'use client';

import { useActionState, useState } from 'react';
import { changePassword } from './actions';

export default function ChangePasswordPage() {
  const [state, action, isPending] = useActionState(changePassword, undefined);
  const [showNew, setShowNew] = useState(false);
  const [showConfirm, setShowConfirm] = useState(false);

  return (
    <div className="min-h-screen bg-white py-4 px-4">
      <main className="max-w-6xl mx-auto border-2 border-black rounded-lg p-6 bg-[#FFFFDD]">
        <h1 className="text-3xl font-bold mb-6">Logbuch — Sternwarte Welzheim</h1>

        <div className="flex justify-center py-10">
          <div className="w-full max-w-sm bg-white border border-gray-300 rounded-xl shadow-md p-8">
            <h2 className="text-xl font-semibold text-gray-900 mb-2 text-center">Passwort ändern</h2>
            <p className="text-sm text-amber-700 bg-amber-50 border border-amber-300 rounded-lg px-3 py-2 mb-6 text-center">
              Bitte wählen Sie ein neues Passwort, bevor Sie fortfahren.
            </p>

            <form action={action} className="space-y-5">
              <div>
                <label htmlFor="newPassword" className="block text-sm font-medium text-gray-700 mb-1">
                  Neues Passwort
                </label>
                <div className="relative">
                  <input
                    id="newPassword"
                    name="newPassword"
                    type={showNew ? 'text' : 'password'}
                    required
                    minLength={6}
                    className="w-full px-3 py-2 pr-10 border-2 border-gray-400 rounded-lg bg-white text-gray-900 focus:border-blue-500 focus:outline-none text-sm"
                    placeholder="mind. 6 Zeichen"
                    disabled={isPending}
                  />
                  <button
                    type="button"
                    onClick={() => setShowNew((v) => !v)}
                    tabIndex={-1}
                    className="absolute inset-y-0 right-0 px-3 flex items-center text-gray-500 hover:text-gray-800"
                  >
                    {showNew ? (
                      <svg xmlns="http://www.w3.org/2000/svg" className="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13.875 18.825A10.05 10.05 0 0112 19c-4.478 0-8.268-2.943-9.543-7a9.97 9.97 0 011.563-3.029m5.858.908a3 3 0 114.243 4.243M9.878 9.878l4.242 4.242M9.88 9.88l-3.29-3.29m7.532 7.532l3.29 3.29M3 3l3.59 3.59m0 0A9.953 9.953 0 0112 5c4.478 0 8.268 2.943 9.543 7a10.025 10.025 0 01-4.132 4.411m0 0L21 21" />
                      </svg>
                    ) : (
                      <svg xmlns="http://www.w3.org/2000/svg" className="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z" />
                      </svg>
                    )}
                  </button>
                </div>
              </div>

              <div>
                <label htmlFor="confirmPassword" className="block text-sm font-medium text-gray-700 mb-1">
                  Passwort bestätigen
                </label>
                <div className="relative">
                  <input
                    id="confirmPassword"
                    name="confirmPassword"
                    type={showConfirm ? 'text' : 'password'}
                    required
                    className="w-full px-3 py-2 pr-10 border-2 border-gray-400 rounded-lg bg-white text-gray-900 focus:border-blue-500 focus:outline-none text-sm"
                    placeholder="Passwort wiederholen"
                    disabled={isPending}
                  />
                  <button
                    type="button"
                    onClick={() => setShowConfirm((v) => !v)}
                    tabIndex={-1}
                    className="absolute inset-y-0 right-0 px-3 flex items-center text-gray-500 hover:text-gray-800"
                  >
                    {showConfirm ? (
                      <svg xmlns="http://www.w3.org/2000/svg" className="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13.875 18.825A10.05 10.05 0 0112 19c-4.478 0-8.268-2.943-9.543-7a9.97 9.97 0 011.563-3.029m5.858.908a3 3 0 114.243 4.243M9.878 9.878l4.242 4.242M9.88 9.88l-3.29-3.29m7.532 7.532l3.29 3.29M3 3l3.59 3.59m0 0A9.953 9.953 0 0112 5c4.478 0 8.268 2.943 9.543 7a10.025 10.025 0 01-4.132 4.411m0 0L21 21" />
                      </svg>
                    ) : (
                      <svg xmlns="http://www.w3.org/2000/svg" className="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z" />
                      </svg>
                    )}
                  </button>
                </div>
              </div>

              {state?.error && (
                <div className="bg-red-50 border border-red-300 text-red-700 px-3 py-2 rounded-lg text-sm">
                  {state.error}
                </div>
              )}

              <button
                type="submit"
                disabled={isPending}
                className="w-full py-2 px-4 bg-[#85B7D7] hover:bg-[#6a9fc5] text-black font-medium rounded-lg transition-colors disabled:opacity-50 disabled:cursor-not-allowed text-sm"
              >
                {isPending ? 'Wird gespeichert...' : 'Passwort speichern'}
              </button>
            </form>
          </div>
        </div>
      </main>
    </div>
  );
}