import assert from "node:assert/strict";
import { spawnSync } from "node:child_process";
import {
  mkdtempSync,
  mkdirSync,
  readFileSync,
  writeFileSync,
  rmSync,
} from "node:fs";
import { tmpdir } from "node:os";
import { dirname, join, resolve, sep } from "node:path";
import { fileURLToPath } from "node:url";
import { test } from "node:test";

const source = readFileSync(
  join(dirname(fileURLToPath(import.meta.url)), "prepare-release.ps1"),
  "utf8",
).replace(/^\ufeff/, "");
const entry = source.lastIndexOf("try {\n  Push-Location $RepoRoot");
const crlfEntry = source.lastIndexOf("try {\r\n  Push-Location $RepoRoot");
const entryOffset = Math.max(entry, crlfEntry);
assert.ok(entryOffset > 0);

function run(cwd, command, args, ok = true) {
  const result = spawnSync(command, args, {
    cwd,
    encoding: "utf8",
    timeout: 60000,
    windowsHide: true,
  });
  if (ok)
    assert.equal(
      result.status,
      0,
      `${command}: ${result.stdout}\n${result.stderr}`,
    );
  return result;
}

function fixture(t, build = "") {
  const root = mkdtempSync(join(tmpdir(), "proxywarden-release-test-"));
  t.after(() => {
    assert.ok(resolve(root).startsWith(resolve(tmpdir()) + sep));
    assert.ok(root.includes("proxywarden-release-test-"));
    rmSync(root, { recursive: true, force: true });
  });
  const repo = join(root, "repo");
  mkdirSync(repo);
  const write = (path, text) => {
    mkdirSync(dirname(join(repo, path)), { recursive: true });
    writeFileSync(join(repo, path), text);
  };
  const git = (...args) => run(repo, "git", args).stdout.trim();
  write("package.json", '{"name":"proxywarden","version":"1.2.0"}\n');
  write(
    "package-lock.json",
    '{"name":"proxywarden","version":"1.2.0","packages":{"":{"name":"proxywarden","version":"1.2.0"}}}\n',
  );
  write("src-tauri/tauri.conf.json", '{"version":"1.2.0"}\n');
  write(
    "src-tauri/Cargo.toml",
    '[package]\nname = "proxywarden"\nversion = "1.2.0"\n',
  );
  write(
    "src-tauri/Cargo.lock",
    '[[package]]\nname = "proxywarden"\nversion = "1.2.0"\n',
  );
  write(".gitignore", "node_modules/\nsrc-tauri/target/\nreleases/\n");
  for (const cli of [
    "typescript/bin/tsc",
    "vite/bin/vite.js",
    "@tauri-apps/cli/tauri.js",
    "prettier/bin/prettier.cjs",
    "eslint/bin/eslint.js",
    "vitest/vitest.mjs",
  ])
    write(`node_modules/${cli}`, "fixture");
  // Replace only expensive checks/build in this isolated copy. Git/version/artifact/push code is real.
  const stub = `
function Invoke-ReleaseChecks {}
function Invoke-ReleaseBuild {
  ${build}
  $output = Join-Path $BundleRoot 'nsis'
  New-Item -ItemType Directory -Path $output -Force | Out-Null
  [IO.File]::WriteAllText((Join-Path $output "ProxyWarden_$($targetVersion)_x64-setup.exe"), 'test artifact')
}
`;
  write(
    "scripts/prepare-release.ps1",
    "\ufeff" + source.slice(0, entryOffset) + stub + source.slice(entryOffset),
  );
  git("init", "-b", "master");
  git("config", "user.name", "Release Test");
  git("config", "user.email", "release-test@example.invalid");
  git("config", "core.autocrlf", "false");
  git("add", ".");
  git("commit", "-m", "initial");
  const remote = join(root, "origin.git");
  run(root, "git", ["init", "--bare", remote]);
  git("remote", "add", "origin", remote);
  git("push", "-u", "origin", "master");
  const release = (...args) =>
    run(
      repo,
      "pwsh",
      [
        "-NoProfile",
        "-File",
        "scripts/prepare-release.ps1",
        "-Publish",
        ...args,
      ],
      false,
    );
  const manifest = () =>
    JSON.parse(
      readFileSync(
        join(repo, "releases/proxywarden-v1.2.1/release-manifest.json"),
        "utf8",
      ).replace(/^\ufeff/, ""),
    );
  return { root, repo, remote, git, write, release, manifest };
}

test("PlanOnly is offline and leaves versions/index/refs unchanged", (t) => {
  const f = fixture(t);
  f.git("remote", "set-url", "origin", join(f.root, "absent.git"));
  const before = f.git("status", "--porcelain");
  const head = f.git("rev-parse", "HEAD");
  const result = f.release("-PlanOnly");
  assert.equal(result.status, 0, result.stderr);
  const plan = JSON.parse(result.stdout);
  assert.equal(plan.changed, false);
  assert.equal(plan.details.targetVersion, "1.2.1");
  assert.equal(f.git("status", "--porcelain"), before);
  assert.equal(f.git("rev-parse", "HEAD"), head);
});

test("release commits exact dirty source, versions both locks, tags and atomically pushes", (t) => {
  const f = fixture(t);
  f.write("feature.txt", "new feature");
  const result = f.release("-Version", "1.2.1");
  assert.equal(result.status, 0, result.stdout + result.stderr);
  const head = f.git("rev-parse", "HEAD");
  assert.equal(f.git("rev-parse", "v1.2.1^{commit}"), head);
  assert.equal(
    f.git("ls-remote", "origin", "refs/heads/master").split(/\s/)[0],
    head,
  );
  assert.equal(f.git("status", "--porcelain"), "");
  assert.equal(f.manifest().gitCommit, head);
  assert.equal(f.manifest().gitRelease.status, "pushed");
  assert.equal(f.manifest().artifacts.length, 1);
  assert.match(
    readFileSync(join(f.repo, "src-tauri/Cargo.lock"), "utf8"),
    /version = "1.2.1"/,
  );
  const repeat = f.release("-Version", "1.2.1");
  assert.notEqual(repeat.status, 0);
  assert.equal(f.git("rev-parse", "HEAD"), head);
});

