import { createHash, randomBytes, randomUUID } from "node:crypto";

import { CLOUD_API_SERVICE_ID } from "../audit/index.mjs";
import { createGatewayShellRequest } from "./gateway-demo-registry.ts";
import { getHeader, readBody, sendJson, truthyFlag } from "./server-http-utils.ts";

const SESSION_COOKIE = "hwlab_session";
const SESSION_MAX_AGE_SECONDS = 60 * 60 * 24 * 7;
const DEVICE_JOB_CONTRACT_VERSION = "device-pod-job-v1";
const DEVICE_JOB_INTENTS = new Set([
  "workspace.ls",
  "workspace.cat",
  "workspace.rg",
  "workspace.apply-patch",
  "workspace.build",
  "debug.status",
  "debug.chip-id",
  "debug.download",
  "debug.reset",
  "io.ports",
  "io.uart.read",
  "io.uart.write"
]);
const ACCESS_SCHEMA_STATEMENTS = Object.freeze([
  `CREATE TABLE IF NOT EXISTS users (
    id TEXT PRIMARY KEY,
    username TEXT NOT NULL UNIQUE,
    display_name TEXT NOT NULL DEFAULT '',
    role TEXT NOT NULL CHECK (role IN ('admin', 'user')),
    status TEXT NOT NULL DEFAULT 'active' CHECK (status IN ('active', 'disabled')),
    password_hash TEXT,
    created_at TEXT NOT NULL,
    updated_at TEXT NOT NULL
  )`,
  `CREATE TABLE IF NOT EXISTS user_sessions (
    id TEXT PRIMARY KEY,
    user_id TEXT NOT NULL REFERENCES users(id),
    session_token_hash TEXT NOT NULL UNIQUE,
    created_at TEXT NOT NULL,
    last_seen_at TEXT NOT NULL,
    expires_at TEXT NOT NULL,
    revoked_at TEXT
  )`,
  `CREATE TABLE IF NOT EXISTS agent_sessions (
    id TEXT PRIMARY KEY,
    project_id TEXT,
    agent_id TEXT NOT NULL,
    status TEXT NOT NULL DEFAULT 'pending',
    started_at TEXT,
    ended_at TEXT,
    owner_user_id TEXT REFERENCES users(id),
    conversation_id TEXT,
    thread_id TEXT,
    last_trace_id TEXT,
    session_json TEXT NOT NULL DEFAULT '{}',
    updated_at TEXT
  )`,
  `ALTER TABLE agent_sessions ADD COLUMN IF NOT EXISTS owner_user_id TEXT REFERENCES users(id)`,
  `ALTER TABLE agent_sessions ADD COLUMN IF NOT EXISTS conversation_id TEXT`,
  `ALTER TABLE agent_sessions ADD COLUMN IF NOT EXISTS thread_id TEXT`,
  `ALTER TABLE agent_sessions ADD COLUMN IF NOT EXISTS last_trace_id TEXT`,
  `ALTER TABLE agent_sessions ADD COLUMN IF NOT EXISTS session_json TEXT NOT NULL DEFAULT '{}'`,
  `ALTER TABLE agent_sessions ADD COLUMN IF NOT EXISTS updated_at TEXT`,
  `CREATE INDEX IF NOT EXISTS idx_agent_sessions_owner ON agent_sessions(owner_user_id)`,
  `CREATE INDEX IF NOT EXISTS idx_agent_sessions_conversation ON agent_sessions(conversation_id)`,
  `CREATE TABLE IF NOT EXISTS device_pods (
    id TEXT PRIMARY KEY,
    name TEXT NOT NULL DEFAULT '',
    status TEXT NOT NULL DEFAULT 'active' CHECK (status IN ('active', 'disabled')),
    profile_json TEXT NOT NULL DEFAULT '{}',
    profile_hash TEXT NOT NULL DEFAULT '',
    created_at TEXT NOT NULL,
    updated_at TEXT NOT NULL
  )`,
  `CREATE TABLE IF NOT EXISTS device_pod_grants (
    device_pod_id TEXT NOT NULL REFERENCES device_pods(id) ON DELETE CASCADE,
    user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    created_by_admin_id TEXT NOT NULL REFERENCES users(id),
    created_at TEXT NOT NULL,
    PRIMARY KEY (device_pod_id, user_id)
  )`,
  `CREATE TABLE IF NOT EXISTS device_leases (
    device_pod_id TEXT PRIMARY KEY REFERENCES device_pods(id) ON DELETE CASCADE,
    holder_session_id TEXT NOT NULL REFERENCES agent_sessions(id) ON DELETE CASCADE,
    holder_user_id TEXT NOT NULL REFERENCES users(id),
    lease_token_hash TEXT NOT NULL UNIQUE,
    created_at TEXT NOT NULL,
    expires_at TEXT NOT NULL,
    released_at TEXT
  )`,
  `CREATE TABLE IF NOT EXISTS device_pod_jobs (
    id TEXT PRIMARY KEY,
    device_pod_id TEXT NOT NULL REFERENCES device_pods(id) ON DELETE CASCADE,
    owner_user_id TEXT NOT NULL REFERENCES users(id),
    status TEXT NOT NULL,
    intent TEXT NOT NULL,
    args_json TEXT NOT NULL DEFAULT '{}',
    reason TEXT NOT NULL DEFAULT '',
    trace_id TEXT NOT NULL,
    operation_id TEXT NOT NULL,
    output_json TEXT NOT NULL DEFAULT '{}',
    blocker_json TEXT NOT NULL DEFAULT '{}',
    created_at TEXT NOT NULL,
    updated_at TEXT NOT NULL,
    completed_at TEXT
  )`
]);

const MUTATING_INTENTS = new Set([
  "workspace.apply-patch",
  "workspace.build",
  "debug.download",
  "debug.reset",
  "io.uart.write"
]);

export function createAccessController(options = {}) {
  return new AccessController({
    ...options,
    store: options.store ?? accessStoreForRuntime(options.runtimeStore, options)
  });
}

function accessStoreForRuntime(runtimeStore, options = {}) {
  if (runtimeStore && typeof runtimeStore.query === "function") {
    return new PostgresAccessStore({ query: runtimeStore.query.bind(runtimeStore), now: options.now });
  }
  return new MemoryAccessStore({ now: options.now });
}

