Synnefo

;(function(root){

    var root = root;

    var snf = root.synnefo = root.synnefo || {};

    snf.i18n = {};

    // Logging namespace

    var logging = snf.logging = snf.logging || {};

    // logger object

    var logger = logging.logger = function(ns, level){

        var levels = ["debug", "info", "error"];

        var con = window.console;

        this.level = level || synnefo.logging.level;

        this.ns = ns || "";

        this._log = function(lvl) {

            if (lvl >= this.level && con) {

                var args = Array.prototype.slice.call(arguments[1]);

                var level_name = levels[lvl];

                if (this.ns) {

                    args = ["["+this.ns+"] "].concat(args);

                }

                log = con.log

                if (con[level_name])

                    log = con[level_name]

                try {

                    con && log.apply(con, Array.prototype.slice.call(args));

                } catch (err) {}

            }

        }

        this.debug = function() {

            var args = [0]; args.push.call(args, arguments);

            this._log.apply(this, args);

        }

        this.info = function() {

            var args = [1]; args.push.call(args, arguments);

            this._log.apply(this, args);

        }

        this.error = function() {

            var args = [2]; args.push.call(args, arguments);

            try {

                console.trace()

            } catch (err) {}

            this._log.apply(this, args);

        }

    };

    synnefo.collect_user_data = function() {

        var data = {}

        try {

            data.calls = synnefo.api.requests;

        } catch (err) { data.calls = err }

        try {

            data.errors = synnefo.api.errors;

        } catch (err) { data.errors = err }

        try {

            data.data = {};

        } catch (err) { data.data = err }

        try {

            data.data.vms = synnefo.storage.vms.toJSON();

        } catch (err) { data.data.vms = err }

        try {

            data.data.networks = synnefo.storage.vms.toJSON();

        } catch (err) { data.data.networks = err }

        try {

            data.data.images = synnefo.storage.images.toJSON();

        } catch (err) { data.data.images = err }

        try {

            data.data.flavors = synnefo.storage.flavors.toJSON();

        } catch (err) { data.data.flavors = err }

        try {

            data.date = new Date;

        } catch (err) { data.date = err }

        return data;

    }

    // default logger level (debug)

    synnefo.logging.level = 0;

    // generic logger

    synnefo.log = new logger({'ns':'SNF'});

    // synnefo config options

    synnefo.config = synnefo.config || {};

    synnefo.config.api_url = "/api/v1.1";

    // Util namespace

    synnefo.util = synnefo.util || {};

    // Extensions and Utility functions

    synnefo.util.ISODateString = function(d){

        function pad(n){

            return n<10 ? '0'+n : n

        }

         return d.getUTCFullYear()+'-'

         + pad(d.getUTCMonth()+1)+'-'

         + pad(d.getUTCDate())+'T'

         + pad(d.getUTCHours())+':'

         + pad(d.getUTCMinutes())+':'

         + pad(d.getUTCSeconds())+'Z'

    }

    synnefo.util.parseUri = function(sourceUri) {

        var uriPartNames = ["source","protocol","authority","domain","port","path","directoryPath","fileName","query","anchor"];

        var uriParts = new RegExp("^(?:([^:/?#.]+):)?(?://)?(([^:/?#]*)(?::(\\d*))?)?((/(?:[^?#](?![^?#/]*\\.[^?#/.]+(?:[\\?#]|$)))*/?)?([^?#/]*))?(?:\\?([^#]*))?(?:#(.*))?").exec(sourceUri);

        var uri = {};

        for(var i = 0; i < 10; i++){

            uri[uriPartNames[i]] = (uriParts[i] ? uriParts[i] : "");

        }

        // Always end directoryPath with a trailing backslash if a path was present in the source URI

        // Note that a trailing backslash is NOT automatically inserted within or appended to the "path" key

        if(uri.directoryPath.length > 0){

            uri.directoryPath = uri.directoryPath.replace(/\/?$/, "/");

        }

        return uri;

    }

    synnefo.util.equalHeights = function() {

        var max_height = 0;

        var selectors = _.toArray(arguments);

        // TODO: implement me

    }

    synnefo.util.truncate = function(string, size, append, words) {

        if (string.length <= size) {

            return string;

        }

        if (append === undefined) {

            append = "...";

        }

        if (!append) { append = "" };

        // TODO: implement word truncate

        if (words === undefined) {

            words = false;

        }

        len = size - append.length;

        return string.substring(0, len) + append;

    }

    synnefo.util.readablizeBytes = function(bytes) {

        var s = ['bytes', 'kb', 'MB', 'GB', 'TB', 'PB'];

        var e = Math.floor(Math.log(bytes)/Math.log(1024));

        return (bytes/Math.pow(1024, Math.floor(e))).toFixed(2)+" "+s[e];

