/**
 * 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 should = require("should");
var when = require("when");
var sinon = require("sinon");
var path = require("path");

var NR_TEST_UTILS = require("nr-test-utils");

var localfilesystem = NR_TEST_UTILS.require("@node-red/registry/lib/localfilesystem");

var resourcesDir = path.resolve(path.join(__dirname,"resources","local"));
var userDir = path.resolve(path.join(__dirname,"resources","userDir"));
var moduleDir = path.resolve(path.join(__dirname,"resources","local","TestNodeModule"));

var i18n = NR_TEST_UTILS.require("@node-red/util").i18n;

describe("red/nodes/registry/localfilesystem",function() {
    beforeEach(function() {
        stubs.push(sinon.stub(i18n,"registerMessageCatalog", function() { return Promise.resolve(); }));
    })

    var stubs = [];
    afterEach(function() {
        while(stubs.length) {
            stubs.pop().restore();
        }
    })
    function checkNodes(nodes,shouldHaveNodes,shouldNotHaveNodes,module) {
        for (var i=0;i<shouldHaveNodes.length;i++) {
            nodes.should.have.a.property(shouldHaveNodes[i]);
            nodes[shouldHaveNodes[i]].should.have.a.property('file');
	        nodes[shouldHaveNodes[i]].file.should.equal(path.resolve(nodes[shouldHaveNodes[i]].file));
            nodes[shouldHaveNodes[i]].should.have.a.property('module',module||'node-red');
            nodes[shouldHaveNodes[i]].should.have.a.property('name',shouldHaveNodes[i]);
        }
        for (i=0;i<shouldNotHaveNodes.length;i++) {
            nodes.should.not.have.a.property(shouldNotHaveNodes[i]);
        }
    }
    describe("#getNodeFiles",function() {
        it("Finds all the node files in the resources tree",function(done) {
            localfilesystem.init({settings:{coreNodesDir:resourcesDir}});
            var nodeList = localfilesystem.getNodeFiles(true);
            nodeList.should.have.a.property("node-red");
            var nm = nodeList['node-red'];
            nm.should.have.a.property('name','node-red');
            nm.should.have.a.property("nodes");
            var nodes = nm.nodes;
            checkNodes(nm.nodes,['TestNode1','MultipleNodes1','NestedNode','TestNode2','TestNode3','TestNode4'],['TestNodeModule']);
            i18n.registerMessageCatalog.called.should.be.true();
            i18n.registerMessageCatalog.lastCall.args[0].should.eql('node-red');
            i18n.registerMessageCatalog.lastCall.args[1].should.eql(path.resolve(path.join(resourcesDir,"locales")));
            i18n.registerMessageCatalog.lastCall.args[2].should.eql('messages.json');
            done();
        });
        it("Includes node files from settings",function(done) {
            localfilesystem.init({settings:{nodesIncludes:['TestNode1.js'],coreNodesDir:resourcesDir}});
            var nodeList = localfilesystem.getNodeFiles(true);
            nodeList.should.have.a.property("node-red");
            var nm = nodeList['node-red'];
            nm.should.have.a.property('name','node-red');
            nm.should.have.a.property("nodes");
            checkNodes(nm.nodes,['TestNode1'],['MultipleNodes1','NestedNode','TestNode2','TestNode3','TestNode4','TestNodeModule']);
            done();
        });
        it("Excludes node files from settings",function(done) {
            localfilesystem.init({settings:{nodesExcludes:['TestNode1.js'],coreNodesDir:resourcesDir}});
            var nodeList = localfilesystem.getNodeFiles(true);
            nodeList.should.have.a.property("node-red");
            var nm = nodeList['node-red'];
            nm.should.have.a.property('name','node-red');
            nm.should.have.a.property("nodes");
            checkNodes(nm.nodes,['MultipleNodes1','NestedNode','TestNode2','TestNode3','TestNode4'],['TestNode1','TestNodeModule']);
            done();
        });
        it("Finds nodes in userDir/nodes",function(done) {
            localfilesystem.init({settings:{userDir:userDir}});
            var nodeList = localfilesystem.getNodeFiles(true);
            nodeList.should.have.a.property("node-red");
            var nm = nodeList['node-red'];
            nm.should.have.a.property('name','node-red');
            nm.should.have.a.property("nodes");
            checkNodes(nm.nodes,['TestNode5'],['TestNode1']);
            done();
        });

