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

import { SetSpecialTitle } from '../../../src/oidb-services/group-admin/set-special-title';
import { env, v, s, m } from '../_pb-oracle';

function makeDeps() {
    const r: SendPacketResult = {
        success: true,
        gotResponse: true,
        errorCode: 0,
        errorMessage: '',
        responseData: Buffer.alloc(0),
    };
    return {
        sendRawPacket: vi.fn(async () => r),
        resolveUserUid: vi.fn(async () => 'resolved-uid'),
    };
}

describe('SetSpecialTitle namespace', () => {
    it('declares 0x8FC_2', () => {
        expect(SetSpecialTitle.command).toBe(0x8fc);
        expect(SetSpecialTitle.subCommand).toBe(2);
    });

    it('routes to 0x8fc_2 with -1 (permanent) expireTime sentinel', async () => {
        const deps = makeDeps();
        await SetSpecialTitle.invoke(deps, { groupId: 12345, userId: 67890, title: 'crown' });
        expect(deps.resolveUserUid).toHaveBeenCalledWith(67890, 12345);
        const [wire, bytes] = deps.sendRawPacket.mock.calls[0]!;
        expect(wire).toBe('OidbSvcTrpcTcp.0x8fc_2');
        const env = protobuf_decode<OidbBase<OidbSpecialTitle>>(bytes);
        expect(env.body?.groupUin).toBe(12345);
        expect(env.body?.body?.targetUid).toBe('resolved-uid');
        expect(env.body?.body?.specialTitle).toBe('crown');
        // uinName (tag 7) must mirror specialTitle or the server silently no-ops.
        expect(env.body?.body?.uinName).toBe('crown');
        // int_32 preserves the signed -1 sentinel after the wire round-trip.
        expect(env.body?.body?.expireTime).toBe(-1);
    });

    it.each(['', ' ', '龙王👑'])('preserves title %j in both wire fields', async (title) => {
        const deps = makeDeps();
        await SetSpecialTitle.invoke(deps, { groupId: 12345, userId: 67890, title });
        expect(deps.resolveUserUid).toHaveBeenCalledWith(67890, 12345);
        const [wire, bytes] = deps.sendRawPacket.mock.calls[0]!;
        expect(wire).toBe('OidbSvcTrpcTcp.0x8fc_2');

        // Empty titles must emit tag 5 + length 0 and tag 7 + length 0:
        // omitting either field turns clearing the title into a silent no-op (#517).
        const member = [
            ...s(1, 'resolved-uid'),
            ...s(5, title),
            ...v(6, 0xffffffff),
            ...s(7, title),
        ];
        const body = [...v(1, 12345), ...m(3, member)];
        expect(Buffer.from(bytes).toString('hex')).toBe(env(0x8fc, 2, body, false));
    });
});