import assert from "node:assert/strict";
import { mkdir, mkdtemp, readFile, rm, stat, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import { dirname, join } from "node:path";
import test from "node:test";
import { fileURLToPath } from "node:url";

import {
  CHECK_IDS,
  canonicalIntegrationBase,
  cleanupOwnedRun,
  createOwnedRun,
  readAndValidateOwnership,
  runIntegration,
  validateReport,
  validateRunRoot,
} from "./p5-acceptance.mjs";

const roots = [];
async function fakeRepository() {
  const root = await mkdtemp(join(tmpdir(), "p5-acceptance-repo-"));
  roots.push(root);
  await mkdir(join(root, ".artifacts", "p5-integration"), { recursive: true });
  await mkdir(join(root, ".artifacts", "p2-integration"), { recursive: true });
  await mkdir(join(root, ".artifacts", "p1-integration"), { recursive: true });
  await mkdir(join(root, ".artifacts", "manual-acceptance", "p11"), { recursive: true });
  return root;
}

test.afterEach(async () => {
  await Promise.all(roots.splice(0).map((root) => rm(root, { recursive: true, force: true })));
});

test("run roots are only canonical direct p5 integration children", async () => {
  const repositoryRoot = await fakeRepository();
  const base = canonicalIntegrationBase(repositoryRoot);
  const id = `p5-${"a".repeat(32)}`;
  assert.equal(validateRunRoot(repositoryRoot, join(base, id), id), join(base, id));
  for (const candidate of [
    base,
    join(repositoryRoot, ".artifacts", "manual-acceptance", "p11"),
    join(repositoryRoot, ".artifacts", "p1-integration", id),
    join(repositoryRoot, ".artifacts", "p2-integration", id),
    join(base, id, "nested"),
    join(base, "foreign"),
  ]) {
    assert.throws(() => validateRunRoot(repositoryRoot, candidate, id));
  }
  assert.throws(() => validateRunRoot(repositoryRoot, join(base, `p5-${"A".repeat(32)}`), `p5-${"A".repeat(32)}`));
});

test("cleanup refuses p1, p2, p11, manual, sibling, and wrong-nonce roots", async () => {
  const repositoryRoot = await fakeRepository();
  const run = await createOwnedRun({ repositoryRoot });
  await readAndValidateOwnership({ repositoryRoot, runRoot: run.root, expectedNonce: run.nonce });
  for (const bad of [
    join(repositoryRoot, ".artifacts", "p1-integration", `p1-${"b".repeat(32)}`),
    join(repositoryRoot, ".artifacts", "p2-integration", `p2-${"c".repeat(32)}`),
    join(repositoryRoot, ".artifacts", "manual-acceptance", "p11"),
    join(canonicalIntegrationBase(repositoryRoot), `p5-${"d".repeat(32)}`),
  ]) {
    await assert.rejects(cleanupOwnedRun({ repositoryRoot, runRoot: bad, expectedNonce: run.nonce }));
  }
  await assert.rejects(cleanupOwnedRun({ repositoryRoot, runRoot: run.root, expectedNonce: "0".repeat(64) }));
});

test("cleanup removes exactly one owned p5 root", async () => {
  const repositoryRoot = await fakeRepository();
  const run = await createOwnedRun({ repositoryRoot });
  const sibling = join(canonicalIntegrationBase(repositoryRoot), `p5-${"e".repeat(32)}`);
  await mkdir(sibling);
  await writeFile(join(sibling, "sentinel"), "foreign");
  await cleanupOwnedRun({ repositoryRoot, runRoot: run.root, expectedNonce: run.nonce });
  await assert.rejects(readFile(join(run.root, "ownership.json")));
  assert.equal(await readFile(join(sibling, "sentinel"), "utf8"), "foreign");
});

function resultFor(id) {
  return {
    id,
    status: "PASS",
    startedAt: "2026-08-12T00:00:00.000Z",
    finishedAt: "2026-08-12T00:00:01.000Z",
    commands: ["node"],
    artifacts: [{ path: `logs/${id}.json`, sha256: "a".repeat(64) }],
  };
}

