import { create, fromBinary, toBinary } from '@bufbuild/protobuf';
import * as P from '@meshtastic/protobufs';
import { DatabaseSync } from 'node:sqlite';
import { beforeEach, describe, expect, it, vi } from 'vitest';
import { BROADCAST_ADDR, extractFrames, frame } from './codec.js';
import {
  KAMIL_NUM,
  configSectionFrame,
  kamilNodeInfo,
  metadataFrame,
  moduleConfigSectionFrame,
  nodeInfoFrame,
  startBridge,
  telemetryPacketFrame,
  waitFor,
} from './fake-bridge.js';
import { initMessagesTable, MeshService } from './mesh.service.js';

// live position update: POSITION_APP packet with a serialized Position in Data.payload
function positionPacketFrame(
  from: number,
  pos: { latitudeI?: number; longitudeI?: number },
): Uint8Array {
  const data = create(P.Mesh.DataSchema, {
    portnum: P.Portnums.PortNum.POSITION_APP,
    payload: toBinary(
      P.Mesh.PositionSchema,
      create(P.Mesh.PositionSchema, pos),
    ),
  });
  const pkt = create(P.Mesh.MeshPacketSchema, {
    from,
    id: 1,
    payloadVariant: { case: 'decoded', value: data },
  });
  return frame(
    toBinary(
      P.Mesh.FromRadioSchema,
      create(P.Mesh.FromRadioSchema, {
        payloadVariant: { case: 'packet', value: pkt },
      }),
    ),
  );
}

// inbound text message: TEXT_MESSAGE_APP packet with UTF-8 in Data.payload
function textPacketFrame(
  from: number,
  to: number,
  text: string,
  channel = 0,
): Uint8Array {
  const data = create(P.Mesh.DataSchema, {
    portnum: P.Portnums.PortNum.TEXT_MESSAGE_APP,
    payload: new TextEncoder().encode(text),
  });
  const pkt = create(P.Mesh.MeshPacketSchema, {
    from,
    to,
    id: 1,
    channel,
    payloadVariant: { case: 'decoded', value: data },
  });
  return frame(
    toBinary(
      P.Mesh.FromRadioSchema,
      create(P.Mesh.FromRadioSchema, {
        payloadVariant: { case: 'packet', value: pkt },
      }),
    ),
  );
}

// ACK/NACK for our sends: ROUTING_APP packet with Data.requestId = original id and a serialized Routing in the payload
function routingFrame(
  requestId: number,
  errorReason: P.Mesh.Routing_Error,
): Uint8Array {
  const data = create(P.Mesh.DataSchema, {
    portnum: P.Portnums.PortNum.ROUTING_APP,
    requestId,
    payload: toBinary(
      P.Mesh.RoutingSchema,
      create(P.Mesh.RoutingSchema, {
        variant: { case: 'errorReason', value: errorReason },
      }),
    ),
  });
  const pkt = create(P.Mesh.MeshPacketSchema, {
    from: 1,
    id: 2,
    payloadVariant: { case: 'decoded', value: data },
  });
  return frame(
    toBinary(
      P.Mesh.FromRadioSchema,
      create(P.Mesh.FromRadioSchema, {
        payloadVariant: { case: 'packet', value: pkt },
      }),
    ),
  );
}

function channelFrame(
  index: number,
  settings?: { name?: string; uplinkEnabled?: boolean },
): Uint8Array {
  const ch = create(P.Channel.ChannelSchema, {
    index,
    ...(settings
      ? {
          // psk must never leak into channels() output
          settings: {
            name: settings.name ?? '',
            psk: new Uint8Array(16).fill(7),
            uplinkEnabled: settings.uplinkEnabled ?? false,
          },
        }
      : {}),
  });
  const fr = create(P.Mesh.FromRadioSchema, {
    payloadVariant: { case: 'channel', value: ch },
  });
  return frame(toBinary(P.Mesh.FromRadioSchema, fr));
}

describe('MeshService channel pipeline', () => {
  it('collects channels from FromRadio frames and redacts keys', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      expect(svc.channels()).toEqual([]);

      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(
        channelFrame(2, { name: 'LongFast', uplinkEnabled: true }),
      );
      bridge.sockets[0].write(channelFrame(0)); // channel with no settings at all

      await waitFor(() => svc.channels().length === 2);
      expect(svc.channels()).toEqual([
        { index: 0, name: '', uplinkEnabled: false, downlinkEnabled: false },
        {
          index: 2,
          name: 'LongFast',
          uplinkEnabled: true,
          downlinkEnabled: false,
        },
      ]);
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('resets channels on reconnect (no stale data)', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    process.env.MESH_RECONNECT_MS = '50';
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(channelFrame(1, { name: 'Stale' }));
      await waitFor(() => svc.channels().length === 1);

