import test from 'node:test';
import assert from 'node:assert/strict';
import { readFile, access } from 'node:fs/promises';
import { ART_DIRECTIONS, directionTheme } from '../src/art-directions.js';
import { THEME } from '../src/design-tokens.js';
import { recordDesign } from '../design/examples/render-design.mjs';

const root = new URL('../', import.meta.url);
const read = path => readFile(new URL(path, root), 'utf8');
const manifest = JSON.parse(await read('design/manifest.json'));

test('an agent can discover all authored specs, resolved tokens, previews and implementation sources', async () => {
  assert.equal(manifest.schemaVersion, 1);
  assert.equal(manifest.pathBase, 'repository-root');
  assert.deepEqual(manifest.designs.map(d => d.id), ART_DIRECTIONS.map(d => d.id));
  assert.equal(manifest.defaultDesignId, 'calm');
  for (const path of [manifest.entry, manifest.agentGuide, manifest.sharedRules, manifest.catalog, manifest.example, ...Object.values(manifest.sources)]) {
    await access(new URL(path, root));
  }
  for (const entry of manifest.designs) {
    const spec = await read(entry.designDoc);
    assert.match(spec, new RegExp('设计 ID：`' + entry.id + '`'));
    assert.ok(spec.includes('../../shared.md'));
    assert.ok(spec.includes('tokens.json'));
    assert.ok(spec.includes('## 验收与接入'));
    const html = await read(entry.preview);
    assert.ok(html.includes(`data-design="${entry.id}"`));
    assert.ok(html.includes('href="design.md"'));
    assert.ok(html.includes('href="tokens.json"'));
    assert.ok((await read(entry.legacyPreview)).includes(`url=${entry.id}/index.html`));
    assert.ok((await read(`design/directions/${entry.id}.md`)).includes(`${entry.id}/design.md`));
  }
});

test('generated design data stays aligned with runtime palettes at every supported color count', async () => {
  for (const entry of manifest.designs) {
    const direction = ART_DIRECTIONS.find(d => d.id === entry.id);
    const data = JSON.parse(await read(entry.tokens));
    assert.equal(data.designId, entry.id);
    assert.equal(data.artStyle, direction.style);
    assert.deepEqual(data.pigments.map(({ index, ...pigment }) => pigment), direction.pigments);
    assert.deepEqual(data.themes.map(t => t.id), manifest.themeIds);
    for (const theme of data.themes) {
      const source = direction.themes.find(t => t.id === theme.id);
      assert.equal(theme.background, source.background);
      assert.equal(theme.ink, source.ink);
      for (const [key, value] of Object.entries(theme.materials)) assert.equal(value, source.materials?.[key] ?? THEME[key]);
      for (const count of manifest.paletteCounts) assert.deepEqual(theme.palettes[count], directionTheme(direction, theme.id, count).palette);
    }
  }
});

test('canonical design documents and previews have no broken local links after the directory move', async () => {
  const paths = ['design/README.md', 'design/AGENTS.md', 'design/shared.md', 'design/index.html', ...manifest.designs.flatMap(d => [d.designDoc, d.preview, d.legacyPreview])];
  for (const path of paths) {
    const source = (await read(path)).replace(/```[\s\S]*?```/g, '');
    const links = path.endsWith('.md') ? [...source.matchAll(/\[[^\]]+\]\(([^)]+)\)/g)] : [...source.matchAll(/(?:href|src)="([^"]+)"/g)];
    for (const [, href] of links) {
      if (/^(?:https?:|data:|#)/.test(href)) continue;
      const target = new URL(href, new URL(path, root));
      target.search = ''; target.hash = '';
      await assert.doesNotReject(access(target), `${path} → ${href}`);
    }
  }
});

test('the documented integration example renders all design and theme combinations and rejects typos', () => {
  for (const direction of ART_DIRECTIONS) {
    for (const theme of direction.themes) {
      const result = recordDesign(direction.id, theme.id, 7);
      assert.equal(result.designId, direction.id);
      assert.equal(result.background, theme.background);
      assert.ok(result.commands.some(command => command.type === 'line'));
      assert.ok(result.commands.some(command => command.type === 'polygon'));
      for (const command of result.commands) {
        if (command.points) assert.ok(command.points.every(point => Number.isFinite(point.x) && Number.isFinite(point.y)));
        if (command.width !== undefined) assert.ok(command.width > 0);
      }
    }
  }
  assert.throws(() => recordDesign('paepr'), /Unknown design/);
  assert.throws(() => recordDesign('paper', 'night'), /Unknown theme/);
  assert.throws(() => recordDesign('paper', 'lagoon', 5), /Unsupported color count/);
});