import { describe, expect, it, vi } from 'vitest';
import type { SendPacketResult } from '@snowluma/common/packet-sender';
import { SetSearch } from '../../src/oidb-services/group-admin/set-search';

// Capture the exact OIDB request bytes SetSearch sends, via a fake sender.
async function sentHex(params: SetSearch.Params): Promise<string> {
    let body: Uint8Array | undefined;
    const deps = {
        sendRawPacket: vi.fn(async (_cmd: string, b: Uint8Array): Promise<SendPacketResult> => {
            body = b;
            return {
                success: true,
                gotResponse: true,
                errorCode: 0,
                errorMessage: '',
                responseData: Buffer.alloc(0),
            };
        }),
    };
    await SetSearch.invoke(deps as never, params);
    return Buffer.from(body!).toString('hex');
}

// settings (field2) sub-message: noFingerOpen = tag 35 (35<<3 = 280 → varint
// "98 02"), noCodeFingerOpen = tag 36 (36<<3 = 288 → "a0 02"). Tags RE'd
// empirically on a live group (#191, see Oidb0x89a_0SearchSettings).
describe('SetSearch (0x89a_0) settings encoding (#191)', () => {
    it('emits BOTH flags even at value 0 — toggle-off must not be dropped', async () => {
        const h = await sentHex({ groupId: 941657197, noFingerOpen: 0, noCodeFingerOpen: 0 });
        // field2 = { 35: 0, 36: 0 } → 12 06 980200 a00200
        expect(h).toContain('1206980200a00200');
    });

    it('emits value 1 correctly', async () => {
        const h = await sentHex({ groupId: 941657197, noFingerOpen: 1, noCodeFingerOpen: 1 });
        expect(h).toContain('1206980201a00201');
    });

    it('elides an unprovided flag (undefined → not sent)', async () => {
        const h = await sentHex({ groupId: 941657197, noCodeFingerOpen: 0 });
        expect(h).toContain('a00200'); // tag 36 (noCodeFingerOpen) present, value 0
        expect(h).not.toContain('980200'); // tag 35 (noFingerOpen) absent
    });

    it('carries the group uin + command 0x89a_0', async () => {
        const deps = {
            sendRawPacket: vi.fn(async (): Promise<SendPacketResult> => ({
                success: true,
                gotResponse: true,
                errorCode: 0,
                errorMessage: '',
                responseData: Buffer.alloc(0),
            })),
        };
        await SetSearch.invoke(deps as never, { groupId: 941657197, noFingerOpen: 1 });
        expect(deps.sendRawPacket).toHaveBeenCalledWith(
            'OidbSvcTrpcTcp.0x89a_0',
            expect.anything(),
        );
    });
});