      // drop the connection; bot reconnects and must start with an empty table
      bridge.sockets[0].destroy();
      await waitFor(() => bridge.sockets.length >= 2 && svc.status().connected);
      await waitFor(() => svc.channels().length === 0);
    } finally {
      delete process.env.MESH_RECONNECT_MS;
      svc.onModuleDestroy();
      bridge.close();
    }
  });
});

describe('MeshService connect', () => {
  it('sends want_config_id on connect and applies the initial sync', async () => {
    const out: Uint8Array[] = [];
    const bridge = await startBridge((s) => s.on('data', (c) => out.push(c)));
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(() => svc.status().connected && out.length > 0);

      const merged = new Uint8Array(out.reduce((n, c) => n + c.length, 0));
      let off = 0;
      for (const c of out) {
        merged.set(c, off);
        off += c.length;
      }
      const { packets } = extractFrames(merged);
      expect(packets.length).toBeGreaterThan(0);
      const tr = fromBinary(P.Mesh.ToRadioSchema, packets[0]);
      expect(tr.payloadVariant?.case).toBe('wantConfigId');
      const nonce =
        tr.payloadVariant && tr.payloadVariant.case === 'wantConfigId'
          ? tr.payloadVariant.value
          : -1;
      expect(nonce).toBeGreaterThan(0);

      // feed back the initial sync: myInfo, then configCompleteId echoing the nonce
      bridge.sockets[0].write(
        frame(
          toBinary(
            P.Mesh.FromRadioSchema,
            create(P.Mesh.FromRadioSchema, {
              payloadVariant: { case: 'myInfo', value: { myNodeNum: 1234 } },
            }),
          ),
        ),
      );
      bridge.sockets[0].write(
        frame(
          toBinary(
            P.Mesh.FromRadioSchema,
            create(P.Mesh.FromRadioSchema, {
              payloadVariant: { case: 'configCompleteId', value: nonce },
            }),
          ),
        ),
      );

      await waitFor(() => svc.status().myNodeNum === 1234);
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });
});

describe('MeshService send', () => {
  it('sends on the test channel (index 3) by default, never primary', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    delete process.env.MESH_SEND_CHANNEL; // default path: "test" (index 3)
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      const out: Uint8Array[] = [];
      bridge.sockets[0].on('data', (c) => out.push(c));
      const id = await svc.sendText(42, 'hello test');
      expect(id).toBeGreaterThan(0);

      const readOutbound = (): P.Mesh.MeshPacket | undefined => {
        const merged = new Uint8Array(out.reduce((n, c) => n + c.length, 0));
        let off = 0;
        for (const c of out) {
          merged.set(c, off);
          off += c.length;
        }
        const { packets } = extractFrames(merged);
        // outbound now starts with the want_config_id frame — find the text packet
        for (const p of packets) {
          const tr = fromBinary(P.Mesh.ToRadioSchema, p);
          if (tr.payloadVariant?.case === 'packet')
            return tr.payloadVariant.value;
        }
        return undefined;
      };

      await waitFor(() => readOutbound() !== undefined);
      const pkt = readOutbound()!;
      expect(pkt.channel).toBe(3); // "test" — never the primary channel (0)
      expect(pkt.to).toBe(42);
      const decoded =
        pkt.payloadVariant?.case === 'decoded'
          ? pkt.payloadVariant.value
          : undefined;
      expect(
        new TextDecoder().decode(decoded?.payload ?? new Uint8Array()),
      ).toBe('hello test');
    } finally {
      delete process.env.MESH_SEND_CHANNEL;
      svc.onModuleDestroy();
      bridge.close();
    }
  });
});

describe('MeshService node database', () => {
  it('collects NodeInfo during sync and summarizes nodes', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(nodeInfoFrame(KAMIL_NUM, kamilNodeInfo()));
      bridge.sockets[0].write(nodeInfoFrame(987654321)); // bare entry: no user/position/metrics yet

      await waitFor(async () => (await svc.nodes()).length === 2);
      expect(await svc.nodes()).toEqual([
        {
          num: KAMIL_NUM,
          longName: 'Kamil SP8MK/P',
          shortName: 'KK',
          hwModel: 'TBEAM',
          batteryLevel: 87,
          lastHeard: 1758000000,
          position: { lat: 521049637 * 1e-7, lon: 209833152 * 1e-7, alt: 123 },
        },
        { num: 987654321, lastHeard: null }, // names/hwModel/battery/position omitted when absent
      ]);
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('creates a stub entry for POSITION_APP packets from unknown nodes', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(
        positionPacketFrame(555, {
          latitudeI: 10000000,
          longitudeI: -20000000,
        }),
      );