    }

    synnefo.i18n.API_ERROR_MESSAGES = {

        'timeout': {

            'message': 'Timeout', 

            'allow_report': false

        },

        'error': {

            'message': 'API error'

        }, 

        'abort': {},

        'parserror': {}

    }

    synnefo.util.array_diff = function(arr1, arr2) {

        var removed = [];

        var added = [];

        _.each(arr1, function(v) {

            if (arr2.indexOf(v) == -1) {

                removed[removed.length] = v;

            }

        })

        _.each(arr2, function(v) {

            if (arr1.indexOf(v) == -1) {

                added[added.length] = v;

            }

        })

        return {del: removed, add: added};

    }

    synnefo.util.open_window = function(url, name, specs) {

        // default specs

        var opts = _.extend({

            scrollbars: 'no',

            menubar: 'no',

            toolbar: 'no',

            status: 'no',

            top: 'no',

            left: 'no',

            height: screen.height,

            width: screen.width,

            fullscreen: 'yes',

            channelmode: 'yes',

            directories: 'no',

            left: 0,

            location: 'no',

            top: 0

        }, opts)

        window.open(url, name, opts);

    }

    synnefo.util.stacktrace = function() {

        try {

            var obj = {};

            if (window.Error && Error.captureStackTrace) {

                Error.captureStackTrace(obj, synnefo.util.stacktrace);

                return obj.stack;

            } else {

                return printStackTrace().join("<br /><br />");

            }

        } catch (err) {}

        return "";

    },

    synnefo.util.array_combinations = function(arr) {

        if (arr.length == 1) {

            return arr[0];

        } else {

            var result = [];

            // recur with the rest of array

            var allCasesOfRest = synnefo.util.array_combinations(arr.slice(1));  

            for (var i = 0; i < allCasesOfRest.length; i++) {

                for (var j = 0; j < arr[0].length; j++) {

                    result.push(arr[0][j] + "-" + allCasesOfRest[i]);

                }

            }

            return result;

        }

    }

    synnefo.util.parse_api_error = function(arguments) {

        arguments = arguments[0];

        var xhr = arguments[0];

        var error_message = arguments[1];

        var error_thrown = arguments[2];

        var ajax_settings = arguments.ajax;

        var json_data = undefined;

        if (xhr.responseText) {

            try {

                json_data = JSON.parse(xhr.responseText)

            } catch (err) {}

        }

        module = "API"

        try {

            path = synnefo.util.parseUri(ajax_settings.url).path.split("/");

            path.splice(0,3)

            module = path.join("/");

        } catch (err) {

            console.error("cannot identify api error module");

        }

        defaults = {

            'message': 'Api error',

            'type': 'API',

            'allow_report': true

        }

        var code = -1;

        try {

            code = xhr.status || "undefined";

        } catch (err) {console.error(err);}

        var details = "";

        if ([413].indexOf(code) > -1) {

            defaults.non_critical = true;

            defaults.allow_report = false;

            defaults.allow_reload = false;

        }

        if (json_data) {

            $.each(json_data, function(key, obj) {

                code = obj.code;

                details = obj.details.replace("\n","<br>");

                error_message = obj.message;

            })

        }

        extra = {'URL': ajax_settings.url};

        options = {};

        options = _.extend(options, {'details': details, 'message': error_message, 'ns': module, 'extra_details': extra});

        options = _.extend(options, synnefo.i18n.API_ERROR_MESSAGES[error_message] || {});

        options = _.extend(defaults, options);

        options.code = code;

        return options;

    }

    // Backbone extensions

    //

    // super method

    Backbone.Model.prototype._super = Backbone.Collection.prototype._super = Backbone.View.prototype._super = function(funcName){

        return this.constructor.__super__[funcName].apply(this, _.rest(arguments));

    }

    // simple string format helper 

    // http://stackoverflow.com/questions/610406/javascript-equivalent-to-printf-string-format

    String.prototype.format = function() {

        var formatted = this;

        for (var i = 0; i < arguments.length; i++) {

            var regexp = new RegExp('\\{'+i+'\\}', 'gi');

            formatted = formatted.replace(regexp, arguments[i]);

        }

        return formatted;

    };

    $.fn.setCursorPosition = function(pos) {

        if ($(this).get(0).setSelectionRange) {

          $(this).get(0).setSelectionRange(pos, pos);

        } else if ($(this).get(0).createTextRange) {

          var range = $(this).get(0).createTextRange();

          range.collapse(true);

          range.moveEnd('character', pos);

          range.moveStart('character', pos);

          range.select();

        }

    }

})(this);