        it("Finds nodes in settings.nodesDir (string)",function(done) {
            localfilesystem.init({settings:{nodesDir:userDir}});
            var nodeList = localfilesystem.getNodeFiles(true);
            nodeList.should.have.a.property("node-red");
            var nm = nodeList['node-red'];
            nm.should.have.a.property('name','node-red');
            nm.should.have.a.property("nodes");
            checkNodes(nm.nodes,['TestNode5'],['TestNode1']);
            done();
        });
        it("Finds nodes in settings.nodesDir (string,relative path)",function(done) {
            var relativeUserDir = path.join("test","unit","@node-red","registry","lib","resources","userDir");
            localfilesystem.init({settings:{nodesDir:relativeUserDir}});
            var nodeList = localfilesystem.getNodeFiles(true);
            nodeList.should.have.a.property("node-red");
            var nm = nodeList['node-red'];
            nm.should.have.a.property('name','node-red');
            nm.should.have.a.property("nodes");
            checkNodes(nm.nodes,['TestNode5'],['TestNode1']);
            done();
        });
        it("Finds nodes in settings.nodesDir (array)",function(done) {
            localfilesystem.init({settings:{nodesDir:[userDir]}});
            var nodeList = localfilesystem.getNodeFiles(true);
            nodeList.should.have.a.property("node-red");
            var nm = nodeList['node-red'];
            nm.should.have.a.property('name','node-red');
            nm.should.have.a.property("nodes");
            checkNodes(nm.nodes,['TestNode5'],['TestNode1']);
            done();
        });
        it("Finds nodes module path",function(done) {
            var _join = path.join;
            stubs.push(sinon.stub(path,"join",function() {
                if (arguments[0] == resourcesDir) {
                    // This stops the module tree scan from going any higher
                    // up the tree than resourcesDir.
                    return arguments[0];
                }
                return _join.apply(null,arguments);
            }));
            localfilesystem.init({settings:{coreNodesDir:moduleDir}});
            var nodeList = localfilesystem.getNodeFiles();
            nodeList.should.have.a.property("node-red");
            var nm = nodeList['node-red'];
            // The `node-red` module is loaded differently to those scanned for
            // It doesn't get the `path` property set. Maybe it should.
            nm.should.have.a.property('name','node-red');
            nm.should.have.a.property("nodes");
            checkNodes(nm.nodes,[],['TestNode1']);

            nm = nodeList['TestNodeModule'];
            nm.should.have.a.property('path')
            nm.should.have.a.property('name','TestNodeModule');
            nm.should.have.a.property("nodes");
            checkNodes(nm.nodes,['TestNodeMod1','TestNodeMod2'],[],'TestNodeModule');

            nm = nodeList['VersionMismatchModule'];
            nm.should.have.a.property('path')
            nm.should.have.a.property('name','VersionMismatchModule');
            nm.should.have.a.property("nodes");
            checkNodes(nm.nodes,['VersionMismatchMod1','VersionMismatchMod2'],[],'VersionMismatchModule');

            i18n.registerMessageCatalog.called.should.be.true();
            i18n.registerMessageCatalog.lastCall.args[0].should.eql('node-red');
            i18n.registerMessageCatalog.lastCall.args[1].should.eql(path.resolve(path.join(moduleDir,"locales")));
            i18n.registerMessageCatalog.lastCall.args[2].should.eql('messages.json');



            done();
        });
        it.skip("finds locales directory");
        it.skip("finds icon path directory");
        it("scans icon files in the resources tree",function(done) {
            var count = 0;
            localfilesystem.init({

