#!/usr/bin/env node
// S6: Pi session resume/history from control-plane (seedAiRuntime + hydrate).
// Requires mnote-web with MNOTE_WEB_ALLOW_DEV_FIXTURES=1 + MNOTE_PAGE_AI_PI_LAB_RUNTIME=mock.

"use strict";

const fs = require("node:fs");
const os = require("node:os");
const path = require("node:path");

const BASE = process.env.MNOTE_S6_BASE || process.env.MNOTE_PI_LAB_BASE || "http://127.0.0.1:3017";
const ACTOR_ID = process.env.MNOTE_S6_ACTOR_ID || "s6-hydrate-admin";
const AUTH = process.env.MNOTE_S6_AUTH || "Bearer s6-hydrate";
const ROOT =
  process.env.MNOTE_S6_ROOT ||
  fs.mkdtempSync(path.join(os.tmpdir(), "mnote-s6-hydrate-"));
const STAMP = Date.now();

function assert(condition, message) {
  if (!condition) throw new Error(message);
}

async function fetchJson(url, options = {}) {
  const headers = {
    "Content-Type": "application/json",
    Authorization: AUTH,
    "x-mnote-actor-id": ACTOR_ID,
    "x-mnote-actor-type": "admin",
    ...(options.headers || {}),
  };
  const res = await fetch(url, { ...options, headers });
  const text = await res.text();
  let body = {};
  try {
    body = text ? JSON.parse(text) : {};
  } catch {
    body = { raw: text };
  }
  return { status: res.status, body };
}

async function main() {
  fs.mkdirSync(ROOT, { recursive: true });
  const pagePath = `s6-hydrate-${STAMP}.md`;
  fs.writeFileSync(path.join(ROOT, pagePath), "# S6 hydrate\n", "utf8");
  const rootUri = `file://${ROOT}`;
  const workspaceId = `local-ws:${ACTOR_ID}:s6`;
  const sessionId = `pi_lab_s6_${STAMP}`;
  const runId = `pi_run_${sessionId}`;
  const piSessionDir = path.join(ROOT, "pi-session");
  const piSessionFile = path.join(piSessionDir, `${STAMP}_session.jsonl`);
  fs.mkdirSync(piSessionDir, { recursive: true });
  const historyText = `S6_HYDRATE_REPLY_${STAMP}`;
  fs.writeFileSync(
    piSessionFile,
    [
      JSON.stringify({
        id: "u1",
        type: "message",
        message: { role: "user", content: "hydrate me" },
        seq: 1,
      }),
      JSON.stringify({
        id: "a1",
        parentId: "u1",
        type: "message",
        message: {
          role: "assistant",
          content: [{ type: "text", text: historyText }],
        },
        seq: 2,
      }),
    ].join("\n") + "\n",
    "utf8",
  );

  console.log(`\n🧪 S6 Pi resume/history hydrate (base=${BASE}, session=${sessionId})\n`);

  const seed = await fetchJson(`${BASE}/api/dev/seed`, {
    method: "POST",
    body: JSON.stringify({
      seeds: [
        {
          kind: "setupWorkspace",
          user_id: ACTOR_ID,
          email: `${ACTOR_ID}@example.com`,
          username: ACTOR_ID,
          display_name: ACTOR_ID,
          role: "admin",
          password: process.env.MNOTE_E2E_PASSWORD || "MnoteE2E123!",
          workspace_id: workspaceId,
          workspace_name: "S6 hydrate",
          root_uri: rootUri,
          root_path: ROOT,
          source_kind: "local_folder",
          permission: "write",
          capabilities: ["ai"],
          grant_source: "s6_hydrate_smoke",
          grant_created_by: ACTOR_ID,
        },
        {
          kind: "seedAiRuntime",
          user_id: ACTOR_ID,
          workspace_id: workspaceId,
          document_id: pagePath,
          session_id: sessionId,
          run_id: runId,
          title: "S6 hydrate session",
          profile: "pi_lab",
          acp_runtime: "pi",
          status: "runtime_running",
          runtime_json: {
            runtimeMode: "mock",
            rootUri,
            workspaceId,
            pagePath,
            pageTitle: "S6 hydrate",
            modelProvider: "omniroute",
            modelId: "pi-fast",
            thinkingLevel: "medium",
            piSessionDir,
            piSessionFile,
            messageCount: 2,
          },
          payload_json: { message: "s6 hydrate" },
          events: [
            {
              eventType: "user_prompt",
              payloadJson: { message: "hydrate me" },
            },
            {
              eventType: "session_seeded",
              payloadJson: { source: "s6_smoke" },
            },
          ],
        },
      ],
    }),
  });
  if (seed.status === 403 && seed.body && seed.body.code === "dev_seed_disabled") {
    throw new Error(
      "S6 smoke 需要 /api/dev/seed；请以 MNOTE_WEB_ALLOW_DEV_FIXTURES=1 启动 mnote-web。",
    );
  }
  assert(
    seed.status === 200 && seed.body.ok === true,
    `/api/dev/seed failed: ${seed.status} ${JSON.stringify(seed.body)}`,
  );
  console.log("  seeded workspace + ai runtime");

