import * as React from 'react';
import expect from 'expect';
import { render, waitFor } from '@testing-library/react';
import { QueryClient } from '@tanstack/react-query';

import { CoreAdminContext } from '../core';
import {
    useGetManyAggregate,
    type UseGetManyAggregateOptions,
} from './useGetManyAggregate';
import { testDataProvider } from '../dataProvider';

const UseGetManyAggregate = ({
    resource,
    ids,
    meta,
    options = {},
    callback = null,
}: {
    resource: string;
    ids: (string | number)[];
    meta?: any;
    options?: UseGetManyAggregateOptions;
    callback?: (v: ReturnType<typeof useGetManyAggregate>) => void;
}) => {
    const hookValue = useGetManyAggregate(resource, { ids, meta }, options);
    if (callback) callback(hookValue);
    return <div>hello</div>;
};

describe('useGetManyAggregate', () => {
    let dataProvider;

    beforeEach(() => {
        dataProvider = testDataProvider({
            getMany: jest
                .fn()
                .mockResolvedValue({ data: [{ id: 1, title: 'foo' }] }),
        });
    });

    it('should call dataProvider.getMany() on mount', async () => {
        render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate resource="posts" ids={[1]} />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
            expect(dataProvider.getMany).toHaveBeenCalledWith('posts', {
                ids: [1],
                signal: undefined,
            });
        });
    });

    it('should not call dataProvider.getMany() on mount if enabled is false', async () => {
        const { rerender } = render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate
                    resource="posts"
                    ids={[1]}
                    options={{ enabled: false }}
                />
            </CoreAdminContext>
        );
        await new Promise(resolve => setTimeout(resolve));
        expect(dataProvider.getMany).toHaveBeenCalledTimes(0);
        rerender(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate
                    resource="posts"
                    ids={[1]}
                    options={{ enabled: true }}
                />
            </CoreAdminContext>
        );
        await new Promise(resolve => setTimeout(resolve));
        expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
    });

    it('should not call dataProvider.getMany() on update', async () => {
        const { rerender } = render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate resource="posts" ids={[1]} />
            </CoreAdminContext>
        );
        await new Promise(resolve => setTimeout(resolve));
        expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
        rerender(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate resource="posts" ids={[1]} />
            </CoreAdminContext>
        );
        await new Promise(resolve => setTimeout(resolve));
        expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
    });

    it('should not call dataProvider.getMany() if ids is empty', async () => {
        const { rerender } = render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate resource="posts" ids={[]} />
            </CoreAdminContext>
        );
        await new Promise(resolve => setTimeout(resolve));
        expect(dataProvider.getMany).toHaveBeenCalledTimes(0);
        rerender(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate resource="posts" ids={[]} />
            </CoreAdminContext>
        );
        await new Promise(resolve => setTimeout(resolve));
        expect(dataProvider.getMany).toHaveBeenCalledTimes(0);
    });

    it('should recall dataProvider.getMany() when ids changes', async () => {
        const { rerender } = render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate resource="posts" ids={[1]} />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
        });
        rerender(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate resource="posts" ids={[1, 2]} />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(2);
        });
    });

    it('should recall dataProvider.getMany() when resource changes', async () => {
        const { rerender } = render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate resource="posts" ids={[1]} />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
        });
        rerender(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate resource="comments" ids={[1]} />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(2);
        });
    });

    it('should use data from query cache on mount', async () => {
        const FetchGetMany = () => {
            useGetManyAggregate('posts', { ids: ['1'] });
            return <span>dummy</span>;
        };
        const hookValue = jest.fn();
        const { rerender } = render(
            <CoreAdminContext dataProvider={dataProvider}>
                <FetchGetMany />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
        });
        rerender(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate
                    resource="posts"
                    ids={[1]}
                    callback={hookValue}
                />
            </CoreAdminContext>
        );
        expect(hookValue).toHaveBeenCalledWith(
            expect.objectContaining({
                data: [{ id: 1, title: 'foo' }],
                isFetching: true,
                isLoading: false,
                error: null,
            })
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(2);
        });
        expect(hookValue).toHaveBeenCalledWith(
            expect.objectContaining({
                data: [{ id: 1, title: 'foo' }],
                isFetching: false,
                isLoading: false,
                error: null,
            })
        );
    });