      await waitFor(async () => (await svc.nodes()).length === 1);
      expect(await svc.nodes()).toEqual([
        { num: 555, lastHeard: null, position: { lat: 1, lon: -2 } }, // no alt sent -> omitted
      ]);
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('looks up nodes by exact num, numeric string, exact name and unique substring', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(nodeInfoFrame(KAMIL_NUM, kamilNodeInfo()));
      bridge.sockets[0].write(
        nodeInfoFrame(42, {
          user: { id: '!ot', longName: 'Other Node', shortName: 'OT' },
        }),
      );
      await waitFor(async () => (await svc.nodes()).length === 2);

      expect((await svc.node(KAMIL_NUM))?.longName).toBe('Kamil SP8MK/P'); // exact num
      expect((await svc.node(String(KAMIL_NUM)))?.num).toBe(KAMIL_NUM); // numeric string
      expect((await svc.node('kamil sp8mk/p'))?.shortName).toBe('KK'); // case-insensitive exact name
      expect((await svc.node('kamil'))?.num).toBe(KAMIL_NUM); // unique substring
      expect(await svc.node('zzz-nope')).toBeNull(); // no match
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('returns null for ambiguous name matches', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      // two nodes whose names both contain "kamil" and share the short name "KK"
      bridge.sockets[0].write(nodeInfoFrame(KAMIL_NUM, kamilNodeInfo()));
      bridge.sockets[0].write(
        nodeInfoFrame(777, {
          user: { id: '!kj', longName: 'Kamil Jr.', shortName: 'KK' },
        }),
      );
      await waitFor(async () => (await svc.nodes()).length === 2);

      expect(await svc.node('kamil')).toBeNull(); // substring matches two nodes
      expect(await svc.node('kk')).toBeNull(); // exact name matches two nodes
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('resets the node database on reconnect (no stale data)', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    process.env.MESH_RECONNECT_MS = '50';
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(nodeInfoFrame(KAMIL_NUM, kamilNodeInfo()));
      await waitFor(async () => (await svc.nodes()).length === 1);

      // drop the connection; bot reconnects and must start with an empty node DB
      bridge.sockets[0].destroy();
      await waitFor(() => bridge.sockets.length >= 2 && svc.status().connected);
      await waitFor(async () => (await svc.nodes()).length === 0);
    } finally {
      delete process.env.MESH_RECONNECT_MS;
      svc.onModuleDestroy();
      bridge.close();
    }
  });
});

describe('MeshService message history', () => {
  it('captures inbound text as rx records', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(textPacketFrame(KAMIL_NUM, 42, 'ping', 2));

      await waitFor(() => svc.messages().length === 1);
      expect(svc.messages()).toEqual([
        {
          id: 1,
          dir: 'rx',
          from: KAMIL_NUM,
          text: 'ping',
          channel: 2,
          at: expect.any(Number),
        },
      ]);
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('tracks a tx send pending -> delivered on the routing ACK', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      const id = await svc.sendText(42, 'hello test');
      expect(svc.messages()[0]).toMatchObject({
        id,
        dir: 'tx',
        to: 42,
        text: 'hello test',
        channel: 3,
        status: 'pending',
      });

      bridge.sockets[0].write(routingFrame(id, P.Mesh.Routing_Error.NONE));

      await waitFor(() => svc.messages()[0]?.status === 'delivered');
      expect(svc.messages()[0]).toMatchObject({
        id,
        dir: 'tx',
        status: 'delivered',
      });
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('marks a tx failed with the routing error reason on NACK', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      const id = await svc.sendText(42, 'will fail');
      expect(svc.messages()[0]?.status).toBe('pending');

      bridge.sockets[0].write(routingFrame(id, P.Mesh.Routing_Error.TIMEOUT));

      await waitFor(() => svc.messages()[0]?.status === 'failed');
      expect(svc.messages()[0]).toMatchObject({
        id,
        status: 'failed',
        ackError: 'TIMEOUT', // human-readable Routing.Error name
      });
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('caps history at 100 records, dropping the oldest', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      for (let i = 0; i < 105; i++)
        bridge.sockets[0].write(textPacketFrame(42, KAMIL_NUM, `m-${i}`));

      await waitFor(() => svc.messages().length === 100, 10000);
      expect(svc.messages()[0]?.text).toBe('m-104'); // newest first
      expect(svc.messages()[99]?.text).toBe('m-5'); // m-0..m-4 dropped
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });
});

describe('MeshService notify webhook', () => {
  const fetchMock = vi.fn(async (..._args: unknown[]) => undefined);
  // our own node number for the self-echo filter specs (distinct from KAMIL_NUM, an external user)
  const MY_NODE = 987654321;

  beforeEach(() => fetchMock.mockClear());

