// Steady sewer inflow, level-based control, pumps should settle.
//
// Expectation: with a stable inflow of 0.008 m³/s and a pump bank with
// max capacity 0.012 m³/s, the level settles in the RAMP zone (between
// inflowLevel and maxLevel while filling) at roughly the point where demand matches
// inflow. No safety trips should fire.

module.exports = {
  name: 'levelbased-steady',
  description: 'Constant sewer inflow below pump capacity; level converges inside the RAMP zone with demand matching inflow.',
  durationSec: 3600,

  config: {
    general: { name: 'EvalSteady', id: 'eval-steady', unit: 'm3/h',
      logging: { enabled: false, logLevel: 'error' } },
    functionality: { softwareType: 'pumpingStation', role: 'stationcontroller', positionVsParent: 'atEquipment' },
    basin: { volume: 50, height: 5, inflowLevel: 3, outflowLevel: 0.2, overflowLevel: 4.5, inletPipeDiameter: 0.4, outletPipeDiameter: 0.3 },
    hydraulics: { refHeight: 'NAP', basinBottomRef: 0, minHeightBasedOn: 'outlet' },
    control: {
      mode: 'levelbased',
      allowedModes: new Set(['levelbased']),
      levelbased: { minLevel: 1, startLevel: 2, maxLevel: 4, curveType: 'linear', logCurveFactor: 9 },
    },
    safety: {
      enableDryRunProtection: true,
      dryRunThresholdPercent: 2,
      enableHighVolumeSafety: true,
      highVolumeSafetyThresholdPercent: 98,
      timeleftToFullOrEmptyThresholdSeconds: 0,
    },
  },

  setup: async (ps) => {
    // Stub MGC: its pumps collectively deliver (demand/100) × MAX_OUTFLOW.
    const MAX_OUTFLOW = 0.012;  // m³/s
    ps.machineGroups['mgc1'] = {
      config: { general: { name: 'mgc1' } },
      turnOffAllMachines: () => {
        ps.measurements.type('flow').variant('predicted').position('out').child('mgc1').value(0, Date.now(), 'm3/s');
      },
      handleInput: async (_source, demand) => {
        const d = Math.max(0, Math.min(100, Number(demand) || 0));
        const outflow = (d / 100) * MAX_OUTFLOW;
        ps.measurements.type('flow').variant('predicted').position('out').child('mgc1').value(outflow, Date.now(), 'm3/s');
      },
    };
    ps.calibratePredictedLevel(2.0);  // start at the mode start level, below the rising ramp
  },

  inputs: (t, ps) => {
    ps.setManualInflow(0.008, Date.now(), 'm3/s');  // ≈ 29 m³/h
  },

  expectations: [
    { name: 'no safety trips', type: 'safety_trips_eq', value: 0 },
    { name: 'level stays below overflow', type: 'max_level_bounded', value: 4.5 },
    { name: 'level stays above outflow', type: 'min_level_bounded', value: 0.2 },
    { name: 'rising ramp engages after inlet level', type: 'max_demand_gt', value: 0 },
    { name: 'no threshold issues on init', type: 'threshold_issues_eq', value: 0 },
  ],
};