    it('should set the error state when the dataProvider fails', async () => {
        jest.spyOn(console, 'error').mockImplementation(() => {});
        const hookValue = jest.fn();
        const dataProvider = testDataProvider({
            getMany: jest.fn().mockRejectedValue(new Error('failed')),
        });
        render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate
                    resource="posts"
                    ids={[1]}
                    callback={hookValue}
                />
            </CoreAdminContext>
        );
        expect(hookValue).toHaveBeenCalledWith(
            expect.objectContaining({
                error: null,
            })
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
        });
        expect(hookValue).toHaveBeenCalledWith(
            expect.objectContaining({
                error: new Error('failed'),
            })
        );
    });

    it('should execute success side effects on success', async () => {
        const onSuccess = jest.fn();
        render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate
                    resource="posts"
                    ids={[1]}
                    options={{ onSuccess }}
                />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
            expect(onSuccess).toHaveBeenCalledWith([{ id: 1, title: 'foo' }]);
        });
    });

    it('should execute error side effects on failure', async () => {
        jest.spyOn(console, 'error').mockImplementationOnce(() => {});
        const dataProvider = testDataProvider({
            getMany: jest.fn().mockRejectedValue(new Error('failed')),
        });
        const onError = jest.fn();
        render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate
                    resource="posts"
                    ids={[1]}
                    options={{ onError }}
                />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
            expect(onError).toHaveBeenCalledWith(new Error('failed'));
        });
    });

    it('should aggregate multiple calls for the same resource into one', async () => {
        render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate resource="posts" ids={[1, 2]} />
                <UseGetManyAggregate resource="posts" ids={[3, 4]} />
                <UseGetManyAggregate resource="posts" ids={[5, 6]} />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
            expect(dataProvider.getMany).toHaveBeenCalledWith('posts', {
                ids: [1, 2, 3, 4, 5, 6],
                signal: undefined,
            });
        });
    });

    it('should not aggregate multiple calls for different resources', async () => {
        render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate resource="posts" ids={[1, 2]} />
                <UseGetManyAggregate resource="posts" ids={[3, 4]} />
                <UseGetManyAggregate resource="comments" ids={[5, 6]} />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(2);
            expect(dataProvider.getMany).toHaveBeenCalledWith('posts', {
                ids: [1, 2, 3, 4],
                signal: undefined,
            });
            expect(dataProvider.getMany).toHaveBeenCalledWith('comments', {
                ids: [5, 6],
                signal: undefined,
            });
        });
    });
    it('should not aggregate multiple calls for different meta', async () => {
        render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate
                    resource="posts"
                    ids={[1, 2]}
                    meta={{ test: true }}
                />
                <UseGetManyAggregate
                    resource="posts"
                    ids={[3, 4]}
                    meta={{ test: true }}
                />
                <UseGetManyAggregate resource="posts" ids={[5, 6]} />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(2);
            expect(dataProvider.getMany).toHaveBeenCalledWith('posts', {
                ids: [1, 2, 3, 4],
                meta: { test: true },
                signal: undefined,
            });
            expect(dataProvider.getMany).toHaveBeenCalledWith('posts', {
                ids: [5, 6],
                signal: undefined,
            });
        });
    });

    it('should deduplicated repeated ids', async () => {
        render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate resource="posts" ids={[1, 2]} />
                <UseGetManyAggregate resource="posts" ids={[2, 3]} />
                <UseGetManyAggregate resource="posts" ids={[3, 4]} />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
            expect(dataProvider.getMany).toHaveBeenCalledWith('posts', {
                ids: [1, 2, 3, 4],
                signal: undefined,
            });
        });
    });

    it('should aggregate multiple calls for the same resource into one even if one of the calls requests all the aggregated ids', async () => {
        const firstCallback = jest.fn();
        const secondCallback = jest.fn();
        const thirdCallback = jest.fn();
        const dataProvider = testDataProvider({
            getMany: jest.fn().mockResolvedValue({
                data: [
                    { id: 1, title: 'one' },
                    { id: 2, title: 'two' },
                    { id: 3, title: 'three' },
                ],
            }),
        });
        render(
            <CoreAdminContext dataProvider={dataProvider}>
                <UseGetManyAggregate
                    resource="posts"
                    ids={[1]}
                    callback={firstCallback}
                />
                <UseGetManyAggregate
                    resource="posts"
                    ids={[1, 2]}
                    callback={secondCallback}
                />
                <UseGetManyAggregate
                    resource="posts"
                    ids={[1, 2, 3]}
                    callback={thirdCallback}
                />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
            expect(dataProvider.getMany).toHaveBeenCalledWith('posts', {
                ids: [1, 2, 3],
                signal: undefined,
            });
        });

