/*
 * Copyright 2018 Brigham Young University
 *
 * 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.
 *
 */
import { expect } from 'chai';
import {
    AccountConfig,
    DeployContext,
    PreDeployContext,
    ProduceEventsContext,
    ServiceContext,
    ServiceDeployer,
    ServiceEventType,
    ServiceType,
    UnDeployContext
} from 'handel-extension-api';
import { deletePhases, deployPhase } from 'handel-extension-support';
import 'mocha';
import * as sinon from 'sinon';
import config from '../../../src/account-config/account-config';
import * as s3Calls from '../../../src/aws/s3-calls';
import * as s3DeployersCommon from '../../../src/common/s3-deployers-common';
import { Service } from '../../../src/services/s3';
import { S3ServiceConfig, S3ServiceEventConsumer } from '../../../src/services/s3/config-types';
import { STDLIB_PREFIX } from '../../../src/services/stdlib';

describe('s3 deployer', () => {
    const appName = 'FakeApp';
    const envName = 'FakeEnv';
    let sandbox: sinon.SinonSandbox;
    let ownServiceContext: ServiceContext<S3ServiceConfig>;
    let serviceParams: S3ServiceConfig;
    let accountConfig: AccountConfig;
    let s3: ServiceDeployer;

    beforeEach(async () => {
        s3 = new Service();
        accountConfig = await config(`${__dirname}/../../test-account-config.yml`);
        serviceParams = {
            type: 's3'
        };
        ownServiceContext = new ServiceContext(appName, envName, 'FakeService', new ServiceType(STDLIB_PREFIX, 's3'), serviceParams, accountConfig);
        sandbox = sinon.createSandbox();
    });

    afterEach(() => {
        sandbox.restore();
    });

    describe('check', () => {
        it('should require the versioning parameter to be a certain value when present', () => {
            ownServiceContext.params = {
                type: 's3',
                bucket_name: 'somename',
                versioning: 'othervalue'
            };
            const errors = s3.check!(ownServiceContext, []);
            expect(errors.length).to.equal(1);
            expect(errors[0]).to.contain('Must be either \'enabled\' or \'disabled\'');
        });

        it('should work when there are no configuration errors', () => {
            ownServiceContext.params = {
                type: 's3',
                bucket_name: 'somename',
                versioning: 'enabled'
            };
            const errors = s3.check!(ownServiceContext, []);
            expect(errors.length).to.equal(0);
        });

        it('should fail if PublicReadWrite set as an ACL', () => {
            ownServiceContext.params = {
                type: 's3',
                bucket_name: 'somename',
                bucket_acl: 'PublicReadWrite'
            };
            const errors = s3.check!(ownServiceContext, []);
            expect(errors.length).to.equal(1);
            expect(errors[0]).to.contain('Must be \'AuthenticatedRead\', \'AwsExecRead\', \'BucketOwnerRead\', \'BucketOwnerFullControl\', \'LogDeliveryWrite\', \'Private\' or \'PublicRead\'');
        });

        it('should work with valid bucket_acl', () => {
            ownServiceContext.params = {
                type: 's3',
                bucket_name: 'somename',
                bucket_acl: 'PublicRead'
            };
            const errors = s3.check!(ownServiceContext, []);
            expect(errors.length).to.equal(0);
        });
    });

    describe('deploy', () => {
        it('should deploy the bucket', async () => {
            const bucketName = 'my-bucket';
            const bucketArn = 'fake-arn';
            ownServiceContext.params = {
                type: 's3',
                bucket_name: bucketName
            };
            const preDeployContext = new PreDeployContext(ownServiceContext);

            const createLoggingBucketStub = sandbox.stub(s3DeployersCommon, 'createLoggingBucketIfNotExists').resolves('FakeLoggingBucket');
            const deployStackStub = sandbox.stub(deployPhase, 'deployCloudFormationStack').returns(Promise.resolve({
                Outputs: [{
                    OutputKey: 'BucketName',
                    OutputValue: bucketName
                }, {
                    OutputKey: 'BucketArn',
                    OutputValue: bucketArn
                }]
            }));

