import fs from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { describe, expect, test, vi } from "vitest";
import { emitAgentEvent } from "../infra/agent-events.js";
import {
  agentCommand,
  bridgeListConnected,
  bridgeSendEvent,
  bridgeStartCalls,
  connectOk,
  getFreePort,
  installGatewayTestHooks,
  onceMessage,
  rpcReq,
  startGatewayServer,
  startServerWithClient,
  testState,
  writeSessionStore,
} from "./test-helpers.js";

const _decodeWsData = (data: unknown): string => {
  if (typeof data === "string") return data;
  if (Buffer.isBuffer(data)) return data.toString("utf-8");
  if (Array.isArray(data)) return Buffer.concat(data).toString("utf-8");
  if (data instanceof ArrayBuffer) return Buffer.from(data).toString("utf-8");
  if (ArrayBuffer.isView(data)) {
    return Buffer.from(data.buffer, data.byteOffset, data.byteLength).toString("utf-8");
  }
  return "";
};

async function waitFor(condition: () => boolean, timeoutMs = 1500) {
  const deadline = Date.now() + timeoutMs;
  while (Date.now() < deadline) {
    if (condition()) return;
    await new Promise((r) => setTimeout(r, 5));
  }
  throw new Error("timeout waiting for condition");
}

installGatewayTestHooks();

describe("gateway server node/bridge", () => {
  test("node.list includes connected unpaired nodes with capabilities + commands", async () => {
    const homeDir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-home-"));
    const prevHome = process.env.HOME;
    process.env.HOME = homeDir;

    try {
      const { server, ws } = await startServerWithClient();
      try {
        await connectOk(ws);

        const reqRes = await rpcReq<{
          status?: string;
          request?: { requestId?: string };
        }>(ws, "node.pair.request", {
          nodeId: "p1",
          displayName: "Paired",
          platform: "iPadOS",
          version: "dev",
          deviceFamily: "iPad",
          modelIdentifier: "iPad16,6",
          caps: ["canvas"],
          commands: ["canvas.eval"],
          remoteIp: "10.0.0.10",
        });
        expect(reqRes.ok).toBe(true);
        const requestId = reqRes.payload?.request?.requestId;
        expect(typeof requestId).toBe("string");

        const approveRes = await rpcReq(ws, "node.pair.approve", { requestId });
        expect(approveRes.ok).toBe(true);

        bridgeListConnected.mockReturnValueOnce([
          {
            nodeId: "p1",
            displayName: "Paired Live",
            platform: "iPadOS",
            version: "dev-live",
            remoteIp: "10.0.0.11",
            deviceFamily: "iPad",
            modelIdentifier: "iPad16,6",
            caps: ["canvas", "camera"],
            commands: ["canvas.snapshot", "canvas.eval"],
          },
          {
            nodeId: "u1",
            displayName: "Unpaired Live",
            platform: "Android",
            version: "dev",
            remoteIp: "10.0.0.12",
            deviceFamily: "Android",
            modelIdentifier: "samsung SM-X926B",
            caps: ["canvas"],
            commands: ["canvas.eval"],
          },
        ]);

        const listRes = await rpcReq<{
          nodes?: Array<{
            nodeId: string;
            paired?: boolean;
            connected?: boolean;
            caps?: string[];
            commands?: string[];
            displayName?: string;
            remoteIp?: string;
          }>;
        }>(ws, "node.list", {});
        expect(listRes.ok).toBe(true);
        const nodes = listRes.payload?.nodes ?? [];

        const pairedNode = nodes.find((n) => n.nodeId === "p1");
        expect(pairedNode).toMatchObject({
          nodeId: "p1",
          paired: true,
          connected: true,
          displayName: "Paired Live",
          remoteIp: "10.0.0.11",
        });
        expect(pairedNode?.caps?.slice().sort()).toEqual(["camera", "canvas"]);
        expect(pairedNode?.commands?.slice().sort()).toEqual(["canvas.eval", "canvas.snapshot"]);

        const unpairedNode = nodes.find((n) => n.nodeId === "u1");
        expect(unpairedNode).toMatchObject({
          nodeId: "u1",
          paired: false,
          connected: true,
          displayName: "Unpaired Live",
        });
        expect(unpairedNode?.caps).toEqual(["canvas"]);
        expect(unpairedNode?.commands).toEqual(["canvas.eval"]);
      } finally {
        ws.close();
        await server.close();
      }
    } finally {
      await fs.rm(homeDir, { recursive: true, force: true });
      if (prevHome === undefined) {
        delete process.env.HOME;
      } else {
        process.env.HOME = prevHome;
      }
    }
  });

