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

var Users = require("../../../../red/api/auth/users");

describe("Users", function() {
    describe('Initalised with a credentials object, no anon',function() {
        before(function() {
            Users.init({
                type:"credentials",
                users:[{
                    username:"fred",
                    password:"5f4dcc3b5aa765d61d8327deb882cf99", // 'password'
                    permissions:"*"
                }]
            });
        });
        describe('#get',function() {
            it('returns known user',function(done) {
                Users.get("fred").then(function(user) {
                    try {
                        user.should.have.a.property("username","fred");
                        user.should.have.a.property("permissions","*");
                        user.should.not.have.a.property("password");
                        done();
                    } catch(err) {
                        done(err);
                    }
                });
            });
            
            it('returns null for unknown user', function(done) {
                Users.get("barney").then(function(user) {
                    try {
                        should.not.exist(user);
                        done();
                    } catch(err) {
                        done(err);
                    }
                });
            });
        });
        
        describe('#default',function() {
            it('returns null for default user', function(done) {
                Users.default().then(function(user) {
                    try {
                        should.not.exist(user);
                        done();
                    } catch(err) {
                        done(err);
                    }
                });
            });
        });
        
        describe('#authenticate',function() {
   
            it('authenticates a known user', function(done) {
                Users.authenticate('fred','password').then(function(user) {
                    try {
                        user.should.have.a.property("username","fred");
                        user.should.have.a.property("permissions","*");
                        user.should.not.have.a.property("password");
                        done();
                    } catch(err) {
                        done(err);
                    }
                });
            });
            it('rejects invalid password for a known user', function(done) {
                Users.authenticate('fred','wrong').then(function(user) {
                    try {
                        should.not.exist(user);
                        done();
                    } catch(err) {
                        done(err);
                    }
                });
            });
            
            it('rejects invalid user', function(done) {
                Users.authenticate('barney','wrong').then(function(user) {
                    try {
                        should.not.exist(user);
                        done();
                    } catch(err) {
                        done(err);
                    }
                });
            });
        });
    });
    
    
    describe('Initalised with a credentials object including anon',function() {
        before(function() {
            Users.init({
                type:"credentials",
                users:[],
                default: { permissions: "*" }
            });
        });
        describe('#default',function() {
            it('returns default user', function(done) {
                Users.default().then(function(user) {
                    try {
                        user.should.have.a.property('anonymous',true);
                        user.should.have.a.property('permissions','*');
                        done();
                    } catch(err) {
                        done(err);
                    }
                });
            });
        });
    });
    
   describe('Initialised with a credentials object with user functions',function() {
       var authUsername = '';
       var authPassword = '';
       before(function() {
           Users.init({
               type:"credentials",
               users:function(username) {
                   return when.resolve({'username':'dave','permissions':'read'});
               },
               authenticate: function(username,password) {
                   authUsername = username;
                   authPassword = password;
                   return when.resolve({'username':'pete','permissions':'write'});
               }
           });
       });
       
        describe('#get',function() {
            it('delegates get user',function(done) {
                Users.get('dave').then(function(user) {
                    try {
                        user.should.have.a.property("username","dave");
                        user.should.have.a.property("permissions","read");
                        user.should.not.have.a.property("password");
                        done();
                    } catch(err) {
                        done(err);
                    }
                });
            });
            it('delegates authenticate user',function(done) {
                Users.authenticate('pete','secret').then(function(user) {
                    try {
                        user.should.have.a.property("username","pete");
                        user.should.have.a.property("permissions","write");
                        user.should.not.have.a.property("password");
                        authUsername.should.equal('pete');
                        authPassword.should.equal('secret');
                        done();
                    } catch(err) {
                        done(err);
                    }
                });
            });
        });
        
        
        
   });
});