const { couponsApi } = require( '../../endpoints/coupons' );
const { ordersApi } = require( '../../endpoints/orders' );
const { coupon, order } = require( '../../data' );

/**
 * Tests for the WooCommerce Coupons API.
 *
 * @group api
 * @group coupons
 *
 */
describe( 'Coupons API tests', () => {
	let couponId;

	it( 'can create a coupon', async () => {
		const testCoupon = {
			...coupon,
			code: `${ coupon.code }-${ Date.now() }`,
		};
		const response = await couponsApi.create.coupon( testCoupon );

		expect( response.statusCode ).toEqual( couponsApi.create.responseCode );
		expect( response.body.id ).toBeDefined();
		couponId = response.body.id;

		// Validate the created coupon object has the correct code, amount, and discount type
		expect( response.body ).toEqual(
			expect.objectContaining( {
				code: testCoupon.code,
				amount: Number( coupon.amount ).toFixed( 2 ),
				discount_type: coupon.discount_type,
			} )
		);
	} );

	it( 'can retrieve a coupon', async () => {
		const response = await couponsApi.retrieve.coupon( couponId );
		expect( response.statusCode ).toEqual(
			couponsApi.retrieve.responseCode
		);
		expect( response.body.id ).toEqual( couponId );
	} );

	it( 'can update a coupon', async () => {
		const updatedCouponDetails = {
			description: '10% off storewide',
			maximum_amount: '500.00',
			usage_limit_per_user: 1,
			free_shipping: true,
		};
		const response = await couponsApi.update.coupon(
			couponId,
			updatedCouponDetails
		);
		expect( response.statusCode ).toEqual( couponsApi.update.responseCode );
		expect( response.body ).toEqual(
			expect.objectContaining( updatedCouponDetails )
		);
	} );

	it( 'can permanently delete a coupon', async () => {
		const response = await couponsApi.delete.coupon( couponId, true );

		expect( response.statusCode ).toEqual( couponsApi.delete.responseCode );

		const getCouponResponse = await couponsApi.retrieve.coupon( couponId );
		expect( getCouponResponse.statusCode ).toEqual( 404 );
	} );

	describe( 'Batch update coupons', () => {
		/**
		 * Coupons to be created, updated, and deleted.
		 */
		const expectedCoupons = [
			{
				code: `batchcoupon-${ Date.now() }`,
				discount_type: 'percent',
				amount: '10',
				free_shipping: false,
			},
			{
				code: `batchcoupon-${ Date.now() + 1 }`,
				discount_type: 'percent',
				amount: '20',
			},
		];

		it( 'can batch create coupons', async () => {
			// Batch create 2 new coupons.
			const batchCreatePayload = {
				create: expectedCoupons,
			};
			const batchCreateResponse = await couponsApi.batch.coupons(
				batchCreatePayload
			);
			expect( batchCreateResponse.status ).toEqual(
				couponsApi.batch.responseCode
			);

			// Verify that the 2 new coupons were created
			const actualCoupons = batchCreateResponse.body.create;
			expect( actualCoupons ).toHaveLength( expectedCoupons.length );
			for ( let i = 0; i < actualCoupons.length; i++ ) {
				const { id, code } = actualCoupons[ i ];
				const expectedCouponCode = expectedCoupons[ i ].code;

				expect( id ).toBeDefined();
				expect( code ).toEqual( expectedCouponCode );

				// Save the coupon id
				expectedCoupons[ i ].id = id;
			}
		} );

		it( 'can batch update coupons', async () => {
			// Update the 1st coupon to free shipping.
			// Update the amount of the 2nd coupon to 25.
			const batchUpdatePayload = {
				update: [
					{
						id: expectedCoupons[ 0 ].id,
						free_shipping: true,
					},
					{
						id: expectedCoupons[ 1 ].id,
						amount: '25.00',
					},
				],
			};
			const batchUpdateResponse = await couponsApi.batch.coupons(
				batchUpdatePayload
			);

			// Verify the response code and the number of coupons that were updated.
			const updatedCoupons = batchUpdateResponse.body.update;
			expect( batchUpdateResponse.status ).toEqual(
				couponsApi.batch.responseCode
			);
			expect( updatedCoupons ).toHaveLength( expectedCoupons.length );

			// Verify that the 1st coupon was updated to free shipping.
			expect( updatedCoupons[ 0 ].id ).toEqual( expectedCoupons[ 0 ].id );
			expect( updatedCoupons[ 0 ].free_shipping ).toEqual( true );

			// Verify that the amount of the 2nd coupon was updated to 25.
			expect( updatedCoupons[ 1 ].id ).toEqual( expectedCoupons[ 1 ].id );
			expect( updatedCoupons[ 1 ].amount ).toEqual( '25.00' );
		} );

		it( 'can batch delete coupons', async () => {
			// Batch delete the 2 coupons.
			const couponIdsToDelete = expectedCoupons.map( ( { id } ) => id );
			const batchDeletePayload = {
				delete: couponIdsToDelete,
			};
			const batchDeleteResponse = await couponsApi.batch.coupons(
				batchDeletePayload
			);