  // myInfo frame as streamed during the initial sync — sets svc.myNodeNum
  function myInfoFrame(num: number): Uint8Array {
    return frame(
      toBinary(
        P.Mesh.FromRadioSchema,
        create(P.Mesh.FromRadioSchema, {
          payloadVariant: { case: 'myInfo', value: { myNodeNum: num } },
        }),
      ),
    );
  }

  it('POSTs {text, from} to MESH_NOTIFY_URL when an rx text lands on the notify channel (default 3)', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    process.env.MESH_NOTIFY_URL = 'http://notify.example/hook';
    vi.stubGlobal('fetch', fetchMock);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(textPacketFrame(KAMIL_NUM, 42, 'ping', 3));

      await waitFor(() => fetchMock.mock.calls.length === 1);
      expect(fetchMock).toHaveBeenCalledTimes(1);
      const [url, init] = fetchMock.mock.calls[0];
      expect(url).toBe('http://notify.example/hook');
      const opts = init as {
        method?: string;
        headers?: Record<string, string>;
        body?: string;
      };
      expect(opts.method).toBe('POST');
      expect(opts.headers?.['content-type']).toBe('application/json');
      expect(JSON.parse(String(opts.body))).toEqual({
        text: 'ping',
        from: KAMIL_NUM,
      });
    } finally {
      vi.unstubAllGlobals();
      delete process.env.MESH_NOTIFY_URL;
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('does not call fetch for rx texts on other channels', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    process.env.MESH_NOTIFY_URL = 'http://notify.example/hook';
    vi.stubGlobal('fetch', fetchMock);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(textPacketFrame(KAMIL_NUM, 42, 'ping', 2));

      // the message is captured in history — but no webhook fires off-channel
      await waitFor(() => svc.messages().length === 1);
      expect(fetchMock).not.toHaveBeenCalled();
    } finally {
      vi.unstubAllGlobals();
      delete process.env.MESH_NOTIFY_URL;
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('never calls fetch when MESH_NOTIFY_URL is unset or empty', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    delete process.env.MESH_NOTIFY_URL; // unset → disabled
    vi.stubGlobal('fetch', fetchMock);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(textPacketFrame(KAMIL_NUM, 42, 'ping', 3));
      await waitFor(() => svc.messages().length === 1);
      expect(fetchMock).not.toHaveBeenCalled();

      // empty string → also disabled (a fresh service re-reads the env)
      process.env.MESH_NOTIFY_URL = '';
      const svc2 = new MeshService();
      try {
        svc2.onModuleInit();
        await waitFor(
          () => bridge.sockets.length === 2 && svc2.status().connected,
        );

        bridge.sockets[1].write(textPacketFrame(KAMIL_NUM, 42, 'ping', 3));
        await waitFor(() => svc2.messages().length === 1);
      } finally {
        delete process.env.MESH_NOTIFY_URL;
        svc2.onModuleDestroy();
      }
      expect(fetchMock).not.toHaveBeenCalled();
    } finally {
      vi.unstubAllGlobals();
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('fires the webhook for an injected message when MESH_NOTIFY_CHANNEL matches its channel (0)', async () => {
    process.env.MESH_NOTIFY_URL = 'http://notify.example/hook';
    process.env.MESH_NOTIFY_CHANNEL = '0';
    vi.stubGlobal('fetch', fetchMock);
    const svc = new MeshService();
    try {
      svc.injectMessage('hi', 42);

      expect(fetchMock).toHaveBeenCalledTimes(1);
      const [url, init] = fetchMock.mock.calls[0];
      expect(url).toBe('http://notify.example/hook');
      const opts = init as {
        method?: string;
        headers?: Record<string, string>;
        body?: string;
      };
      expect(opts.method).toBe('POST');
      expect(opts.headers?.['content-type']).toBe('application/json');
      expect(JSON.parse(String(opts.body))).toEqual({ text: 'hi', from: 42 });
    } finally {
      vi.unstubAllGlobals();
      delete process.env.MESH_NOTIFY_URL;
      delete process.env.MESH_NOTIFY_CHANNEL;
    }
  });

  it('omits `from` in the webhook body when an injected message has no sender', async () => {
    process.env.MESH_NOTIFY_URL = 'http://notify.example/hook';
    process.env.MESH_NOTIFY_CHANNEL = '0';
    vi.stubGlobal('fetch', fetchMock);
    const svc = new MeshService();
    try {
      svc.injectMessage('hi');