  test("emits presence updates for bridge connect/disconnect", async () => {
    const homeDir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-home-"));
    const prevHome = process.env.HOME;
    process.env.HOME = homeDir;
    try {
      const before = bridgeStartCalls.length;
      const { server, ws } = await startServerWithClient();
      try {
        await connectOk(ws);
        const bridgeCall = bridgeStartCalls[before];
        expect(bridgeCall).toBeTruthy();

        const waitPresenceReason = async (reason: string) => {
          await onceMessage(
            ws,
            (o) => {
              if (o.type !== "event" || o.event !== "presence") return false;
              const payload = o.payload as { presence?: unknown } | null;
              const list = payload?.presence;
              if (!Array.isArray(list)) return false;
              return list.some(
                (p) =>
                  typeof p === "object" &&
                  p !== null &&
                  (p as { instanceId?: unknown }).instanceId === "node-1" &&
                  (p as { reason?: unknown }).reason === reason,
              );
            },
            3000,
          );
        };

        const presenceConnectedP = waitPresenceReason("node-connected");
        await bridgeCall?.onAuthenticated?.({
          nodeId: "node-1",
          displayName: "Node",
          platform: "ios",
          version: "1.0",
          remoteIp: "10.0.0.10",
        });
        await presenceConnectedP;

        const presenceDisconnectedP = waitPresenceReason("node-disconnected");
        await bridgeCall?.onDisconnected?.({
          nodeId: "node-1",
          displayName: "Node",
          platform: "ios",
          version: "1.0",
          remoteIp: "10.0.0.10",
        });
        await presenceDisconnectedP;
      } finally {
        try {
          ws.close();
        } catch {
          /* ignore */
        }
        await server.close();
        await fs.rm(homeDir, { recursive: true, force: true });
      }
    } finally {
      if (prevHome === undefined) {
        delete process.env.HOME;
      } else {
        process.env.HOME = prevHome;
      }
    }
  });

  test("bridge RPC chat.history returns session messages", async () => {
    const dir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-gw-"));
    testState.sessionStorePath = path.join(dir, "sessions.json");
    await writeSessionStore({
      entries: {
        main: {
          sessionId: "sess-main",
          updatedAt: Date.now(),
        },
      },
    });

    await fs.writeFile(
      path.join(dir, "sess-main.jsonl"),
      [
        JSON.stringify({
          message: {
            role: "user",
            content: [{ type: "text", text: "hi" }],
            timestamp: Date.now(),
          },
        }),
      ].join("\n"),
      "utf-8",
    );

    const port = await getFreePort();
    const server = await startGatewayServer(port);
    const bridgeCall = bridgeStartCalls.at(-1);
    expect(bridgeCall?.onRequest).toBeDefined();

    const res = await bridgeCall?.onRequest?.("ios-node", {
      id: "r1",
      method: "chat.history",
      paramsJSON: JSON.stringify({ sessionKey: "main" }),
    });

    expect(res?.ok).toBe(true);
    const payload = JSON.parse(String((res as { payloadJSON?: string }).payloadJSON ?? "{}")) as {
      sessionKey?: string;
      sessionId?: string;
      messages?: unknown[];
    };
    expect(payload.sessionKey).toBe("main");
    expect(payload.sessionId).toBe("sess-main");
    expect(Array.isArray(payload.messages)).toBe(true);
    expect(payload.messages?.length).toBeGreaterThan(0);

    await server.close();
  });

  test("bridge RPC sessions.list returns session rows", async () => {
    const dir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-gw-"));
    testState.sessionStorePath = path.join(dir, "sessions.json");
    await writeSessionStore({
      entries: {
        main: {
          sessionId: "sess-main",
          updatedAt: Date.now(),
        },
      },
    });

    const port = await getFreePort();
    const server = await startGatewayServer(port);
    const bridgeCall = bridgeStartCalls.at(-1);
    expect(bridgeCall?.onRequest).toBeDefined();

    const res = await bridgeCall?.onRequest?.("ios-node", {
      id: "r1",
      method: "sessions.list",
      paramsJSON: JSON.stringify({
        includeGlobal: true,
        includeUnknown: false,
        limit: 50,
      }),
    });

