# all files / red/api/editor/ library.js

81.32% Statements 74/91
64.29% Branches 18/28
100% Functions 16/16
81.32% Lines 74/91

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     /**
     * Copyright JS Foundation and other contributors, http://js.foundation
     *
     * 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.
     **/
    var fs = require('fs');
    var fspath = require('path');
    var when = require('when');

    var redApp = null;
    var storage;
    var log;
    var redNodes;
    var needsPermission = require("../auth").needsPermission;

    function createLibrary(type) {
        Eif (redApp) {
            redApp.get(new RegExp("/library/"+type+"($|\/(.*))"),needsPermission("library.read"),function(req,res) {
                var path = req.params[1]||"";
                storage.getLibraryEntry(type,path).then(function(result) {
                    log.audit({event: "library.get",type:type},req);
                    if (typeof result === "string") {
                        res.writeHead(200, {'Content-Type': 'text/plain'});
                        res.write(result);
                        res.end();
                    } else {
                        res.json(result);
                    }
                }).otherwise(function(err) {
                    if (err) {
                        log.warn(log._("api.library.error-load-entry",{path:path,message:err.toString()}));
                        Eif (err.code === 'forbidden') {
                            log.audit({event: "library.get",type:type,error:"forbidden"},req);
                            res.status(403).end();
                            return;
                        }
                    }
                    log.audit({event: "library.get",type:type,error:"not_found"},req);
                    res.status(404).end();
                });
            });

            redApp.post(new RegExp("/library/"+type+"\/(.*)"),needsPermission("library.write"),function(req,res) {
                var path = req.params[0];
                var meta = req.body;
                var text = meta.text;
                delete meta.text;

                storage.saveLibraryEntry(type,path,meta,text).then(function() {
                    log.audit({event: "library.set",type:type},req);
                    res.status(204).end();
                }).otherwise(function(err) {
                    log.warn(log._("api.library.error-save-entry",{path:path,message:err.toString()}));
                        Eif (err.code === 'forbidden') {
                        log.audit({event: "library.set",type:type,error:"forbidden"},req);
                        res.status(403).end();
                        return;
                    }
                    log.audit({event: "library.set",type:type,error:"unexpected_error",message:err.toString()},req);
                    res.status(500).json({error:"unexpected_error", message:err.toString()});
                });
            });
        }
    }

    module.exports = {
        init: function(app,runtime) {
            redApp = app;
            log = runtime.log;
            storage = runtime.storage;
            redNodes = runtime.nodes;
        },
        register: createLibrary,

        getAll: function(req,res) {
            storage.getAllFlows().then(function(flows) {
                log.audit({event: "library.get.all",type:"flow"},req);
                var examples = redNodes.getNodeExampleFlows();
                if (examples) {
                    flows.d = flows.d||{};
                    flows.d._examples_ = redNodes.getNodeExampleFlows();
                }
                res.json(flows);
            });
        },
        get: function(req,res) {
            Iif (req.params[0].indexOf("_examples_/") === 0) {
                var m = /^_examples_\/([^\/]+)\/(.*)$/.exec(req.params[0]);
                if (m) {
                    var module = m[1];
                    var path = m[2];
                    var fullPath = redNodes.getNodeExampleFlowPath(module,path);
                    if (fullPath) {
                        try {
                            fs.statSync(fullPath);
                            log.audit({event: "library.get",type:"flow",path:req.params[0]},req);
                            return res.sendFile(fullPath,{
                                headers:{
                                    'Content-Type': 'application/json'
                                }
                            })
                        } catch(err) {
                            console.log(err);
                        }
                    }
                }
                // IF we get here, we didn't find the file
                log.audit({event: "library.get",type:"flow",path:req.params[0],error:"not_found"},req);
                return res.status(404).end();
            } else {
                storage.getFlow(req.params[0]).then(function(data) {
                    // data is already a JSON string
                    log.audit({event: "library.get",type:"flow",path:req.params[0]},req);
                    res.set('Content-Type', 'application/json');
                    res.send(data);
                }).otherwise(function(err) {
                    if (err) {
                        log.warn(log._("api.library.error-load-flow",{path:req.params[0],message:err.toString()}));
                        Eif (err.code === 'forbidden') {
                            log.audit({event: "library.get",type:"flow",path:req.params[0],error:"forbidden"},req);
                            res.status(403).end();
                            return;
                        }
                    }
                    log.audit({event: "library.get",type:"flow",path:req.params[0],error:"not_found"},req);
                    res.status(404).end();
                });
            }
        },
        post: function(req,res) {
            // if (req.params[0].indexOf("_examples_/") === 0) {
            //     log.warn(log._("api.library.error-save-flow",{path:req.params[0],message:"forbidden"}));
            //     log.audit({event: "library.set",type:"flow",path:req.params[0],error:"forbidden"},req);
            //     return res.status(403).send({error:"unexpected_error", message:"forbidden"});
            // }
            var flow = JSON.stringify(req.body);
            storage.saveFlow(req.params[0],flow).then(function() {
                log.audit({event: "library.set",type:"flow",path:req.params[0]},req);
                res.status(204).end();
            }).otherwise(function(err) {
                log.warn(log._("api.library.error-save-flow",{path:req.params[0],message:err.toString()}));
                Eif (err.code === 'forbidden') {
                    log.audit({event: "library.set",type:"flow",path:req.params[0],error:"forbidden"},req);
                    res.status(403).end();
                    return;
                }
                log.audit({event: "library.set",type:"flow",path:req.params[0],error:"unexpected_error",message:err.toString()},req);
                res.status(500).send({error:"unexpected_error", message:err.toString()});
            });
        }
    }