/**
 * Copyright 2014 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 should = require("should");
var sinon = require("sinon");
var when = require("when");
var util = require("util");

var express = require("express");
var request = require("supertest");

var index = require("../../../red/nodes/index");
var credentials = require("../../../red/nodes/credentials");
var log = require("../../../red/log");
var auth = require("../../../red/api/auth");


describe('Credentials', function() {
    
    afterEach(function() {
        index.clearRegistry();
    });
    
    it('loads from storage',function(done) {
        
        var storage = {
            getCredentials: function() {
                return when.promise(function(resolve,reject) {
                    resolve({"a":{"b":1,"c":2}});
                });
            }
        };
        
        credentials.init(storage);
        
        credentials.load().then(function() {
                
            credentials.get("a").should.have.property('b',1);
            credentials.get("a").should.have.property('c',2);
            
            done();
        });
    });
    
    it('saves to storage', function(done) {
        var storage = {
            saveCredentials: function(creds) {
                return when.resolve("saveCalled");
            }
        };
        credentials.init(storage);
        credentials.save().then(function(res) {
            res.should.equal("saveCalled");
            done();
        });
    });   
    
    it('saves to storage when new cred added', function(done) {
        var storage = {
            getCredentials: function() {
                return when.promise(function(resolve,reject) {
                    resolve({"a":{"b":1,"c":2}});
                });
            },
            saveCredentials: function(creds) {
                return when(true);
            }
        };
        sinon.spy(storage,"saveCredentials");
        credentials.init(storage);
        credentials.load().then(function() {
            should.not.exist(credentials.get("b"))
            credentials.add('b',{"d":3});
            storage.saveCredentials.callCount.should.be.exactly(1);
            credentials.get("b").should.have.property('d',3);
            storage.saveCredentials.restore();
            done();
        });
    });
    
    it('deletes from storage', function(done) {
        var storage = {
            getCredentials: function() {
                return when.promise(function(resolve,reject) {
                    resolve({"a":{"b":1,"c":2}});
                });
            },
            saveCredentials: function(creds) {
                return when(true);
            }
        };
        sinon.spy(storage,"saveCredentials");
        credentials.init(storage);
        credentials.load().then(function() {
            should.exist(credentials.get("a"))
            credentials.delete('a');
            storage.saveCredentials.callCount.should.be.exactly(1);
            should.not.exist(credentials.get("a"));
            storage.saveCredentials.restore();
            done();
        });
            
    });
            
    it('clean up from storage', function(done) {
        var storage = {
            getCredentials: function() {
                return when.promise(function(resolve,reject) {
                    resolve({"a":{"b":1,"c":2}});
                });
            },
            saveCredentials: function(creds) {
                return when(true);
            }
        };
        sinon.spy(storage,"saveCredentials");
        credentials.init(storage);
        credentials.load().then(function() {
            should.exist(credentials.get("a"));
            credentials.clean([]);
            storage.saveCredentials.callCount.should.be.exactly(1);
            should.not.exist(credentials.get("a"));
            storage.saveCredentials.restore();
            done();
        });
    });
    
    it('handle error loading from storage', function(done) {
        var storage = {
            getCredentials: function() {
                return when.promise(function(resolve,reject) {
                    reject("test forcing failure");
                });
            },
            saveCredentials: function(creds) {
                return when(true);
            }
        };
        var logmsg = 'nothing logged yet';
        sinon.stub(log, 'warn', function(msg) {
            logmsg = msg;
        });
        
        credentials.init(storage);
        credentials.load().then(function() {
            logmsg.should.equal("Error loading credentials : test forcing failure");
            log.warn.restore();
            done();
        }).otherwise(function(err){
            log.warn.restore();
            done(err);
        });
    });
    
    it('credential type is not registered when extract', function(done) {
        var testFlows = [{"type":"test","id":"tab1","label":"Sheet 1"}];
        var storage = {
                getFlows: function() {
                    var defer = when.defer();
                    defer.resolve(testFlows);
                    return defer.promise;
                },
                getCredentials: function() {
                    return when.promise(function(resolve,reject) {
                        resolve({"tab1":{"b":1,"c":2}});
                    });
                },
                saveFlows: function(conf) {
                    var defer = when.defer();
                    defer.resolve();
                    should.deepEqual(testFlows, conf);
                    return defer.promise;
                },
                saveCredentials: function(creds) {
                    return when(true);
                },
                getSettings: function() {
                    return when({});
                },
                saveSettings: function(s) {
                    return when();
                }
        };
        function TestNode(n) {
            index.createNode(this, n);
            
