"use client"; // /components/main/digitalOutputs/DigitalOutputsModal.tsx
import React, { useState, useEffect } from "react";
import { useSelector } from "react-redux";
import { RootState } from "@/redux/store";
import type { DigitalOutput } from "@/types/digitalOutput";

export default function DigitalOutputsModal({
  selectedOutput,
  closeOutputModal,
  isOpen,
}: {
  selectedOutput: DigitalOutput | null;
  closeOutputModal: () => void;
  isOpen: boolean;
}) {
  const allOutputs = useSelector(
    (state: RootState) => state.digitalOutputsSlice.outputs
  );

  const [label, setLabel] = useState("");
  const [status, setStatus] = useState(false);

  const [isSaving, setIsSaving] = useState(false);
  const [errorMsg, setErrorMsg] = useState("");

  // ✅ Zustand neu setzen, wenn Modal geöffnet oder anderer Ausgang ausgewählt wird
  useEffect(() => {
    if (isOpen && selectedOutput) {
      setLabel(selectedOutput.label || "");
      setStatus(selectedOutput.status || false);

      setErrorMsg("");
    }
  }, [isOpen, selectedOutput]);

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

  const handleSave = async () => {
    setIsSaving(true);
    setErrorMsg("");

    const updatedOutputs = allOutputs.map((output) =>
      output.id === selectedOutput.id
        ? { ...output, label: label.trim(), status }
        : output
    );

    const isCPL = process.env.NEXT_PUBLIC_NODE_ENV === "production";

    try {
      if (isCPL) {
        const nameEncoded = encodeURIComponent(label.trim());
        const nameUrl = `/CPL?digitalOutputs.html&DAN0${selectedOutput.id}=${nameEncoded}`;
        const statusUrl = `/CPL?digitalOutputs.html&DAS0${selectedOutput.id}=${
          status ? 1 : 0
        }`;

        try {
          await fetch(nameUrl, { method: "GET" });
          await new Promise((res) => setTimeout(res, 300));
          await fetch(statusUrl, { method: "GET" });

          closeOutputModal(); // Seite bleibt erhalten
        } catch (err) {
          console.error("❌ Fehler bei fetch:", err);
          setErrorMsg("❌ Fehler beim Speichern.");
        }
      } else {
        // 🧪 Lokaler Entwicklungsmodus
        const res = await fetch("/api/cpl/updateDigitalOutputsHandler", {
          method: "POST",
          headers: { "Content-Type": "application/json" },
          body: JSON.stringify({ outputs: updatedOutputs }),
        });

        if (!res.ok) {
          const err = await res.json();
          setErrorMsg(err?.error || "Fehler beim Speichern.");
        } else {
          console.log(
            "✅ Status & Label gespeichert für Ausgang",
            selectedOutput.id
          );
          closeOutputModal();
        }
      }
    } catch (err) {
      console.error("Fehler beim Speichern:", err);
      setErrorMsg("❌ Fehler beim Speichern.");
    } finally {
      setIsSaving(false);
    }
  };

  return (
    <div className="fixed top-0 left-0 w-full h-full bg-black bg-opacity-50 flex justify-center items-center z-50">
      <div className="bg-[var(--color-surface)] border border-base rounded-xl shadow-xl w-[32rem] max-w-full p-0 flex flex-col">
        <header className="modal-header flex items-center justify-between px-6 py-4 border-b border-base">
          <h2 className="text-base font-bold text-fg">
            Einstellungen Schaltausgang {selectedOutput.id}
          </h2>
          <button
            onClick={closeOutputModal}
            className="icon-btn text-2xl"
            aria-label="Modal schließen"
            type="button"
          >
            <i className="bi bi-x-circle-fill" />
          </button>
        </header>
        <div className="modal-body-scroll px-6 py-5 flex-1 text-fg">
          <div className="grid grid-cols-2 gap-x-4 gap-y-3">
            <div>
              <span className="font-normal text-fg-secondary">
                Bezeichnung:
              </span>
            </div>
            <div>
              <input
                type="text"
                value={label}
                onChange={(e) => setLabel(e.target.value)}
                className="border border-base rounded px-2 py-1 w-full bg-[var(--color-surface-alt)] text-fg"
                placeholder="z. B. Licht Relais 1"
              />
            </div>
          </div>
          {errorMsg && <p className="text-red-600 text-sm mb-2">{errorMsg}</p>}
        </div>
        <footer className="px-6 py-4 border-t border-base flex justify-end">
          <button
            onClick={handleSave}
            disabled={isSaving}
            className="btn-primary px-4 py-2 rounded flex items-center"
          >
            {isSaving ? "Speichern..." : "Speichern"}
          </button>
        </footer>
      </div>
    </div>
  );
}