      expect(fetchMock).toHaveBeenCalledTimes(1);
      const [, init] = fetchMock.mock.calls[0];
      const opts = init as { body?: string };
      expect(JSON.parse(String(opts.body))).toEqual({ text: 'hi' });
    } finally {
      vi.unstubAllGlobals();
      delete process.env.MESH_NOTIFY_URL;
      delete process.env.MESH_NOTIFY_CHANNEL;
    }
  });

  it('does not call fetch for rx texts from our own node on the notify channel', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    process.env.MESH_NOTIFY_URL = 'http://notify.example/hook';
    vi.stubGlobal('fetch', fetchMock);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      // initial sync: our own node number arrives via myInfo first
      bridge.sockets[0].write(myInfoFrame(MY_NODE));
      await waitFor(() => svc.status().myNodeNum === MY_NODE);

      // an rx text from ourselves on the notify channel must not fire the webhook
      bridge.sockets[0].write(textPacketFrame(MY_NODE, 42, 'ping', 3));

      // history capture proves the packet was processed (notifyRx runs right after it)
      await waitFor(() => svc.messages().length === 1);
      expect(fetchMock).not.toHaveBeenCalled();
    } finally {
      vi.unstubAllGlobals();
      delete process.env.MESH_NOTIFY_URL;
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('does not call fetch for an injected message from our own node', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    process.env.MESH_NOTIFY_URL = 'http://notify.example/hook';
    process.env.MESH_NOTIFY_CHANNEL = '0';
    vi.stubGlobal('fetch', fetchMock);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(myInfoFrame(MY_NODE));
      await waitFor(() => svc.status().myNodeNum === MY_NODE);

      svc.injectMessage('hi', MY_NODE);

      expect(fetchMock).not.toHaveBeenCalled();
    } finally {
      vi.unstubAllGlobals();
      delete process.env.MESH_NOTIFY_URL;
      delete process.env.MESH_NOTIFY_CHANNEL;
      svc.onModuleDestroy();
      bridge.close();
    }
  });
});

describe('MeshService injectMessage', () => {
  it('injects rx records that appear newest-first in messages()', () => {
    const svc = new MeshService();
    expect(svc.messages()).toEqual([]);

    const r1 = svc.injectMessage('first');
    const r2 = svc.injectMessage('second', KAMIL_NUM);
    expect(r1.id).toBeGreaterThan(0); // random non-zero uint32, like tx ids
    expect(r2.id).toBeGreaterThan(0);

    expect(svc.messages()).toEqual([
      {
        id: r2.id,
        dir: 'rx',
        from: KAMIL_NUM,
        text: 'second',
        channel: 0,
        at: expect.any(Number),
      },
      {
        id: r1.id,
        dir: 'rx',
        text: 'first',
        channel: 0,
        at: expect.any(Number),
      },
    ]);
  });

  it('omits from when not provided and rejects empty text or invalid from', () => {
    const svc = new MeshService();
    const rec = svc.injectMessage('no sender');
    expect(svc.messages()[0]).toEqual({
      id: rec.id,
      dir: 'rx',
      text: 'no sender',
      channel: 0,
      at: expect.any(Number),
    });
    expect(svc.messages()[0]).not.toHaveProperty('from');

    for (const bad of ['', undefined]) {
      expect(() => svc.injectMessage(bad as unknown as string)).toThrow(
        'text must be a non-empty string',
      );
    }
    for (const bad of [0, -1, 42.5, BROADCAST_ADDR + 1]) {
      expect(() => svc.injectMessage('x', bad)).toThrow(/invalid node number/);
    }
    expect(svc.messages()).toHaveLength(1); // rejected calls add nothing
  });

  it('caps history at 100 records, dropping the oldest', () => {
    const svc = new MeshService();
    for (let i = 0; i < 105; i++) svc.injectMessage(`m-${i}`);
    expect(svc.messages()).toHaveLength(100);
    expect(svc.messages()[0]?.text).toBe('m-104'); // newest first
    expect(svc.messages()[99]?.text).toBe('m-5'); // m-0..m-4 dropped
  });

  it('shares the history buffer with captured packets', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      svc.injectMessage('injected');
      bridge.sockets[0].write(textPacketFrame(KAMIL_NUM, 42, 'real', 2));

      await waitFor(() => svc.messages().length === 2);
      expect(svc.messages()[0]).toMatchObject({ dir: 'rx', text: 'real' }); // newest first
      expect(svc.messages()[1]).toMatchObject({
        dir: 'rx',
        text: 'injected',
        channel: 0,
      });
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });
});

