import test from "node:test";
import assert from "node:assert/strict";
import { createRequire } from "node:module";
import { readFile, rm, writeFile } from "node:fs/promises";

const require = createRequire(import.meta.url);
const { ProductionAcceptanceHarness } = require("../src/main/production-acceptance-harness.cjs");

async function fixture(t) {
  const harness = await ProductionAcceptanceHarness.create();
  t.after(() => harness.cleanup());
  return harness;
}

test("production harness proves clean install, portable start and configuration migration", async (t) => {
  const harness = await fixture(t);
  assert.equal((await harness.install("0.10.0", "portable")).mode, "portable");
  const migration = await harness.migrate("1.0.0-rc.1");
  assert.equal(migration.previousVersion, "0.10.0");
  assert.equal(JSON.parse(await readFile(harness.paths.config, "utf8")).schemaVersion, 13);
  assert.equal(JSON.parse(await readFile(migration.backup, "utf8")).schemaVersion, 12);
});

test("authentication fixtures cover token rotation, password, SSH keys and changed host keys", async (t) => {
  const harness = await fixture(t);
  assert.equal(harness.rotateToken().tokenVersion, 2);
  assert.equal(harness.authenticate("password").authenticated, true);
  assert.equal(harness.authenticate("ssh-key", { hostFingerprint: "SHA256:fixture-host" }).authenticated, true);
  assert.throws(() => harness.authenticate("ssh-key", { hostFingerprint: "SHA256:changed" }), /fingerprint changed/);
});

test("new repositories deploy by server pull and Direct Copy at the exact Gitea SHA", async (t) => {
  const harness = await fixture(t);
  await harness.install();
  harness.authenticate("ssh-key", { hostFingerprint: harness.state.hostFingerprint });
  const serverSha = await harness.createCommit();
  assert.equal((await harness.deploy(harness.plan(serverSha, "server-git"))).status, "success");
  const copySha = await harness.createCommit("fix: direct copy fixture");
  assert.equal((await harness.deploy(harness.plan(copySha, "push-bundle"))).status, "success");
  assert.equal(harness.state.liveSha, copySha);
});

test("existing deployments are adopted, externally updated and reconciled without replacement", async (t) => {
  const harness = await fixture(t);
  assert.deepEqual(harness.adoptExisting(), { linked: true, liveSha: harness.initialSha, preserved: true });
  const sha = await harness.createCommit();
  assert.equal(harness.externalUpdate(sha).liveSha, sha);
  assert.equal(harness.state.healthy, true);
});

test("deploy key rotation, revocation, restore and writable-key rejection fail closed", async (t) => {
  const harness = await fixture(t);
  harness.authenticate("password");
  assert.equal(harness.rotateDeployKey().rotated, true);
  assert.equal(harness.revokeDeployKey().deploymentBlocked, true);
  assert.equal(harness.restoreDeployKey().restored, true);
  harness.setKeyAccess(false);
  assert.throws(() => harness.rotateDeployKey(), /writable/);
  await assert.rejects(() => harness.deploy(harness.plan(harness.initialSha)), /Writable deploy key/);
});

test("unhealthy activation rolls back only to the exact recorded previous SHA", async (t) => {
  const harness = await fixture(t);
  harness.authenticate("password");
  harness.adoptExisting();
  const sha = await harness.createCommit();
  assert.equal((await harness.deploy(harness.plan(sha), "unhealthy")).status, "failed");
  assert.throws(() => harness.rollback("0".repeat(40)), /exact recorded/);
  const rollback = harness.rollback(harness.initialSha);
  assert.equal(rollback.status, "rolled-back");
  assert.equal(rollback.liveSha, harness.initialSha);
});

test("network failures distinguish fetch from partial activation and preserve recovery", async (t) => {
  const harness = await fixture(t);
  harness.authenticate("password");
  const sha = await harness.createCommit();
  let outcome = await harness.deploy(harness.plan(sha), "fetch-network");
  assert.deepEqual(outcome.failure, { message: "Network interrupted during fetch", partial: false });
  outcome = await harness.deploy(harness.plan(sha), "activation-network");
  assert.equal(outcome.failure.partial, true);
  assert.ok(harness.state.recovery);
});

test("application shutdown is recoverable and stale plans cannot mutate state", async (t) => {
  const harness = await fixture(t);
  harness.authenticate("password");
  const plan = harness.plan(harness.initialSha);
  harness.state.liveSha = "1".repeat(40);
  await assert.rejects(() => harness.deploy(plan), /Stale reconciliation plan/);
  const current = harness.plan(harness.initialSha);
  assert.equal((await harness.deploy(current, "shutdown")).status, "interrupted");
  assert.equal(harness.recover().status, "failed");
});

test("corrupt configuration is recoverable from the migration backup", async (t) => {
  const harness = await fixture(t);
  await harness.install();
  await harness.migrate();
  const backup = `${harness.paths.config}.backup`;
  await writeFile(harness.paths.config, "{broken", "utf8");
  await assert.rejects(() => readFile(harness.paths.config, "utf8").then(JSON.parse));
  await writeFile(harness.paths.config, await readFile(backup));
  assert.equal(JSON.parse(await readFile(harness.paths.config, "utf8")).version, "0.10.0");
});

test("release verification rejects checksum failures, missing assets and drafts without requiring paid signing", async (t) => {
  const harness = await fixture(t);
  await harness.publishRelease("1.0.0-ok");
  assert.equal((await harness.verifyRelease("1.0.0-ok")).verified, true);
  for (const [version, options, error] of [
    ["1.0.0-checksum", { badChecksum: true }, /checksum/],
    ["1.0.0-missing", { missingAsset: true }, /asset is missing/],
    ["1.0.0-draft", { draft: true }, /draft release/],
  ]) {
    await harness.publishRelease(version, options);
    await assert.rejects(() => harness.verifyRelease(version), error);
  }
});

test("large and partial inventory fixtures expose duplicates without touching production data", async (t) => {
  const harness = await fixture(t);
  const inventory = harness.inventory(24, true);
  assert.equal(inventory.workloads.length, 24);
  assert.equal(inventory.workloads.filter((item) => item.classification === "duplicate").length, 1);
  assert.equal(inventory.partial, true);
  assert.match(inventory.warnings[0], /unavailable/);
  await rm(harness.paths.server, { recursive: true, force: true });
});