// *** Service Calling Proxy Class
function serviceProxy(serviceUrl) {
    var _I = this;
    this.serviceUrl = serviceUrl;

    // *** Call a wrapped object
    this.invoke = function(method, data, callback, error, bare) {
        // *** Convert input data into JSON - REQUIRES Json2.js
        var json = JSON2.stringify(data);

        // *** The service endpoint URL        
        var url = _I.serviceUrl + method;

        $.ajax({
            url: url,
            data: json,
            type: "POST",
            processData: false,
            contentType: "application/json",
            timeout: 10000,
            dataType: "text",  // not "json" we'll parse
            success:
                    function(res) {
                        if (!callback) return;

                        // *** Use json library so we can fix up MS AJAX dates
                        var result = JSON2.parse(res);

                        // *** Bare message IS result
                        if (bare)
                        { callback(result); return; }

                        // *** Wrapped message contains top level object node
                        // *** strip it off
                        for (var property in result) {
                            callback(result[property]);
                            break;
                        }
                    },
            error: function(xhr) {
                if (!error) return;
                if (xhr.responseText) {
                    var err = null;
                    try{ var err = JSON2.parse(xhr.responseText); }
                    catch(e) { err = xhr.responseText;}
                    
                    if (err)
                        error(err);
                    else
                        error({ Message: "Unknown server error." })
                }
                return;
            }
        });
    }
}


if (!this.JSON2) {
    JSON2 = function() {
        function f(n) { return n < 10 ? '0' + n : n; }
        var escapeable = /["\\\x00-\x1f\x7f-\x9f]/g, gap, indent, meta = { '\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '"': '\\"', '\\': '\\\\' }, rep; function quote(string) {
            return escapeable.test(string) ? '"' + string.replace(escapeable, function(a) {
                var c = meta[a]; if (typeof c === 'string') { return c; }
                c = a.charCodeAt(); return '\\u00' + Math.floor(c / 16).toString(16) +
(c % 16).toString(16);
            }) + '"' : '"' + string + '"';
        }
        function str(key, holder) {
            var i, k, v, length, mind = gap, partial, value = holder[key]; if (value && typeof value === 'object' && typeof value.toJSON === 'function') { value = value.toJSON(key); }
            if (typeof rep === 'function') { value = rep.call(holder, key, value); }
            switch (typeof value) {
                case 'string': return quote(value); case 'number': return isFinite(value) ? String(value) : 'null'; case 'boolean': case 'null': return String(value); case 'object': if (!value) { return 'null'; }
                    if (value.toUTCString)
                    { var xx = '"\\/Date(' + value.getTime() + ')\\/"'; return xx; }
                    gap += indent; partial = []; if (typeof value.length === 'number' && !(value.propertyIsEnumerable('length'))) {
                        length = value.length; for (i = 0; i < length; i += 1) { partial[i] = str(i, value) || 'null'; }
                        v = partial.length === 0 ? '[]' : gap ? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']' : '[' + partial.join(',') + ']'; gap = mind; return v;
                    }
                    if (typeof rep === 'object') { length = rep.length; for (i = 0; i < length; i += 1) { k = rep[i]; if (typeof k === 'string') { v = str(k, value, rep); if (v) { partial.push(quote(k) + (gap ? ': ' : ':') + v); } } } } else { for (k in value) { v = str(k, value, rep); if (v) { partial.push(quote(k) + (gap ? ': ' : ':') + v); } } }
                    v = partial.length === 0 ? '{}' : gap ? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}' : '{' + partial.join(',') + '}'; gap = mind; return v;
            } 
        }
        return { stringify: function(value, replacer, space) {
            var i; gap = ''; indent = ''; if (space) { if (typeof space === 'number') { for (i = 0; i < space; i += 1) { indent += ' '; } } else if (typeof space === 'string') { indent = space; } }
            if (!replacer) {
                rep = function(key, value) {
                    if (!Object.hasOwnProperty.call(this, key)) { return undefined; }
                    return value;
                };
            } else if (typeof replacer === 'function' || (typeof replacer === 'object' && typeof replacer.length === 'number')) { rep = replacer; } else { throw new Error('JSON.stringify'); }
            return str('', { '': value });
        }, parse: function(text, reviver) {
            var j; function walk(holder, key) {
                var k, v, value = holder[key]; if (value && typeof value === 'object') { for (k in value) { if (Object.hasOwnProperty.call(value, k)) { v = walk(value, k); if (v !== undefined) { value[k] = v; } else { delete value[k]; } } } }
                return reviver.call(holder, key, value);
            }
            if (/^[\],:{}\s]*$/.test(text.replace(/\\["\\\/bfnrtu]/g, '@').replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']').replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) { var regEx = /(\"\d{4}-\d{2}-\d{2}T\d{2}:\d{2}.*?\")|(\"\\*\/Date\(.*?\)\\*\/")/g; text = text.replace(regEx, this.regExDate); j = eval('(' + text + ')'); return typeof reviver === 'function' ? walk({ '': j }, '') : j; }
            throw new SyntaxError('JSON.parse');
        }, regExDate: function(str, p1, p2, offset, s) {
            str = str.substring(1).replace('"', ''); var date = str; if (/\/Date(.*)\//.test(str)) { str = str.match(/Date\((.*?)\)/)[1]; date = "new Date(" + parseInt(str) + ")"; }
            else { var matches = str.split(/[-,:,T,Z]/); matches[1] = (parseInt(matches[1], 0) - 1).toString(); date = "new Date(Date.UTC(" + matches.join(",") + "))"; }
            return date;
        }, quote: quote
        };
    } ();
}

var _tmplCache = {}
this.parseTemplate = function(str, data) {
    /// <summary>
    /// Client side template parser that uses &lt;#= #&gt; and &lt;# code #&gt; expressions.
    /// and # # code blocks for template expansion.
    /// NOTE: chokes on single quotes in the document in some situations
    ///       use &amp;rsquo; for literals in text and avoid any single quote
    ///       attribute delimiters.
    /// </summary>    
    /// <param name="str" type="string">The text of the template to expand</param>    
    /// <param name="data" type="var">
    /// Any data that is to be merged. Pass an object and
    /// that object's properties are visible as variables.
    /// </param>    
    /// <returns type="string" />  
    var err = "";
    try {
        var func = _tmplCache[str];
        if (!func) {
            var strFunc =
            "var p=[],print=function(){p.push.apply(p,arguments);};" +
                        "with(obj){p.push('" +
            //                        str
            //                  .replace(/[\r\t\n]/g, " ")
            //                  .split("<#").join("\t")
            //                  .replace(/((^|#>)[^\t]*)'/g, "$1\r")
            //                  .replace(/\t=(.*?)#>/g, "',$1,'")
            //                  .split("\t").join("');")
            //                  .split("#>").join("p.push('")
            //                  .split("\r").join("\\'") + "');}return p.join('');";

            str.replace(/[\r\t\n]/g, " ")
               .replace(/'(?=[^#]*#>)/g, "\t")
               .split("'").join("\\'")
               .split("\t").join("'")
               .replace(/<#=(.+?)#>/g, "',$1,'")
               .split("<#").join("');")
               .split("#>").join("p.push('")
               + "');}return p.join('');";

            //alert(strFunc);
            func = new Function("obj", strFunc);
            _tmplCache[str] = func;
        }
        return func(data);
    } catch (e) { err = e.message; }
    return "< # ERROR: " + err + " # >";
}