import { useState } from 'react';

import { DSP408 } from '../../../../types';
import { Channel, InputSource, InputType, DiscreteFrequency } from '../../types';
import { SidebarId } from '../../constants';
import Button from '../../../../components/Button/Button';
import Card from '../../../../components/Card/Card';
import ChoiceSelect from '../../../../components/ChoiceSelect/ChoiceSelect';
import LinkChannelsModal from './LinkChannelsModal';
import CopyChannelModal from './CopyChannelModal';

import './MiscellaneousSection.css';
import { EyeIcon, EyeOffIcon } from '../../../../assets/icons/EyesIcons';

const INPUT_TYPES: readonly InputType[] = Object.values(InputType);
const DISCRETE_FREQUENCIES: readonly DiscreteFrequency[] = Object.values(DiscreteFrequency);

function MiscellaneousPanel({
  dsp,
  factoryReset,
  copyChannel,
  setInputSource,
  linkChannels,
  lockDevice,
  setActiveSidebar,
}: {
  dsp: DSP408;
  factoryReset: (force: boolean) => Promise<boolean>;
  copyChannel: (channel1: Channel, channel2: Channel) => Promise<boolean>;
  setInputSource: (inputSource: InputSource) => Promise<boolean>;
  linkChannels: (source: Channel, destinations: Channel[]) => Promise<boolean>;
  lockDevice: (password: string) => Promise<boolean>;
  setActiveSidebar: (id: SidebarId) => void;
}) {
  const [isFactoryResetting, setIsFactoryResetting] = useState(false);
  const [isResetConfirmOpen, setIsResetConfirmOpen] = useState(false);
  const [isLinkModalOpen, setIsLinkModalOpen] = useState(false);
  const [isCopyModalOpen, setIsCopyModalOpen] = useState(false);

  const [inputSource, setInputSourceState] = useState<InputSource>({
    type: InputType.Analog,
    frequency: DiscreteFrequency.F20,
  });

  const [password, setPassword] = useState('');
  const [isPasswordVisible, setIsPasswordVisible] = useState(false);

  const handleInputTypeChange = async (type: InputType) => {
    const nextSource: InputSource = {
      type,
      frequency: type === InputType.SineWave ? inputSource.frequency : DiscreteFrequency.F20,
    };

    setInputSourceState(nextSource);
    await setInputSource(nextSource);
  };

  const handleFrequencyChange = async (frequency: DiscreteFrequency) => {
    const nextSource: InputSource = {
      ...inputSource,
      frequency,
    };

    setInputSourceState(nextSource);
    await setInputSource(nextSource);
  };

  const handleFactoryReset = () => {
    setIsResetConfirmOpen(true);
  };

  const confirmFactoryReset = async () => {
    setIsResetConfirmOpen(false);
    setIsFactoryResetting(true);

    try {
      await factoryReset(true);
    } finally {
      setIsFactoryResetting(false);
    }
  };

  const handleLock = async () => {
    if (!password) {
      return;
    }

    const success = await lockDevice(password);

    if (success) {
      setPassword('');
      setActiveSidebar('overview');
    }
  };

  return (
    <div className="miscellaneous-section">
      <Card className="miscellaneous-panel">
        {/* Input Source */}
        <section className="miscellaneous-panel__section">
          <div className="miscellaneous-panel__section-header">
            <h2>Input Source</h2>
            <p>Select the signal source used by the DSP.</p>
          </div>

          <div className="miscellaneous-panel__row">
            <div className="miscellaneous-panel__field">
              <label htmlFor="misc-input-type">Source</label>

              <ChoiceSelect<InputType>
                id="misc-input-type"
                value={inputSource.type}
                options={INPUT_TYPES}
                onChange={handleInputTypeChange}
                style={{ color: 'var(--font-primary)' }}
              />
            </div>

            {inputSource.type === InputType.SineWave && (
              <div className="miscellaneous-panel__field">
                <label htmlFor="misc-frequency">Frequency</label>