describe('MeshService telemetry', () => {
  it('captures device metrics and environment variants with from/kind/data', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      expect(svc.telemetry()).toEqual([]); // nothing before the first packet

      bridge.sockets[0].write(
        telemetryPacketFrame(KAMIL_NUM, {
          case: 'deviceMetrics',
          value: { batteryLevel: 87, voltage: 4.1, uptimeSeconds: 3600 },
        }),
      );
      bridge.sockets[0].write(
        telemetryPacketFrame(987654321, {
          case: 'environmentMetrics',
          value: { temperature: 21.5, relativeHumidity: 48 },
        }),
      );

      await waitFor(() => svc.telemetry().length === 2);
      expect(svc.telemetry()).toEqual([
        {
          from: 987654321, // newest first
          at: expect.any(Number),
          kind: 'environmentMetrics',
          // the deprecated repeated one_wire_temperature field decodes as an empty list even when unset
          data: {
            temperature: 21.5,
            relativeHumidity: 48,
            oneWireTemperature: [],
          },
        },
        {
          from: KAMIL_NUM,
          at: expect.any(Number),
          kind: 'deviceMetrics',
          // proto float is IEEE-754 single precision — 4.1 widens to this exact double
          data: {
            batteryLevel: 87,
            voltage: 4.099999904632568,
            uptimeSeconds: 3600,
          },
        },
      ]);
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('caps telemetry at 100 records, dropping the oldest', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      for (let i = 0; i < 105; i++)
        bridge.sockets[0].write(
          telemetryPacketFrame(42, {
            case: 'deviceMetrics',
            value: { batteryLevel: i },
          }),
        );

      await waitFor(() => svc.telemetry().length === 100, 10000);
      expect(svc.telemetry()[0]?.data).toEqual({ batteryLevel: 104 }); // newest first
      expect(svc.telemetry()[99]?.data).toEqual({ batteryLevel: 5 }); // i=0..4 dropped
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('resets telemetry on reconnect (no stale data)', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    process.env.MESH_RECONNECT_MS = '50';
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(
        telemetryPacketFrame(KAMIL_NUM, { case: 'deviceMetrics', value: {} }),
      );
      await waitFor(() => svc.telemetry().length === 1);

      // drop the connection; bot reconnects and must start with an empty history
      bridge.sockets[0].destroy();
      await waitFor(() => bridge.sockets.length >= 2 && svc.status().connected);
      await waitFor(() => svc.telemetry().length === 0);
    } finally {
      delete process.env.MESH_RECONNECT_MS;
      svc.onModuleDestroy();
      bridge.close();
    }
  });
});

describe('MeshService resolveDest', () => {
  it('resolves broadcast sentinels, numbers and names to node numbers', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(nodeInfoFrame(KAMIL_NUM, kamilNodeInfo()));
      await waitFor(async () => (await svc.nodes()).length === 1);

      expect(await svc.resolveDest(undefined)).toBe(BROADCAST_ADDR); // omitted → broadcast
      expect(await svc.resolveDest('')).toBe(BROADCAST_ADDR); // empty → broadcast
      expect(await svc.resolveDest('!b')).toBe(BROADCAST_ADDR);
      expect(await svc.resolveDest('BROADCAST')).toBe(BROADCAST_ADDR); // case-insensitive
      expect(await svc.resolveDest(42)).toBe(42); // number passthrough
      expect(await svc.resolveDest(String(KAMIL_NUM))).toBe(KAMIL_NUM); // numeric string
      expect(await svc.resolveDest('Kamil SP8MK/P')).toBe(KAMIL_NUM); // exact longName
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('throws for unknown names and invalid node numbers', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(nodeInfoFrame(KAMIL_NUM, kamilNodeInfo()));
      await waitFor(async () => (await svc.nodes()).length === 1);

      await expect(svc.resolveDest('zzz-nope')).rejects.toThrow(
        "no node matching 'zzz-nope'",
      );
      for (const bad of [0, -1, 42.5, BROADCAST_ADDR + 1]) {
        await expect(svc.resolveDest(bad)).rejects.toThrow(
          /invalid node number/,
        );
      }
      await expect(svc.resolveDest('0')).rejects.toThrow(/invalid node number/);
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });
});

describe('MeshService device info', () => {
  it('captures DeviceMetadata and exposes firmwareVersion', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      // before the sync: only the node number (null until myInfo arrives)
      expect(svc.deviceInfo()).toEqual({
        myNodeNum: null,
        localConfig: {},
        moduleConfig: {},
      });

      bridge.sockets[0].write(
        metadataFrame({ firmwareVersion: '2.7.0.1', hasWifi: false, role: 3 }),
      );

