import {readdirSync, readFileSync, writeFileSync, mkdirSync, copyFileSync, renameSync, rmSync} from 'node:fs';
import {join} from 'node:path';
import {execFileSync} from 'node:child_process';
const cli = 'vendor/archify/bin/archify.mjs';
const types = new Set(['architecture','workflow','sequence','dataflow','lifecycle']);
const inlineStyles = readFileSync(new URL('./inline-viewer.css', import.meta.url), 'utf8');
const themeBridge = readFileSync(new URL('./viewer-theme-bridge.js', import.meta.url), 'utf8');
// This directory is generated-only and ignored by Git. Remove stale artifacts.
rmSync('static/diagrams', {recursive: true, force: true});
mkdirSync('static/diagrams', {recursive: true});
mkdirSync('.cache/archify', {recursive: true});
const names = new Set();
for (const file of readdirSync('diagrams').sort()) {
  const match = /^([a-z0-9]+(?:-[a-z0-9]+)*)\.([a-z]+)\.json$/.exec(file);
  if (!match || !types.has(match[2])) throw new Error(`Unsupported diagram source: ${file}`);
  const [,name,type] = match;
  if (names.has(name)) throw new Error(`Duplicate diagram output: ${name}`);
  names.add(name);
  const input = join('diagrams',file);
  const spec = JSON.parse(readFileSync(input,'utf8'));
  const output = `static/diagrams/${name}/index.html`;
  mkdirSync(`static/diagrams/${name}`, {recursive: true});
  if (spec.diagram_type !== type || spec.meta.output !== output) throw new Error(`Diagram type/output mismatch: ${file}`);
  const run = args => execFileSync(process.execPath,[cli,...args],{stdio:'inherit',env:{...process.env,ARCHIFY_UPDATE_CHECK_DISABLED:'1'}});
  run(['validate',type,input,'--quality','showcase','--json']);
  run(['deliver',type,input,output,'--quality','showcase','--json']);
  run(['check',output,'--json','--require-provenance']);
  // Verify the upstream artifact first, then add the scoped portal integration.
  let viewer = readFileSync(output, 'utf8');
  // Upstream intentionally disables preset selection in gallery embeds. Enable
  // only those two guards; fail closed if a future vendor update changes them.
  const start = viewer.indexOf('Archify.preset = (function () {');
  const end = viewer.indexOf('Archify.theme = (function () {', start);
  const preset = viewer.slice(start, end);
  const guard = "if (html.getAttribute('data-embed') === 'true') return false;";
  if (start < 0 || end < start || preset.split(guard).length !== 3) throw new Error('Archify preset integration drift');
  viewer = viewer.slice(0, start) + preset.replaceAll(guard, '') + viewer.slice(end);
  if (!viewer.includes('</head>') || !viewer.includes('</body>')) throw new Error(`Invalid viewer: ${output}`);
  writeFileSync(output, viewer.replace('</head>', `<style id="eldorado-inline-controls">${inlineStyles}</style></head>`)
    .replace('</body>', `<script>${themeBridge}</script></body>`));
  renameSync(`static/diagrams/${name}/index.delivery.json`, `.cache/archify/${name}.delivery.json`);
}
copyFileSync('vendor/archify/LICENSE','static/diagrams/ARCHIFY-LICENSE.txt');
copyFileSync('vendor/archify/THIRD_PARTY_NOTICES.md','static/diagrams/THIRD-PARTY-NOTICES.md');