"use client";

import { useActionState } from "react";
import { createCalendarEventAction } from "@/lib/actions/calendars";

export function NewCalendarEventForm({ editableCalendars }: { editableCalendars: { id: string; name: string }[] }) {
  const [state, formAction, pending] = useActionState(createCalendarEventAction, {});

  if (editableCalendars.length === 0) return null;

  return (
    <form action={formAction} className="bg-[var(--rk-surface)] border border-white/10 rounded-2xl p-5 flex flex-col gap-3 mb-10">
      <p className="text-xs uppercase tracking-[0.1em] text-[var(--rk-ink-muted)]">Neuer Termin</p>
      <div className="grid grid-cols-1 sm:grid-cols-2 gap-3">
        <select
          name="calendarId"
          required
          className="bg-[var(--rk-bg)] border border-white/15 rounded-lg px-3 py-2 text-sm focus:outline-none focus:border-white/50"
        >
          {editableCalendars.map((c) => (
            <option key={c.id} value={c.id}>
              {c.name}
            </option>
          ))}
        </select>
        <input
          name="title"
          placeholder="Titel"
          required
          className="bg-transparent border border-white/15 rounded-lg px-3 py-2 text-sm focus:outline-none focus:border-white/50"
        />
      </div>
      <div className="grid grid-cols-1 sm:grid-cols-2 gap-3">
        <label className="flex flex-col gap-1 text-xs text-[var(--rk-ink-muted)]">
          Start
          <input
            name="start"
            type="datetime-local"
            required
            className="bg-transparent border border-white/15 rounded-lg px-3 py-2 text-sm text-[var(--rk-ink)] focus:outline-none focus:border-white/50"
          />
        </label>
        <label className="flex flex-col gap-1 text-xs text-[var(--rk-ink-muted)]">
          Ende (optional)
          <input
            name="end"
            type="datetime-local"
            className="bg-transparent border border-white/15 rounded-lg px-3 py-2 text-sm text-[var(--rk-ink)] focus:outline-none focus:border-white/50"
          />
        </label>
      </div>
      <input
        name="description"
        placeholder="Beschreibung (optional)"
        className="bg-transparent border border-white/15 rounded-lg px-3 py-2 text-sm focus:outline-none focus:border-white/50"
      />
      <label className="flex items-center gap-2 text-sm">
        <input type="checkbox" name="allDay" className="h-3.5 w-3.5" />
        Ganztägig
      </label>
      <button
        type="submit"
        disabled={pending}
        className="self-start border border-white/30 rounded-lg px-4 py-2 text-xs uppercase tracking-[0.15em] hover:border-white disabled:opacity-50"
      >
        Termin anlegen
      </button>
      <p className="text-[0.7rem] text-[var(--rk-ink-muted)]">
        Auch für private Termine ohne Auftrag (z. B. „Fußballspiel"). Der Tag zählt dann auf der öffentlichen
        Verfügbarkeit (/angebote) als belegt.
      </p>
      {state.error && <p className="text-sm text-red-400">{state.error}</p>}
    </form>
  );
}