import { expect } from 'chai';
import * as sinon from 'sinon';
const sandbox = sinon.createSandbox();

import * as requestPost from '../../src/request/post';
import * as requestPut from '../../src/request/put';
import * as requestGet from '../../src/request/get';
import * as requestHead from '../../src/request/head';
import * as requestDelete from '../../src/request/delete';
import { Base } from '../../src/base';
import { TestConfiguration } from '../../src/configuration';

describe('Base SDK ', () => {
	let requestPostStub: any;
	let requestPutStub: any;
	let requestGetStub: any;
	let requestHeadStub: any;
	let requestDeleteStub: any;
	let config;
	let base: any;
	let baseWithAdvancedTracing: any;

	describe('Tracing headers', () => {
		async function testRequestMethod(base: any, wrapperFunction: any, stub: any, expectedTracingHeaders: any, customOption?: any) {
			const wrappedFunction = stub.returns(Promise.resolve(true));
			const originalHttpOptions = customOption ? customOption : { url: 'http://www.ft.com', key: 'SomeKey', body: `Somebody for ${wrapperFunction}` };
			const expectedEnrichedOptions = Object.assign({}, originalHttpOptions, expectedTracingHeaders);
			await base[wrapperFunction](originalHttpOptions);
			const actual = wrappedFunction.getCall(0).args[0];
			expect(actual).to.deep.eq(expectedEnrichedOptions);
		}

		beforeEach(() => {
			requestPostStub = sandbox.stub(requestPost, 'post');
			requestPutStub = sandbox.stub(requestPut, 'put');
			requestGetStub = sandbox.stub(requestGet, 'get');
			requestHeadStub = sandbox.stub(requestHead, 'head');
			requestDeleteStub = sandbox.stub(requestDelete, 'requestDelete');
			config = new TestConfiguration({
				originSystemId: 'n-membership-sdk-tests',
			});
			base = new Base(config);
			baseWithAdvancedTracing = new Base(config, { xRequestId: '123ABC' });
			baseWithAdvancedTracing.setOriginUser('uuid123');
		});

		afterEach(function () {
			sandbox.restore();
		});

		context('are added to track the Origin System', () => {
			const expectedTracingHeaders = {
				additionalHeaders: {
					'X-Origin-System-Id': 'n-membership-sdk-tests',
				}
			};
			it('for requestPost', async () => {
				await testRequestMethod(base, 'requestPost', requestPostStub, expectedTracingHeaders);
			});

			it('for requestPut', async () => {
				await testRequestMethod(base, 'requestPut', requestPutStub, expectedTracingHeaders);
			});

			it('for requestGet', async () => {
				await testRequestMethod(base, 'requestGet', requestGetStub, expectedTracingHeaders);
			});

			it('for requestHead', async () => {
				await testRequestMethod(base, 'requestHead', requestHeadStub, expectedTracingHeaders);
			});

			it('for requestDelete', async () => {
				await testRequestMethod(base, 'requestDelete', requestDeleteStub, expectedTracingHeaders);
			});


		});

		context('are added to track User ID and X-Request-Id (generated by the CDN for every request)', () => {
			const expectedTracingHeaders = {
				additionalHeaders: {
					'X-Origin-System-Id': 'n-membership-sdk-tests',
					'X-Origin-User': 'uuid123',
					'X-Request-Id': '123ABC'
				}
			};
			it('for requestPost', async () => {
				await testRequestMethod(baseWithAdvancedTracing, 'requestPost', requestPostStub, expectedTracingHeaders);
			});

			it('for requestPut', async () => {
				await testRequestMethod(baseWithAdvancedTracing, 'requestPut', requestPutStub, expectedTracingHeaders);
			});

			it('for requestGet', async () => {
				await testRequestMethod(baseWithAdvancedTracing, 'requestGet', requestGetStub, expectedTracingHeaders);
			});

			it('for requestHead', async () => {
				await testRequestMethod(baseWithAdvancedTracing, 'requestHead', requestHeadStub, expectedTracingHeaders);
			});

			it('for requestDelete', async () => {
				await testRequestMethod(baseWithAdvancedTracing, 'requestDelete', requestDeleteStub, expectedTracingHeaders);
			});


		});

		context('can be overwritten via additional Headers', () => {
			const expectedTracingHeaders = {
				additionalHeaders: {
					'X-Origin-System-Id': 'override the system!',
					'X-Origin-User': 'I own you',
					'X-Request-Id': 'Your system is exploited'
				}
			};
			const customOptions = {
				url: 'http://www.ft.com', key: 'SomeKey', body: 'Custom options', additionalHeaders: expectedTracingHeaders.additionalHeaders
			};
			it('for requestPost', async () => {
				await testRequestMethod(baseWithAdvancedTracing, 'requestPost', requestPostStub, expectedTracingHeaders, customOptions);
			});

		});


	});
});