			// Verify that the response shows the 2 coupons.
			const deletedCouponIds = batchDeleteResponse.body.delete.map(
				( { id } ) => id
			);
			expect( batchDeleteResponse.status ).toEqual(
				couponsApi.batch.responseCode
			);
			expect( deletedCouponIds ).toEqual( couponIdsToDelete );

			// Verify that the 2 deleted coupons cannot be retrieved.
			for ( const couponId of couponIdsToDelete ) {
				const { status } = await couponsApi.retrieve.coupon( couponId );

				expect( status ).toEqual( 404 );
			}
		} );
	} );

	describe( 'List coupons', () => {
		const allCoupons = [
			{
				...coupon,
				code: `listcoupons-01-${ Date.now() }`,
				description: `description-01-${ Date.now() }`,
			},
			{
				...coupon,
				code: `listcoupons-02-${ Date.now() }`,
				description: `description-02-${ Date.now() }`,
			},
			{
				...coupon,
				code: `listcoupons-03-${ Date.now() }`,
				description: `description-03-${ Date.now() }`,
			},
		];

		beforeAll( async () => {
			// Create list of coupons for testing.
			const response = await couponsApi.batch.coupons( {
				create: allCoupons,
			} );
			const actualCreatedCoupons = response.body.create;

			// Save their coupon ID's
			for ( const coupon of allCoupons ) {
				const { id } = actualCreatedCoupons.find(
					( { code } ) => coupon.code === code
				);

				coupon.id = id;
			}
		} );

		afterAll( async () => {
			// Clean up created coupons
			const batchDeletePayload = {
				delete: allCoupons.map( ( { id } ) => id ),
			};
			await couponsApi.batch.coupons( batchDeletePayload );
		} );

		it( 'can list all coupons by default', async () => {
			const response = await couponsApi.listAll.coupons();
			const listedCoupons = response.body;
			const actualCouponIdsList = listedCoupons.map( ( { id } ) => id );
			const expectedCouponIdsList = allCoupons.map( ( { id } ) => id );

			expect( response.status ).toEqual(
				couponsApi.listAll.responseCode
			);
			expect( actualCouponIdsList ).toEqual(
				expect.arrayContaining( expectedCouponIdsList )
			);
		} );

		it( 'can limit result set to matching code', async () => {
			const matchingCoupon = allCoupons[ 1 ];
			const payload = { code: matchingCoupon.code };
			const { status, body } = await couponsApi.listAll.coupons(
				payload
			);

			expect( status ).toEqual( couponsApi.listAll.responseCode );
			expect( body ).toHaveLength( 1 );
			expect( body[ 0 ].id ).toEqual( matchingCoupon.id );
		} );

		it( 'can paginate results', async () => {
			const pageSize = 2;
			const payload = {
				page: 1,
				per_page: pageSize,
			};
			const { status, body } = await couponsApi.listAll.coupons(
				payload
			);

			expect( status ).toEqual( couponsApi.listAll.responseCode );
			expect( body ).toHaveLength( pageSize );
		} );

		it( 'can limit results to matching string', async () => {
			// Search by description
			const matchingCoupon = allCoupons[ 2 ];
			const matchingString = matchingCoupon.description;
			const payload = {
				search: matchingString,
			};

			const { status, body } = await couponsApi.listAll.coupons(
				payload
			);

			expect( status ).toEqual( couponsApi.listAll.responseCode );
			expect( body ).toHaveLength( 1 );
			expect( body[ 0 ].id ).toEqual( matchingCoupon.id );
		} );
	} );

	describe( 'Add coupon to order', () => {
		const testCoupon = {
			code: `coupon-${ Date.now() }`,
			discount_type: 'percent',
			amount: '10',
		};
		let orderId;

		beforeAll( async () => {
			// Create a coupon
			const createCouponResponse = await couponsApi.create.coupon(
				testCoupon
			);
			testCoupon.id = createCouponResponse.body.id;
		} );

		// Clean up created coupon and order
		afterAll( async () => {
			await couponsApi.delete.coupon( testCoupon.id, true );
			await ordersApi.delete.order( orderId, true );
		} );

		it( 'can add coupon to an order', async () => {
			const orderWithCoupon = {
				...order,
				coupon_lines: [ { code: testCoupon.code } ],
			};
			const { status, body } = await ordersApi.create.order(
				orderWithCoupon
			);
			orderId = body.id;

			expect( status ).toEqual( ordersApi.create.responseCode );
			expect( body.coupon_lines ).toHaveLength( 1 );
			expect( body.coupon_lines[ 0 ].code ).toEqual( testCoupon.code );
			// Test that the coupon meta data exists.
			// See: https://github.com/woocommerce/woocommerce/issues/28166.
			expect( body.coupon_lines[ 0 ].meta_data ).toEqual(
				expect.arrayContaining( [
					expect.objectContaining( {
						key: 'coupon_data',
						value: expect.objectContaining( {
							code: testCoupon.code,
						} ),
					} ),
				] )
			);
		} );
	} );
} );