class AccessController {
  constructor({ store, env = process.env, gatewayRegistry = null, now = () => new Date().toISOString(), required = truthyFlag(env.HWLAB_ACCESS_CONTROL_REQUIRED) } = {}) {
    this.store = store;
    this.env = env;
    this.gatewayRegistry = gatewayRegistry;
    this.now = now;
    this.required = required;
    this.bootstrapAttempted = false;
  }

  async handleAuthRoute(request, response, url) {
    try {
      await this.ensureBootstrap();
      if (request.method === "GET" && url.pathname === "/auth/session") {
        const auth = await this.authenticate(request, { required: false });
        sendJson(response, 200, {
          authenticated: Boolean(auth.actor),
          actor: auth.actor ? publicActor(auth.actor) : null,
          setupRequired: await this.setupRequired(),
          contractVersion: "user-access-v1"
        });
        return;
      }

      if (request.method === "POST" && url.pathname === "/auth/login") {
        await this.handleLogin(request, response);
        return;
      }

      if (request.method === "POST" && url.pathname === "/auth/logout") {
        await this.handleLogout(request, response);
        return;
      }

      sendJson(response, 404, errorPayload("not_found", "Auth route is not implemented", 404));
    } catch (error) {
      sendAccessError(response, error);
    }
  }

  async handleAdminRoute(request, response, url) {
    try {
      await this.ensureBootstrap();
      const auth = await this.authenticate(request, { required: true });
      if (!auth.ok) return sendJson(response, auth.status, auth);
      if (auth.actor.role !== "admin") {
        return sendJson(response, 403, errorPayload("admin_required", "Only admin users can call v0.2 admin APIs", 403));
      }

    if (request.method === "POST" && url.pathname === "/v1/admin/users") {
      const body = await jsonBody(request);
      const user = await this.store.createUser({
        username: requiredText(body.username, "username"),
        displayName: textOr(body.displayName, body.username),
        role: body.role === "admin" ? "admin" : "user",
        status: body.status === "disabled" ? "disabled" : "active",
        passwordHash: hashPassword(requiredText(body.password, "password")),
        now: this.now()
      });
      return sendJson(response, 201, { created: true, user: redactedUser(user) });
    }

    if ((request.method === "POST" && url.pathname === "/v1/admin/device-pods") || (request.method === "PUT" && url.pathname.startsWith("/v1/admin/device-pods/"))) {
      const body = await jsonBody(request);
      const devicePodId = request.method === "PUT"
        ? decodeURIComponent(url.pathname.split("/").filter(Boolean)[3] ?? "")
        : textOr(body.devicePodId ?? body.id, "");
      const pod = await this.store.upsertDevicePod({
        id: requiredText(devicePodId, "devicePodId"),
        name: textOr(body.name, devicePodId),
        status: body.status === "disabled" ? "disabled" : "active",
        profile: normalizeObject(body.profile ?? body.profileJson),
        now: this.now()
      });
      return sendJson(response, request.method === "POST" ? 201 : 200, {
        upserted: true,
        devicePod: publicDevicePod(pod, { includeAdmin: true })
      });
    }

    if (request.method === "POST" && url.pathname === "/v1/admin/device-pod-grants") {
      const body = await jsonBody(request);
      const devicePodId = requiredText(body.devicePodId, "devicePodId");
      const userId = requiredText(body.userId, "userId");
      await this.requireGrantTargets({ devicePodId, userId });
      const grant = await this.store.grantDevicePod({
        devicePodId,
        userId,
        createdByAdminId: auth.actor.id,
        now: this.now()
      });
      return sendJson(response, 201, { granted: true, grant });
    }

    if (request.method === "DELETE" && url.pathname.startsWith("/v1/admin/device-pod-grants/")) {
      const [, , , devicePodId, userId] = url.pathname.split("/").filter(Boolean).map((part) => decodeURIComponent(part));
      await this.store.revokeDevicePodGrant({ devicePodId: requiredText(devicePodId, "devicePodId"), userId: requiredText(userId, "userId") });
      return sendJson(response, 200, { revoked: true, devicePodId, userId });
    }

      sendJson(response, 404, errorPayload("not_found", "Admin route is not implemented", 404));
    } catch (error) {
      sendAccessError(response, error);
    }
  }

  async handleDevicePodRoute(request, response, url) {
    try {
      await this.ensureBootstrap();
      const auth = await this.authenticate(request, { required: true });
      if (!auth.ok) return sendJson(response, auth.status, auth);

    if (request.method === "GET" && url.pathname === "/v1/device-pods") {
      const pods = await this.store.listVisibleDevicePods(auth.actor);
      return sendJson(response, 200, {
        serviceId: CLOUD_API_SERVICE_ID,
        contractVersion: "device-pod-authority-v1",
        status: "ok",
        source: authoritySource(),
        actor: publicActor(auth.actor),
        devicePods: pods.map((pod) => publicDevicePod(pod)),
        selectedDevicePodId: pods[0]?.id ?? null,
        observedAt: this.now()
      });
    }

    const parsed = parseDevicePodPath(url.pathname);
    if (!parsed) return sendJson(response, 404, errorPayload("not_found", "Device Pod route is not implemented", 404));
    const pod = await this.store.getVisibleDevicePod(auth.actor, parsed.devicePodId);
    if (!pod) return sendJson(response, 404, errorPayload("device_pod_not_found", `Device Pod ${parsed.devicePodId} is not visible to the current actor`, 404));

    if (request.method === "GET" && parsed.route === "status") return sendJson(response, 200, this.devicePodStatus(pod, auth.actor));
    if (request.method === "GET" && parsed.route === "events") return sendJson(response, 200, await this.devicePodEvents(pod, url.searchParams));
    if (request.method === "GET" && parsed.route === "debug-probe/chip-id") return sendJson(response, 200, this.devicePodProbe(pod, "debug.chip-id"));
    if (request.method === "GET" && parsed.route === "io-probe/uart/1") return sendJson(response, 200, this.devicePodProbe(pod, "io.uart.status"));
    if (request.method === "GET" && parsed.route === "io-probe/uart/1/tail") return sendJson(response, 200, this.devicePodOutputProbe(pod, url.searchParams));
    if (request.method === "POST" && parsed.route === "jobs") return this.createDevicePodJob(request, response, pod, auth.actor);
    if (request.method === "GET" && parsed.route.startsWith("jobs/")) return this.getDevicePodJob(response, pod, parsed.route, auth.actor);
    if (request.method === "POST" && parsed.route.startsWith("jobs/") && parsed.route.endsWith("/cancel")) return this.cancelDevicePodJob(response, pod, parsed.route, auth.actor);

