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

import { TransGroupFile } from '../../../src/oidb-services/group-file/trans-group-file';

function makeDeps(body?: OidbGroupSendFileResp) {
    const responseData =
        body !== undefined
            ? Buffer.from(protobuf_encode<OidbBase<OidbGroupSendFileResp>>({ body }))
            : Buffer.alloc(0);
    const r: SendPacketResult = {
        success: true,
        gotResponse: true,
        errorCode: 0,
        errorMessage: '',
        responseData,
    };
    return { sendRawPacket: vi.fn(async () => r) };
}

describe('TransGroupFile namespace', () => {
    it('declares 0x6D9_0', () => {
        expect(TransGroupFile.command).toBe(0x6d9);
        expect(TransGroupFile.subCommand).toBe(0);
    });

    it('packages group + file id under the transFile slot', async () => {
        const deps = makeDeps({ transFile: { saveBusId: 102, saveFilePath: '/abc' } });
        const out = await TransGroupFile.invoke(deps, { groupId: 12345, fileId: 'fid' });
        expect(out).toEqual({ saveBusId: 102, saveFilePath: '/abc' });
        expect(deps.sendRawPacket).toHaveBeenCalledOnce();
        const [wire, bytes] = deps.sendRawPacket.mock.calls[0]!;
        expect(wire).toBe('OidbSvcTrpcTcp.0x6d9_0');
        const env = protobuf_decode<OidbBase<OidbGroupSendFileReq>>(bytes);
        expect(env.body?.transFile).toEqual({
            groupUin: 12345n,
            appId: 7,
            busId: 102,
            fileId: 'fid',
        });
    });

    it('throws on missing transFile sub-message', async () => {
        const deps = makeDeps({});
        await expect(TransGroupFile.invoke(deps, { groupId: 1, fileId: 'f' })).rejects.toThrow(
            /transfer response missing/,
        );
    });

    it('throws on non-zero retCode', async () => {
        const deps = makeDeps({ transFile: { retCode: 7, retMsg: 'denied' } });
        await expect(TransGroupFile.invoke(deps, { groupId: 1, fileId: 'f' })).rejects.toThrow(
            /code=7/,
        );
    });
});