
            if (is)
                ret = item;
            else if (isArray)
                item.some(function(item) {
                    is = item.name === name;
                    
                    if (is)
                        ret = item.data;
                    
                    return is;
                });
            
            return is;
        });
        
        return ret;
    };
    
    /**
     * start timer
     * @param name
     */
    this.time = function(name) {
        const console = Scope.console;
        
        Util.exec.ifExist(console, 'time', [name]);
        
        return this;
    };
    
    /**
     * stop timer
     * @param name
     */
    this.timeEnd                   = function(name) {
        var console    = Scope.console;
        
        Util.exec.ifExist(console, 'timeEnd', [name]);
        
        return this;
    };
    
    function getStrBigFirst(str) {
        if (!str)
            throw Error('str could not be empty!');
        
        var first = str[0].toUpperCase();
        return first + str.slice(1);
    }
    
    function kebabToCamelCase(str) {
        if (!str)
            throw Error('str could not be empty!');
        
        return str
            .split('-')
            .map(getStrBigFirst)
            .join('')
            .replace(/.js$/, '');
    }
}