      sendJson(response, 404, errorPayload("not_found", "Device Pod route is not implemented", 404));
    } catch (error) {
      sendAccessError(response, error);
    }
  }

  async authenticate(request, { required = this.required } = {}) {
    await this.ensureBootstrap();
    const token = sessionTokenFromRequest(request);
    if (!token) {
      return required ? errorPayload("auth_required", "Authentication is required", 401) : { ok: true, actor: null };
    }
    const session = await this.store.findSessionByTokenHash(sha256(token), this.now());
    if (!session?.user || session.user.status !== "active") {
      return errorPayload("auth_session_invalid", "Session is missing, expired, revoked, or disabled", 401);
    }
    await this.store.touchSession(session.id, this.now());
    return { ok: true, actor: session.user, session: publicSession(session) };
  }

  async handleLogin(request, response) {
    const body = await jsonBody(request);
    const user = await this.store.findUserByUsername(requiredText(body.username, "username"));
    if (!user || user.status !== "active" || !verifyPassword(user.passwordHash, requiredText(body.password, "password"))) {
      return sendJson(response, 401, errorPayload("invalid_credentials", "Username or password is invalid", 401));
    }
    const token = randomBytes(32).toString("base64url");
    const now = this.now();
    const session = await this.store.createSession({
      userId: user.id,
      tokenHash: sha256(token),
      now,
      expiresAt: new Date(Date.parse(now) + SESSION_MAX_AGE_SECONDS * 1000).toISOString()
    });
    setSessionCookie(response, token, SESSION_MAX_AGE_SECONDS);
    return sendJson(response, 200, {
      authenticated: true,
      actor: publicActor(user),
      session: publicSession({ ...session, user })
    });
  }

  async handleLogout(request, response) {
    const token = sessionTokenFromRequest(request);
    if (token) await this.store.revokeSessionByTokenHash(sha256(token), this.now());
    clearSessionCookie(response);
    return sendJson(response, 200, { authenticated: false, loggedOut: true });
  }

  async ensureBootstrap() {
    if (this.bootstrapAttempted) return;
    this.bootstrapAttempted = true;
    await this.store.ensureSchema?.();
    const count = await this.store.countUsers();
    if (count > 0) return;
    const passwordHash = textOr(this.env.HWLAB_BOOTSTRAP_ADMIN_PASSWORD_HASH, "") || (this.env.HWLAB_BOOTSTRAP_ADMIN_PASSWORD ? hashPassword(this.env.HWLAB_BOOTSTRAP_ADMIN_PASSWORD) : "");
    if (!passwordHash) return;
    await this.store.createUser({
      id: this.env.HWLAB_BOOTSTRAP_ADMIN_ID || "usr_bootstrap_admin",
      username: this.env.HWLAB_BOOTSTRAP_ADMIN_USERNAME || "admin",
      displayName: this.env.HWLAB_BOOTSTRAP_ADMIN_DISPLAY_NAME || "HWLAB Admin",
      role: "admin",
      status: "active",
      passwordHash,
      now: this.now()
    });
  }

  async setupRequired() {
    return (await this.store.countUsers()) === 0;
  }

  async recordAgentSessionOwner(input = {}) {
    await this.ensureBootstrap();
    const ownerUserId = textOr(input.ownerUserId, "");
    const sessionId = agentSessionIdForRecord(input.sessionId, input.traceId);
    if (!ownerUserId || !sessionId) return null;
    return this.store.recordAgentSessionOwner?.({
      ...input,
      sessionId,
      ownerUserId,
      projectId: textOr(input.projectId, "prj_v02_code_agent"),
      agentId: textOr(input.agentId, "hwlab-code-agent"),
      status: textOr(input.status, "active"),
      now: this.now()
    }) ?? null;
  }

  async requireGrantTargets({ devicePodId, userId }) {
    const pod = await this.store.getDevicePod(devicePodId);
    if (!pod || pod.status !== "active") {
      throw Object.assign(new Error(`Device Pod ${devicePodId} does not exist or is disabled`), { statusCode: 404, code: "device_pod_not_found" });
    }
    const user = await this.store.getUserById(userId);
    if (!user || user.status !== "active") {
      throw Object.assign(new Error(`User ${userId} does not exist or is disabled`), { statusCode: 404, code: "user_not_found" });
    }
  }

  devicePodStatus(pod, actor) {
    const route = pod.profile.route ?? {};
    const gatewaySessionId = textOr(route.gatewaySessionId, "");
    const gatewayOnline = gatewaySessionId && this.gatewayRegistry?.isOnline?.(gatewaySessionId) === true;
    const blocker = gatewayOnline ? null : gatewayDispatchBlocker(gatewaySessionId ? "gateway session is not connected" : "profile route.gatewaySessionId is missing");
    return {
      serviceId: CLOUD_API_SERVICE_ID,
      contractVersion: "device-pod-authority-v1",
      status: blocker ? "blocked" : "ok",
      observedAt: this.now(),
      source: authoritySource(),
      actor: publicActor(actor),
      devicePod: publicDevicePod(pod),
      summary: {
        devicePodId: pod.id,
        targetId: targetIdFromProfile(pod.profile),
        status: blocker ? "blocked" : "ok",
        freshness: freshness(this.now(), blocker),
        profileHash: pod.profileHash,
        blocker
      }
    };
  }

  async devicePodEvents(pod, searchParams) {
    const limit = Math.min(Math.max(Number.parseInt(searchParams.get("limit") ?? "80", 10) || 80, 1), 1000);
    const jobs = await this.store.listDevicePodJobs(pod.id, limit);
    const events = jobs.map((job) => ({
      eventId: `evt_${job.id}`,
      devicePodId: pod.id,
      targetId: targetIdFromProfile(pod.profile),
      ts: job.updatedAt,
      level: job.status === "blocked" || job.status === "failed" ? "warn" : "info",
      scope: "job",
      intent: job.intent,
      status: job.status,
      summary: job.blocker?.summary ?? `job ${job.id} ${job.status}`,
      blocker: job.blocker,
      refs: jobRefs(job)
    }));
    return {
      serviceId: CLOUD_API_SERVICE_ID,
      contractVersion: "device-pod-authority-v1",
      status: "ok",
      observedAt: this.now(),
      devicePodId: pod.id,
      targetId: targetIdFromProfile(pod.profile),
      source: authoritySource(),
      events,
      lines: events.map(formatEventLine),
      truncation: { limit, returned: events.length, truncated: jobs.length >= limit }
    };
  }

