import expect from 'unexpected';
import sinon from 'sinon';

import CompleteState from 'services/authFlow/CompleteState';
import LoginState from 'services/authFlow/LoginState';
import ActivationState from 'services/authFlow/ActivationState';
import AcceptRulesState from 'services/authFlow/AcceptRulesState';
import FinishState from 'services/authFlow/FinishState';
import PermissionsState from 'services/authFlow/PermissionsState';
import ChooseAccountState from 'services/authFlow/ChooseAccountState';

import { bootstrap, expectState, expectNavigate, expectRun } from './helpers';

describe('CompleteState', () => {
    let state;
    let context;
    let mock;

    beforeEach(() => {
        state = new CompleteState();

        const data = bootstrap();
        context = data.context;
        mock = data.mock;
    });

    afterEach(() => {
        mock.verify();
    });

    describe('#enter', () => {
        it('should navigate to / for authenticated', () => {
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                auth: {}
            });

            expectNavigate(mock, '/');

            state.enter(context);
        });

        it('should transition to login for guests', () => {
            context.getState.returns({
                user: {
                    isGuest: true
                },
                auth: {}
            });

            expectState(mock, LoginState);

            state.enter(context);
        });

        it('should transition to activation if account is not activated', () => {
            context.getState.returns({
                user: {
                    isGuest: false
                },
                auth: {}
            });

            expectState(mock, ActivationState);

            state.enter(context);
        });

        it('should transition to accept-rules if shouldAcceptRules', () => {
            context.getState.returns({
                user: {
                    shouldAcceptRules: true,
                    isActive: true,
                    isGuest: false
                },
                auth: {}
            });

            expectState(mock, AcceptRulesState);

            state.enter(context);
        });

        it('should transition to activation with higher priority than shouldAcceptRules', () => {
            context.getState.returns({
                user: {
                    shouldAcceptRules: true,
                    isGuest: false
                },
                auth: {}
            });

            expectState(mock, ActivationState);

            state.enter(context);
        });

        it('should transition to finish state if code is present', () => {
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                auth: {
                    oauth: {
                        clientId: 'ely.by',
                        code: 'XXX'
                    }
                }
            });

            expectState(mock, FinishState);

            state.enter(context);
        });

        it('should transition to permissions state if acceptRequired', () => {
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                auth: {
                    oauth: {
                        clientId: 'ely.by',
                        acceptRequired: true
                    }
                }
            });

            expectState(mock, PermissionsState);

            state.enter(context);
        });

        it('should transition to permissions state if prompt=consent', () => {
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                auth: {
                    oauth: {
                        clientId: 'ely.by',
                        prompt: ['consent']
                    }
                }
            });

            expectState(mock, PermissionsState);

            state.enter(context);
        });

        it('should transition to ChooseAccountState if user has multiple accs and switcher enabled', () => {
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                accounts: {
                    available: [
                        {id: 1},
                        {id: 2}
                    ],
                    active: {
                        id: 1
                    }
                },
                auth: {
                    isSwitcherEnabled: true,
                    oauth: {
                        clientId: 'ely.by',
                        prompt: []
                    }
                }
            });

            expectState(mock, ChooseAccountState);

            state.enter(context);
        });

        it('should NOT transition to ChooseAccountState if user has multiple accs and switcher disabled', () => {
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                accounts: {
                    available: [
                        {id: 1},
                        {id: 2}
                    ],
                    active: {
                        id: 1
                    }
                },
                auth: {
                    isSwitcherEnabled: false,
                    oauth: {
                        clientId: 'ely.by',
                        prompt: []
                    }
                }
            });

            expectRun(mock, 'oAuthComplete', {})
                .returns({then() {}});

            state.enter(context);
        });

        it('should transition to ChooseAccountState if prompt=select_account and switcher enabled', () => {
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                accounts: {
                    available: [
                        {id: 1}
                    ],
                    active: {
                        id: 1
                    }
                },
                auth: {
                    isSwitcherEnabled: true,
                    oauth: {
                        clientId: 'ely.by',
                        prompt: ['select_account']
                    }
                }
            });

