import { isSupportedOpenClawNodeVersion, parseNodeReleaseVersion } from "./node-version.mjs";

// Self-contained so a different runtime can execute exactly the same probe with -e.
function probeSqlite(DatabaseSync) {
  const result = { available: false, version: null, text: false, blob: false, json: false };
  let database;
  try {
    database = new DatabaseSync(":memory:");
    result.available = true;
    const version = database.prepare("SELECT sqlite_version() AS version").get()?.version;
    result.version = typeof version === "string" ? version : null;
    const text = "a\u0000b\u0000";
    const bytes = Buffer.from(text, "utf8");
    const json = JSON.stringify({ value: text });
    database.exec("CREATE TABLE probe (text_value TEXT, blob_value BLOB, json_value TEXT)");
    database.prepare("INSERT INTO probe VALUES (?, ?, ?)").run(text, bytes, json);
    const row = database.prepare("SELECT text_value, blob_value, json_value FROM probe").get();
    result.text =
      typeof row?.text_value === "string" &&
      row.text_value.length === text.length &&
      Buffer.from(row.text_value, "utf8").equals(bytes);
    result.blob =
      row?.blob_value instanceof Uint8Array && Buffer.from(row.blob_value).equals(bytes);
    result.json = row?.json_value === json && JSON.parse(row.json_value).value === text;
  } catch (error) {
    result.error = error instanceof Error ? error.message : String(error);
  } finally {
    database?.close();
  }
  return result;
}

// The launcher and bundled runtime chunks must share one process-local result.
const capabilityCacheKey = Symbol.for("openclaw.sqliteCapabilities");
export function detectCurrentSqliteCapabilities() {
  let cachedProbe = globalThis[capabilityCacheKey];
  if (!cachedProbe) {
    try {
      cachedProbe = probeSqlite(process.getBuiltinModule?.("node:sqlite")?.DatabaseSync);
    } catch (error) {
      cachedProbe = {
        available: false,
        version: null,
        text: false,
        blob: false,
        json: false,
        error: error instanceof Error ? error.message : String(error),
      };
    }
    globalThis[capabilityCacheKey] = cachedProbe;
  }
  return cachedProbe;
}

export function isSqliteWalResetSafeVersion(value) {
  const match = /^(\d+)\.(\d+)\.(\d+)$/u.exec(value.trim());
  if (!match) {
    return false;
  }
  const [major, minor, patch] = match.slice(1).map(Number);
  if (![major, minor, patch].every(Number.isSafeInteger)) {
    return false;
  }
  return (
    major > 3 ||
    (major === 3 &&
      (minor > 51 ||
        (minor === 51 && patch >= 3) ||
        (minor === 50 && patch >= 7) ||
        (minor === 44 && patch >= 6)))
  );
}

export function nodeRuntimeFailure(version, probe) {
  const label = `Node ${version ?? "unknown"}`;
  if (!probe.available) {
    return `${label}: node:sqlite is unavailable; use 24.16+/26.1+ or a build with the fix.`;
  }
  if (!probe.text && !probe.error) {
    return `${label}: node:sqlite truncates TEXT at embedded NUL (nodejs/node#61954); use 24.16+/26.1+ or a build with the fix`;
  }
  if (probe.error || !probe.text || !probe.blob || !probe.json) {
    return `${label}: node:sqlite NUL round-trip capability probe failed; use 24.16+/26.1+ or a build with the fix.`;
  }
  if (!probe.version || !isSqliteWalResetSafeVersion(probe.version)) {
    return `${label}: SQLite ${probe.version ?? "unknown"} is not WAL-reset-safe; use SQLite 3.51.3+, 3.50.7+, or 3.44.6+ on its patched release line.`;
  }
  // Node 22/23 remain excluded until their separate compatibility work is complete.
  const release = parseNodeReleaseVersion(version);
  if (!release || release.major < 24) {
    return `${label}: openclaw requires Node >=24.16.0 <25, or >=26.1.0.`;
  }
  return null;
}

export function nodeRuntimeNote(version, probe) {
  return !nodeRuntimeFailure(version, probe) && !isSupportedOpenClawNodeVersion(version)
    ? `Node ${version}: unsupported version, capability probe passed. Supported releases: 24.16+/26.1+.`
    : null;
}

export const SQLITE_CAPABILITY_PROBE = `(${probeSqlite.toString()})(require("node:sqlite").DatabaseSync)`;