  devicePodProbe(pod, intent) {
    const status = this.devicePodStatus(pod, { id: "system_probe", role: "admin" });
    return {
      ...status,
      interface: intent.startsWith("debug") ? "debug-probe" : "io-probe",
      intent,
      blocker: status.summary.blocker,
      refs: { traceId: `trc_${pod.id}_${intent.replace(/[^a-z0-9]+/giu, "_")}` }
    };
  }

  devicePodOutputProbe(pod, searchParams) {
    return {
      ...this.devicePodProbe(pod, "io.uart.read"),
      text: "",
      bytes: 0,
      truncation: {
        maxBytes: Math.min(Math.max(Number.parseInt(searchParams.get("maxBytes") ?? "12000", 10) || 12000, 1), 12000),
        truncated: false
      }
    };
  }

  async createDevicePodJob(request, response, pod, actor) {
    const body = await jsonBody(request);
    const intent = requiredText(body.intent, "intent");
    if (!DEVICE_JOB_INTENTS.has(intent)) {
      return sendJson(response, 400, errorPayload("unsupported_device_job_intent", `Device job intent ${intent} is not supported`, 400));
    }
    const reason = textOr(body.reason, "");
    if (MUTATING_INTENTS.has(intent) && !reason) {
      return sendJson(response, 400, errorPayload("device_job_reason_required", `Device job intent ${intent} requires reason`, 400));
    }
    const traceId = `trc_devicepod_${randomUUID()}`;
    const operationId = `op_devicepod_${randomUUID()}`;
    const now = this.now();
    const route = pod.profile.route ?? {};
    const gatewaySessionId = textOr(route.gatewaySessionId, "");
    const gatewayOnline = gatewaySessionId && this.gatewayRegistry?.isOnline?.(gatewaySessionId) === true;
    const blocker = gatewayOnline ? null : gatewayDispatchBlocker(gatewaySessionId ? "gateway session is not connected" : "profile route.gatewaySessionId is missing");
    const job = await this.store.createDevicePodJob({
      id: `job_devicepod_${randomUUID()}`,
      devicePodId: pod.id,
      ownerUserId: actor.id,
      status: blocker ? "blocked" : "running",
      intent,
      args: normalizeObject(body.args),
      reason,
      traceId,
      operationId,
      output: {},
      blocker,
      now,
      completedAt: blocker ? now : null
    });

    if (!blocker) this.dispatchDevicePodJob({ job, pod, actor });
    sendJson(response, blocker ? 409 : 202, this.jobPayload(job, pod));
  }

  async getDevicePodJob(response, pod, route, actor) {
    const parts = route.split("/");
    const jobId = decodeURIComponent(parts[1] ?? "");
    const job = await this.store.getDevicePodJob(pod.id, jobId);
    if (!job) return sendJson(response, 404, errorPayload("device_job_not_found", `Device job ${jobId} was not found`, 404));
    if (job.ownerUserId !== actor.id && actor.role !== "admin") return sendJson(response, 403, errorPayload("device_job_owner_required", "Only the owner or admin can inspect the job", 403));
    if (parts[2] === "output") return sendJson(response, 200, this.jobOutputPayload(job, pod));
    return sendJson(response, 200, this.jobPayload(job, pod));
  }

  async cancelDevicePodJob(response, pod, route, actor) {
    const jobId = decodeURIComponent(route.split("/")[1] ?? "");
    const job = await this.store.getDevicePodJob(pod.id, jobId);
    if (!job) return sendJson(response, 404, errorPayload("device_job_not_found", `Device job ${jobId} was not found`, 404));
    if (job.ownerUserId !== actor.id && actor.role !== "admin") return sendJson(response, 403, errorPayload("device_job_owner_required", "Only the owner or admin can cancel the job", 403));
    const canceled = await this.store.updateDevicePodJob(pod.id, jobId, {
      status: terminalJobStatus(job.status) ? job.status : "canceled",
      blocker: terminalJobStatus(job.status) ? job.blocker : { code: "device_job_canceled", summary: "Device job was canceled by user" },
      completedAt: terminalJobStatus(job.status) ? job.completedAt : this.now(),
      updatedAt: this.now()
    });
    return sendJson(response, 200, this.jobPayload(canceled, pod));
  }

  dispatchDevicePodJob({ job, pod, actor }) {
    const gatewaySessionId = pod.profile.route?.gatewaySessionId;
    const request = createGatewayShellRequest({
      id: `req_${job.id}`,
      params: {
        projectId: "prj_v02_device_pod",
        gatewaySessionId,
        resourceId: pod.profile.route?.resourceId ?? "res_device_pod",
        capabilityId: pod.profile.route?.capabilityId ?? "cap_device_host_cli",
        traceId: job.traceId,
        operationId: job.operationId,
        input: {
          command: deviceHostCommand(pod.profile, job),
          cwd: pod.profile.route?.hostWorkspaceRoot,
          timeoutMs: Number.parseInt(String(job.args.timeoutMs ?? "120000"), 10) || 120000
        }
      },
      meta: { traceId: job.traceId, actorId: actor.id }
    });
    setImmediate(async () => {
      try {
        const result = await this.gatewayRegistry.enqueue({ gatewaySessionId, request, timeoutMs: 120000 });
        await this.store.updateDevicePodJob(pod.id, job.id, {
          status: result.ok ? "completed" : "failed",
          output: result,
          blocker: result.ok ? null : gatewayDispatchBlocker(result.error ?? result.status ?? "gateway dispatch failed"),
          completedAt: this.now(),
          updatedAt: this.now()
        });
      } catch (error) {
        await this.store.updateDevicePodJob(pod.id, job.id, {
          status: "failed",
          output: { error: error?.message ?? "gateway dispatch failed" },
          blocker: gatewayDispatchBlocker(error?.message ?? "gateway dispatch failed"),
          completedAt: this.now(),
          updatedAt: this.now()
        });
      }
    });
  }