      await waitFor(() => svc.deviceInfo().firmwareVersion === '2.7.0.1');
      const info = svc.deviceInfo();
      expect(info.firmwareVersion).toBe('2.7.0.1');
      expect(info.metadata?.firmwareVersion).toBe('2.7.0.1'); // metadata stored as-is
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('captures config/module-config sections and redacts key material', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      const secret = 'super-secret-wifi-psk';
      bridge.sockets[0].write(
        configSectionFrame('security', {
          publicKey: new Uint8Array([1, 2, 3]),
          privateKey: new Uint8Array([4, 5, 6]),
          adminKey: [new Uint8Array([7])],
          isManaged: true,
        }),
      );
      bridge.sockets[0].write(
        configSectionFrame('network', {
          wifiEnabled: false,
          wifiSsid: 'home',
          wifiPsk: secret,
        }),
      );
      bridge.sockets[0].write(configSectionFrame('device', { role: 3 }));
      bridge.sockets[0].write(
        moduleConfigSectionFrame('telemetry', {
          environmentUpdateInterval: 900,
          powerMeasurementEnabled: true,
        }),
      );

      await waitFor(
        () =>
          Object.keys(svc.deviceInfo().localConfig).length === 3 &&
          Object.keys(svc.deviceInfo().moduleConfig).length === 1,
      );
      const info = svc.deviceInfo();
      expect(Object.keys(info.localConfig).sort()).toEqual([
        'device',
        'network',
        'security',
      ]);
      expect(info.moduleConfig.telemetry).toMatchObject({
        environmentUpdateInterval: 900,
        powerMeasurementEnabled: true,
      });

      // key material is replaced with a marker — never exposed
      expect(info.localConfig.security).toMatchObject({
        publicKey: 'REDACTED',
        privateKey: 'REDACTED',
        adminKey: 'REDACTED',
        isManaged: true, // non-secret fields pass through
      });
      expect(info.localConfig.network?.wifiPsk).toBe('REDACTED');
      const json = JSON.stringify(info);
      expect(json).not.toContain(secret);
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('serializes proto uint64 fields as strings (JSON-safe)', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      // powermonEnables is a proto uint64 — protobuf-es decodes it as native bigint
      bridge.sockets[0].write(
        configSectionFrame('power', { powermonEnables: 123n }),
      );

      await waitFor(() => svc.deviceInfo().localConfig.power !== undefined);
      const info = svc.deviceInfo();
      expect(info.localConfig.power?.powermonEnables).toBe('123'); // bigint -> decimal string
      expect(() => JSON.stringify(info)).not.toThrow(); // no "Do not know how to serialize a BigInt"
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('summarizes NodeInfo snr/hopsAway/viaMqtt when present', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    const svc = new MeshService();
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      bridge.sockets[0].write(nodeInfoFrame(KAMIL_NUM, kamilNodeInfo()));
      bridge.sockets[0].write(
        nodeInfoFrame(42, {
          user: { id: '!ot', longName: 'Other Node' },
          snr: -2.5,
          hopsAway: 1,
          viaMqtt: true,
        }),
      );

      await waitFor(async () => (await svc.nodes()).length === 2);
      const nodes = await svc.nodes();
      expect(nodes.find((n) => n.num === 42)).toEqual({
        num: 42,
        longName: 'Other Node',
        lastHeard: null,
        snr: -2.5,
        hopsAway: 1,
        viaMqtt: true,
      });
      // absent in the proto → omitted from the summary
      expect(nodes.find((n) => n.num === KAMIL_NUM)).not.toHaveProperty('snr');
    } finally {
      svc.onModuleDestroy();
      bridge.close();
    }
  });
});

describe('MeshService SQLite persistence', () => {
  it('persists an injected message row on poller tick (no manual flush)', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    process.env.MESH_POLL_MS = '50';
    const db = new DatabaseSync(':memory:');
    initMessagesTable(db);
    const svc = new MeshService(db);
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      svc.injectMessage('hello db', KAMIL_NUM);

      // the poller tick must pick it up — no flushHistory() call here
      await waitFor(
        () =>
          (
            db.prepare('SELECT COUNT(*) AS n FROM messages').get() as {
              n: number;
            }
          ).n === 1,
      );
      const row = db
        .prepare('SELECT * FROM messages WHERE text = ?')
        .get('hello db') as Record<string, unknown>;
      expect(row.dir).toBe('rx');
      expect(row.from_node).toBe(KAMIL_NUM);
      expect(row.to_node).toBeNull(); // rx rows carry no destination
      expect(row.channel).toBe(0);
      expect(row.status).toBeNull();
    } finally {
      delete process.env.MESH_POLL_MS;
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('reflects the ACK status update in the database after the next tick', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    process.env.MESH_POLL_MS = '50';
    const db = new DatabaseSync(':memory:');
    initMessagesTable(db);
    const svc = new MeshService(db);
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      const id = await svc.sendText(42, 'ack me');
      expect(svc.messages()[0]?.status).toBe('pending');

      bridge.sockets[0].write(routingFrame(id, P.Mesh.Routing_Error.NONE));
      await waitFor(() => svc.messages()[0]?.status === 'delivered');

