const OutputUtils = require('../src/helper/outputUtils');

describe('OutputUtils', () => {
  let outputUtils;
  let config;

  beforeEach(() => {
    outputUtils = new OutputUtils();
    config = {
      general: {
        name: 'Pump-1',
        id: 'node-1',
        unit: 'm3/h',
      },
      functionality: {
        softwareType: 'pump',
        role: 'test-role',
      },
      asset: {
        supplier: 'EVOLV',
        type: 'sensor',
      },
      output: {
        process: 'process',
        dbase: 'influxdb',
      },
    };
  });

  it('keeps legacy process output by default', () => {
    const msg = outputUtils.formatMsg({ flow: 12.5 }, config, 'process');
    expect(msg).toEqual({
      topic: 'Pump-1',
      payload: { flow: 12.5 },
    });
  });

  it('keeps legacy influxdb output by default', () => {
    const msg = outputUtils.formatMsg({ flow: 12.5 }, config, 'influxdb');
    expect(msg.topic).toBe('Pump-1');
    expect(msg.payload).toEqual(expect.objectContaining({
      measurement: 'Pump-1',
      fields: { flow: 12.5 },
      tags: expect.objectContaining({
        id: 'node-1',
        name: 'Pump-1',
        softwareType: 'pump',
      }),
    }));
  });

  it('supports config-driven json formatting on the process channel', () => {
    config.output.process = 'json';
    const msg = outputUtils.formatMsg({ flow: 12.5 }, config, 'process');
    expect(msg.topic).toBe('Pump-1');
    expect(typeof msg.payload).toBe('string');
    expect(msg.payload).toContain('"measurement":"Pump-1"');
    expect(msg.payload).toContain('"flow":12.5');
  });

  it('supports config-driven csv formatting on the database channel', () => {
    config.output.dbase = 'csv';
    const msg = outputUtils.formatMsg({ flow: 12.5 }, config, 'influxdb');
    expect(msg.topic).toBe('Pump-1');
    expect(typeof msg.payload).toBe('string');
    expect(msg.payload).toContain('Pump-1');
    expect(msg.payload).toContain('flow=12.5');
  });
});