    expect(res?.ok).toBe(true);
    const payload = JSON.parse(String((res as { payloadJSON?: string }).payloadJSON ?? "{}")) as {
      sessions?: unknown[];
      count?: number;
      path?: string;
    };
    expect(Array.isArray(payload.sessions)).toBe(true);
    expect(typeof payload.count).toBe("number");
    expect(typeof payload.path).toBe("string");

    const resolveRes = await bridgeCall?.onRequest?.("ios-node", {
      id: "r2",
      method: "sessions.resolve",
      paramsJSON: JSON.stringify({ key: "main" }),
    });
    expect(resolveRes?.ok).toBe(true);
    const resolvedPayload = JSON.parse(
      String((resolveRes as { payloadJSON?: string }).payloadJSON ?? "{}"),
    ) as { key?: string };
    expect(resolvedPayload.key).toBe("agent:main:main");

    await server.close();
  });

  test("bridge chat events are pushed to subscribed nodes", async () => {
    const dir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-gw-"));
    testState.sessionStorePath = path.join(dir, "sessions.json");
    await writeSessionStore({
      entries: {
        main: {
          sessionId: "sess-main",
          updatedAt: Date.now(),
        },
      },
    });

    const port = await getFreePort();
    const server = await startGatewayServer(port);
    const bridgeCall = bridgeStartCalls.at(-1);
    expect(bridgeCall?.onEvent).toBeDefined();
    expect(bridgeCall?.onRequest).toBeDefined();

    await bridgeCall?.onEvent?.("ios-node", {
      event: "chat.subscribe",
      payloadJSON: JSON.stringify({ sessionKey: "main" }),
    });

    bridgeSendEvent.mockClear();

    const reqRes = await bridgeCall?.onRequest?.("ios-node", {
      id: "s1",
      method: "chat.send",
      paramsJSON: JSON.stringify({
        sessionKey: "main",
        message: "hello",
        idempotencyKey: "idem-bridge-chat",
        timeoutMs: 30_000,
      }),
    });
    expect(reqRes?.ok).toBe(true);

    emitAgentEvent({
      runId: "sess-main",
      seq: 1,
      ts: Date.now(),
      stream: "assistant",
      data: { text: "hi from agent" },
    });
    emitAgentEvent({
      runId: "sess-main",
      seq: 2,
      ts: Date.now(),
      stream: "lifecycle",
      data: { phase: "end" },
    });

    await new Promise((r) => setTimeout(r, 25));

    expect(bridgeSendEvent).toHaveBeenCalledWith(
      expect.objectContaining({
        nodeId: "ios-node",
        event: "agent",
      }),
    );

    expect(bridgeSendEvent).toHaveBeenCalledWith(
      expect.objectContaining({
        nodeId: "ios-node",
        event: "chat",
      }),
    );

    await server.close();
  });

  test("bridge chat.send forwards image attachments to agentCommand", async () => {
    const dir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-gw-"));
    testState.sessionStorePath = path.join(dir, "sessions.json");
    await writeSessionStore({
      entries: {
        main: {
          sessionId: "sess-main",
          updatedAt: Date.now(),
        },
      },
    });

    const port = await getFreePort();
    const server = await startGatewayServer(port);
    const bridgeCall = bridgeStartCalls.at(-1);
    expect(bridgeCall?.onRequest).toBeDefined();

    const spy = vi.mocked(agentCommand);
    const callsBefore = spy.mock.calls.length;

    const pngB64 =
      "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/woAAn8B9FD5fHAAAAAASUVORK5CYII=";

    const reqRes = await bridgeCall?.onRequest?.("ios-node", {
      id: "img-1",
      method: "chat.send",
      paramsJSON: JSON.stringify({
        sessionKey: "main",
        message: "see image",
        idempotencyKey: "idem-bridge-img",
        attachments: [
          {
            type: "image",
            fileName: "dot.png",
            content: `data:image/png;base64,${pngB64}`,
          },
        ],
      }),
    });
    expect(reqRes?.ok).toBe(true);

    await waitFor(() => spy.mock.calls.length > callsBefore, 8000);
    const call = spy.mock.calls.at(-1)?.[0] as
      | { images?: Array<{ type: string; data: string; mimeType: string }> }
      | undefined;
    expect(call?.images).toEqual([{ type: "image", data: pngB64, mimeType: "image/png" }]);

    await server.close();
  });
});