// components/main/kabelueberwachung/kue705FO/Charts/LoopMeasurementChart/LoopMeasurementChart.tsx
import React, { useEffect, useRef } from "react";
import { useSelector } from "react-redux";
import { RootState } from "../../../../../../redux/store";
import Chart from "chart.js/auto";
import "chartjs-adapter-moment";
import zoomPlugin from "chartjs-plugin-zoom"; // Zoom-Plugin importieren

Chart.register(zoomPlugin); // Plugin registrieren

const LoopMeasurementChart = () => {
  const chartRef = useRef<HTMLCanvasElement>(null);
  const chartInstance = useRef<Chart | null>(null);

  // Daten & Datum aus Redux abrufen
  const { chartData, vonDatum, bisDatum } = useSelector(
    (state: RootState) => state.kabelueberwachungChart
  );
  const selectedMode = useSelector(
    (state: RootState) => state.kabelueberwachungChart.selectedMode
  );

  useEffect(() => {
    if (chartRef.current) {
      if (chartInstance.current) {
        chartInstance.current.destroy();
      }

      console.log("Chart Data:", chartData);
      console.log("Von Datum:", vonDatum, "Bis Datum:", bisDatum);
      console.log("Selected Mode:", selectedMode);

      // Daten filtern basierend auf vonDatum und bisDatum
      const filteredData = chartData.filter((entry) => {
        const timestampMs = new Date(entry.t).getTime();
        return (
          timestampMs >= new Date(vonDatum).getTime() &&
          timestampMs <= new Date(bisDatum).getTime()
        );
      });

      // Basis-Datasets für i (Minimum) und a (Maximum)
      const datasets = [
        {
          label: "Messwert Minimum (kOhm)",
          data: filteredData.map((entry) => ({
            x: new Date(entry.t).getTime(),
            y: entry.i,
          })),
          borderColor: "rgba(75, 192, 192, 1)", // Türkis
          backgroundColor: "rgba(75, 192, 192, 0.2)",
          fill: false,
        },
        {
          label: "Messwert Maximum (kOhm)",
          data: filteredData.map((entry) => ({
            x: new Date(entry.t).getTime(),
            y: entry.a,
          })),
          borderColor: "rgba(192, 75, 75, 1)", // Rot
          backgroundColor: "rgba(192, 75, 75, 0.2)",
          fill: false,
        },
      ];

      // Falls DIA0: `m` als aktueller Messwert verwenden
      if (
        selectedMode === "DIA0" &&
        filteredData.some((entry) => entry.m !== undefined)
      ) {
        datasets.push({
          label: "Messwert Aktuell (m)",
          data: filteredData.map((entry) => ({
            x: new Date(entry.t).getTime(),
            y: entry.m ?? NaN,
          })),
          borderColor: "rgba(255, 165, 0, 1)", // Orange
          backgroundColor: "rgba(255, 165, 0, 0.2)",
          fill: false,
        });
      }

      // Falls DIA1 oder DIA2: `g` als Durchschnittswert verwenden
      if (
        (selectedMode === "DIA1" || selectedMode === "DIA2") &&
        filteredData.some((entry) => entry.g !== undefined)
      ) {
        datasets.push({
          label: "Messwert Durchschnitt (g)",
          data: filteredData.map((entry) => ({
            x: new Date(entry.t).getTime(),
            y: entry.g ?? NaN,
          })),
          borderColor: "rgba(75, 75, 192, 1)", // Blau
          backgroundColor: "rgba(75, 75, 192, 0.2)",
          fill: false,
        });
      }

      const ctx = chartRef.current.getContext("2d");
      if (ctx) {
        chartInstance.current = new Chart(ctx, {
          type: "line",
          data: { datasets },
          options: {
            responsive: true,
            maintainAspectRatio: false,
            elements: {
              line: { spanGaps: true },
            },
            scales: {
              x: {
                type: "time",
                time: {
                  unit: "day",
                  tooltipFormat: "dd.MM.yyyy",
                  displayFormats: { day: "dd.MM.yyyy" },
                },
                title: { display: true, text: "Zeit (Datum)" },
                min: new Date(vonDatum).getTime(),
                max: new Date(bisDatum).getTime(),
              },
              y: {
                ticks: {
                  callback: (value) => value.toFixed(2) + " kOhm",
                },
              },
            },
            plugins: {
              tooltip: {
                callbacks: {
                  label: (tooltipItem) =>
                    `${tooltipItem.dataset.label}: ${tooltipItem.raw.y.toFixed(
                      2
                    )} kOhm`,
                },
              },
              zoom: {
                pan: { enabled: true, mode: "x" },
                zoom: {
                  wheel: { enabled: true },
                  pinch: { enabled: true },
                  mode: "x",
                },
              },
            },
          },
        });
      }
    }
  }, [chartData, vonDatum, bisDatum, selectedMode]);

  return (
    <div style={{ position: "relative", width: "100%", height: "400px" }}>
      <canvas ref={chartRef} />
    </div>
  );
};

export default LoopMeasurementChart;