            expectState(mock, ChooseAccountState);

            state.enter(context);
        });

        it('should NOT transition to ChooseAccountState if prompt=select_account and switcher disabled', () => {
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                accounts: {
                    available: [
                        {id: 1}
                    ],
                    active: {
                        id: 1
                    }
                },
                auth: {
                    isSwitcherEnabled: false,
                    oauth: {
                        clientId: 'ely.by',
                        prompt: ['select_account']
                    }
                }
            });

            expectRun(mock, 'oAuthComplete', {})
                .returns({then() {}});

            state.enter(context);
        });
    });

    describe('when user completes oauth', () => {
        it('should run oAuthComplete', () => {
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                auth: {
                    oauth: {
                        clientId: 'ely.by',
                        prompt: []
                    }
                }
            });

            expectRun(
                mock,
                'oAuthComplete',
                sinon.match.object
            ).returns({then() {}});

            state.enter(context);
        });

        it('should listen for auth success/failure', () => {
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                auth: {
                    oauth: {
                        clientId: 'ely.by',
                        prompt: []
                    }
                }
            });

            expectRun(
                mock,
                'oAuthComplete',
                sinon.match.object
            ).returns({then(success, fail) {
                expect(success, 'to be a', 'function');
                expect(fail, 'to be a', 'function');
            }});

            state.enter(context);
        });

        it('should run redirect by default', () => {
            const expectedUrl = 'foo/bar';
            const promise = Promise.resolve({redirectUri: expectedUrl});

            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                auth: {
                    oauth: {
                        clientId: 'ely.by',
                        prompt: []
                    }
                }
            });

            expectRun(
                mock,
                'oAuthComplete',
                sinon.match.object
            ).returns(promise);
            expectRun(
                mock,
                'redirect',
                expectedUrl
            );

            state.enter(context);

            return promise.catch(mock.verify.bind(mock));
        });

        const testOAuth = (type, resp, expectedInstance) => {
            const promise = Promise[type](resp);

            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                auth: {
                    oauth: {
                        clientId: 'ely.by',
                        prompt: []
                    }
                }
            });

            expectRun(
                mock,
                'oAuthComplete',
                sinon.match.object
            ).returns(promise);
            expectState(mock, expectedInstance);

            state.enter(context);

            return promise.catch(mock.verify.bind(mock));
        };

        it('should transition to finish state if rejected with static_page', () =>
            testOAuth('resolve', {redirectUri: 'static_page'}, FinishState)
        );

        it('should transition to finish state if rejected with static_page_with_code', () =>
            testOAuth('resolve', {redirectUri: 'static_page_with_code'}, FinishState)
        );

        it('should transition to login state if rejected with unauthorized', () =>
            testOAuth('reject', {unauthorized: true}, LoginState)
        );

        it('should transition to permissions state if rejected with acceptRequired', () =>
            testOAuth('reject', {acceptRequired: true}, PermissionsState)
        );

        describe('when loginHint is set', () => {
            const testSuccessLoginHint = (field) => {
                const account = {
                    id: 9,
                    email: 'some@email.com',
                    username: 'thatUsername'
                };

                context.getState.returns({
                    user: {
                        isActive: true,
                        isGuest: false
                    },
                    accounts: {
                        available: [
                            account
                        ],
                        active: {
                            id: 100
                        }
                    },
                    auth: {
                        oauth: {
                            clientId: 'ely.by',
                            loginHint: account[field],
                            prompt: []
                        }
                    }
                });

                expectRun(mock, 'setAccountSwitcher', false);
                expectRun(mock, 'authenticate', account)
                    .returns(Promise.resolve());
                expectState(mock, CompleteState);

                return expect(state.enter(context), 'to be fulfilled');
            };

            it('should authenticate account if id matches', () =>
                testSuccessLoginHint('id')
            );

            it('should authenticate account if email matches', () =>
                testSuccessLoginHint('email')
            );

