import { jest, describe, expect, it, beforeAll } from '@jest/globals';
import { createWrapper, axios } from 'app/tests/jest/jestHelpers';
import Paginate from '../PaginateData.vue';

const mockPush = jest.fn();

jest.mock('vue-router', () => ({
    useRouter: () => ({
        push: mockPush,
        currentRoute: { value: 'myCurrentRoute' }
    }),
}));

describe('Paginate', () => {
    const expectedUrl = '/api/customers';
    let vm;
    beforeAll(() => {
        const options = {
            attrs: {
                url: expectedUrl,
                sortBy: 'id DESC',
                rowsPerPage: 3
            }
        };
        vm = createWrapper(Paginate, options).vm;

        jest.spyOn(axios, 'get').mockResolvedValue({
            data: [
                { id: 1, name: 'Tony Stark' },
                { id: 2, name: 'Jessica Jones' },
                { id: 3, name: 'Bruce Wayne' },
            ]
        });
    });

    afterEach(() => {
        vm.rows = [];
        vm.pagination.page = 1;
        vm.hasMoreData = true;
    })

    describe('paginate()', () => {
        it('should call to the paginate() method and set the data on the rows property', async () => {
            const expectedOptions = {
                params: {
                    filter: {
                        order: 'id DESC',
                        limit: 3,
                        skip: 0
                    }
                }
            };

            await vm.paginate();

            expect(axios.get).toHaveBeenCalledWith(expectedUrl, expectedOptions);
            expect(vm.rows.length).toEqual(3);
        });

        it('should call to the paginate() method and then call it again to paginate', async () => {
            const expectedOptions = {
                params: {
                    filter: {
                        order: 'id DESC',
                        limit: 3,
                        skip: 0
                    }
                }
            };

            await vm.paginate();

            expect(axios.get).toHaveBeenCalledWith(expectedUrl, expectedOptions);
            expect(vm.rows.length).toEqual(3);

            const expectedOptionsPaginated = {
                params: {
                    filter: {
                        order: 'id DESC',
                        limit: 3,
                        skip: 3
                    }
                }
            };

            vm.pagination.page = 2;

            await vm.paginate();

            expect(axios.get).toHaveBeenCalledWith(expectedUrl, expectedOptionsPaginated);
            expect(vm.rows.length).toEqual(6);
        });
    });

    describe('onLoad()', () => {
        it('should call to the done() callback and not increment the pagination', async () => {
            const index = 1;
            const done = jest.fn();

            await vm.onLoad(index, done);

            expect(vm.pagination.page).toEqual(1);
            expect(done).toHaveBeenCalledWith(false);
        });

        it('should increment the pagination and then call to the done() callback', async () => {
            vm.rows = [
                { id: 1, name: 'Tony Stark' },
                { id: 2, name: 'Jessica Jones' },
                { id: 3, name: 'Bruce Wayne' },
            ];

            expect(vm.pagination.page).toEqual(1);

            const index = 1;
            const done = jest.fn();

            await vm.onLoad(index, done);

            expect(vm.pagination.page).toEqual(2);
            expect(done).toHaveBeenCalledWith(false);
        });

        it('should call to the done() callback with true as argument to finish pagination', async () => {
            jest.spyOn(axios, 'get').mockResolvedValue({
                data: [
                    { id: 1, name: 'Tony Stark' },
                    { id: 2, name: 'Jessica Jones' }
                ]
            });

            vm.rows = [
                { id: 1, name: 'Tony Stark' },
                { id: 2, name: 'Jessica Jones' },
                { id: 3, name: 'Bruce Wayne' },
            ];

            expect(vm.pagination.page).toEqual(1);

            const index = 1;
            const done = jest.fn();

            vm.hasMoreData = false;

            await vm.onLoad(index, done);

            expect(vm.pagination.page).toEqual(2);
            expect(done).toHaveBeenCalledWith(true);
        });
    });
});