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

import { FetchRobotUinRanges } from '../../../src/oidb-services/contacts/fetch-robot-uin-ranges';

// Captured from QQ's 0x496_0 response and reduced to the versioned range
// config. Keeping this as wire bytes makes the test independent of the
// encoder used by the implementation.
const RESPONSE_FIXTURE = Buffer.from(
    '0896091000180022492a4708ce01120c08fee8fdb20c10fee8fdb20c' +
        '120c08cda8fed00a10cfc5ffd00a120a08c0f8e01f10c0f8e01f12' +
        '0c08c0dcb5be0e10ffe0f2be0e120c0880fd8ef80e10ffa9f1fc0e',
    'hex',
);

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

describe('FetchRobotUinRanges namespace', () => {
    it('routes the read-only request to 0x496_0 with QQ-compatible fields', async () => {
        const sender = makeSender();

        await FetchRobotUinRanges.invoke(sender);

        expect(sender.sendRawPacket).toHaveBeenCalledOnce();
        const [wireName, bytes] = sender.sendRawPacket.mock.calls[0]!;
        expect(wireName).toBe('OidbSvcTrpcTcp.0x496_0');
        const request = protobuf_decode<OidbBase<OidbRobotUinRangeRequest>>(bytes);
        expect(request.body).toEqual({
            justFetchMsgConfig: 1,
            type: 1,
            version: 0,
            aioKeywordVersion: 0,
        });
    });

    it('decodes the server version and every inclusive UIN range', async () => {
        const sender = makeSender();

        await expect(FetchRobotUinRanges.invoke(sender)).resolves.toEqual({
            version: 206,
            ranges: [
                { minUin: 3328144510, maxUin: 3328144510 },
                { minUin: 2854196301, maxUin: 2854216399 },
                { minUin: 66600000, maxUin: 66600000 },
                { minUin: 3889000000, maxUin: 3889999999 },
                { minUin: 4010000000, maxUin: 4019999999 },
            ],
        });
    });

    it('rejects a successful envelope that omits the robot range config', async () => {
        const sender = makeSender(Buffer.from('089609100018002200', 'hex'));

        await expect(FetchRobotUinRanges.invoke(sender)).rejects.toThrow(
            '0x496_0 response missing robot range config',
        );
    });

    it('rejects a robot config without its version', () => {
        expect(() =>
            FetchRobotUinRanges.deserialize(makeSender(), {
                robotConfig: {
                    ranges: [{ minUin: 3_889_000_000n, maxUin: 3_889_999_999n }],
                },
            }),
        ).toThrow('0x496_0 response missing robot range config version');
    });

    it('rejects an empty range set instead of classifying everyone as human', () => {
        expect(() =>
            FetchRobotUinRanges.deserialize(makeSender(), {
                robotConfig: { version: 206, ranges: [] },
            }),
        ).toThrow('0x496_0 response has no robot UIN ranges');
    });
});