import { describe, expect, it, vi } from 'vitest';
import { protobuf_decode } from '@snowluma/proton';
import type { SendPacketResult } from '@snowluma/common/packet-sender';
import type { OidbBase } from '@snowluma/proto-defs/oidb';
import type { Oidb0x89a_0HistoryVisibility } from '@snowluma/proto-defs/oidb-actions/base';

import {
    decodeGroupHistoryVisibility,
    GROUP_HISTORY_VISIBILITY_MASK,
    mergeGroupHistoryVisibility,
    SetNewMemberHistoryVisibility,
} from '../../../src/oidb-services/group-admin/set-new-member-history-visibility';

function makeSender() {
    const result: SendPacketResult = {
        success: true,
        gotResponse: true,
        errorCode: 0,
        errorMessage: '',
        responseData: Buffer.alloc(0),
    };
    return { sendRawPacket: vi.fn(async () => result) };
}

describe('SetNewMemberHistoryVisibility namespace', () => {
    it.each([
        [true, GROUP_HISTORY_VISIBILITY_MASK],
        [false, 0],
    ])('writes visible=%s as the mutation bit only', async (visible, expected) => {
        const sender = makeSender();

        await SetNewMemberHistoryVisibility.invoke(sender, {
            groupId: 12345,
            visible,
        });

        const [command, bytes] = sender.sendRawPacket.mock.calls[0]!;
        expect(command).toBe('OidbSvcTrpcTcp.0x89a_0');
        const envelope = protobuf_decode<OidbBase<Oidb0x89a_0HistoryVisibility>>(bytes);
        expect(envelope.command).toBe(0x89a);
        expect(envelope.body).toMatchObject({
            groupUin: 12345n,
            settings: {
                groupFlagExt4: expected,
                groupFlagExt4Mask: GROUP_HISTORY_VISIBILITY_MASK,
            },
        });
    });

    it('merges only the verified history-visibility bit', () => {
        expect(mergeGroupHistoryVisibility(0xf0000001, true)).toBe(0xf0000005);
        expect(mergeGroupHistoryVisibility(0xf0000005, false)).toBe(0xf0000001);
    });

    it('decodes the history-visibility switch from a 0/1 reply or the mutation bit', () => {
        expect(decodeGroupHistoryVisibility(0)).toBe(false);
        expect(decodeGroupHistoryVisibility(1)).toBe(true);
        expect(decodeGroupHistoryVisibility(GROUP_HISTORY_VISIBILITY_MASK)).toBe(true);
        expect(decodeGroupHistoryVisibility(0x80000001)).toBe(false);
        expect(decodeGroupHistoryVisibility(0x80000005)).toBe(true);
    });

    it('round-trips history visibility through merge then decode', () => {
        expect(decodeGroupHistoryVisibility(mergeGroupHistoryVisibility(0x80000001, true))).toBe(
            true,
        );
        expect(decodeGroupHistoryVisibility(mergeGroupHistoryVisibility(0x80000005, false))).toBe(
            false,
        );
    });

    it('does not treat a 0/1 detail reply as a missing mutation bit (#387)', () => {
        expect(decodeGroupHistoryVisibility(1)).toBe(true);
        expect(decodeGroupHistoryVisibility(mergeGroupHistoryVisibility(0, true))).toBe(true);
    });

    it('keeps an explicit zero value on the wire', async () => {
        const sender = makeSender();
        await SetNewMemberHistoryVisibility.invoke(sender, {
            groupId: 1,
            visible: false,
        });

        const envelope = protobuf_decode<OidbBase<Oidb0x89a_0HistoryVisibility>>(
            sender.sendRawPacket.mock.calls[0]![1],
        );
        expect(envelope.body?.settings?.groupFlagExt4).toBe(0);
        expect(envelope.body?.settings?.groupFlagExt4Mask).toBe(GROUP_HISTORY_VISIBILITY_MASK);
    });

    it('rejects an invalid current flag when merging', () => {
        expect(() => mergeGroupHistoryVisibility(-1, true)).toThrow(/unsigned 32-bit/);
    });
});