import { CLINICAL_THRESHOLDS } from '/pkCore.js';
import { t } from './i18n.js';

export function updateChartAnnotations(chart, mode, currentYMax) {
  const thresholds = CLINICAL_THRESHOLDS[mode];
  const annotations = {};

  thresholds.zones.forEach((zone, index) => {
    if (zone.min < currentYMax) {
      const zoneMax = zone.max === Infinity ? currentYMax : zone.max;

      annotations[`zone_${index}`] = {
        type: 'box',
        yMin: zone.min,
        yMax: Math.min(zoneMax, currentYMax),
        backgroundColor: zone.color,
        borderWidth: 0,
        label: {
          display: true,
          content: t(`zones.${zone.zoneKey}`),
          color: zone.textHex,
          font: { size: 11, weight: 'bold' },
          position: 'center'
        }
      };
    }
  });

  chart.options.plugins.annotation.annotations = annotations;
}

export function adjustChartYScale(chart, mode, datasets) {
  const defaultMax = CLINICAL_THRESHOLDS[mode].maxScale;
  let highestValue = 0;

  datasets.forEach(ds => {
    ds.data.forEach(val => {
      if (val > highestValue) highestValue = val;
    });
  });

  let targetYMax = defaultMax;
  if (highestValue > defaultMax) {
    targetYMax = Math.ceil(highestValue * 1.1);
  }

  chart.options.scales.y.max = targetYMax;
  updateChartAnnotations(chart, mode, targetYMax);
}