PRTG formatted JSON endpoint for "HTTP Data Advanced" sensor straight from Shelly

prtg.js

// Shelly: Scripts - create prtg.js with contents below - Start - Scripts main page: "Run on start"
// Call with (assuming the first script): http://{shellyip}/script/1/prtg
// PRTG: Import HTTP Data Advanced sensor.

HTTPServer.registerEndpoint('prtg', function (request, response) {
  response.headers = [
    ['content-type', 'application/json']
  ]
  
  const em = Shelly.getComponentStatus('em', 0)
  const emdata = Shelly.getComponentStatus('emdata', 0)

  response.body = JSON.stringify({
    prtg: {
      result: [
        {
          Channel: "Total Consumption",
          Value: Math.round(emdata.total_act * 1000) / 1000 / 1000,
          CustomUnit: "kWh",
          Float: 1,
          DecimalMode: 3
        },
        {
          Channel: "Current",
          Value: em.total_current,
          CustomUnit: "A",
          Float: 1,
          DecimalMode: 3,
          LimitMode: 1,
          LimitMaxError: 20,
          LimitMaxWarning: 10,
          LimitMinWarning: 0.5,
          LimitMinError: 0.1,
        },
        {
          Channel: "Actual Power",
          Value: em.total_act_power,
          CustomUnit: "VA",
          Float: 1,
          DecimalMode: 3,
          LimitMode: 1,
          LimitMaxError: 10000,
          LimitMaxWarning: 8000,
          LimitMinWarning: 50,
          LimitMinError: 10,
        },
        {
          Channel: "Apparent Power",
          Value: em.total_aprt_power,
          CustomUnit: "W",
          Float: 1,
          DecimalMode: 3,
          LimitMode: 1,
          LimitMaxError: 10000,
          LimitMaxWarning: 8000,
          LimitMinWarning: 50,
          LimitMinError: 10,
        },
        {
          Channel: "Power Factor %",
          Value: Math.round(em.total_act_power / em.total_aprt_power * 100) / 100,
          CustomUnit: "λ",
          LimitMode: 1,
          DecimalMode: 2,
          LimitMinWarning: 0.6,
          LimitMinError: 0.5,
        }
      ]
    }
  })
  response.code = 200
  response.send()
})