import assert from "node:assert/strict";
import { readdir, readFile } from "node:fs/promises";
import { extname, join } from "node:path";
import { test } from "node:test";

const sourceRoot = new URL("../src/", import.meta.url);

async function sourceFiles(relativeDirectory) {
  const directory = new URL(`${relativeDirectory}/`, sourceRoot);
  const entries = await readdir(directory, {
    recursive: true,
    withFileTypes: true,
  });
  return entries
    .filter((entry) => entry.isFile() && [".ts", ".tsx"].includes(extname(entry.name)))
    .map((entry) => join(entry.parentPath, entry.name));
}

async function read(relativePath) {
  return readFile(new URL(relativePath, sourceRoot), "utf8");
}

test("dependency direction keeps core and reusable components below workspaces", async () => {
  const coreFiles = await sourceFiles("core");
  const componentFiles = await sourceFiles("components");

  for (const file of coreFiles) {
    const source = await readFile(file, "utf8");
    assert.doesNotMatch(
      source,
      /from\s+["'][^"']*(?:workspaces|\/App)["']/,
      `${file} imports an application composition layer`,
    );
    assert.doesNotMatch(
      source,
      /@nodedc\/ui-(?:react|dom)/,
      `${file} imports a visual adapter from the domain layer`,
    );
  }

  for (const file of componentFiles) {
    const source = await readFile(file, "utf8");
    assert.doesNotMatch(
      source,
      /from\s+["'][^"']*(?:workspaces|\/App)["']/,
      `${file} imports a workspace composition layer`,
    );
  }
});

test("shared visual primitives come only from the Design Guideline packages", async () => {
  const packageJson = JSON.parse(
    await readFile(new URL("../package.json", import.meta.url), "utf8"),
  );
  for (const packageName of [
    "@nodedc/tokens",
    "@nodedc/ui-core",
    "@nodedc/ui-react",
  ]) {
    assert.equal(typeof packageJson.dependencies[packageName], "string");
  }

  const files = await sourceFiles(".");
  for (const file of files) {
    const source = await readFile(file, "utf8");
    assert.doesNotMatch(source, /lucide-react/);
    assert.doesNotMatch(source, /NODEDC_DESIGN_GUIDELINE\/(?:apps|src)\//);
  }
});

test("laboratory UI is a bounded feature slice, not a central workspace branch", async () => {
  const workspaceHub = await read("workspaces/Workspaces.tsx");
  const laboratory = await read(
    "workspaces/laboratory/LaboratoryArchiveWorkspace.tsx",
  );
  const workspaceCss = await read("styles/workspaces.css");
  const laboratoryCss = await read("styles/laboratory.css");
  const laboratoryReportingCss = await read("styles/laboratory-reporting.css");
  const e30Review = await read("workspaces/E30ReviewWorkspace.tsx");
  const e30HumanReview = await read(
    "workspaces/E30HumanReviewPanel.tsx",
  );
  const e30HumanReviewCss = await read("styles/e30-human-review.css");

  assert.doesNotMatch(
    workspaceHub,
    /fetchE(?:29|30)|LaboratoryWorkTemplate|function\s+E(?:29|30)LaboratoryResult/,
  );
  assert.match(
    workspaceHub,
    /<LaboratoryArchiveWorkspace[\s\S]*SpatialView=\{SpatialWorkspace\}/,
  );
  assert.match(laboratory, /export function LaboratoryArchiveWorkspace/);
  assert.match(laboratory, /type LaboratoryWorkspaceProps = WorkspaceRendererProps/);
  assert.doesNotMatch(workspaceCss, /\.(?:lab-|laboratory-|e30-)/);
  assert.match(laboratoryCss, /\.laboratory-work-template/);
  assert.match(laboratoryCss, /\.e30-review-workspace/);
  assert.match(laboratoryReportingCss, /\.laboratory-summary__brief/);
  assert.match(laboratoryReportingCss, /\.laboratory-result-conclusion/);
  assert.doesNotMatch(laboratory, /E30HumanReviewPanel/);
  assert.match(e30Review, /<E30HumanReviewPanel/);
  assert.doesNotMatch(e30Review, /E30EngineeringAuditPanel/);
  assert.match(e30HumanReview, /from "@nodedc\/ui-react"/);
  assert.doesNotMatch(laboratoryCss, /\.e30-human-review/);
  assert.match(e30HumanReviewCss, /\.e30-human-review/);
});

test("central composition files cannot silently become monoliths again", async () => {
  const ratchets = [
    ["App.tsx", 1_250],
    ["workspaces/Workspaces.tsx", 1_200],
    ["workspaces/laboratory/LaboratoryArchiveWorkspace.tsx", 1_000],
    ["styles/workspaces.css", 4_350],
    ["styles/laboratory.css", 900],
    ["styles/laboratory-reporting.css", 100],
  ];

  for (const [relativePath, maximumLines] of ratchets) {
    const lineCount = (await read(relativePath)).split("\n").length;
    assert.ok(
      lineCount <= maximumLines,
      `${relativePath} has ${lineCount} lines; split the feature instead of raising ${maximumLines}`,
    );
  }
});