import * as React from 'react';
import * as moment from 'moment';
import { polyfill } from 'react-lifecycles-compat';
import RcTimePicker from 'rc-time-picker/lib/TimePicker';
import classNames from 'classnames';
import LocaleReceiver from '../locale-provider/LocaleReceiver';
import { ConfigConsumer, ConfigProviderProps } from '../config-provider';
import defaultLocale from './locale/en_US';
import interopDefault from '../_util/interopDefault';
import Icon from '../icon';

export function generateShowHourMinuteSecond(format: string) {
  // Ref: http://momentjs.com/docs/#/parsing/string-format/
  return {
    showHour: format.indexOf('H') > -1 || format.indexOf('h') > -1 || format.indexOf('k') > -1,
    showMinute: format.indexOf('m') > -1,
    showSecond: format.indexOf('s') > -1,
  };
}

export interface TimePickerProps {
  className?: string;
  size?: 'large' | 'default' | 'small';
  value?: moment.Moment;
  defaultValue?: moment.Moment | moment.Moment[];
  open?: boolean;
  format?: string;
  onChange?: (time: moment.Moment, timeString: string) => void;
  onOpenChange?: (open: boolean) => void;
  disabled?: boolean;
  placeholder?: string;
  prefixCls?: string;
  hideDisabledOptions?: boolean;
  disabledHours?: () => number[];
  disabledMinutes?: (selectedHour: number) => number[];
  disabledSeconds?: (selectedHour: number, selectedMinute: number) => number[];
  style?: React.CSSProperties;
  getPopupContainer?: (triggerNode: Element) => HTMLElement;
  addon?: Function;
  use12Hours?: boolean;
  focusOnOpen?: boolean;
  hourStep?: number;
  minuteStep?: number;
  secondStep?: number;
  allowEmpty?: boolean;
  inputReadOnly?: boolean;
  clearText?: string;
  defaultOpenValue?: moment.Moment;
  popupClassName?: string;
  suffixIcon?: React.ReactNode;
}

export interface TimePickerLocale {
  placeholder: string;
}

class TimePicker extends React.Component<TimePickerProps, any> {
  static defaultProps = {
    prefixCls: 'ant-time-picker',
    align: {
      offset: [0, -2],
    },
    disabled: false,
    disabledHours: undefined,
    disabledMinutes: undefined,
    disabledSeconds: undefined,
    hideDisabledOptions: false,
    placement: 'bottomLeft',
    transitionName: 'slide-up',
    focusOnOpen: true,
  };

  static getDerivedStateFromProps(nextProps: TimePickerProps) {
    if ('value' in nextProps) {
      return { value: nextProps.value };
    }
    return null;
  }

  private timePickerRef: typeof RcTimePicker;

  constructor(props: TimePickerProps) {
    super(props);
    const value = props.value || props.defaultValue;
    if (value && !interopDefault(moment).isMoment(value)) {
      throw new Error(
        'The value/defaultValue of TimePicker must be a moment object after `antd@2.0`, ' +
          'see: https://u.ant.design/time-picker-value',
      );
    }
    this.state = {
      value,
    };
  }

  handleChange = (value: moment.Moment) => {
    if (!('value' in this.props)) {
      this.setState({ value });
    }
    const { onChange, format = 'HH:mm:ss' } = this.props;
    if (onChange) {
      onChange(value, (value && value.format(format)) || '');
    }
  };

  handleOpenClose = ({ open }: { open: boolean }) => {
    const { onOpenChange } = this.props;
    if (onOpenChange) {
      onOpenChange(open);
    }
  };

  saveTimePicker = (timePickerRef: typeof RcTimePicker) => {
    this.timePickerRef = timePickerRef;
  };

  focus() {
    this.timePickerRef.focus();
  }

  blur() {
    this.timePickerRef.blur();
  }

  getDefaultFormat() {
    const { format, use12Hours } = this.props;
    if (format) {
      return format;
    } else if (use12Hours) {
      return 'h:mm:ss a';
    }
    return 'HH:mm:ss';
  }

  renderTimePicker = (locale: TimePickerLocale) => {
    const { getPopupContainer, ...props } = this.props;
    delete props.defaultValue;

    const format = this.getDefaultFormat();
    const className = classNames(props.className, {
      [`${props.prefixCls}-${props.size}`]: !!props.size,
    });

    const addon = (panel: React.ReactElement<any>) =>
      props.addon ? (
        <div className={`${props.prefixCls}-panel-addon`}>{props.addon(panel)}</div>
      ) : null;

    const { suffixIcon, prefixCls } = props;
    const clockIcon = (suffixIcon &&
      (React.isValidElement<{ className?: string }>(suffixIcon) ? (
        React.cloneElement(suffixIcon, {
          className: classNames({
            [suffixIcon.props.className!]: suffixIcon.props.className,
            [`${prefixCls}-clock-icon`]: true,
          }),
        })
      ) : (
        <span className={`${prefixCls}-clock-icon`}>{suffixIcon}</span>
      ))) || <Icon type="clock-circle" className={`${prefixCls}-clock-icon`} theme="outlined" />;

    const inputIcon = <span className={`${prefixCls}-icon`}>{clockIcon}</span>;

    const clearIcon = (
      <Icon type="close-circle" className={`${prefixCls}-panel-clear-btn-icon`} theme="filled" />
    );

    return (
      <ConfigConsumer>
        {({ getPopupContainer: getContextPopupContainer }: ConfigProviderProps) => {
          return (
            <RcTimePicker
              {...generateShowHourMinuteSecond(format)}
              {...props}
              getPopupContainer={getPopupContainer || getContextPopupContainer}
              ref={this.saveTimePicker}
              format={format}
              className={className}
              value={this.state.value}
              placeholder={props.placeholder === undefined ? locale.placeholder : props.placeholder}
              onChange={this.handleChange}
              onOpen={this.handleOpenClose}
              onClose={this.handleOpenClose}
              addon={addon}
              inputIcon={inputIcon}
              clearIcon={clearIcon}
            />
          );
        }}
      </ConfigConsumer>
    );
  };

  render() {
    return (
      <LocaleReceiver componentName="TimePicker" defaultLocale={defaultLocale}>
        {this.renderTimePicker}
      </LocaleReceiver>
    );
  }
}

polyfill(TimePicker);

export default TimePicker;