import { describe, it, expect, vi, afterEach } from 'vitest';
import {
    getDaySignedListWebAPI,
    mapDaySignedList,
    type DaySignedInfo,
    type DaySignedListResponse,
} from '@snowluma/protocol/web/group-signin';
import { RequestUtil } from '@snowluma/protocol/web/request-util';

// The signed-in list comes back from qun.qq.com's GetDaySignedList trpc
// endpoint nested under response.page[0].infos. We pin the field renames
// and the rank de-skewing formula NapCat uses ((signInRank - 1) / 2 + 1),
// because that transform is the only real logic in this otherwise-thin
// HTTP port and a silent off-by-one would be invisible end-to-end.

function resp(infos: DaySignedInfo[]): DaySignedListResponse {
    return {
        retCode: 0,
        response: { page: [{ infos, offset: 0, total: infos.length }] },
        funcCode: 0,
    };
}

describe('group-signin / mapDaySignedList', () => {
    it('renames fields and de-skews signInRank', () => {
        const out = mapDaySignedList(
            resp([
                {
                    uid: '10001',
                    uidGroupNick: 'Alice',
                    signedTimeStamp: '1700000000',
                    signInRank: 1,
                },
                { uid: '10002', uidGroupNick: 'Bob', signedTimeStamp: '1700000050', signInRank: 3 },
                {
                    uid: '10003',
                    uidGroupNick: 'Carol',
                    signedTimeStamp: '1700000100',
                    signInRank: 5,
                },
            ]),
        );
        expect(out).toEqual([
            { user_id: 10001, nick: 'Alice', time: 1700000000, rank: 1 },
            { user_id: 10002, nick: 'Bob', time: 1700000050, rank: 2 },
            { user_id: 10003, nick: 'Carol', time: 1700000100, rank: 3 },
        ]);
    });

    it('returns [] when infos is empty', () => {
        expect(mapDaySignedList(resp([]))).toEqual([]);
    });

    it('returns [] when page is missing entirely', () => {
        expect(mapDaySignedList({ retCode: 0, response: {}, funcCode: 0 })).toEqual([]);
    });
});

describe('group-signin / getDaySignedListWebAPI (HTTP layer)', () => {
    afterEach(() => vi.restoreAllMocks());

    const cookies = { p_skey: 'PSK', skey: 'SK', uin: 'o10000', p_uin: 'o10000' };
    // g_tk = djb2-31bit over p_skey 'PSK'
    const expectedGtk = (() => {
        let h = 5381;

        for (const c of 'PSK') {
            h += (h << 5) + c.charCodeAt(0);
        }

        return (h & 0x7fffffff).toString();
    })();

    it('POSTs the exact url + json body and maps the result', async () => {
        const spy = vi.spyOn(RequestUtil, 'HttpGetJson').mockResolvedValue({
            retCode: 0,
            funcCode: 0,
            response: {
                page: [
                    {
                        infos: [
                            {
                                uid: '777',
                                uidGroupNick: 'Z',
                                signedTimeStamp: '1700000000',
                                signInRank: 3,
                            },
                        ],
                        offset: 0,
                        total: 1,
                    },
                ],
            },
        } satisfies DaySignedListResponse as never);

        const out = await getDaySignedListWebAPI(cookies, '54321', '10000', new Date(2026, 0, 2));

        expect(out).toEqual([{ user_id: 777, nick: 'Z', time: 1700000000, rank: 2 }]);
        const [url, method, body, headers, isJsonRet, isArgJson] = spy.mock.calls[0]!;
        expect(url).toBe(`https://qun.qq.com/v2/signin/trpc/GetDaySignedList?g_tk=${expectedGtk}`);
        expect(method).toBe('POST');
        expect(body).toEqual({
            dayYmd: '20260102',
            offset: 0,
            limit: 100,
            uid: '10000',
            groupId: '54321',
        });
        expect((headers as Record<string, string>)['Content-Type']).toBe('application/json');
        expect((headers as Record<string, string>).Cookie).toContain('p_skey=PSK');
        expect(isJsonRet).toBe(true);
        expect(isArgJson).toBe(true);
    });

    it('propagates a transport error instead of swallowing it to []', async () => {
        vi.spyOn(RequestUtil, 'HttpGetJson').mockRejectedValue(
            new Error('Unexpected status code: 403'),
        );
        await expect(getDaySignedListWebAPI(cookies, '1', '1')).rejects.toThrow('403');
    });

    it('throws when the response has no page (auth/cookie failure), not []', async () => {
        vi.spyOn(RequestUtil, 'HttpGetJson').mockResolvedValue({
            retCode: 0,
            funcCode: 0,
            response: {},
        } satisfies DaySignedListResponse as never);
        await expect(getDaySignedListWebAPI(cookies, '1', '1')).rejects.toThrow(
            '无法获取该群组打卡列表',
        );
    });
});