import { type ParsedNote } from '../services/jsarch.js';

/* Architecture Note #1.2: Ordering

To order architecture notes in a meaningful way we
 use title hierarchy like we used too at school with
 argumentative texts ;).

A sample tree structure could be:
- 1
- 1.1
- 1.2
- 2
- 3

*/
export function compareNotes(
  aNote: Pick<ParsedNote, 'num'>,
  bNote: Pick<ParsedNote, 'num'>,
): number {
  const aNoteLevels = aNote.num.split('.').map((n) => parseInt(n, 10));
  const bNoteLevels = bNote.num.split('.').map((n) => parseInt(n, 10));
  const levelsDepth = Math.max(aNoteLevels.length, bNoteLevels.length);
  let result = 0;

  result = new Array(levelsDepth).fill('').reduce((result, _unused, index) => {
    if (0 !== result) {
      return result;
    } else if ('undefined' === typeof aNoteLevels[index]) {
      result = -1;
    } else if ('undefined' === typeof bNoteLevels[index]) {
      result = 1;
    } else if (aNoteLevels[index] === bNoteLevels[index]) {
      result = 0;
    } else if (aNoteLevels[index] < bNoteLevels[index]) {
      result = -1;
    } else if (aNoteLevels[index] > bNoteLevels[index]) {
      result = 1;
    }
    return result;
  }, result);
  return result;
}