            it('should authenticate account if username matches', () =>
                testSuccessLoginHint('username')
            );

            it('should not authenticate if account is already authenticated', () => {
                const account = {
                    id: 9,
                    email: 'some@email.com',
                    username: 'thatUsername'
                };

                context.getState.returns({
                    user: {
                        isActive: true,
                        isGuest: false
                    },
                    accounts: {
                        available: [
                            account
                        ],
                        active: account
                    },
                    auth: {
                        oauth: {
                            clientId: 'ely.by',
                            loginHint: account.id,
                            prompt: []
                        }
                    }
                });

                expectRun(mock, 'setAccountSwitcher', false);
                expectRun(mock, 'oAuthComplete', {})
                    .returns({then: () => Promise.resolve()});

                return expect(state.enter(context), 'to be fulfilled');
            });

            it('should not authenticate if account was not found and continue auth', () => {
                const account = {
                    id: 9,
                    email: 'some@email.com',
                    username: 'thatUsername'
                };

                context.getState.returns({
                    user: {
                        isActive: true,
                        isGuest: false
                    },
                    accounts: {
                        available: [{id: 1}],
                        active: {id: 1}
                    },
                    auth: {
                        oauth: {
                            clientId: 'ely.by',
                            loginHint: account.id,
                            prompt: []
                        }
                    }
                });

                expectRun(mock, 'oAuthComplete', {})
                    .returns({then: () => Promise.resolve()});

                return expect(state.enter(context), 'to be fulfilled');
            });
        });
    });

    describe('permissions accept', () => {
        it('should set flags, when user accepted permissions', () => {
            state = new CompleteState();
            expect(state.isPermissionsAccepted, 'to be undefined');

            state = new CompleteState({accept: undefined});
            expect(state.isPermissionsAccepted, 'to be undefined');

            state = new CompleteState({accept: true});
            expect(state.isPermissionsAccepted, 'to be true');

            state = new CompleteState({accept: false});
            expect(state.isPermissionsAccepted, 'to be false');
        });

        it('should run oAuthComplete passing accept: true', () => {
            const expected = {accept: true};

            state = new CompleteState(expected);
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                auth: {
                    oauth: {
                        clientId: 'ely.by',
                        prompt: []
                    }
                }
            });

            mock.expects('run').once().withExactArgs(
                'oAuthComplete',
                sinon.match(expected)
            ).returns({then() {}});

            state.enter(context);
        });

        it('should run oAuthComplete passing accept: false', () => {
            const expected = {accept: false};

            state = new CompleteState(expected);
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                auth: {
                    oauth: {
                        clientId: 'ely.by',
                        prompt: []
                    }
                }
            });

            expectRun(
                mock,
                'oAuthComplete',
                sinon.match(expected)
            ).returns({then() {}});

            state.enter(context);
        });

        it('should run oAuthComplete passing accept: true, while acceptRequired: true', () => {
            // acceptRequired may block user accept/decline actions, so we need
            // to check that they are accessible
            const expected = {accept: true};

            state = new CompleteState(expected);
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                auth: {
                    oauth: {
                        clientId: 'ely.by',
                        prompt: [],
                        acceptRequired: true
                    }
                }
            });

            expectRun(
                mock,
                'oAuthComplete',
                sinon.match(expected)
            ).returns({then() {}});

            state.enter(context);
        });

        it('should run oAuthComplete passing accept: false, while acceptRequired: true', () => {
            // acceptRequired may block user accept/decline actions, so we need
            // to check that they are accessible
            const expected = {accept: false};

            state = new CompleteState(expected);
            context.getState.returns({
                user: {
                    isActive: true,
                    isGuest: false
                },
                auth: {
                    oauth: {
                        clientId: 'ely.by',
                        prompt: [],
                        acceptRequired: true
                    }
                }
            });

            expectRun(
                mock,
                'oAuthComplete',
                sinon.match(expected)
            ).returns({then() {}});

            state.enter(context);
        });
    });
});