import {FatalError, Widget} from '@bthlabs/homehub-components';
import {
  IconArrowsRotate, IconBasicLightbulb, Icon,
} from '@bthlabs/homehub-icons';
import ClassName from 'classnames';
import React from 'react';
import {Form} from 'react-bootstrap';

import './TradfriWidgetView.scss';

export const TradfriWidgetSettingsView = (props) => {
  const onHostInputChange = React.useCallback(
    (event) => {
      props.setNextCharacteristics({
        ...props.nextCharacteristics,
        host: event.target.value,
      });
    },
    [props]
  );

  const onKeyInputChange = React.useCallback(
    (event) => {
      props.setNextCharacteristics({
        ...props.nextCharacteristics,
        key: event.target.value,
      });
    },
    [props]
  );

  if (!props.nextCharacteristics) {
    return null;
  }

  return (
    <Form>
      <Form.Group controlId="input-host">
        <Form.Label>Host</Form.Label>
        <Form.Control
          size="sm"
          value={props.nextCharacteristics.host}
          onChange={onHostInputChange}
        />
      </Form.Group>

      <Form.Group controlId="input-key">
        <Form.Label>Key</Form.Label>
        <Form.Control
          size="sm"
          value={props.nextCharacteristics.key}
          onChange={onKeyInputChange}
        />
      </Form.Group>
    </Form>
  );
};

export const Group = (props) => {
  const lights = React.useMemo(
    () => {
      return props.lights.filter((light) => {
        return props.group.member_ids.includes(light.id);
      });
    },
    [props]
  );

  const isOn = React.useMemo(
    () => {
      return lights.every((light) => {
        return light.state;
      });
    },
    [lights]
  );

  const onClick = React.useCallback(
    () => {
      props.onSetLightsState(
        lights.map((light) => {
          return light.id;
        }),
        !isOn
      );
    },
    [props, lights, isOn]
  );

  const groupClassName = ClassName('group', {
    'group-on': isOn,
  });

  return (
    <div className={groupClassName} onClick={onClick}>
      <span _hint="GroupName">{props.group.name}</span>
      <Icon icon={IconBasicLightbulb} size={24} />
    </div>
  );
};

export const TradfriWidgetView = (props) => {
  const onGroupSetLightsState = React.useCallback(
    (lightIds, nextState) => {
      (async () => {
        const nextServiceState = {
          data: {
            ...props.serviceState.data(),
            lights: props.serviceState.data().lights.map((light) => {
              if (lightIds.includes(light.id)) {
                return {
                  ...light,
                  state: nextState,
                };
              }

              return light;
            }),
          },
        };
        props.setServiceState(nextServiceState);

        await props.service.setLightsState(lightIds, nextState);
      })();
    },
    [props]
  );

  if (props.serviceState === null) {
    return null;
  }

  const className = ClassName('TradfriWidgetView', {
    'is-loading': (
      props.serviceState.isLoading() || props.serviceState.hasFatalError()
    ),
  });

  return (
    <Widget className={className} {...props}>
      {props.serviceState.isLoading() &&
        <Icon
          _hint="Loader"
          className="animation-loading loader"
          icon={IconArrowsRotate}
          size={78}
        />
      }
      {props.serviceState.hasData() && props.serviceState.data().groups.map((group) => {
        return (
          <Group
            key={`${group.id}`}
            group={group}
            lights={props.serviceState.data().lights}
            onSetLightsState={onGroupSetLightsState}
          />
        );
      })}
      {props.serviceState.hasFatalError() &&
        <FatalError
          service={props.service}
          serviceState={props.serviceState}
        />
      }
    </Widget>
  );
};

TradfriWidgetView.defaultLayout = {
  h: 4,
  w: 6,
};
TradfriWidgetView.icon = IconBasicLightbulb;
TradfriWidgetView.layoutConstraints = {
  minH: 4,
  minW: 6,
};
TradfriWidgetView.settingsView = TradfriWidgetSettingsView;
TradfriWidgetView.title = 'Tradfri';