// Opt-in native inbox smoke. A deterministic localhost SSE fixture is the only
// model endpoint; no paid inference, product writes or running service restarts.
import assert from "node:assert/strict";
import { randomBytes } from "node:crypto";
import { mkdtemp, readFile, rm } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import express from "express";
import { parseAgentModelConfig } from "../../src/chat/modelConfig.js";
import { serviceOpencodeConfig } from "../../src/runtime/opencode2-config.js";
import { startOpencode2 } from "../../src/runtime/opencode2-server.js";
import { OpencodeRuntimeAdapter } from "../../src/runtime/opencode.js";
import { bindScopedConversationWorkspace, createConversationWorkspace } from "../../src/runtime/conversationWorkspace.js";
import { registerTaskAgentBridge } from "../../src/routes/task-agent-bridge.js";
import { removeRuntimeSessionContext, setRuntimeSessionContext } from "../../src/runtime/sessionContext.js";
import { startQueryMcpServer } from "../../src/mcp/query-server.js";
import { writeQueryMcpConnection } from "../../src/runtime/query-mcp-connection.js";
import { registerMcpPolicyBridge } from "../../src/routes/mcpRoutes.js";
import { QUERY_MCP_TOOL_IDS } from "../../src/runtime/product-mcp-tools.js";
import { TASK_AGENT, TASK_READER_AGENT } from "../../src/runtime/task-agent-policy.js";

const root = await mkdtemp(join(tmpdir(), "tjwater-agent-messages-smoke-"));
const previousConnectionPath = process.env.TJWATER_AGENT_MCP_CONNECTION_PATH;
const workspaceRoot = join(root, "workspaces");
const token = randomBytes(32).toString("hex");
let native: Awaited<ReturnType<typeof startOpencode2>> | undefined;
const ids: string[] = [];
const modelInputs: Array<{ messages?: Array<{ role: string; content: unknown }> }> = [];
const fixture = Bun.serve({ hostname: "127.0.0.1", port: 0, async fetch(request) {
  if (new URL(request.url).pathname !== "/v1/chat/completions") return new Response("local fixture route not found", { status: 404 });
  modelInputs.push(await request.json());
  const chunk = (delta: object, finishReason: string | null) => JSON.stringify({ id: "chatcmpl-local-fixture", object: "chat.completion.chunk",
    created: 1, model: "fake", choices: [{ index: 0, delta, finish_reason: finishReason }] });
  return new Response(`data: ${chunk({ role: "assistant", content: "Local inbox fixture completed." }, null)}\n\ndata: ${chunk({}, "stop")}\n\ndata: [DONE]\n\n`,
    { headers: { "Content-Type": "text/event-stream" } });
} });
const app = express(); app.use(express.json());
registerTaskAgentBridge(app, { internalToken: token, getSession: (sessionID) => native!.client.session.get({ sessionID }), hasActiveRun: () => false });
registerMcpPolicyBridge(app, { internalToken: token, runtime: { mcpReadonlyTools: () => QUERY_MCP_TOOL_IDS } });
const queryMcp = startQueryMcpServer({ internalToken: token, productClient: null, productTools: [], resolveReader: async () => null, executeLocal: async () => ({ items: [] }) });
writeQueryMcpConnection(join(root, "sessions"), queryMcp.url);
const server = app.listen(0, "127.0.0.1");
await new Promise<void>((done) => server.once("listening", done));
try {
  const models = parseAgentModelConfig({ defaults: { chat: "local-smoke/fake", task: "local-smoke/fake", learning_gate: "local-smoke/fake" }, providers: { "local-smoke": {
    name: "Deterministic local smoke fixture", api_url: `http://127.0.0.1:${fixture.port}/v1`, api_key: "SMOKE_ONLY",
    models: { fake: { capabilities: { tools: true }, limit: { context: 32768, output: 1024 } } },
  } } });
  const input = JSON.parse(await readFile("opencode.json", "utf8"));
  native = await startOpencode2({ command: process.env.OPENCODE_COMMAND ?? "opencode2", hostname: "127.0.0.1", port: 0, timeout: 30_000,
    config: serviceOpencodeConfig(input, models, workspaceRoot),
    env: { AGENT_INTERNAL_TOKEN: token, TJWATER_AGENT_WORKSPACE_ROOT: workspaceRoot,
      TJWATER_AGENT_MCP_CONNECTION_PATH: process.env.TJWATER_AGENT_MCP_CONNECTION_PATH!,
      TJWATER_AGENT_INTERNAL_BASE_URL: `http://127.0.0.1:${(server.address() as { port: number }).port}`,
      OPENCODE_DB: join(root, "native-data", "opencode.db"), XDG_DATA_HOME: join(root, "native-data"),
      XDG_CONFIG_HOME: join(root, "native-config"), XDG_CACHE_HOME: join(root, "native-cache"), XDG_STATE_HOME: join(root, "native-state") },
  });
  const initial = await createConversationWorkspace(workspaceRoot);
  const session = await native.client.session.create({ agent: "instruction", location: { directory: initial } }); ids.push(session.id);
  const directory = await bindScopedConversationWorkspace(initial, workspaceRoot, { actorKey: "actor-smoke", projectKey: "project-smoke", sessionId: session.id });
  await native.client.session.move({ sessionID: session.id, directory });
  setRuntimeSessionContext({ sessionId: session.id, clientSessionId: session.id, actorKey: "actor-smoke", projectKey: "project-smoke",
    projectId: "test-project", traceId: "test", purpose: "ordinary_chat" });
  const runtime = Object.assign(Object.create(OpencodeRuntimeAdapter.prototype), { ensureClient: async () => native!.client }) as OpencodeRuntimeAdapter;
  const required = ["mcp_tjwater_list_investigation_tasks", "mcp_tjwater_get_investigation_task", "send_task_message", "mcp_tjwater_read_agent_messages", "reply_agent_message"];