  // list_sessions should surface the seeded Pi Lab run from control-plane.
  const listed = await fetchJson(
    `${BASE}/api/page-ai/pi/sessions?workspaceId=${encodeURIComponent(workspaceId)}&limit=50`,
  );
  assert(listed.status === 200 && listed.body.ok === true, `list: ${listed.status} ${JSON.stringify(listed.body)}`);
  assert(
    String(listed.body.schema) === "mnote.page_ai_pi.list_sessions.v1",
    `list schema: ${listed.body.schema}`,
  );
  const sessions = Array.isArray(listed.body.sessions) ? listed.body.sessions : [];
  const found = sessions.find((s) => String(s.sessionId) === sessionId);
  assert(found, `list_sessions missing ${sessionId}: ${JSON.stringify(sessions).slice(0, 500)}`);
  console.log(`  list_sessions includes ${sessionId} status=${found.status}`);

  // get_session_history should return the control-plane run (even without hot cache).
  const history = await fetchJson(`${BASE}/api/page-ai/pi/sessions/${encodeURIComponent(sessionId)}`);
  assert(
    history.status === 200 && history.body.ok !== false,
    `history: ${history.status} ${JSON.stringify(history.body).slice(0, 400)}`,
  );
  // Accept either structured history messages or run metadata with runtime json.
  const bodyText = JSON.stringify(history.body);
  assert(
    bodyText.includes(sessionId) ||
      bodyText.includes(runId) ||
      bodyText.includes("hydrate") ||
      bodyText.includes(historyText) ||
      bodyText.includes("pi_lab"),
    `history payload should identify session: ${bodyText.slice(0, 500)}`,
  );
  console.log("  get_session_history ok");

  // Cold path: abort uses get_session_for_context → hydrate_session_from_control_plane.
  // Session is NOT in process hot cache after seed-only; hydrate must restore it.
  const abort = await fetchJson(`${BASE}/api/page-ai/pi/abort`, {
    method: "POST",
    body: JSON.stringify({ sessionId }),
  });
  assert(
    abort.status === 200 && abort.body.ok === true && abort.body.aborted === true,
    `hydrate via abort failed (session not restored from control-plane): ${abort.status} ${JSON.stringify(abort.body)}`,
  );
  console.log("  hydrate via abort: session restored from control-plane");

  // Second operation after hydrate still works (hot cache now warm).
  const abort2 = await fetchJson(`${BASE}/api/page-ai/pi/abort`, {
    method: "POST",
    body: JSON.stringify({ sessionId }),
  });
  assert(
    abort2.status === 200 && abort2.body.ok === true,
    `warm abort: ${abort2.status} ${JSON.stringify(abort2.body)}`,
  );
  console.log("  warm-cache abort ok");

  console.log("\n✅ S6 Pi resume/history hydrate smoke passed\n");
}

main().catch((err) => {
  console.error("\n❌ S6 smoke failed:", err.message || err);
  process.exit(1);
});