test("failed build creates no commit/tag/push and preserves existing staging", (t) => {
  const f = fixture(t, "throw 'Synthetic build failure'");
  f.write("staged.txt", "staged");
  f.git("add", "staged.txt");
  const index = f.git("write-tree"),
    head = f.git("rev-parse", "HEAD");
  assert.notEqual(f.release("-Version", "1.2.1").status, 0);
  assert.equal(f.git("write-tree"), index);
  assert.equal(f.git("rev-parse", "HEAD"), head);
  assert.equal(f.git("tag", "--list"), "");
});

test("source edit during build refuses to tag an artifact from another tree", (t) => {
  const f = fixture(
    t,
    "[IO.File]::WriteAllText((Join-Path $RepoRoot 'concurrent.txt'), 'changed during build')",
  );
  const head = f.git("rev-parse", "HEAD");
  const result = f.release("-Version", "1.2.1");
  assert.notEqual(result.status, 0);
  assert.match(result.stderr, /changed during the build/);
  assert.match(result.stderr, /concurrent\.txt/);
  assert.equal(f.git("rev-parse", "HEAD"), head);
  assert.equal(f.git("tag", "--list"), "");
});

test("failed atomic push keeps artifacts and resumes without rebuilding", (t) => {
  const f = fixture(t);
  const hook = join(f.remote, "hooks/pre-receive");
  writeFileSync(hook, "#!/bin/sh\nexit 1\n");
  const before = f.git("ls-remote", "origin", "refs/heads/master");
  const failed = f.release("-Version", "1.2.1");
  assert.notEqual(failed.status, 0);
  assert.equal(f.manifest().gitRelease.status, "pending-push");
  assert.equal(f.git("ls-remote", "origin", "refs/heads/master"), before);
  assert.equal(f.git("ls-remote", "origin", "refs/tags/v1.2.1"), "");
  const commit = f.git("rev-parse", "HEAD");
  rmSync(hook);
  const resumed = f.release("-Version", "1.2.1", "-Resume");
  assert.equal(resumed.status, 0, resumed.stdout + resumed.stderr);
  assert.equal(f.git("rev-parse", "HEAD"), commit);
  assert.equal(f.manifest().gitRelease.status, "pushed");
  f.write(
    "releases/proxywarden-v1.2.1/artifacts/nsis/ProxyWarden_1.2.1_x64-setup.exe",
    "tampered",
  );
  assert.notEqual(f.release("-Version", "1.2.1", "-Resume").status, 0);
});

test("remote-only version tag and diverged branch are refused before version edits", (t) => {
  const f = fixture(t);
  f.git("tag", "v1.2.1");
  f.git("push", "origin", "refs/tags/v1.2.1");
  f.git("tag", "-d", "v1.2.1");
  const version = readFileSync(join(f.repo, "package.json"), "utf8");
  assert.notEqual(f.release("-Version", "1.2.1").status, 0);
  assert.equal(readFileSync(join(f.repo, "package.json"), "utf8"), version);
  const clone = join(f.root, "other");
  run(f.root, "git", ["clone", "--branch", "master", f.remote, clone]);
  run(clone, "git", ["config", "user.name", "Other"]);
  run(clone, "git", ["config", "user.email", "other@example.invalid"]);
  writeFileSync(join(clone, "remote-change.txt"), "remote");
  run(clone, "git", ["add", "."]);
  run(clone, "git", ["commit", "-m", "remote change"]);
  run(clone, "git", ["push"]);
  const result = f.release("-Version", "1.2.2");
  assert.notEqual(result.status, 0);
  assert.match(result.stderr, /Integrate them before releasing/);
  assert.equal(readFileSync(join(f.repo, "package.json"), "utf8"), version);
});

test("invalid Windows versions and mismatched Cargo.lock fail without mutations", (t) => {
  const f = fixture(t);
  for (const version of ["01.2.3", "1.2.65536", "1.2.3-rc.1"])
    assert.notEqual(f.release("-Version", version, "-PlanOnly").status, 0);
  f.write(
    "src-tauri/Cargo.lock",
    '[[package]]\nname = "proxywarden"\nversion = "0.0.0"\n',
  );
  const result = f.release("-PlanOnly");
  assert.notEqual(result.status, 0);
  assert.match(result.stderr, /Version mismatch/);
});

test("unreachable origin reports the Git cause and diagnostic command without a PowerShell stack", (t) => {
  const f = fixture(t);
  f.git("remote", "set-url", "origin", join(f.root, "absent.git"));
  const head = f.git("rev-parse", "HEAD");
  const version = readFileSync(join(f.repo, "package.json"), "utf8");
  const result = f.release("-Version", "1.2.1");
  assert.notEqual(result.status, 0);
  assert.match(result.stderr, /git ls-remote origin/);
  assert.match(result.stderr, /does not appear to be a git repository/);
  assert.doesNotMatch(
    result.stderr,
    /prepare-release\.ps1:\d|ScriptStackTrace|Line \|/,
  );
  assert.equal(f.git("rev-parse", "HEAD"), head);
  assert.equal(readFileSync(join(f.repo, "package.json"), "utf8"), version);
});