  let discovered: Array<{ id: string; direct: boolean }> = [];
  const catalogDeadline = Date.now() + 10_000;
  do {
    discovered = (await native.client.rpc.call({ rpcID: "tjwater.tools", method: "list", input: {}, location: { directory } })).output as typeof discovered;
    if (required.every((id) => discovered.some((tool) => tool.id === id && tool.direct))) break;
    await new Promise((resolve) => setTimeout(resolve, 100));
  } while (Date.now() < catalogDeadline);
  for (const id of required) {
    assert.ok(discovered.some((tool) => tool.id === id && tool.direct), `missing direct registered tool ${id}`);
    assert.equal((await native.client.permission.create({ sessionID: session.id, agent: "instruction", action: id, resources: ["*"], save: [] })).effect, "allow");
    assert.equal((await native.client.permission.create({ sessionID: session.id, agent: TASK_AGENT, action: id, resources: ["*"], save: [] })).effect,
      ["mcp_tjwater_read_agent_messages", "reply_agent_message"].includes(id) ? "allow" : "deny");
    assert.equal((await native.client.permission.create({ sessionID: session.id, agent: TASK_READER_AGENT, action: id, resources: ["*"], save: [] })).effect, "deny");
  }
  assert.ok(!discovered.some((tool) => ["message", "send_message", "session_message"].includes(tool.id)), "arbitrary-session message tool exposed");
  const nativeId = `msg_${randomBytes(16).toString("hex")}`;
  assert.equal(await runtime.agentMessageState(session.id, nativeId), "missing");
  const originalMessage = { message_id: "62000000-0000-4000-8000-000000000001", source_session_id: "investigation-source", message: "Local cooperation provenance marker" };
  await runtime.enqueueAgentMessage(session.id, nativeId, JSON.stringify({ originalMessage }), { source: "agent_message", message_id: originalMessage.message_id });
  assert.equal(await runtime.agentMessageState(session.id, nativeId), "enqueued");
  assert.equal((await native.client.session.inbox.list({ sessionID: session.id })).filter((item) => item.id === nativeId).length, 1);
  assert.ok(!(session.id in await native.client.session.active()), "resume:false unexpectedly started the idle main session");
  assert.equal(modelInputs.length, 0, "idle synthetic enqueue invoked a model");
  // Admission recovery checks state before retrying. The inbox must retain one
  // stable entry, while native duplicate admission is rejected or idempotent.
  try { await runtime.enqueueAgentMessage(session.id, nativeId, JSON.stringify({ originalMessage }), { source: "agent_message" }); }
  catch (error) { assert.ok(error instanceof Error || typeof error === "object", "invalid duplicate rejection"); }
  assert.equal((await native.client.session.inbox.list({ sessionID: session.id })).filter((item) => item.id === nativeId).length, 1);
  assert.equal(modelInputs.length, 0);
  await native.client.session.prompt({ sessionID: session.id, text: "Consume the local inbox fixture and finish." });
  await native.client.session.wait({ sessionID: session.id }, { signal: AbortSignal.timeout(30_000) });
  assert.equal(await runtime.agentMessageState(session.id, nativeId), "delivered");
  const stored = await native.client.session.message.get({ sessionID: session.id, messageID: nativeId });
  assert.equal(stored.type, "synthetic");
  assert.ok(JSON.stringify(stored).includes("originalMessage"), "native synthetic lost originalMessage provenance");
  assert.equal((await native.client.session.inbox.list({ sessionID: session.id })).filter((item) => item.id === nativeId).length, 0);
  assert.ok(modelInputs.length > 0, "local fake provider was not invoked to consume inbox");
  const fixtureText = JSON.stringify(modelInputs);
  assert.ok(fixtureText.includes("Local cooperation provenance marker"), "recipient did not receive synthetic discussion");
  assert.ok(fixtureText.includes("originalMessage"), "model context lost sender provenance");
  const receivedDiscussion = modelInputs.flatMap((input) => input.messages ?? []).filter((message) =>
    message.role !== "system" && JSON.stringify(message.content).includes("Local cooperation provenance marker"));
  assert.ok(receivedDiscussion.length > 0);
  for (const message of receivedDiscussion) assert.ok(!JSON.stringify(message.content).includes("<userinstruction>"), "synthetic discussion upgraded to userinstruction");
  assert.ok(!(session.id in await native.client.session.active()), "local fixture did not return to idle");
  console.log("Native controlled tool discovery, primary permissions, missing/enqueued/delivered state, stable-ID dedup and resume:false idle behavior passed. Only a local fake SSE provider was used.");
} finally {
  for (const id of ids.reverse()) { removeRuntimeSessionContext(id); if (native) await native.client.session.remove({ sessionID: id }).catch(() => {}); }
  native?.close(); if (native) await native.exited;
  await new Promise<void>((done) => server.close(() => done())); fixture.stop(true);
  await queryMcp.close();
  if (previousConnectionPath === undefined) delete process.env.TJWATER_AGENT_MCP_CONNECTION_PATH; else process.env.TJWATER_AGENT_MCP_CONNECTION_PATH = previousConnectionPath;
  await rm(root, { recursive: true, force: true });
}