// generate-structure.js
// Generates bible-structure.js from nlt-data.js

import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';
import { nltData } from './nlt-data.js';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

function getSortedNumericKeys(object) {
  return Object.keys(object)
    .map((key) => Number(key))
    .sort((a, b) => a - b);
}

function generateStructureFromNlt() {
  const structure = {};
  for (const book of Object.keys(nltData)) {
    const chapters = nltData[book];
    const chapterNumbers = getSortedNumericKeys(chapters);
    const verseCounts = chapterNumbers.map((chapterNumber) => {
      const versesObject = chapters[String(chapterNumber)];
      const verseNumbers = getSortedNumericKeys(versesObject);
      return verseNumbers.length;
    });
    structure[book] = verseCounts;
  }
  return structure;
}

function renderFile(structure) {
  const chapterCounts = Object.fromEntries(
    Object.entries(structure).map(([book, chapters]) => [book, chapters.length])
  );

  const banner = `// bible-structure.js\n// Auto-generated from nlt-data.js — do not edit manually\n\n`;
  const exports = `export const bibleStructure = ${JSON.stringify(structure, null, 2)};\n\nexport const chapterCounts = Object.fromEntries(\n  Object.entries(bibleStructure).map(([book, chapters]) => [book, chapters.length])\n);\n`;
  return banner + exports;
}

function main() {
  const structure = generateStructureFromNlt();
  const outPath = path.join(__dirname, 'bible-structure.js');
  fs.writeFileSync(outPath, renderFile(structure), 'utf-8');
  console.log(`Wrote ${outPath}`);
}

main();