From fd2e47ed73ee6342f3d9988827a818f28e62a0e6 Mon Sep 17 00:00:00 2001
From: Nick O'Leary <nick.oleary@gmail.com>
Date: Sun, 6 Dec 2015 22:49:51 +0000
Subject: [PATCH] WIP: add flow api

---
 red/api/flow.js                            | 32 ++++++++
 red/api/index.js                           |  4 +
 red/runtime/nodes/flows/index.js           | 87 +++++++++++++++++++++-
 red/runtime/nodes/index.js                 | 16 +++-
 test/red/runtime/nodes/flows/index_spec.js | 70 +++++++++++++++++
 5 files changed, 203 insertions(+), 6 deletions(-)
 create mode 100644 red/api/flow.js

diff --git a/red/api/flow.js b/red/api/flow.js
new file mode 100644
index 000000000..d9e71964a
--- /dev/null
+++ b/red/api/flow.js
@@ -0,0 +1,32 @@
+/**
+ * Copyright 2014, 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.
+ **/
+
+var log;
+var redNodes;
+var settings;
+
+module.exports = {
+    init: function(runtime) {
+        settings = runtime.settings;
+        redNodes = runtime.nodes;
+        log = runtime.log;
+    },
+    get: function(req,res) {
+        var id = req.params.id;
+        log.audit({event: "flow.get"},req);
+        res.json(redNodes.getFlow(id));
+    }
+}
diff --git a/red/api/index.js b/red/api/index.js
index 9dd495801..d71f8ad9d 100644
--- a/red/api/index.js
+++ b/red/api/index.js
@@ -24,6 +24,7 @@ var when = require('when');
 var ui = require("./ui");
 var nodes = require("./nodes");
 var flows = require("./flows");
+var flow = require("./flow");
 var library = require("./library");
 var info = require("./info");
 var theme = require("./theme");
@@ -64,6 +65,7 @@ function init(_server,runtime) {
         auth.init(runtime);
         credentials.init(runtime);
         flows.init(runtime);
+        flow.init(runtime);
         info.init(runtime);
         library.init(adminApp,runtime);
         locales.init(runtime);
@@ -103,6 +105,8 @@ function init(_server,runtime) {
         adminApp.get("/flows",needsPermission("flows.read"),flows.get);
         adminApp.post("/flows",needsPermission("flows.write"),flows.post);
 
+        adminApp.get("/flow/:id",needsPermission("flows.read"),flow.get);
+
         // Nodes
         adminApp.get("/nodes",needsPermission("nodes.read"),nodes.getAll);
         adminApp.post("/nodes",needsPermission("nodes.write"),nodes.post);
diff --git a/red/runtime/nodes/flows/index.js b/red/runtime/nodes/flows/index.js
index 0c17b1500..c9d68c107 100644
--- a/red/runtime/nodes/flows/index.js
+++ b/red/runtime/nodes/flows/index.js
@@ -352,6 +352,81 @@ function checkTypeInUse(id) {
     }
 }
 
+function addFlow(flow) {
+    /*
+    {
+        id:'',
+        label:'',
+        nodes:[]
+    }
+
+    */
+
+    // flow.id should not exist - it will be assigned by the runtime
+    // all flow.{subflows|configs|nodes}.z will be set to flow.id
+    // all nodes will have new ids assigned if there is a clash
+    // check all known types - fail if otherwise?
+    //
+    // resolves with generated flow id
+
+    return when.promise(function(resolve,reject) {
+        var i,id,node;
+
+        flow.id = redUtil.generateId();
+
+        for (i=0;i<flow.nodes.length;i++) {
+            node = flow.nodes[i];
+            if (activeFlowConfig.allNodes[node.id]) {
+                // TODO nls
+                return reject(new Error('duplicate id'));
+            }
+            node.z = flow.id;
+        }
+        var tabNode = {
+            type:'tab',
+            label:flow.label,
+            id:flow.id
+        }
+        var nodes = [tabNode].concat(flow.nodes);
+        var parsedConfig = flowUtil.parseConfig(clone(nodes));
+        // TODO: handle unknown type
+        for (id in parsedConfig.flows[flow.id]) {
+            if (parsedConfig.flows[flow.id].hasOwnProperty(id)) {
+                activeFlowConfig.allNodes[id] = parsedConfig.flows[flow.id][id];
+            }
+        }
+        activeFlowConfig.flows[flow.id] = parsedConfig.flows[flow.id];
+
+        activeConfig = activeConfig.concat(nodes);
+        // TODO: extract creds
+        // TODO: save config
+
+        start("flows",{added:flow.nodes.map(function(n) { return n.id})}).then(function() {
+            // console.log(activeFlowConfig);
+            resolve(flow.id);
+        })
+    })
+}
+
+function getFlow(id) {
+    var flow = activeFlowConfig.flows[id];
+    if (!flow) {
+        return null;
+    }
+    var result = {
+        id: id,
+        label: flow.label,
+        nodes: []
+    };
+
+    for (var i=0;i<activeConfig.length;i++) {
+        if (activeConfig[i].z === id && activeConfig[i].type != 'tab') {
+            result.nodes.push(activeConfig[i]);
+        }
+    }
+    return result;
+}
+
 module.exports = {
     init: init,
 
