(function () {
    'use strict';

    var serviceId = 'validation';
    angular.module('app').factory(serviceId, [validation]);

    function validation() {

        var service = {
            userValidationConfig: userValidationConfig,
            getEmbedPattern: getEmbedPattern,
            getEmbedPlaceholder: getEmbedPlaceholder
        };

        function userValidationConfig() {
            return {
                userFirstName: {
                    regex: /^([A-Za-z\s\-\']*)$/,
                    maxCharacters:20
                },
                userLastName: {
                    regex: /^([A-Za-z\s\-\']*)$/,
                    maxCharacters:30
                },
                email:{
                    regex: /^[a-zA-Z0-9_.'+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$/,
                    maxCharacters: 100
                },
                password: {
                    regex: /./,
                    maxCharacters: 20,
                    minCharacters:6
                }
            }
        }

        function getEmbedPattern(embedType) {
            var pattern='/./';
            switch (embedType) {
                case "youtube":
                    pattern = new RegExp("(youtube.com/|youtu.be/)");
                    break;
                case "vimeo":
                    pattern = new RegExp('/vimeo.com/');
                    break;
                case "dailymotion":
                    pattern = new RegExp("dailymotion.com/|dai.ly/");
                    break;
                case "prezi":
                    pattern = new RegExp("prezi.com/");
                    break;
                case "google-maps":
                    pattern = new RegExp("(maps.google.com/|goo.gl.com/maps/|google.co.uk/maps|goo.gl/maps)");
                    break;
                case "sketchfab":
                    pattern = new RegExp("sketchfab.com/");
                    break;
                case "flickr":
                    pattern = new RegExp("(?:flickr.com/photos | flic.kr)");
                    break;
                case "slideshare":
                    pattern = new RegExp("(slideshare.net|slidesha.re)");
                    break;
            }
            return pattern;
        }

        //not really validation but heh-ho
        function getEmbedPlaceholder(embedType) {
            var placeholder = 'url goes here';
            switch (embedType) {
                case "youtube":
                    placeholder = "e.g. http://www.youtube.com/watch?v=iZWaFLPsQkk";
                    break;
                case "embed-item":
                    placeholder = "e.g. https://www.linkedin.com/in/williamhgates";
                    break;
                case "vimeo":
                    placeholder = "e.g. http://vimeo.com/69057206";
                    break;
                case "dailymotion":
                    placeholder = "e.g. http://www.dailymotion.com/video/x26lc3v_great-british-bake-off-quarter-final-review_lifestyle";
                    break;
                case "prezi":
                    placeholder = "e.g. http://prezi.com/toncjnvzed36/?utm_campaign=share&utm_medium=copy&rc=ex0share";
                    break;
                case "google-maps":
                    placeholder = "e.g. https://goo.gl/maps/9iKqz";
                    break;
                case "sketchfab":
                    placeholder = "e.g. https://sketchfab.com/models/11a921b47ed34d4dbdf40e3dbca00223";
                    break;
                case "flickr":
                    placeholder = "";
                    break;
                case "slideshare":
                    placeholder = "e.g. http://www.slideshare.net/aoweiyang/10-deceptions-revealed-through-body-language";
                    break;
            }
            return placeholder;
        }
        return service;
    }
})();