// Tests for the new PR5 observability log lines:
//   - [Highway.Image] entry log on uploadImageMsgInfo
//   - [Highway] fast-upload hit when OIDB returns no uKey
//   - [Highway] OIDB-requires-bytes + PUT-done with elapsed ms
//   - [MsgPush.Unknown] unrecognized PkgType
//   - [MsgPush.Unknown] wrapper decoder unknown subType
//
// Highway transport is mocked the same way pipeline.test.ts does it so
// runNtv2Upload exercises real OIDB encode/decode but skips actual
// network I/O.

import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
import { protobuf_encode } from '@snowluma/proton';
import { subscribeLogs, type LogEntry } from '@snowluma/common/logger';

vi.mock('@snowluma/protocol/highway', () => ({
    fetchHighwaySession: vi.fn(async () => ({ sessionId: 'fake-session' })),
    uploadHighwayHttp: vi.fn(async () => undefined),
    buildHighwayExtend: vi.fn(() => new Uint8Array([0xaa, 0xbb])),
    BufferChunkSource: class BufferChunkSource {
        constructor(readonly bytes: Uint8Array) {}
    },
    PRIVATE_IMAGE_CMD_ID: 1003,
    GROUP_IMAGE_CMD_ID: 1004,
}));

import { runNtv2Upload, type MediaSubFileUpload } from '@snowluma/protocol/highway/pipeline';
import type { OidbBase } from '@snowluma/proto-defs/oidb';
import type { NTV2UploadRichMediaResp } from '@snowluma/proto-defs/highway';
import { MsgPushRegistry } from '@snowluma/protocol/msg-push/registry';
import type { MsgPushContext } from '@snowluma/protocol/msg-push/context';
import { decodeEvent0x2DC } from '@snowluma/protocol/msg-push/decoders/event-0x2dc';

function encodeOidbResponse(body: unknown): Buffer {
    return Buffer.from(
        protobuf_encode<OidbBase<NTV2UploadRichMediaResp>>({
            command: 0x11c4,
            subCommand: 100,
            errorCode: 0,
            body: body as Record<string, unknown>,
            errorMsg: '',
            reserved: 1,
        } as OidbBase<NTV2UploadRichMediaResp>),
    );
}

function fakeBridge(responseData: Buffer, uin = '12345'): any {
    return {
        identity: { uin },
        sendRawPacket: vi.fn(async () => ({
            success: true,
            gotResponse: true,
            errorCode: 0,
            errorMessage: '',
            responseData,
        })),
    };
}

let captured: LogEntry[];
let unsub: () => void;

beforeEach(() => {
    captured = [];
    unsub = subscribeLogs((e) => captured.push(e));
});

afterEach(() => {
    unsub();
});

describe('PR5 — highway pipeline logging', () => {
    it('logs fast-upload hit when the server returns no uKey', async () => {
        // upload.uKey absent → no PUT performed.
        const bridge = fakeBridge(
            encodeOidbResponse({
                upload: { msgInfo: { msgInfoBody: [], extBizInfo: {} } },
            }),
        );

        const params = {
            bridge,
            isGroup: true,
            targetIdOrUid: 67890,
            oidbCmd: 0x11c4,
            serviceCmd: 'OidbSvcTrpcTcp.0x11c4_100',
            requestId: 1,
            businessType: 1,
            uploadInfo: [{ fileInfo: { fileName: 'a.jpg' }, subFileType: 0 }],
            compatQmsgSceneType: 2,
            extBizInfo: { pic: {} },
            uploads: [
                {
                    source: 'top',
                    cmdId: 1004,
                    bytes: new Uint8Array([1, 2, 3]),
                    md5: new Uint8Array(16),
                    sha1: new Uint8Array(20),
                },
            ] as MediaSubFileUpload[],
            label: 'image',
        };

        await runNtv2Upload(params);

        const hit = captured.find(
            (e) => e.scope === 'Highway' && e.message.includes('fast-upload hit'),
        );
        expect(hit).toBeDefined();
        expect(hit!.uin).toBe(12345);
    });

    it('logs OIDB-requires-bytes and PUT-done with elapsed ms when uKey is present', async () => {
        const bridge = fakeBridge(
            encodeOidbResponse({
                upload: {
                    uKey: 'server-needs-bytes-please',
                    ipv4s: [{ ipv4: '1.2.3.4', port: 80 }],
                    msgInfo: { msgInfoBody: [], extBizInfo: {} },
                },
            }),
        );

        const params = {
            bridge,
            isGroup: true,
            targetIdOrUid: 67890,
            oidbCmd: 0x11c4,
            serviceCmd: 'OidbSvcTrpcTcp.0x11c4_100',
            requestId: 1,
            businessType: 1,
            uploadInfo: [{ fileInfo: { fileName: 'a.jpg' }, subFileType: 0 }],
            compatQmsgSceneType: 2,
            extBizInfo: { pic: {} },
            uploads: [
                {
                    source: 'top',
                    cmdId: 1004,
                    bytes: new Uint8Array(1024),
                    md5: new Uint8Array(16),
                    sha1: new Uint8Array(20),
                },
            ] as MediaSubFileUpload[],
            label: 'image',
        };

        await runNtv2Upload(params);

        const requiresBytes = captured.find(
            (e) => e.scope === 'Highway' && e.message.includes('OIDB requires bytes'),
        );
        const putDone = captured.find(
            (e) => e.scope === 'Highway' && /PUT done in \d+ms/.test(e.message),
        );

        expect(requiresBytes).toBeDefined();
        expect(putDone).toBeDefined();

        const fastHit = captured.find(
            (e) => e.scope === 'Highway' && e.message.includes('fast-upload hit'),
        );
        expect(fastHit).toBeUndefined();
    });
});

describe('PR5 — MsgPush unknown dispatch logging', () => {
    it('logs an unknown PkgType under [MsgPush.Unknown]', () => {
        const reg = new MsgPushRegistry();
        // No decoders registered → any pkgType is unknown.
        const ctx = {
            head: { msgType: 9999, subType: 0, timestamp: 0 },
            content: new Uint8Array(0),
            identity: {} as any,
            fromUin: 0,
            selfUin: 0,
        } as unknown as MsgPushContext;

        reg.decode(ctx);

        const entry = captured.find(
            (e) => e.scope === 'MsgPush.Unknown' && e.message.includes('PkgType=9999'),
        );
        expect(entry).toBeDefined();
        expect(entry!.level).toBe('debug');
    });

    it('logs an unknown wrapper subType under [MsgPush.Unknown] (Event0x2DC)', () => {
        const ctx = {
            head: { msgType: 732, subType: 999, timestamp: 0 },
            content: new Uint8Array(0),
            identity: {} as any,
            fromUin: 0,
            selfUin: 0,
        } as unknown as MsgPushContext;

        decodeEvent0x2DC(ctx);

        const entry = captured.find(
            (e) =>
                e.scope === 'MsgPush.Unknown' && /Event0x2DC unknown subType=999/.test(e.message),
        );
        expect(entry).toBeDefined();
        expect(entry!.level).toBe('debug');
    });
});