/**
 * Copyright 2013, 2015 IBM Corp.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/
RED.sidebar.info = (function() {

    marked.setOptions({
        renderer: new marked.Renderer(),
        gfm: true,
        tables: true,
        breaks: false,
        pedantic: false,
        sanitize: true,
        smartLists: true,
        smartypants: false
    });

    var content = document.createElement("div");
    content.id = "tab-info";
    content.style.paddingTop = "4px";
    content.style.paddingLeft = "4px";
    content.style.paddingRight = "4px";

    function show() {
        if (!RED.sidebar.containsTab("info")) {
            RED.sidebar.addTab("info",content,false);
        }
        RED.sidebar.show("info");
    }

    function jsonFilter(key,value) {
        if (key === "") {
            return value;
        }
        var t = typeof value;
        if ($.isArray(value)) {
            return "[array:"+value.length+"]";
        } else if (t === "object") {
            return "[object]"
        } else if (t === "string") {
            if (value.length > 30) {
                return value.substring(0,30)+" ...";
            }
        }
        return value;
    }

    function refresh(node) {
        var table = '<table class="node-info"><tbody>';
        table += '<tr class="blank"><td colspan="2">Node</td></tr>';
        table += "<tr><td>Type</td><td>&nbsp;"+node.type+"</td></tr>";
        table += "<tr><td>ID</td><td>&nbsp;"+node.id+"</td></tr>";
        
        var m = /^subflow(:(.+))?$/.exec(node.type);
        if (m) {
            var subflowNode;
            if (m[2]) {
                subflowNode = RED.nodes.subflow(m[2]);
            } else {
                subflowNode = node;
            }
            
            table += '<tr class="blank"><td colspan="2">Subflow</td></tr>';
            
            var userCount = 0;
            var subflowType = "subflow:"+subflowNode.id;
            RED.nodes.eachNode(function(n) {
                if (n.type === subflowType) {
                    userCount++;
                }
            });
            table += "<tr><td>name</td><td>"+subflowNode.name+"</td></tr>";
            table += "<tr><td>instances</td><td>"+userCount+"</td></tr>";
        }
        
        if (node.type != "subflow" && node.type != "comment") {
            table += '<tr class="blank"><td colspan="2">Properties</td></tr>';
            if (node._def) {
                for (var n in node._def.defaults) {
                    if (node._def.defaults.hasOwnProperty(n)) {
                        var val = node[n]||"";
                        var type = typeof val;
                        if (type === "string") {
                            if (val.length > 30) {
                                val = val.substring(0,30)+" ...";
                            }
                            val = val.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;");
                        } else if (type === "number") {
                            val = val.toString();
                        } else if ($.isArray(val)) {
                            val = "[<br/>";
                            for (var i=0;i<Math.min(node[n].length,10);i++) {
                                var vv = JSON.stringify(node[n][i],jsonFilter," ").replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;");
                                val += "&nbsp;"+i+": "+vv+"<br/>";
                            }
                            if (node[n].length > 10) {
                                val += "&nbsp;... "+node[n].length+" items<br/>";
                            }
                            val += "]";
                        } else {
                            val = JSON.stringify(val,jsonFilter," ");
                            val = val.replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;");
                        }
    
                        table += "<tr><td>"+n+"</td><td>"+val+"</td></tr>";
                    }
                }
            }
        }
        table += "</tbody></table><br/>";
        if (node.type != "comment") {
            var helpText = $("script[data-help-name|='"+node.type+"']").html()||"";
            table  += '<div class="node-help">'+helpText+"</div>";
        }

        if (node._def && node._def.info) {
            var info = node._def.info;
            table += '<div class="node-help">'+marked(typeof info === "function" ? info.call(node) : info)+'</div>';
            //table += '<div class="node-help">'+(typeof info === "function" ? info.call(node) : info)+'</div>';
        }

        $("#tab-info").html(table);
    }
    
    function clear() {
        $("#tab-info").html("");
    }
    
    RED.view.on("selection-changed",function(selection) {
        if (selection.nodes) {
            if (selection.nodes.length == 1) {
                var node = selection.nodes[0];
                if (node.type === "subflow" && node.direction) {
                    refresh(RED.nodes.subflow(node.z));
                } else {
                    refresh(node);
                }
            }
        } else {
            var subflow = RED.nodes.subflow(RED.view.getWorkspace());
            if (subflow) {
                refresh(subflow);
            } else {
                clear();
            }
        }
    });

    return {
        show: show,
        refresh:refresh,
        clear: clear
    }
})();