import assert from "node:assert/strict";
import crypto from "node:crypto";
import fs from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { fileURLToPath } from "node:url";
import { cleanupServerJobDirectory, createServerJobDirectory, prepareServerJobWorkspace } from "./server-job-isolation.mjs";

const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../..");
const reportPath = path.join(root, "tests/golden/M13-04B/server-job-workspace-report.json");
const manifestPath = path.join(root, "tests/golden/M13-04B/manifest.json");
const temporary = await fs.mkdtemp(path.join(os.tmpdir(), "m13-04b-check-"));
const hashFile = async (file) => crypto.createHash("sha256").update(await fs.readFile(file)).digest("hex");
try {
  const job = await createServerJobDirectory(temporary, "server:workspace");
  const workspace = await prepareServerJobWorkspace(job, new Uint8Array([1, 2, 3, 4]));
  assert.equal((await fs.stat(workspace.sourceDirectory)).mode & 0o777, 0o555);
  assert.equal((await fs.stat(workspace.sourcePath)).mode & 0o777, 0o444);
  assert.equal((await fs.stat(workspace.outputDirectory)).mode & 0o777, 0o700);
  assert.notEqual(path.dirname(workspace.sourcePath), workspace.outputDirectory);
  let sourceWrite = "ACCEPTED";
  try { await fs.writeFile(workspace.sourcePath, new Uint8Array([9])); } catch (error) { sourceWrite = error?.code ?? "ERROR"; }
  assert.equal(sourceWrite, "EACCES");
  const outputPath = path.join(workspace.outputDirectory, "result.bin");
  await fs.writeFile(outputPath, new Uint8Array([7, 8]));
  assert.deepEqual([...await fs.readFile(outputPath)], [7, 8]);
  await cleanupServerJobDirectory(job);
  await assert.rejects(fs.stat(workspace.sourcePath), { code: "ENOENT" });
  await assert.rejects(fs.stat(outputPath), { code: "ENOENT" });
  const report = { schemaVersion: 1, task: "M13-04B", operation: "SERVER_JOB_SOURCE_READONLY_OUTPUT_ISOLATION", runtime: "NODE_SERVER_FILESYSTEM", sourceDirectoryMode: "0555", sourceFileMode: "0444", outputDirectoryMode: "0700", sourceWrite: "EACCES", outputWrite: "OK", sourceOutputDistinct: true, cleanupNoResidual: true, execution: "DISABLED", nextTask: "M13-04C" };
  if (process.env.UPDATE_M13_04B_REPORT === "1") { await fs.mkdir(path.dirname(reportPath), { recursive: true }); await fs.writeFile(reportPath, `${JSON.stringify(report, null, 2)}\n`); }
  assert.deepEqual(JSON.parse(await fs.readFile(reportPath, "utf8")), report);
  const manifest = JSON.parse(await fs.readFile(manifestPath, "utf8"));
  assert.deepEqual({ schemaVersion: manifest.schemaVersion, task: manifest.task, parentTask: manifest.parentTask, nextTask: manifest.nextTask }, { schemaVersion: 1, task: "M13-04B", parentTask: "M13-04A", nextTask: "M13-04C" });
  for (const artifact of Object.values(manifest.artifacts)) assert.equal(await hashFile(path.join(root, artifact.path)), artifact.sha256, `artifact hash mismatch ${artifact.path}`);
  process.stdout.write(`server-job-workspace-ok sourceDir=0555 sourceFile=0444 sourceWrite=EACCES outputDir=0700 outputWrite=OK distinct=1 residual=0 next=${manifest.nextTask}\n`);
} finally {
  await fs.rm(temporary, { recursive: true, force: true });
}