        await waitFor(() => {
            expect(firstCallback).toHaveBeenCalledWith(
                expect.objectContaining({
                    data: [{ id: 1, title: 'one' }],
                })
            );
        });

        expect(secondCallback).toHaveBeenCalledWith(
            expect.objectContaining({
                data: [
                    { id: 1, title: 'one' },
                    { id: 2, title: 'two' },
                ],
            })
        );
        expect(thirdCallback).toHaveBeenCalledWith(
            expect.objectContaining({
                data: [
                    { id: 1, title: 'one' },
                    { id: 2, title: 'two' },
                    { id: 3, title: 'three' },
                ],
            })
        );
    });

    it.each([
        // case when we have only one query
        { queries: [{ ids: ['1'] }], expectedQueryKeyParams: { ids: ['1'] } },
        // case when we have multiple queries on the same id (deduplication)
        {
            queries: [{ ids: ['1'] }, { ids: ['1'] }],
            expectedQueryKeyParams: { ids: ['1'] },
        },
        // case when we have multiple queries on different ids (aggregation)
        {
            queries: [{ ids: ['1'] }, { ids: ['2'] }],
            expectedQueryKeyParams: { ids: ['1', '2'] },
        },
        // case when we have multiple queries on different ids, including a call with all ids
        // (no manual aggregation needed)
        {
            queries: [{ ids: ['1'] }, { ids: ['2'] }, { ids: ['1', '2'] }],
            expectedQueryKeyParams: { ids: ['1', '2'] },
        },
    ])(
        'should abort the request if the query is canceled',
        async ({ queries, expectedQueryKeyParams }) => {
            const abort = jest.fn();
            const dataProvider = testDataProvider({
                getMany: jest.fn(
                    (_resource, { signal }) =>
                        new Promise(() => {
                            signal.addEventListener('abort', () => {
                                abort(signal.reason);
                            });
                        })
                ) as any,
            });
            dataProvider.supportAbortSignal = true;
            const queryClient = new QueryClient();
            render(
                <CoreAdminContext
                    dataProvider={dataProvider}
                    queryClient={queryClient}
                >
                    {queries.map((query, index) => (
                        <UseGetManyAggregate
                            key={index}
                            resource="posts"
                            {...query}
                        />
                    ))}
                </CoreAdminContext>
            );
            await waitFor(() => {
                expect(dataProvider.getMany).toHaveBeenCalled();
            });
            expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
            expect(dataProvider.getMany).toHaveBeenCalledWith(
                'posts',
                expect.objectContaining(expectedQueryKeyParams)
            );
            queryClient.cancelQueries({
                queryKey: ['posts', 'getMany', expectedQueryKeyParams],
            });
            await waitFor(() => {
                expect(abort).toHaveBeenCalled();
            });
        }
    );

    it('should only call a query that is not yet aborted and then abort it successfully', async () => {
        const abort = jest.fn();
        const reject = jest.fn();
        const dataProvider = testDataProvider({
            getMany: jest.fn(
                (_resource, { signal }) =>
                    new Promise(() => {
                        if (signal.aborted) {
                            reject(
                                'Test failure: called a query which already received an abort signal'
                            );
                        }
                        signal.addEventListener('abort', () => {
                            abort(signal.reason);
                        });
                    })
            ) as any,
        });
        dataProvider.supportAbortSignal = true;
        const queryClient = new QueryClient();
        const { rerender } = render(
            <CoreAdminContext
                dataProvider={dataProvider}
                queryClient={queryClient}
            >
                <UseGetManyAggregate resource="posts" ids={['1']} />
            </CoreAdminContext>
        );
        queryClient.cancelQueries({
            queryKey: ['posts', 'getMany', { ids: ['1'] }],
        });
        rerender(
            <CoreAdminContext
                dataProvider={dataProvider}
                queryClient={queryClient}
            >
                <UseGetManyAggregate resource="posts" ids={['1']} />
                <UseGetManyAggregate resource="posts" ids={['1']} />
            </CoreAdminContext>
        );
        await waitFor(() => {
            expect(dataProvider.getMany).toHaveBeenCalled();
        });
        expect(dataProvider.getMany).toHaveBeenCalledTimes(1);
        expect(dataProvider.getMany).toHaveBeenCalledWith(
            'posts',
            expect.objectContaining({ ids: ['1'] })
        );
        expect(reject).not.toHaveBeenCalled();
        queryClient.cancelQueries({
            queryKey: ['posts', 'getMany', { ids: ['1'] }],
        });
        await waitFor(() => {
            expect(abort).toHaveBeenCalled();
        });
    });
});