  jobPayload(job, pod) {
    return {
      serviceId: CLOUD_API_SERVICE_ID,
      contractVersion: DEVICE_JOB_CONTRACT_VERSION,
      accepted: !["blocked", "failed"].includes(job.status),
      status: job.status,
      devicePodId: pod.id,
      targetId: targetIdFromProfile(pod.profile),
      profileHash: pod.profileHash,
      traceId: job.traceId,
      operationId: job.operationId,
      job: publicJob(job),
      blocker: job.blocker,
      freshness: freshness(job.updatedAt, job.blocker),
      outputUrl: `/v1/device-pods/${encodeURIComponent(pod.id)}/jobs/${encodeURIComponent(job.id)}/output`,
      cancelUrl: `/v1/device-pods/${encodeURIComponent(pod.id)}/jobs/${encodeURIComponent(job.id)}/cancel`
    };
  }

  jobOutputPayload(job, pod) {
    const text = typeof job.output?.text === "string" ? job.output.text : JSON.stringify(job.output ?? {});
    return {
      ...this.jobPayload(job, pod),
      output: job.output ?? {},
      text,
      bytes: Buffer.byteLength(text, "utf8"),
      truncation: { maxBytes: 12000, truncated: false }
    };
  }
}

class MemoryAccessStore {
  constructor({ now = () => new Date().toISOString() } = {}) {
    this.now = now;
    this.users = new Map();
    this.sessions = new Map();
    this.devicePods = new Map();
    this.grants = new Set();
    this.jobs = new Map();
    this.agentSessions = new Map();
  }

  async countUsers() { return this.users.size; }
  async getUserById(id) { return this.users.get(id) ?? null; }
  async findUserByUsername(username) { return [...this.users.values()].find((user) => user.username === username) ?? null; }
  async createUser(input) {
    const now = input.now ?? this.now();
    const existing = await this.findUserByUsername(input.username);
    const user = { id: input.id ?? existing?.id ?? `usr_${randomUUID()}`, username: input.username, displayName: input.displayName ?? existing?.displayName ?? "", role: input.role, status: input.status ?? "active", passwordHash: input.passwordHash ?? existing?.passwordHash ?? null, createdAt: existing?.createdAt ?? now, updatedAt: now };
    this.users.set(user.id, user);
    return user;
  }
  async createSession(input) {
    const session = { id: `uss_${randomUUID()}`, userId: input.userId, tokenHash: input.tokenHash, createdAt: input.now, lastSeenAt: input.now, expiresAt: input.expiresAt, revokedAt: null };
    this.sessions.set(session.id, session);
    return session;
  }
  async findSessionByTokenHash(tokenHash, now) {
    const session = [...this.sessions.values()].find((item) => item.tokenHash === tokenHash && !item.revokedAt && item.expiresAt > now) ?? null;
    return session ? { ...session, user: this.users.get(session.userId) ?? null } : null;
  }
  async touchSession(id, now) { const session = this.sessions.get(id); if (session) session.lastSeenAt = now; }
  async revokeSessionByTokenHash(tokenHash, now) { for (const session of this.sessions.values()) if (session.tokenHash === tokenHash) session.revokedAt = now; }
  async upsertDevicePod(input) {
    const existing = this.devicePods.get(input.id);
    const profile = normalizeObject(input.profile);
    const now = input.now ?? this.now();
    const pod = { id: input.id, name: input.name ?? existing?.name ?? input.id, status: input.status ?? existing?.status ?? "active", profile, profileHash: profileHash(profile), createdAt: existing?.createdAt ?? now, updatedAt: now };
    this.devicePods.set(pod.id, pod);
    return pod;
  }
  async grantDevicePod(input) { const grant = { devicePodId: input.devicePodId, userId: input.userId, createdByAdminId: input.createdByAdminId, createdAt: input.now ?? this.now() }; this.grants.add(grantKey(grant.devicePodId, grant.userId)); return grant; }
  async revokeDevicePodGrant(input) { this.grants.delete(grantKey(input.devicePodId, input.userId)); }
  async getDevicePod(id) { return this.devicePods.get(id) ?? null; }
  async listVisibleDevicePods(actor) { return [...this.devicePods.values()].filter((pod) => pod.status === "active" && (actor.role === "admin" || this.grants.has(grantKey(pod.id, actor.id)))); }
  async getVisibleDevicePod(actor, id) { return (await this.listVisibleDevicePods(actor)).find((pod) => pod.id === id) ?? null; }
  async createDevicePodJob(input) { const job = normalizeJob(input); this.jobs.set(job.id, job); return job; }
  async updateDevicePodJob(devicePodId, jobId, patch) { const job = this.jobs.get(jobId); if (!job || job.devicePodId !== devicePodId) return null; const next = { ...job, ...patch, updatedAt: patch.updatedAt ?? this.now() }; this.jobs.set(jobId, next); return next; }
  async getDevicePodJob(devicePodId, jobId) { const job = this.jobs.get(jobId); return job?.devicePodId === devicePodId ? job : null; }
  async listDevicePodJobs(devicePodId, limit) { return [...this.jobs.values()].filter((job) => job.devicePodId === devicePodId).sort((a, b) => b.updatedAt.localeCompare(a.updatedAt)).slice(0, limit); }
  async recordAgentSessionOwner(input) {
    const now = input.now ?? this.now();
    const existing = this.agentSessions.get(input.sessionId) ?? null;
    const session = normalizeAgentSessionOwnerRecord(input, existing, now);
    this.agentSessions.set(session.id, session);
    return session;
  }
  async getAgentSession(id) { return this.agentSessions.get(id) ?? null; }
}

class PostgresAccessStore extends MemoryAccessStore {
  constructor({ query, now } = {}) {
    super({ now });
    this.query = query;
    this.schemaReady = false;
  }

  async ensureSchema() {
    if (this.schemaReady) return;
    for (const sql of ACCESS_SCHEMA_STATEMENTS) await this.query(sql, []);
    this.schemaReady = true;
  }