@@ -388,11 +463,19 @@ module.exports = {
      */
     stopFlows: stop,
 
-    started: function() { return started },
+    get started() { return started },
 
     handleError: handleError,
     handleStatus: handleStatus,
 
-    checkTypeInUse: checkTypeInUse
+    checkTypeInUse: checkTypeInUse,
+
+
+    addFlow: addFlow,
+    getFlow: getFlow,
+    updateFlow:null,
+    removeFlow:null,
+    disableFlow:null,
+    enableFlow:null
 
 };
diff --git a/red/runtime/nodes/index.js b/red/runtime/nodes/index.js
index 371e4cead..795a150da 100644
--- a/red/runtime/nodes/index.js
+++ b/red/runtime/nodes/index.js
@@ -120,11 +120,19 @@ module.exports = {
     cleanModuleList: registry.cleanModuleList,
 
     // Flow handling
-    loadFlows: flows.load,
+    loadFlows:  flows.load,
     startFlows: flows.startFlows,
-    stopFlows: flows.stopFlows,
-    setFlows: flows.setFlows,
-    getFlows: flows.getFlows,
+    stopFlows:  flows.stopFlows,
+    setFlows:   flows.setFlows,
+    getFlows:   flows.getFlows,
+
+    addFlow:     flows.addFlow,
+    getFlow:     flows.getFlow,
+    updateFlow:  flows.updateFlow,
+    removeFlow:  flows.removeFlow,
+    disableFlow: flows.disableFlow,
+    enableFlow:  flows.enableFlow,
+
 
     // Credentials
     addCredentials: credentials.add,
diff --git a/test/red/runtime/nodes/flows/index_spec.js b/test/red/runtime/nodes/flows/index_spec.js
index 57ee418da..1d3af9a98 100644
--- a/test/red/runtime/nodes/flows/index_spec.js
+++ b/test/red/runtime/nodes/flows/index_spec.js
@@ -497,4 +497,74 @@ describe('flows/index', function() {
             });
         });
     });
+
+    describe('#addFlow', function() {
+        it("rejects duplicate node id",function(done) {
+            var originalConfig = [
+                {id:"t1-1",x:10,y:10,z:"t1",type:"test",wires:[]},
+                {id:"t1",type:"tab"}
+            ];
+            storage.getFlows = function() {
+                return when.resolve(originalConfig);
+            }
+            flows.init({},storage);
+            flows.load().then(function() {
+                flows.addFlow({
+                    label:'new flow',
+                    nodes:[
+                        {id:"t1-1",x:10,y:10,z:"t1",type:"test",wires:[]}
+                    ]
+                }).then(function() {
+                    done(new Error('failed to reject duplicate node id'));
+                }).otherwise(function(err) {
+                    done();
+                })
+            });
+
+        });
+
+        it("addFlow",function(done) {
+            var originalConfig = [
+                {id:"t1-1",x:10,y:10,z:"t1",type:"test",wires:[]},
+                {id:"t1",type:"tab"}
+            ];
+            storage.getFlows = function() {
+                return when.resolve(originalConfig);
+            }
+            flows.init({},storage);
+            flows.load().then(function() {
+                return flows.startFlows();
+            }).then(function() {
+                flows.addFlow({
+                    label:'new flow',
+                    nodes:[
+                        {id:"t2-1",x:10,y:10,z:"t1",type:"test",wires:[]},
+                        {id:"t2-2",x:10,y:10,z:"t1",type:"test",wires:[]},
+                        {id:"t2-3",z:"t1",type:"test"}
+                    ]
+                }).then(function(id) {
+                    flows.getFlows().should.have.lengthOf(6);
+                    var createdFlows = Object.keys(flowCreate.flows);
+                    createdFlows.should.have.lengthOf(3);
+                    createdFlows[2].should.eql(id);
+                    done();
+                }).otherwise(function(err) {
+                    done(err);
+                })
+            });
+
+        });
+    })
+    describe('#updateFlow', function() {
+        it.skip("updateFlow");
+    })
+    describe('#removeFlow', function() {
+        it.skip("removeFlow");
+    })
+    describe('#disableFlow', function() {
+        it.skip("disableFlow");
+    })
+    describe('#enableFlow', function() {
+        it.skip("enableFlow");
+    })
 });