'use strict';

;!function(undefined) {

	var ObjectPath = {
		parse: function(str){
			if(typeof str !== 'string'){
				throw new TypeError('ObjectPath.parse must be passed a string');
			}

			var i = 0;
			var parts = [];
			var d, b, q, c;
			while (i < str.length){
				d = str.indexOf('.', i);
				b = str.indexOf('[', i);

				// we've reached the end
				if (d === -1 && b === -1){
					parts.push(str.slice(i, str.length));
					i = str.length;
				}

				// dots
				else if (b === -1 || (d !== -1 && d < b)) {
					parts.push(str.slice(i, d));
					i = d + 1;
				}

				// brackets
				else {
					if (b > i){
						parts.push(str.slice(i, b));
						i = b;
					}
					q = str.slice(b+1, b+2);
					if (q !== '"' && q !=='\'') {
						c = str.indexOf(']', b);
						if (c === -1) c = str.length;
						parts.push(str.slice(i + 1, c));
						i = (str.slice(c + 1, c + 2) === '.') ? c + 2 : c + 1;
					} else {
						c = str.indexOf(q+']', b);
						if (c === -1) c = str.length;
						while (str.slice(c - 1, c) === '\\' && b < str.length){
							b++;
							c = str.indexOf(q+']', b);
						}
						parts.push(str.slice(i + 2, c).replace(new RegExp('\\'+q,'g'), q));
						i = (str.slice(c + 2, c + 3) === '.') ? c + 3 : c + 2;
					}
				}
			}
			return parts;
		},

		// root === true : auto calculate root; must be dot-notation friendly
		// root String : the string to use as root
		stringify: function(arr, quote){

			if(!Array.isArray(arr))
				arr = [arr.toString()];

			quote = quote === '"' ? '"' : '\'';

			return arr.map(function(n){ return '[' + quote + (n.toString()).replace(new RegExp(quote, 'g'), '\\' + quote) + quote + ']'; }).join('');
		},

		normalize: function(data, quote){
			return ObjectPath.stringify(Array.isArray(data) ? data : ObjectPath.parse(data), quote);
		},

		// Angular
		registerModule: function(angular) {
			angular.module('ObjectPath', []).provider('ObjectPath', function(){
				this.parse = ObjectPath.parse;
				this.stringify = ObjectPath.stringify;
				this.normalize = ObjectPath.normalize;
				this.$get = function(){
					return ObjectPath;
				};
			});
		}
	};

	// AMD
	if (typeof define === 'function' && define.amd) {
		define(function() {
			return ObjectPath;
		});
	}

	// CommonJS
	else if (typeof exports === 'object') {
		exports.ObjectPath = ObjectPath;
	}

	// Browser global
	else {
		window.ObjectPath = ObjectPath;
	}
	
}();