  async countUsers() { await this.ensureSchema(); const result = await this.query("SELECT COUNT(*)::int AS count FROM users", []); return Number(result.rows?.[0]?.count ?? 0); }
  async getUserById(id) { await this.ensureSchema(); const result = await this.query("SELECT id, username, display_name, role, status, password_hash, created_at, updated_at FROM users WHERE id = $1 LIMIT 1", [id]); return pgUser(result.rows?.[0]); }
  async findUserByUsername(username) { await this.ensureSchema(); const result = await this.query("SELECT id, username, display_name, role, status, password_hash, created_at, updated_at FROM users WHERE username = $1 LIMIT 1", [username]); return pgUser(result.rows?.[0]); }
  async createUser(input) {
    await this.ensureSchema();
    const now = input.now ?? this.now();
    const user = { id: input.id ?? `usr_${randomUUID()}`, username: input.username, displayName: input.displayName ?? "", role: input.role, status: input.status ?? "active", passwordHash: input.passwordHash ?? null, createdAt: now, updatedAt: now };
    const result = await this.query("INSERT INTO users (id, username, display_name, role, status, password_hash, created_at, updated_at) VALUES ($1,$2,$3,$4,$5,$6,$7,$8) ON CONFLICT (username) DO UPDATE SET display_name = EXCLUDED.display_name, role = EXCLUDED.role, status = EXCLUDED.status, password_hash = EXCLUDED.password_hash, updated_at = EXCLUDED.updated_at RETURNING id, username, display_name, role, status, password_hash, created_at, updated_at", [user.id, user.username, user.displayName, user.role, user.status, user.passwordHash, user.createdAt, user.updatedAt]);
    return pgUser(result.rows?.[0]);
  }
  async createSession(input) { await this.ensureSchema(); const session = await super.createSession(input); await this.query("INSERT INTO user_sessions (id, user_id, session_token_hash, created_at, last_seen_at, expires_at, revoked_at) VALUES ($1,$2,$3,$4,$5,$6,$7)", [session.id, session.userId, session.tokenHash, session.createdAt, session.lastSeenAt, session.expiresAt, session.revokedAt]); return session; }
  async findSessionByTokenHash(tokenHash, now) { await this.ensureSchema(); const result = await this.query("SELECT s.id, s.user_id, s.session_token_hash, s.created_at, s.last_seen_at, s.expires_at, s.revoked_at, u.username, u.display_name, u.role, u.status, u.password_hash, u.created_at AS user_created_at, u.updated_at AS user_updated_at FROM user_sessions s JOIN users u ON u.id = s.user_id WHERE s.session_token_hash = $1 AND s.revoked_at IS NULL AND s.expires_at > $2 LIMIT 1", [tokenHash, now]); const row = result.rows?.[0]; return row ? pgSession(row) : null; }
  async touchSession(id, now) { await this.ensureSchema(); await this.query("UPDATE user_sessions SET last_seen_at = $2 WHERE id = $1", [id, now]); }
  async revokeSessionByTokenHash(tokenHash, now) { await this.ensureSchema(); await this.query("UPDATE user_sessions SET revoked_at = $2 WHERE session_token_hash = $1", [tokenHash, now]); }
  async upsertDevicePod(input) { await this.ensureSchema(); const pod = await super.upsertDevicePod(input); const result = await this.query("INSERT INTO device_pods (id, name, status, profile_json, profile_hash, created_at, updated_at) VALUES ($1,$2,$3,$4,$5,$6,$7) ON CONFLICT (id) DO UPDATE SET name = EXCLUDED.name, status = EXCLUDED.status, profile_json = EXCLUDED.profile_json, profile_hash = EXCLUDED.profile_hash, updated_at = EXCLUDED.updated_at RETURNING *", [pod.id, pod.name, pod.status, stableJson(pod.profile), pod.profileHash, pod.createdAt, pod.updatedAt]); return pgDevicePod(result.rows?.[0]); }
  async grantDevicePod(input) { await this.ensureSchema(); const grant = await super.grantDevicePod(input); await this.query("INSERT INTO device_pod_grants (device_pod_id, user_id, created_by_admin_id, created_at) VALUES ($1,$2,$3,$4) ON CONFLICT (device_pod_id, user_id) DO UPDATE SET created_by_admin_id = EXCLUDED.created_by_admin_id, created_at = EXCLUDED.created_at", [grant.devicePodId, grant.userId, grant.createdByAdminId, grant.createdAt]); return grant; }
  async revokeDevicePodGrant(input) { await this.ensureSchema(); await this.query("DELETE FROM device_pod_grants WHERE device_pod_id = $1 AND user_id = $2", [input.devicePodId, input.userId]); }
  async getDevicePod(id) { await this.ensureSchema(); const result = await this.query("SELECT * FROM device_pods WHERE id = $1 LIMIT 1", [id]); return pgDevicePod(result.rows?.[0]); }
  async listVisibleDevicePods(actor) { await this.ensureSchema(); const sql = actor.role === "admin" ? "SELECT * FROM device_pods WHERE status = 'active' ORDER BY id" : "SELECT p.* FROM device_pods p JOIN device_pod_grants g ON g.device_pod_id = p.id WHERE p.status = 'active' AND g.user_id = $1 ORDER BY p.id"; const result = await this.query(sql, actor.role === "admin" ? [] : [actor.id]); return result.rows.map(pgDevicePod); }
  async createDevicePodJob(input) { await this.ensureSchema(); const job = normalizeJob(input); await this.query("INSERT INTO device_pod_jobs (id, device_pod_id, owner_user_id, status, intent, args_json, reason, trace_id, operation_id, output_json, blocker_json, created_at, updated_at, completed_at) VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14)", jobParams(job)); return job; }
  async updateDevicePodJob(devicePodId, jobId, patch) { await this.ensureSchema(); const current = await this.getDevicePodJob(devicePodId, jobId); if (!current) return null; const next = { ...current, ...patch, updatedAt: patch.updatedAt ?? this.now() }; await this.query("UPDATE device_pod_jobs SET status=$3, output_json=$4, blocker_json=$5, updated_at=$6, completed_at=$7 WHERE device_pod_id=$1 AND id=$2", [devicePodId, jobId, next.status, stableJson(next.output ?? {}), stableJson(next.blocker ?? {}), next.updatedAt, next.completedAt]); return next; }
  async getDevicePodJob(devicePodId, jobId) { await this.ensureSchema(); const result = await this.query("SELECT * FROM device_pod_jobs WHERE device_pod_id = $1 AND id = $2 LIMIT 1", [devicePodId, jobId]); return pgJob(result.rows?.[0]); }
  async listDevicePodJobs(devicePodId, limit) { await this.ensureSchema(); const result = await this.query("SELECT * FROM device_pod_jobs WHERE device_pod_id = $1 ORDER BY updated_at DESC LIMIT $2", [devicePodId, limit]); return result.rows.map(pgJob); }
  async recordAgentSessionOwner(input) {
    await this.ensureSchema();
    const now = input.now ?? this.now();
    const session = normalizeAgentSessionOwnerRecord(input, null, now);
    const result = await this.query("INSERT INTO agent_sessions (id, project_id, agent_id, status, started_at, ended_at, owner_user_id, conversation_id, thread_id, last_trace_id, session_json, updated_at) VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12) ON CONFLICT (id) DO UPDATE SET project_id = COALESCE(EXCLUDED.project_id, agent_sessions.project_id), agent_id = EXCLUDED.agent_id, status = EXCLUDED.status, ended_at = EXCLUDED.ended_at, owner_user_id = EXCLUDED.owner_user_id, conversation_id = COALESCE(EXCLUDED.conversation_id, agent_sessions.conversation_id), thread_id = COALESCE(EXCLUDED.thread_id, agent_sessions.thread_id), last_trace_id = COALESCE(EXCLUDED.last_trace_id, agent_sessions.last_trace_id), session_json = EXCLUDED.session_json, updated_at = EXCLUDED.updated_at RETURNING id, project_id, agent_id, status, started_at, ended_at, owner_user_id, conversation_id, thread_id, last_trace_id, session_json, updated_at", [session.id, session.projectId, session.agentId, session.status, session.startedAt, session.endedAt, session.ownerUserId, session.conversationId, session.threadId, session.lastTraceId, stableJson(session.session ?? {}), session.updatedAt]);
    return pgAgentSession(result.rows?.[0]);
  }
}