      // the in-place status mutation must reach SQLite on the next poller tick
      // (the row may not exist before the first tick — waitFor re-checks, so stay null-safe)
      await waitFor(
        () =>
          (
            db.prepare('SELECT status FROM messages WHERE id = ?').get(id) as
              | {
                  status: string | null;
                }
              | undefined
          )?.status === 'delivered',
      );
    } finally {
      delete process.env.MESH_POLL_MS;
      svc.onModuleDestroy();
      bridge.close();
    }
  });

  it('seeds the history buffer from a pre-populated database on startup', () => {
    const db = new DatabaseSync(':memory:');
    initMessagesTable(db);
    const ins = db.prepare(
      'INSERT INTO messages(id, dir, to_node, from_node, text, channel, at, status, ack_error) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)',
    );
    for (let i = 0; i < 150; i++)
      ins.run(
        1000 + i,
        'rx',
        null,
        42,
        `seed-${i}`,
        0,
        1_700_000_000_000 + i * 1000,
        null,
        null,
      );

    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = '1'; // closed port — no real bridge needed for seeding
    const svc = new MeshService(db);
    try {
      svc.onModuleInit();
      expect(svc.messages()).toHaveLength(100); // newest 100 of the 150 rows
      expect(svc.messages()[0]).toMatchObject({
        id: 1149,
        dir: 'rx',
        from: 42,
        text: 'seed-149',
        channel: 0,
      }); // newest first
      expect(svc.messages()[99]).toMatchObject({ id: 1050, text: 'seed-50' });
      expect(svc.messages()[0]).not.toHaveProperty('status'); // rx rows carry no status
    } finally {
      delete process.env.MESH_HOST;
      delete process.env.MESH_PORT;
      svc.onModuleDestroy();
    }
  });

  it('prunes database rows beyond the retention limit (newest 1000)', () => {
    const db = new DatabaseSync(':memory:');
    initMessagesTable(db);
    const ins = db.prepare(
      'INSERT INTO messages(id, dir, to_node, from_node, text, channel, at, status, ack_error) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)',
    );
    for (let i = 0; i < 1200; i++)
      ins.run(
        5000 + i,
        'rx',
        null,
        42,
        `old-${i}`,
        0,
        1_700_000_000_000 + i * 1000,
        null,
        null,
      );

    const svc = new MeshService(db); // no onModuleInit — flushHistory() is the unit under test
    try {
      svc.flushHistory(); // empty buffer: upserts nothing, retention still applies
      expect(
        (
          db.prepare('SELECT COUNT(*) AS n FROM messages').get() as {
            n: number;
          }
        ).n,
      ).toBe(1000);
      expect(
        db.prepare('SELECT text FROM messages WHERE id = ?').get(6199),
      ).toMatchObject({ text: 'old-1199' }); // newest kept
      expect(
        db.prepare('SELECT text FROM messages WHERE id = ?').get(5199),
      ).toBeUndefined(); // oldest 200 pruned (i=0..199)
    } finally {
      svc.onModuleDestroy();
    }
  });

  it('keeps the message history across a bridge reconnect', async () => {
    const bridge = await startBridge();
    process.env.MESH_HOST = '127.0.0.1';
    process.env.MESH_PORT = String(bridge.port);
    process.env.MESH_RECONNECT_MS = '50';
    const db = new DatabaseSync(':memory:');
    initMessagesTable(db);
    const svc = new MeshService(db);
    try {
      svc.onModuleInit();
      await waitFor(
        () => bridge.sockets.length === 1 && svc.status().connected,
      );

      svc.injectMessage('survives reconnect', KAMIL_NUM);
      expect(svc.messages()).toHaveLength(1);

      // drop the connection; bot reconnects and must keep the history (unlike channels/nodes/telemetry)
      bridge.sockets[0].destroy();
      await waitFor(() => bridge.sockets.length >= 2 && svc.status().connected);
      expect(svc.messages()).toHaveLength(1);
      expect(svc.messages()[0]).toMatchObject({
        dir: 'rx',
        text: 'survives reconnect',
      });
    } finally {
      delete process.env.MESH_RECONNECT_MS;
      svc.onModuleDestroy();
      bridge.close();
    }
  });
});