import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import path from "node:path";
import { fileURLToPath } from "node:url";
import test from "node:test";

const repoRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..", "..");

function readWorkflow(name) {
  return readFileSync(path.join(repoRoot, ".github/workflows", name), "utf8");
}

function readPrManifestPattern() {
  const prWorkflow = readWorkflow("pr.yml");
  const manifestPattern = prWorkflow.match(/^\s*manifest_pattern='([^']+)'$/m)?.[1];

  assert.ok(manifestPattern, "expected a manifest_pattern definition in pr.yml");
  return new RegExp(manifestPattern);
}

test("release workflow delegates stable and canary verification to the reusable workflow", () => {
  const releaseWorkflow = readWorkflow("release.yml");

  assert.match(
    releaseWorkflow,
    /verify_canary:\n\s+if: github\.event_name == 'push'\n\s+uses: \.\/\.github\/workflows\/release-verify\.yml\n\s+with:\n\s+ref: \$\{\{ github\.sha \}\}/,
  );
  assert.match(
    releaseWorkflow,
    /verify_stable:\n\s+if: github\.event_name == 'workflow_dispatch'\n\s+uses: \.\/\.github\/workflows\/release-verify\.yml\n\s+with:\n\s+ref: \$\{\{ inputs\.source_ref \}\}/,
  );
  assert.doesNotMatch(releaseWorkflow, /verify_(?:canary|stable):[\s\S]*?pnpm test:run(?:\n|$)/);
});

test("release verify workflow covers the same split test surface as stable PR verification", () => {
  const verifyWorkflow = readWorkflow("release-verify.yml");

  assert.match(verifyWorkflow, /workflow_call:/);
  assert.match(verifyWorkflow, /node \.\/scripts\/release-package-map\.mjs check/);
  assert.match(verifyWorkflow, /pnpm -r typecheck/);
  assert.match(verifyWorkflow, /pnpm build/);

  for (const group of ["general-server", "general-workspaces-a", "general-workspaces-b"]) {
    assert.match(verifyWorkflow, new RegExp(`group: ${group}`));
  }

  for (const shardIndex of [0, 1, 2]) {
    assert.match(
      verifyWorkflow,
      new RegExp(`group: general-server[\\s\\S]*?shard_index: ${shardIndex}[\\s\\S]*?shard_count: 3`),
    );
  }

  for (const shardIndex of [0, 1, 2, 3]) {
    assert.match(verifyWorkflow, new RegExp(`shard_index: ${shardIndex}[\\s\\S]*?shard_count: 4`));
  }

  assert.match(verifyWorkflow, /pnpm test:run:general -- --group/);
  assert.match(verifyWorkflow, /pnpm test:run:serialized -- --shard-index/);
});

test("pr workflow regenerates the lockfile for dependency graph inputs", () => {
  const manifestPattern = readPrManifestPattern();

  const triggeringPaths = [
    "package.json",
    "packages/shared/package.json",
    "pnpm-workspace.yaml",
    ".npmrc",
    "pnpmfile.cjs",
    "pnpmfile.js",
    "pnpmfile.mjs",
    "patches/acpx@0.12.0.patch",
    "patches/nested/fix.patch",
  ];

  for (const filePath of triggeringPaths) {
    assert.equal(
      manifestPattern.test(filePath),
      true,
      `${filePath} should trigger lockfile regeneration`,
    );
  }
});

test("pr workflow lockfile trigger stays scoped to root-level config and patches", () => {
  const manifestPattern = readPrManifestPattern();

  const ignoredPaths = [
    "README.md",
    "packages/shared/src/index.ts",
    "packages/shared/.npmrc",
    "packages/shared/pnpmfile.cjs",
    "packages/shared/patches/acpx.patch",
    "docs/patches/acpx.patch",
  ];

  for (const filePath of ignoredPaths) {
    assert.equal(
      manifestPattern.test(filePath),
      false,
      `${filePath} should not trigger lockfile regeneration`,
    );
  }
});