function parseDevicePodPath(pathname) {
  const prefix = "/v1/device-pods/";
  if (!pathname.startsWith(prefix)) return null;
  const [devicePodId, ...rest] = pathname.slice(prefix.length).split("/").map((part) => decodeURIComponent(part)).filter(Boolean);
  return devicePodId ? { devicePodId, route: rest.join("/") } : null;
}

async function jsonBody(request) {
  const text = await readBody(request);
  try { return text ? JSON.parse(text) : {}; } catch (error) { throw Object.assign(new Error("Invalid JSON body"), { statusCode: 400, code: "parse_error", reason: error.message }); }
}

function requiredText(value, field) { const text = textOr(value, ""); if (!text) throw Object.assign(new Error(`${field} is required`), { statusCode: 400, code: "invalid_params" }); return text; }
function textOr(value, fallback) { const text = String(value ?? "").trim(); return text || fallback; }
function normalizeObject(value) { return value && typeof value === "object" && !Array.isArray(value) ? { ...value } : {}; }
function hashPassword(password) { const salt = randomBytes(16).toString("hex"); return `sha256:${salt}:${sha256(`${salt}:${password}`)}`; }
function verifyPassword(stored, password) { const [, salt, digest] = String(stored ?? "").split(":"); return Boolean(salt && digest && sha256(`${salt}:${password}`) === digest); }
function sha256(value) { return createHash("sha256").update(String(value)).digest("hex"); }
function stableJson(value) { return JSON.stringify(sortJson(value)); }
function sortJson(value) { if (Array.isArray(value)) return value.map(sortJson); if (value && typeof value === "object") return Object.fromEntries(Object.keys(value).sort().map((key) => [key, sortJson(value[key])])); return value; }
function profileHash(profile) { return `sha256:${sha256(stableJson(profile))}`; }
function grantKey(devicePodId, userId) { return `${devicePodId}\u0000${userId}`; }
function authoritySource() { return { kind: "CLOUD_API_PROFILE_AUTHORITY", serviceId: CLOUD_API_SERVICE_ID, fake: false, devLiveEvidence: false, note: "Profile, grant, lease, and job authority are owned by hwlab-cloud-api; this is not fake data." }; }
function gatewayDispatchBlocker(summary) { return { code: "gateway_dispatch_unavailable", layer: "device-pod", retryable: true, summary, userMessage: "Device Pod 已授权，但当前没有可用 gateway/device-host-cli 执行通道。" }; }
function freshness(observedAt, blocker) { return { observedAt, ageMs: 0, stale: Boolean(blocker), source: blocker ? "blocked" : "cloud-api" }; }
function publicActor(user) { return user ? { id: user.id, username: user.username, displayName: user.displayName, role: user.role, status: user.status } : null; }
function redactedUser(user) { return publicActor(user); }
function publicSession(session) { return { id: session.id, userId: session.userId, createdAt: session.createdAt, lastSeenAt: session.lastSeenAt, expiresAt: session.expiresAt, revoked: Boolean(session.revokedAt) }; }
function publicDevicePod(pod, { includeAdmin = false } = {}) { return { devicePodId: pod.id, name: pod.name, status: pod.status, targetId: targetIdFromProfile(pod.profile), profileHash: pod.profileHash, profile: redactedProfile(pod.profile), createdAt: pod.createdAt, updatedAt: pod.updatedAt, blocker: null, ...(includeAdmin ? { admin: { profileStored: true, routeStored: Boolean(pod.profile.route) } } : {}) }; }
function redactedProfile(profile = {}) { return { schemaVersion: profile.schemaVersion ?? null, target: { id: profile.target?.id ?? null }, projectWorkspace: { projectPath: profile.projectWorkspace?.projectPath ?? null, targetName: profile.projectWorkspace?.targetName ?? null, hexPath: profile.projectWorkspace?.hexPath ?? null }, debugInterface: { type: profile.debugInterface?.type ?? null }, ioInterface: { uartCount: Array.isArray(profile.ioInterface?.uart) ? profile.ioInterface.uart.length : 0 }, route: { configured: Boolean(profile.route?.gatewaySessionId), gatewaySessionId: "redacted", resourceId: profile.route?.resourceId ? "redacted" : null, capabilityId: profile.route?.capabilityId ? "redacted" : null } }; }
function targetIdFromProfile(profile = {}) { return profile.target?.id ?? profile.targetId ?? null; }
function terminalJobStatus(status) { return ["completed", "failed", "blocked", "canceled"].includes(status); }
function publicJob(job) { return { id: job.id, devicePodId: job.devicePodId, ownerUserId: job.ownerUserId, status: job.status, intent: job.intent, reason: job.reason, traceId: job.traceId, operationId: job.operationId, createdAt: job.createdAt, updatedAt: job.updatedAt, completedAt: job.completedAt }; }
function jobRefs(job) { return { jobId: job.id, traceId: job.traceId, operationId: job.operationId }; }
function formatEventLine(event) { return [event.ts?.slice(11, 19) ?? "00:00:00", event.scope?.toUpperCase() ?? "JOB", event.status, event.intent, event.summary, event.refs?.traceId ? `trace=${event.refs.traceId}` : null, event.blocker?.code ? `blocker=${event.blocker.code}` : null].filter(Boolean).join(" "); }
