/**
 * Static page builder for Tischlerei Staffenberger.
 * Expands <!-- include:partials/x.html --> markers in templates/*.html
 * with the referenced partial's contents and writes the result to the
 * project root (index.html, pictures.html, shop.html, impressum.html).
 *
 * Run: node scripts/build.js
 */

'use strict';

const fs = require('fs');
const path = require('path');

const PROJECT_ROOT = path.join(__dirname, '..');
const TEMPLATES_DIR = path.join(PROJECT_ROOT, 'templates');

const INCLUDE_RE = /[ \t]*<!-- include:([\w./-]+) -->/g;

function expandIncludes(content) {
  return content.replace(INCLUDE_RE, (match, includePath) => {
    const partialPath = path.join(PROJECT_ROOT, includePath);
    return fs.readFileSync(partialPath, 'utf8').replace(/\n$/, '');
  });
}

function main() {
  const pages = fs.readdirSync(TEMPLATES_DIR).filter(f => f.endsWith('.html'));

  for (const page of pages) {
    const templatePath = path.join(TEMPLATES_DIR, page);
    const outputPath = path.join(PROJECT_ROOT, page);
    const content = expandIncludes(fs.readFileSync(templatePath, 'utf8'));
    fs.writeFileSync(outputPath, content);
    console.log(`built ${page}`);
  }
}

main();