            const deployContext = await s3.deploy!(ownServiceContext, preDeployContext, []);
            expect(createLoggingBucketStub.callCount).to.equal(1);
            expect(deployStackStub.callCount).to.equal(1);
            expect(deployContext).to.be.instanceof(DeployContext);
            expect(deployContext.policies.length).to.equal(2);
            expect(deployContext.environmentVariables.FAKESERVICE_BUCKET_NAME).to.equal(bucketName);
            expect(deployContext.environmentVariables.FAKESERVICE_BUCKET_ARN).to.equal(bucketArn);
            expect(deployContext.environmentVariables.FAKESERVICE_BUCKET_URL).to.contain(bucketName);
            expect(deployContext.environmentVariables.FAKESERVICE_REGION_ENDPOINT).to.not.equal(null);
        });
    });

    describe('produceEvents', () => {
        const bucketName = 'FakeBucketName';
        const bucketEvents = [
            'FakeEvent'
        ];
        let ownDeployContext: DeployContext;
        let eventConsumerConfig: S3ServiceEventConsumer;

        beforeEach(() => {
            ownDeployContext = new DeployContext(ownServiceContext);
            ownDeployContext.eventOutputs = {
                resourceName: bucketName,
                resourcePrincipal: 'FakePrincipal',
                serviceEventType: ServiceEventType.S3
            };
            eventConsumerConfig = {
                service_name: 'FakeConsumer',
                bucket_events: bucketEvents
            };
        });

        const servicesToTest = [
            {
                serviceType: 'lambda',
                serviceEventType: ServiceEventType.Lambda
            },
            {
                serviceType: 'sns',
                serviceEventType: ServiceEventType.SNS
            },
            {
                serviceType: 'sqs',
                serviceEventType: ServiceEventType.SQS
            }
        ];
        servicesToTest.forEach(serviceToTest => {
            it(`should produce events to the ${serviceToTest.serviceType} service type`, async () => {
                const consumerServiceContext = new ServiceContext(appName, envName, 'FakeConsumerService', new ServiceType(STDLIB_PREFIX, serviceToTest.serviceType), {type: serviceToTest.serviceType}, accountConfig);
                const consumerDeployContext = new DeployContext(consumerServiceContext);
                consumerDeployContext.eventOutputs = {
                    resourceArn: 'FakeArn',
                    resourceName: 'FakeName',
                    resourcePrincipal: 'FakePrincipal',
                    serviceEventType: serviceToTest.serviceEventType
                };

                const configureBucketNotificationsStub = sandbox.stub(s3Calls, 'configureBucketNotifications').resolves({});

                const produceEventsContext = await s3.produceEvents!(ownServiceContext, ownDeployContext, eventConsumerConfig, consumerServiceContext, consumerDeployContext);
                expect(configureBucketNotificationsStub.callCount).to.equal(1);
                expect(configureBucketNotificationsStub.getCall(0).args).to.deep.equal([
                    bucketName,
                    serviceToTest.serviceEventType,
                    'FakeArn',
                    bucketEvents,
                    []
                ]);
                expect(produceEventsContext).to.be.instanceof(ProduceEventsContext);
            });
        });

        it('should throw an error on all other service types', async () => {
            const consumerServiceContext = new ServiceContext(appName, envName, 'FakeConsumerService', new ServiceType(STDLIB_PREFIX, 'someother'), {type: 'someother'}, accountConfig);
            const consumerDeployContext = new DeployContext(consumerServiceContext);
            consumerDeployContext.eventOutputs = {
                resourceArn: 'FakeArn',
                resourcePrincipal: 'FakePrincipal',
                serviceEventType: ServiceEventType.CloudWatchEvents
            };

            try {
                const produceEventsContext = await s3.produceEvents!(ownServiceContext, ownDeployContext, eventConsumerConfig, consumerServiceContext, consumerDeployContext);
                expect(true).to.equal(false); // SHould not get here
            }
            catch(err) {
                expect(err.message).to.contain('Unsupported event consumer type');
            }
        });
    });

    describe('unDeploy', () => {
        it('should undeploy the stack', async () => {
            const bucketName = 'my-bucket';
            ownServiceContext.params = {
                type: 's3',
                bucket_name: bucketName
            };

            const unDeployStackStub = sandbox.stub(deletePhases, 'unDeployService').returns(Promise.resolve(new UnDeployContext(ownServiceContext)));

            const unDeployContext = await s3.unDeploy!(ownServiceContext);
            expect(unDeployContext).to.be.instanceof(UnDeployContext);
            expect(unDeployStackStub.callCount).to.equal(1);
        });
    });
});