import assert from 'node:assert/strict';
import path from 'node:path';
import test from 'node:test';
import documentLinks, { contentsRoot, documentHref, normalizeBase } from '../plugins/document-links.mjs';

const source = path.join(contentsRoot, '3-protocol.md');
test('published links keep fragments and draft targets stay unpublished', () => {
  assert.equal(documentHref('4.2-text-view.md#参照表記', source), '/book/4.2-text-view/#参照表記');
  assert.equal(documentHref('draft/unresolved-issues.md', source), null);
  assert.equal(documentHref('./draft/unresolved-issues.md?from=book#detail', source, '/wip'), null);
  assert.equal(documentHref('%64raft/unresolved-issues.md', source), null);
  assert.equal(documentHref('../3-protocol.md#value', path.join(contentsRoot, 'draft/rust-api-model.md')), '/book/3-protocol/#value');
});
test('base prefix and query are preserved', () => {
  assert.equal(normalizeBase('/reference'), '/reference/');
  assert.equal(documentHref('4-client.md?from=book#known-space', source, '/reference'), '/reference/book/4-client/?from=book#known-space');
});
test('external URLs, local anchors and non-Markdown assets are untouched', () => {
  for (const url of ['https://example.test/file.md', '//example.test/file.md', '#名前と文字列', 'mailto:user@example.test', './image.svg']) {
    assert.equal(documentHref(url, source), url);
  }
});
test('invalid base and links escaping contents are rejected', () => {
  for (const base of ['relative', '//example.test', '/foo?x', '/../x']) assert.throws(() => normalizeBase(base));
  assert.throws(() => documentHref('../secret.md', source));
});
test('draft links render only their text without changing source code examples', () => {
  const text = { type: 'text', value: '未解決事項' };
  const emphasis = { type: 'emphasis', children: [text] };
  const code = { type: 'code', value: '[example](draft/unresolved-issues.md)' };
  const tree = { type: 'root', children: [
    { type: 'paragraph', children: [
      { type: 'link', url: 'draft/unresolved-issues.md', children: [emphasis] },
      { type: 'linkReference', identifier: 'draft-ref', referenceType: 'full', children: [text] },
    ] },
    { type: 'definition', identifier: 'draft-ref', url: 'draft/unresolved-issues.md#detail' },
    code,
  ] };
  documentLinks()(tree, { path: source });
  assert.deepEqual(tree.children, [{ type: 'paragraph', children: [emphasis, text] }, code]);
});

test('remark handles reference links but leaves code examples unchanged', () => {
  const tree = { type: 'root', children: [
    { type: 'link', url: '4-client.md', children: [] },
    { type: 'definition', url: '4-client.md#known-space' },
    { type: 'code', value: '[example](4-client.md)' },
  ] };
  documentLinks() (tree, { path: source });
  assert.equal(tree.children[0].url, '/book/4-client/');
  assert.equal(tree.children[1].url, '/book/4-client/#known-space');
  assert.equal(tree.children[2].value, '[example](4-client.md)');
});