import { describe, expect, it } from 'vitest';
import { parseSnbt, SnbtError } from '../src/parsers/snbt.ts';

describe('parseSnbt', () => {
  it('parses newline-separated compound', () => {
    expect(parseSnbt('{\n\tversion: 1\n\tlock: false\n\tname: "CDOGamer#308a693c"\n}')).toEqual({
      version: 1,
      lock: false,
      name: 'CDOGamer#308a693c',
    });
  });

  it('parses comma-separated compound', () => {
    expect(parseSnbt('{a: 1, b: "x", c: {d: 2b}}')).toEqual({ a: 1, b: 'x', c: { d: 2 } });
  });

  it('parses suffixes 1L 2b 1.5f 0.0d -3s', () => {
    expect(parseSnbt('[1L, 2b, 1.5f, 0.0d, -3s, 1791559740996L]')).toEqual([1, 2, 1.5, 0, -3, 1791559740996]);
  });

  it('parses keys that start with digits and quoted keys with colons', () => {
    expect(
      parseSnbt('{ 0000000000000001: 5L\n 308a693c2bd84d6b: { x: 1 }\n "a:B": 2L\n quest.ABC.title: "t" }'),
    ).toEqual({ '0000000000000001': 5, '308a693c2bd84d6b': { x: 1 }, 'a:B': 2, 'quest.ABC.title': 't' });
  });

  it('parses typed arrays and empty containers', () => {
    expect(parseSnbt('{a: [I; 1, 2], b: [L; 3L], c: [B; 1b], d: [], e: { }}')).toEqual({
      a: [1, 2],
      b: [3],
      c: [1],
      d: [],
      e: {},
    });
  });

  it('parses string escapes and single quotes', () => {
    expect(parseSnbt(`["a\\"b", 'c\\'d', "\\\\"]`)).toEqual(['a"b', "c'd", '\\']);
  });

  it('keeps unquoted non-numeric words as strings', () => {
    expect(parseSnbt('{type: item, id: 3BC0A50886A3222B}')).toEqual({ type: 'item', id: '3BC0A50886A3222B' });
  });

  it('reports line on error', () => {
    try {
      parseSnbt('{\n a: 1\n b: {\n}');
      expect.unreachable();
    } catch (e) {
      expect(e).toBeInstanceOf(SnbtError);
      expect((e as SnbtError).line).toBe(4);
    }
  });
});