            this.id = 'tab1';
            this.type = 'test';
            this.name = 'barney';
            var node = this;

            this.on("log", function() {
                // do nothing
            });
        }
        var logmsg = 'nothing logged yet';
        sinon.stub(log, 'warn', function(msg) {
            logmsg = msg;
        });
        var settings = {
            available: function() { return false;}
        }
        index.init(settings, storage);
        index.registerType('test', TestNode);   
        index.loadFlows().then(function() {
            var testnode = new TestNode({id:'tab1',type:'test',name:'barney'});   
            credentials.extract(testnode);
            should.equal(logmsg, 'Credential Type test is not registered.');
            log.warn.restore();
            done();
        }).otherwise(function(err){
            log.warn.restore();
            done(err);
        });
    });
    
    it('extract and store credential updates in the provided node', function(done) {
        credentials.init({saveCredentials:function(){}},express());
        credentials.register("test",{
            user1:{type:"text"},
            password1:{type:"password"},
            user2:{type:"text"},
            password2:{type:"password"},
            user3:{type:"text"},
            password3:{type:"password"}
            
        });
        credentials.add("node",{user1:"abc",password1:"123",user2:"def",password2:"456",user3:"ghi",password3:"789"});
        var node = {id:"node",type:"test",credentials:{
            // user1 unchanged
            password1:"__PWRD__",
            user2: "",
            password2:"   ",
            user3:"newUser",
            password3:"newPassword"
        }};
        credentials.extract(node);
        
        node.should.not.have.a.property("credentials");
        
        var newCreds = credentials.get("node");
        newCreds.should.have.a.property("user1","abc");
        newCreds.should.have.a.property("password1","123");
        newCreds.should.not.have.a.property("user2");
        newCreds.should.not.have.a.property("password2");
        newCreds.should.have.a.property("user3","newUser");
        newCreds.should.have.a.property("password3","newPassword");
        
        done();
    });
    
    describe('registerEndpoint',function() {
        it('returns empty credentials if none are stored',function(done) {
            auth.init({});
            var app = express();
            credentials.init({saveCredentials:function(){}},app);
            credentials.register("test",{
                user1:{type:"text"},
                password1:{type:"password"},
                user2:{type:"text"},
                password2:{type:"password"},
                user3:{type:"text"},
                password3:{type:"password"}
                
            });
            request(app)
                .get("/credentials/test/123")
                .expect("Content-Type",/json/)
                .end(function(err,res) {
                    if (err) {
                        done(err);
                    } else {
                        try {
                            res.body.should.eql({});
                            done();
                        } catch(e) {
                            done(e);
                        }
                    }
                })
        });
        it('returns stored credentials',function(done) {
            auth.init({});
            var app = express();
            credentials.init({saveCredentials:function(){}},app);
            credentials.register("test",{
                user1:{type:"text"},
                password1:{type:"password"},
                user2:{type:"text"},
                password2:{type:"password"},
                user3:{type:"text"},
                password3:{type:"password"}
                
            });
            credentials.add("node",{user1:"abc",password1:"123",user2:"def",password2:"456",user3:"ghi",password3:"789"});
            request(app)
                .get("/credentials/test/node")
                .expect("Content-Type",/json/)
                .end(function(err,res) {
                    if (err) {
                        done(err);
                    } else {
                        try {
                            res.body.should.have.a.property("user1","abc");
                            res.body.should.have.a.property("user2","def");
                            res.body.should.have.a.property("user3","ghi");
                            res.body.should.have.a.property("has_password1",true);
                            res.body.should.have.a.property("has_password2",true);
                            res.body.should.have.a.property("has_password3",true);
                            res.body.should.not.have.a.property("password1");
                            res.body.should.not.have.a.property("password2");
                            res.body.should.not.have.a.property("password3");
                            done();
                        } catch(e) {
                            done(e);
                        }
                    }
                })
        });
            