test("report validation requires exact p5 identity, check order, and unique artifacts", () => {
  const report = {
    schemaVersion: 1,
    runId: `p5-${"f".repeat(32)}`,
    startedAt: "2026-08-12T00:00:00.000Z",
    finishedAt: "2026-08-12T00:00:10.000Z",
    command: "p5-acceptance integration --keep",
    overall: "PASS",
    checks: CHECK_IDS.map(resultFor),
  };
  assert.doesNotThrow(() => validateReport(report));
  const invalid = structuredClone(report);
  invalid.runId = `p2-${"f".repeat(32)}`;
  assert.throws(() => validateReport(invalid));
  const duplicate = structuredClone(report);
  duplicate.checks[1].artifacts[0].path = duplicate.checks[0].artifacts[0].path;
  assert.throws(() => validateReport(duplicate), /duplicated/);
  const reordered = structuredClone(report);
  reordered.checks.reverse();
  reordered.overall = "FAIL";
  assert.throws(() => validateReport(reordered));
});

test("public wrapper uses a strict empty environment", async () => {
  const wrapper = await readFile(join(dirname(fileURLToPath(import.meta.url)), "..", "..", "scripts", "p5-acceptance.sh"), "utf8");
  assert.match(wrapper, /safe_env=\(\/usr\/bin\/env -i/);
  assert.doesNotMatch(wrapper, /LANG|LC_ALL|TZ/);
  assert.doesNotMatch(wrapper, /P5_ACCEPTANCE_FAIL_AT/);
});

test("synthetic integration cleans up successful non-kept runs", async () => {
  const repositoryRoot = await fakeRepository();
  const result = await runIntegration({ repositoryRoot, keep: false, env: { P5_ACCEPTANCE_SYNTHETIC: "1" } });
  assert.equal(result.exitCode, 0);
  assert.equal(result.retained, false);
  await assert.rejects(readFile(join(result.runRoot, "ownership.json")));
});

test("synthetic integration retains kept runs with bounded reports", async () => {
  const repositoryRoot = await fakeRepository();
  const result = await runIntegration({ repositoryRoot, keep: true, env: { P5_ACCEPTANCE_SYNTHETIC: "1" } });
  assert.equal(result.exitCode, 0);
  assert.equal(result.retained, true);
  const report = JSON.parse(await readFile(join(result.runRoot, "report.json"), "utf8"));
  assert.equal(report.overall, "PASS");
  const reportMd = await readFile(join(result.runRoot, "report.md"), "utf8");
  assert.match(reportMd, /P5 automated integration: PASS/);
  assert.match(reportMd, /P5 manual acceptance: PENDING/);
  const reportJsonStat = await stat(join(result.runRoot, "report.json"));
  const reportMdStat = await stat(join(result.runRoot, "report.md"));
  assert.ok(reportJsonStat.size <= 64 * 1024, `report.json too large: ${reportJsonStat.size}`);
  assert.ok(reportMdStat.size <= 32 * 1024, `report.md too large: ${reportMdStat.size}`);
});

test("synthetic injected failure retains the owned run and records a single failed report", async () => {
  const repositoryRoot = await fakeRepository();
  const result = await runIntegration({
    repositoryRoot,
    keep: false,
    env: { P5_ACCEPTANCE_SYNTHETIC: "1", P5_ACCEPTANCE_FAIL_AT: CHECK_IDS[2] },
  });
  assert.equal(result.exitCode, 1);
  assert.equal(result.retained, true);
  const report = JSON.parse(await readFile(join(result.runRoot, "report.json"), "utf8"));
  assert.equal(report.overall, "FAIL");
  const failed = report.checks.find((check) => check.id === CHECK_IDS[2]);
  assert.equal(failed.status, "FAIL");
  const roots = await readFile(join(result.runRoot, "ownership.json"), "utf8");
  assert.match(roots, /p5-acceptance/);
});