                // events:{emit:function(eventName,dir){
                //     if (count === 0) {
                //         eventName.should.equal("node-icon-dir");
                //         dir.name.should.equal("node-red");
                //         dir.icons.should.be.an.Array();
                //         count = 1;
                //     } else if (count === 1) {
                //         done();
                //     }
                // }},
                settings:{coreNodesDir:resourcesDir}
            });
            var list = localfilesystem.getNodeFiles(true);
            list.should.have.property("node-red");
            list["node-red"].should.have.property("icons");
            list["node-red"].icons.should.have.length(1);
            list["node-red"].icons[0].should.have.property("path",path.join(__dirname,"resources/local/NestedDirectoryNode/NestedNode/icons"))
            list["node-red"].icons[0].should.have.property("icons");
            list["node-red"].icons[0].icons.should.have.length(1);
            list["node-red"].icons[0].icons[0].should.eql("arrow-in.png");
            done();
        });
        it("scans icons dir in library",function(done) {
            var count = 0;
            localfilesystem.init({
                //
                // events:{emit:function(eventName,dir){
                //     eventName.should.equal("node-icon-dir");
                //     if (count === 0) {
                //         dir.name.should.equal("node-red");
                //         dir.icons.should.be.an.Array();
                //         count = 1;
                //     } else if (count === 1) {
                //         dir.name.should.equal("Library");
                //         dir.icons.should.be.an.Array();
                //         dir.icons.length.should.equal(1);
                //         dir.icons[0].should.be.equal("test_icon.png");
                //         done();
                //     }
                // }},
                settings:{userDir:userDir}
            });
            var list = localfilesystem.getNodeFiles(true);
            list.should.have.property("node-red");
            list["node-red"].should.have.property("icons");
            list["node-red"].icons.should.have.length(1);
            list["node-red"].icons[0].should.have.property("path",path.join(__dirname,"resources/userDir/lib/icons"))
            list["node-red"].icons[0].should.have.property("icons");
            list["node-red"].icons[0].icons.should.have.length(1);
            list["node-red"].icons[0].icons[0].should.eql("test_icon.png");
            done();
        });
    });
    describe("#getModuleFiles",function() {
        it("gets a nodes module files",function(done) {
            var _join = path.join;
            stubs.push(sinon.stub(path,"join",function() {
                if (arguments[0] == resourcesDir) {
                    // This stops the module tree scan from going any higher
                    // up the tree than resourcesDir.
                    return arguments[0];
                }
                return _join.apply(null,arguments);
            }));
            localfilesystem.init({settings:{coreNodesDir:moduleDir}});
            var nodeModule = localfilesystem.getModuleFiles('TestNodeModule');
            nodeModule.should.have.a.property('TestNodeModule');
            nodeModule['TestNodeModule'].should.have.a.property('name','TestNodeModule');
            nodeModule['TestNodeModule'].should.have.a.property('version','0.0.1');
            nodeModule['TestNodeModule'].should.have.a.property('nodes');
            nodeModule['TestNodeModule'].should.have.a.property('path');

            checkNodes(nodeModule['TestNodeModule'].nodes,['TestNodeMod1','TestNodeMod2'],[],'TestNodeModule');

            nodeModule = localfilesystem.getModuleFiles('VersionMismatchModule');
            nodeModule.should.have.a.property('VersionMismatchModule');
            nodeModule['VersionMismatchModule'].should.have.a.property('redVersion','100.0.0');

            done();
        });
        it("throws an error if a node isn't found",function(done) {
            var _join = path.join;
            stubs.push(sinon.stub(path,"join",function() {
                if (arguments[0] == resourcesDir) {
                    // This stops the module tree scan from going any higher
                    // up the tree than resourcesDir.
                    return arguments[0];
                }
                return _join.apply(null,arguments);
            }));
            localfilesystem.init({settings:{coreNodesDir:moduleDir}});
            /*jshint immed: false */
            (function(){
                localfilesystem.getModuleFiles('WontExistModule');
            }).should.throw();
            done();
        });
        it.skip("finds locales directory");
        it.skip("finds icon path directory");
        it("scans icon files with a module file",function(done) {
            var _join = path.join;
            stubs.push(sinon.stub(path,"join",function() {
                if (arguments[0] == resourcesDir) {
                    // This stops the module tree scan from going any higher
                    // up the tree than resourcesDir.
                    return arguments[0];
                }
                return _join.apply(null,arguments);
            }));
            localfilesystem.init({

                // events:{emit:function(eventName,dir){
                //     eventName.should.equal("node-icon-dir");
                //     dir.name.should.equal("TestNodeModule");
                //     dir.icons.should.be.an.Array();
                //     done();
                // }},
                settings:{coreNodesDir:moduleDir}
            });
            var nodeModule = localfilesystem.getModuleFiles('TestNodeModule');
            nodeModule.should.have.property("TestNodeModule");
            nodeModule.TestNodeModule.should.have.property('icons');

            nodeModule.TestNodeModule.icons.should.have.length(1);
            nodeModule.TestNodeModule.icons[0].should.have.property("path");
            nodeModule.TestNodeModule.icons[0].should.have.property("icons");
            nodeModule.TestNodeModule.icons[0].icons[0].should.eql("arrow-in.png");
            done();
        });
    });
});