                <ChoiceSelect<DiscreteFrequency>
                  id="misc-frequency"
                  value={inputSource.frequency}
                  options={DISCRETE_FREQUENCIES}
                  formatLabel={(frequency) => {
                    if (frequency === DiscreteFrequency.F31_5) {
                      return '31.5 Hz';
                    }

                    return `${frequency.slice(1)} Hz`;
                  }}
                  onChange={handleFrequencyChange}
                  style={{ color: 'var(--font-primary)' }}
                />
              </div>
            )}
          </div>
        </section>

        {/* Channel Tools */}
        <section className="miscellaneous-panel__section">
          <div className="miscellaneous-panel__section-header">
            <h2>Channel Tools</h2>
            <p>Copy settings between channels or link multiple channels.</p>
          </div>

          <div className="miscellaneous-panel__actions">
            <Button variant="outline" onClick={() => setIsCopyModalOpen(true)}>
              Copy Channel
            </Button>

            <Button variant="outline" onClick={() => setIsLinkModalOpen(true)}>
              Link Channels
            </Button>
          </div>
        </section>

        {/* Security */}
        <section className="miscellaneous-panel__section">
          <div className="miscellaneous-panel__section-header">
            <h2>Device Security</h2>
            <p>Lock access to the DSP.</p>
          </div>

          <div className="miscellaneous-panel__field">
            <label htmlFor="misc-password">Password</label>

            <div className="miscellaneous-panel__password-wrap">
              <input
                id="misc-password"
                type={isPasswordVisible ? 'text' : 'password'}
                maxLength={4}
                value={password}
                placeholder="Enter password"
                onChange={(e) => {
                  const value = e.target.value;

                  if (/^[\x20-\x7E]*$/.test(value)) {
                    setPassword(value);
                  }
                }}
              />

              <button
                type="button"
                className="miscellaneous-panel__password-toggle"
                onClick={() => setIsPasswordVisible((v) => !v)}
                aria-label={isPasswordVisible ? 'Hide password' : 'Show password'}
                aria-pressed={isPasswordVisible}
                tabIndex={-1}
              >
                {isPasswordVisible ? <EyeOffIcon /> : <EyeIcon />}
              </button>
            </div>
          </div>

          <div className="miscellaneous-panel__actions">
            <Button variant="outline" onClick={handleLock} disabled={password.length !== 4}>
              Lock Device
            </Button>
          </div>
        </section>

        {/* Factory Reset */}
        <section className="miscellaneous-panel__section miscellaneous-panel__section--danger">
          <div className="miscellaneous-panel__section-header">
            <h2>Factory Reset</h2>
            <p>Restore the DSP to its factory configuration. This cannot be undone.</p>
          </div>

          <div className="miscellaneous-panel__actions">
            <Button variant="outline" onClick={handleFactoryReset} disabled={isFactoryResetting}>
              {isFactoryResetting ? 'Resetting...' : 'Factory Reset'}
            </Button>
          </div>
        </section>
      </Card>

      {isLinkModalOpen && (
        <LinkChannelsModal
          dsp={dsp}
          onClose={() => setIsLinkModalOpen(false)}
          linkChannels={linkChannels}
        />
      )}

      {isCopyModalOpen && (
        <CopyChannelModal onClose={() => setIsCopyModalOpen(false)} copyChannel={copyChannel} />
      )}

      {isResetConfirmOpen && (
        <div className="confirm-modal-overlay" onClick={() => setIsResetConfirmOpen(false)}>
          <div className="confirm-modal" onClick={(e) => e.stopPropagation()}>
            <h3>Factory Reset DSP?</h3>
            <p>
              This will restore the DSP to its factory configuration. This action cannot be undone.
            </p>

            <div className="confirm-modal__actions">
              <Button variant="outline" onClick={() => setIsResetConfirmOpen(false)}>
                Cancel
              </Button>
              <Button variant="primary" onClick={confirmFactoryReset}>
                Factory Reset
              </Button>
            </div>
          </div>
        </div>
      )}
    </div>
  );
}

export default MiscellaneousPanel;