/*globals describe, beforeEach, it*/

(function () {
    "use strict";

    var _ = require("underscore"),
        when = require('when'),
        should = require('should'),
        sinon = require('sinon'),
        errors = require('../../shared/errorHandling'),
        helpers = require('./helpers'),
        permissions = require('../../shared/permissions'),
        Models = require('../../shared/models'),
        UserProvider = Models.User,
        PermissionsProvider = Models.Permission,
        PostProvider = Models.Post;

    describe('permissions', function () {

        should.exist(permissions);

        beforeEach(function (done) {
            helpers.resetData().then(function (result) {
                return when(helpers.insertDefaultUser());
            }).then(function (results) {
                done();
            });
        });

        // beforeEach(function (done) {
        //     helpers.resetData().then(function () { done(); }, errors.throwError);
        // });

        var testPerms = [
                { act: "edit", obj: "post" },
                { act: "edit", obj: "tag" },
                { act: "edit", obj: "user" },
                { act: "edit", obj: "page" },
                { act: "add", obj: "post" },
                { act: "add", obj: "user" },
                { act: "add", obj: "page" },
                { act: "remove", obj: "post" },
                { act: "remove", obj: "user" }
            ],
            currTestPermId = 1,
            // currTestUserId = 1,
            // createTestUser = function (email_address) {
            //     if (!email_address) {
            //         currTestUserId += 1;
            //         email_address = "test" + currTestPermId + "@test.com";
            //     }

            //     var newUser = {
            //         id: currTestUserId,
            //         email_address: email_address,
            //         password: "testing123"
            //     };

            //     return UserProvider.add(newUser);
            // },
            createPermission = function (name, act, obj) {
                if (!name) {
                    currTestPermId += 1;
                    name = "test" + currTestPermId;
                }

                var newPerm = {
                    name: name,
                    action_type: act,
                    object_type: obj
                };

                return PermissionsProvider.add(newPerm);
            },
            createTestPermissions = function () {
                var createActions = _.map(testPerms, function (testPerm) {
                    return createPermission(null, testPerm.act, testPerm.obj);
                });

                return when.all(createActions);
            };

        it('can load an actions map from existing permissions', function (done) {

            createTestPermissions()
                .then(permissions.init)
                .then(function (actionsMap) {
                    should.exist(actionsMap);

                    actionsMap.edit.should.eql(['post', 'tag', 'user', 'page']);

                    actionsMap.should.equal(permissions.actionsMap);

                    done();
                }, errors.throwError);
        });

        it('can add user to role', function (done) {
            var existingUserRoles;

            UserProvider.read({id: 1}, { withRelated: ['roles'] }).then(function (foundUser) {
                var testRole = new Models.Role({
                    name: 'testrole1',
                    description: 'testrole1 description'
                });

                should.exist(foundUser);

                should.exist(foundUser.roles());

                existingUserRoles = foundUser.related('roles').length;

                return testRole.save().then(function () {
                    return foundUser.roles().attach(testRole);
                });
            }).then(function () {
                return UserProvider.read({id: 1}, { withRelated: ['roles'] });
            }).then(function (updatedUser) {
                should.exist(updatedUser);

                updatedUser.related('roles').length.should.equal(existingUserRoles + 1);

                done();
            });
        });

        it('can add user permissions', function (done) {
            Models.User.read({id: 1}, { withRelated: ['permissions']}).then(function (testUser) {
                var testPermission = new Models.Permission({
                    name: "test edit posts",
                    action_type: 'edit',
                    object_type: 'post'
                });

                testUser.related('permissions').length.should.equal(0);

                return testPermission.save().then(function () {
                    return testUser.permissions().attach(testPermission);
                });
            }).then(function () {
                return Models.User.read({id: 1}, { withRelated: ['permissions']});
            }).then(function (updatedUser) {
                should.exist(updatedUser);

                updatedUser.related('permissions').length.should.equal(1);

                done();
            });
        });

        it('can add role permissions', function (done) {
            var testRole = new Models.Role({
                name: "test2",
                description: "test2 description"
            });

            testRole.save()
                .then(function () {
                    return testRole.load('permissions');
                })
                .then(function () {
                    var rolePermission = new Models.Permission({
                        name: "test edit posts",
                        action_type: 'edit',
                        object_type: 'post'
                    });

                    testRole.related('permissions').length.should.equal(0);

                    return rolePermission.save().then(function () {
                        return testRole.permissions().attach(rolePermission);
                    });
                })
                .then(function () {
                    return Models.Role.read({id: testRole.id}, { withRelated: ['permissions']});
                })
                .then(function (updatedRole) {
                    should.exist(updatedRole);

                    updatedRole.related('permissions').length.should.equal(1);

                    done();
                });
        });

        it('does not allow edit post without permission', function (done) {
            var fakePage = {
                    id: 1
                };

            createTestPermissions()
                .then(permissions.init)
                .then(function () {
                    return Models.User.read({id: 1});
                })
                .then(function (foundUser) {
                    var canThisResult = permissions.canThis(foundUser);

                    should.exist(canThisResult.edit);
                    should.exist(canThisResult.edit.post);

                    return canThisResult.edit.page(fakePage);
                })
                .then(function () {
                    errors.logError(new Error("Allowed edit post without permission"));
                }, function () {
                    done();
                });
        });

        it('allows edit post with permission', function (done) {
            var fakePost = {
                    id: "1"
                };

            createTestPermissions()
                .then(permissions.init)
                .then(function () {
                    return Models.User.read({id: 1});
                })
                .then(function (foundUser) {
                    var newPerm = new Models.Permission({
                        name: "test3 edit post",
                        action_type: "edit",
                        object_type: "post"
                    });

                    return newPerm.save().then(function () {
                        return foundUser.permissions().attach(newPerm);
                    });
                })
                .then(function () {
                    return Models.User.read({id: 1}, { withRelated: ['permissions']});
                })
                .then(function (updatedUser) {

                    // TODO: Verify updatedUser.related('permissions') has the permission?

                    var canThisResult = permissions.canThis(updatedUser);

                    should.exist(canThisResult.edit);
                    should.exist(canThisResult.edit.post);

                    return canThisResult.edit.post(fakePost);
                })
                .then(function () {
                    done();
                }, function () {
                    errors.logError(new Error("Did not allow edit post with permission"));
                });
        });

        it('can use permissable function on Model to allow something', function (done) {
            var testUser,
                permissableStub = sinon.stub(PostProvider, 'permissable', function () {
                    return when.resolve();
                });



            // createTestUser()
            UserProvider.browse()
                .then(function (foundUser) {
                    testUser = foundUser.models[0];

                    return permissions.canThis(testUser).edit.post(123);
                })
                .then(function () {
                    permissableStub.restore();

                    permissableStub.calledWith(123, testUser.id, 'edit').should.equal(true);

                    done();
                })
                .otherwise(function () {
                    permissableStub.restore();
                    errors.logError(new Error("Did not allow testUser"));
                });
        });

        it('can use permissable function on Model to forbid something', function (done) {
            var testUser,
                permissableStub = sinon.stub(PostProvider, 'permissable', function () {
                    return when.reject();
                });


            // createTestUser()
            UserProvider.browse()
                .then(function (foundUser) {
                    testUser = foundUser.models[0];


                    return permissions.canThis(testUser).edit.post(123);
                })
                .then(function () {
                    permissableStub.restore();

                    errors.logError(new Error("Allowed testUser to edit post"));
                })
                .otherwise(function () {
                    permissableStub.restore();
                    permissableStub.calledWith(123, testUser.id, 'edit').should.equal(true);

                    done();
                });
        });

    });

}());