// components/main/system/DetailModal.tsx
"use client";
import React from "react";
import { Line } from "react-chartjs-2";
import { useSelector } from "react-redux";
import { RootState } from "@/redux/store";
import { Listbox } from "@headlessui/react";

type Props = {
  isOpen: boolean;
  selectedKey: string | null;
  onClose: () => void;
  zeitraum: "DIA0" | "DIA1" | "DIA2";
  setZeitraum: (typ: "DIA0" | "DIA1" | "DIA2") => void;
};

type ReduxDataEntry = { t: string; i: number };

export const DetailModal = ({
  isOpen,
  selectedKey,
  onClose,
  zeitraum,
  setZeitraum,
}: Props) => {
  const reduxData: ReduxDataEntry[] = useSelector((state: RootState) => {
    switch (selectedKey) {
      case "+5V":
        return state.systemspannung5Vplus[zeitraum] as ReduxDataEntry[];
      case "+15V":
        return state.systemspannung15Vplus[zeitraum] as ReduxDataEntry[];
      case "-15V":
        return state.systemspannung15Vminus[zeitraum] as ReduxDataEntry[];
      case "-98V":
        return state.systemspannung98Vminus[zeitraum] as ReduxDataEntry[];
      case "ADC Temp":
        return state.temperaturAdWandler[zeitraum] as ReduxDataEntry[];
      case "CPU Temp":
        return state.temperaturProzessor[zeitraum] as ReduxDataEntry[];
      default:
        return [] as ReduxDataEntry[];
    }
  });

  const labels = reduxData.map((e: ReduxDataEntry) => e.t);
  const values = reduxData.map((e: ReduxDataEntry) => e.i);

  const baseOptions = {
    responsive: true,
    maintainAspectRatio: false,
    scales: {
      y: {
        beginAtZero: false,
        grid: { color: "rgba(200,200,200,0.2)" },
        title: { display: true, text: "Wert" },
      },
      x: {
        grid: { color: "rgba(200,200,200,0.2)" },
        title: { display: true, text: "Zeit" },
      },
    },
    plugins: {
      legend: { position: "bottom" as const },
      title: { display: true, text: `Verlauf – ${selectedKey}` },
    },
  };

  if (!isOpen || !selectedKey) return null;

  return (
    <div className="fixed inset-0 bg-black bg-opacity-40 flex items-center justify-center z-50">
      <div className="bg-white p-6 rounded-xl w-[50%]  h-[60%] overflow-auto shadow-2xl">
        <div className="flex justify-between items-center mb-4">
          <h2 className="text-xl font-semibold">
            Detailansicht: {selectedKey}
          </h2>
          <button onClick={onClose} className="text-red-500 hover:text-red-700">
            ✕
          </button>
        </div>

        <div className="flex items-center space-x-2 mb-4">
          <label className="font-medium">Zeitraum:</label>
          <Listbox value={zeitraum} onChange={setZeitraum}>
            <div className="relative w-48">
              <Listbox.Button className="w-full border px-3 py-1 rounded text-left bg-white flex justify-between items-center text-sm">
                <span>
                  {
                    {
                      DIA0: "Alle Messwerte",
                      DIA1: "Stündlich",
                      DIA2: "Täglich",
                    }[zeitraum]
                  }
                </span>
                <svg
                  className="w-5 h-5 text-gray-400"
                  viewBox="0 0 20 20"
                  fill="currentColor"
                >
                  <path
                    fillRule="evenodd"
                    d="M5.23 7.21a.75.75 0 011.06.02L10 10.585l3.71-3.355a.75.75 0 111.02 1.1l-4.25 3.85a.75.75 0 01-1.02 0l-4.25-3.85a.75.75 0 01.02-1.06z"
                    clipRule="evenodd"
                  />
                </svg>
              </Listbox.Button>
              <Listbox.Options className="absolute z-50 mt-1 w-full border rounded bg-white shadow max-h-60 overflow-auto text-sm">
                {["DIA0", "DIA1", "DIA2"].map((option) => (
                  <Listbox.Option
                    key={option}
                    value={option}
                    className={({ selected, active }) =>
                      `px-4 py-1 cursor-pointer ${
                        selected
                          ? "bg-littwin-blue text-white"
                          : active
                          ? "bg-gray-200"
                          : ""
                      }`
                    }
                  >
                    {
                      {
                        DIA0: "Alle Messwerte",
                        DIA1: "Stündlich",
                        DIA2: "Täglich",
                      }[option]
                    }
                  </Listbox.Option>
                ))}
              </Listbox.Options>
            </div>
          </Listbox>
        </div>

        <div className="h-[85%]">
          <Line
            data={{
              labels,
              datasets: [
                {
                  label: selectedKey,
                  data: values,
                  borderColor: "rgba(59,130,246,1)",
                  backgroundColor: "rgba(59,130,246,0.2)",
                  fill: false,
                },
              ],
            }}
            options={baseOptions}
          />
        </div>
      </div>
    </div>
  );
};