import { describe, it, expect } from 'vitest';
import { parseResponse } from '../src/response.js';

describe('parseResponse', () => {
  it('should parse simple key=value pairs', () => {
    const response = 'ret=OK,pow=1,mode=2';
    const result = parseResponse(response);
    expect(result.ret).toBe('OK');
    expect(result.pow).toBe('1');
    expect(result.mode).toBe('2');
  });

  it('should throw error when ret is missing', () => {
    const response = 'pow=1,mode=2';
    expect(() => parseResponse(response)).toThrow("missing 'ret' field in response");
  });

  it('should return empty object when ret is not OK', () => {
    const response = 'ret=NG,error=1';
    const result = parseResponse(response);
    expect(result).toEqual({});
  });

  it('should decode URL-encoded name', () => {
    const response = 'ret=OK,name=%4e%6f%74%74%65';
    const result = parseResponse(response);
    expect(result.name).toBe('Notte');
  });

  it('should handle empty value', () => {
    const response = 'ret=OK,pow=,mode=2';
    const result = parseResponse(response);
    expect(result.pow).toBe('');
    expect(result.mode).toBe('2');
  });

  it('should handle values with equals sign', () => {
    const response = 'ret=OK,data=key=value';
    const result = parseResponse(response);
    expect(result.data).toBe('key=value');
  });

  it('should parse multiple pairs correctly', () => {
    const response = 'ret=OK,htemp=25.0,hhum=-,otemp=21.0,err=0,cmpfreq=40';
    const result = parseResponse(response);
    expect(result.htemp).toBe('25.0');
    expect(result.hhum).toBe('-');
    expect(result.otemp).toBe('21.0');
    expect(result.err).toBe('0');
    expect(result.cmpfreq).toBe('40');
  });
});