    });

    //describe('registerEndpoint', function() {
    //    var path = require('path');
    //    var fs = require('fs-extra');
    //    var http = require('http');
    //    var express = require('express');
    //    var request = require('supertest');
    //    
    //    var server = require("../../../red/server");
    //    var localfilesystem = require("../../../red/storage/localfilesystem");
    //    var app = express();
    //    var RED = require("../../../red/red.js");
    //    
    //    var userDir = path.join(__dirname,".testUserHome");
    //    before(function(done) {
    //        fs.remove(userDir,function(err) {
    //            fs.mkdir(userDir,function() {
    //                sinon.stub(index, 'load', function() {
    //                    return when.promise(function(resolve,reject){
    //                        resolve([]);
    //                    });
    //                });
    //                sinon.stub(localfilesystem, 'getCredentials', function() {
    //                     return when.promise(function(resolve,reject) {
    //                            resolve({"tab1":{"foo": 2, "pswd":'sticks'}});
    //                     });
    //                }) ;
    //                RED.init(http.createServer(function(req,res){app(req,res)}),
    //                         {userDir: userDir});
    //                server.start().then(function () {
    //                    done(); 
    //                 });
    //            });
    //        });
    //    });
    //
    //    after(function(done) {
    //        fs.remove(userDir,done);
    //        server.stop();
    //        index.load.restore();
    //        localfilesystem.getCredentials.restore();
    //    });
    //
    //    function TestNode(n) {
    //        index.createNode(this, n);
    //        var node = this;
    //        this.on("log", function() {
    //            // do nothing
    //        });
    //    }
    //    
    //    it(': valid credential type', function(done) {
    //        index.registerType('test', TestNode, {
    //            credentials: {
    //                foo: {type:"test"}
    //            }
    //        });   
    //        index.loadFlows().then(function() {
    //            var testnode = new TestNode({id:'tab1',type:'foo',name:'barney'});   
    //            request(RED.httpAdmin).get('/credentials/test/tab1').expect(200).end(function(err,res) {
    //                if (err) {
    //                    done(err);
    //                }
    //                res.body.should.have.property('foo', 2);
    //                done();
    //            });              
    //        }).otherwise(function(err){
    //            done(err);
    //        });
    //    });
    //    
    //    it(': password credential type', function(done) {
    //        index.registerType('password', TestNode, {
    //            credentials: {
    //                pswd: {type:"password"}
    //            }
    //        });   
    //        index.loadFlows().then(function() {
    //            var testnode = new TestNode({id:'tab1',type:'pswd',name:'barney'});   
    //            request(RED.httpAdmin).get('/credentials/password/tab1').expect(200).end(function(err,res) {
    //                if (err) {
    //                    done(err);
    //                }
    //                res.body.should.have.property('has_pswd', true);
    //                res.body.should.not.have.property('pswd');
    //                done();
    //            });              
    //        }).otherwise(function(err){
    //            done(err);
    //        });
    //    });    
    //    
    //    it(': returns 404 for undefined credential type', function(done) {
    //        index.registerType('test', TestNode, {
    //            credentials: {
    //                foo: {type:"test"}
    //            }
    //        });   
    //        index.loadFlows().then(function() {
    //            var testnode = new TestNode({id:'tab1',type:'foo',name:'barney'});   
    //            request(RED.httpAdmin).get('/credentials/unknownType/tab1').expect(404).end(done);              
    //        }).otherwise(function(err){
    //            done(err);
    //        });
    //    });
    //    
    //    it(': undefined nodeID', function(done) {
    //        index.registerType('test', TestNode, {
    //            credentials: {
    //                foo: {type:"test"}
    //            }
    //        });   
    //        index.loadFlows().then(function() {
    //            var testnode = new TestNode({id:'tab1',type:'foo',name:'barney'});   
    //            request(RED.httpAdmin).get('/credentials/test/unknownNode').expect(200).end(function(err,res) {
    //                if (err) {
    //                    done(err);
    //                }
    //                var b = res.body;
    //                res.body.should.not.have.property('foo');
    //                done();
    //            });              
    //        }).otherwise(function(err){
    //            done(err);
    //        });
    //    });
    //    
    //})        
    
})