function normalizeJob(input) { return { id: input.id, devicePodId: input.devicePodId, ownerUserId: input.ownerUserId, status: input.status, intent: input.intent, args: normalizeObject(input.args), reason: input.reason ?? "", traceId: input.traceId, operationId: input.operationId, output: normalizeObject(input.output), blocker: input.blocker ?? null, createdAt: input.now, updatedAt: input.now, completedAt: input.completedAt ?? null }; }
function normalizeAgentSessionOwnerRecord(input, existing, now) { return { id: input.sessionId, projectId: input.projectId ?? existing?.projectId ?? "prj_v02_code_agent", agentId: input.agentId ?? existing?.agentId ?? "hwlab-code-agent", status: input.status ?? existing?.status ?? "active", startedAt: existing?.startedAt ?? input.startedAt ?? now, endedAt: input.endedAt ?? existing?.endedAt ?? null, ownerUserId: input.ownerUserId, conversationId: input.conversationId ?? existing?.conversationId ?? null, threadId: input.threadId ?? existing?.threadId ?? null, lastTraceId: input.traceId ?? input.lastTraceId ?? existing?.lastTraceId ?? null, session: normalizeObject(input.session ?? existing?.session), updatedAt: now }; }
function agentSessionIdForRecord(sessionId, traceId) { const sessionText = textOr(sessionId, ""); if (/^ses_[A-Za-z0-9_.:-]+$/u.test(sessionText)) return sessionText; const traceText = textOr(traceId, ""); return /^trc_[A-Za-z0-9_.:-]+$/u.test(traceText) ? `ses_pending_${traceText.slice(4)}` : null; }
function deviceHostCommand(profile, job) { const hostCli = textOr(profile.route?.hostCli, "node tools/device-host-cli.mjs"); return `${hostCli} ${job.intent} '${stableJson(job.args).replace(/'/gu, "'\\''")}'`; }
function sessionTokenFromRequest(request) { const auth = getHeader(request, "authorization"); if (/^Bearer\s+/iu.test(String(auth ?? ""))) return String(auth).replace(/^Bearer\s+/iu, "").trim(); const header = textOr(getHeader(request, "x-hwlab-session-token"), ""); if (header) return header; const cookie = parseCookie(getHeader(request, "cookie")); return cookie[SESSION_COOKIE] ?? ""; }
function parseCookie(value) { return Object.fromEntries(String(value ?? "").split(";").map((part) => part.trim()).filter(Boolean).map((part) => { const index = part.indexOf("="); return index > 0 ? [part.slice(0, index), decodeURIComponent(part.slice(index + 1))] : [part, ""]; })); }
function setSessionCookie(response, token, maxAge) { response.setHeader("set-cookie", `${SESSION_COOKIE}=${encodeURIComponent(token)}; Path=/; HttpOnly; SameSite=Lax; Max-Age=${maxAge}`); }
function clearSessionCookie(response) { response.setHeader("set-cookie", `${SESSION_COOKIE}=; Path=/; HttpOnly; SameSite=Lax; Max-Age=0`); }
function errorPayload(code, message, status) { return { ok: false, status, error: { code, message } }; }
function sendAccessError(response, error) { const status = error?.statusCode ?? 500; sendJson(response, status, errorPayload(error?.code ?? "access_control_error", error?.message ?? "Access control request failed", status)); }
function pgUser(row) { return row ? { id: row.id, username: row.username, displayName: row.display_name, role: row.role, status: row.status, passwordHash: row.password_hash, createdAt: row.created_at, updatedAt: row.updated_at } : null; }
function pgSession(row) { return { id: row.id, userId: row.user_id, tokenHash: row.session_token_hash, createdAt: row.created_at, lastSeenAt: row.last_seen_at, expiresAt: row.expires_at, revokedAt: row.revoked_at, user: { id: row.user_id, username: row.username, displayName: row.display_name, role: row.role, status: row.status, passwordHash: row.password_hash, createdAt: row.user_created_at, updatedAt: row.user_updated_at } }; }
function pgDevicePod(row) { return { id: row.id, name: row.name, status: row.status, profile: parseJson(row.profile_json, {}), profileHash: row.profile_hash, createdAt: row.created_at, updatedAt: row.updated_at }; }
function pgJob(row) { return row ? { id: row.id, devicePodId: row.device_pod_id, ownerUserId: row.owner_user_id, status: row.status, intent: row.intent, args: parseJson(row.args_json, {}), reason: row.reason, traceId: row.trace_id, operationId: row.operation_id, output: parseJson(row.output_json, {}), blocker: parseJson(row.blocker_json, null), createdAt: row.created_at, updatedAt: row.updated_at, completedAt: row.completed_at } : null; }
function pgAgentSession(row) { return row ? { id: row.id, projectId: row.project_id, agentId: row.agent_id, status: row.status, startedAt: row.started_at, endedAt: row.ended_at, ownerUserId: row.owner_user_id, conversationId: row.conversation_id, threadId: row.thread_id, lastTraceId: row.last_trace_id, session: parseJson(row.session_json, {}), updatedAt: row.updated_at } : null; }
function jobParams(job) { return [job.id, job.devicePodId, job.ownerUserId, job.status, job.intent, stableJson(job.args), job.reason, job.traceId, job.operationId, stableJson(job.output), stableJson(job.blocker ?? {}), job.createdAt, job.updatedAt, job.completedAt]; }
function parseJson(value, fallback) { if (!value) return fallback; if (typeof value === "object") return value; try { return JSON.parse(String(value)); } catch { return fallback; } }