import * as React from 'react';
import styles from '@patternfly/react-styles/css/components/ClipboardCopy/clipboard-copy';
import { css } from '@patternfly/react-styles';
import { PickOptional } from '../../helpers/typeUtils';
import { PopoverPosition } from '../Popover';
import { TooltipPosition } from '../Tooltip';
import { TextInput } from '../TextInput';
import { GenerateId } from '../../helpers/GenerateId/GenerateId';
import { ClipboardCopyButton } from './ClipboardCopyButton';
import { ClipboardCopyToggle } from './ClipboardCopyToggle';
import { ClipboardCopyExpanded } from './ClipboardCopyExpanded';

export const clipboardCopyFunc = (event: React.ClipboardEvent<HTMLDivElement>, text?: React.ReactNode) => {
  const clipboard = event.currentTarget.parentElement;
  const el = document.createElement('textarea');
  el.value = text.toString();
  clipboard.appendChild(el);
  el.select();
  document.execCommand('copy');
  clipboard.removeChild(el);
};

export enum ClipboardCopyVariant {
  inline = 'inline',
  expansion = 'expansion',
  inlineCompact = 'inline-compact'
}

export interface ClipboardCopyState {
  text: string | number;
  expanded: boolean;
  copied: boolean;
}

export interface ClipboardCopyProps extends Omit<React.HTMLProps<HTMLDivElement>, 'onChange'> {
  /** Additional classes added to the clipboard copy container. */
  className?: string;
  /** Tooltip message to display when hover the copy button */
  hoverTip?: string;
  /** Tooltip message to display when clicking the copy button */
  clickTip?: string;
  /** Aria-label to use on the TextInput. */
  textAriaLabel?: string;
  /** Aria-label to use on the ClipboardCopyToggle. */
  toggleAriaLabel?: string;
  /** Flag to show if the input is read only. */
  isReadOnly?: boolean;
  /** Flag to determine if clipboard copy is in the expanded state initially */
  isExpanded?: boolean;
  /** Flag to determine if clipboard copy content includes code */
  isCode?: boolean;
  /** Flag to determine if inline clipboard copy should be block styling */
  isBlock?: boolean;
  /** Adds Clipboard Copy variant styles. */
  variant?: typeof ClipboardCopyVariant | 'inline' | 'expansion' | 'inline-compact';
  /** Copy button popover position. */
  position?:
    | PopoverPosition
    | TooltipPosition
    | 'auto'
    | 'top'
    | 'bottom'
    | 'left'
    | 'right'
    | 'top-start'
    | 'top-end'
    | 'bottom-start'
    | 'bottom-end'
    | 'left-start'
    | 'left-end'
    | 'right-start'
    | 'right-end';
  /** Maximum width of the tooltip (default 150px). */
  maxWidth?: string;
  /** Delay in ms before the tooltip disappears. */
  exitDelay?: number;
  /** Delay in ms before the tooltip appears. */
  entryDelay?: number;
  /** Delay in ms before the tooltip message switch to hover tip. */
  switchDelay?: number;
  /** A function that is triggered on clicking the copy button. */
  onCopy?: (event: React.ClipboardEvent<HTMLDivElement>, text?: React.ReactNode) => void;
  /** A function that is triggered on changing the text. */
  onChange?: (text?: string | number) => void;
  /** The text which is copied. */
  children: React.ReactNode;
  /** Additional actions for inline clipboard copy. Should be wrapped with ClipboardCopyAction. */
  additionalActions?: React.ReactNode;
}

export class ClipboardCopy extends React.Component<ClipboardCopyProps, ClipboardCopyState> {
  static displayName = 'ClipboardCopy';
  timer = null as number;
  constructor(props: ClipboardCopyProps) {
    super(props);
    this.state = {
      text: Array.isArray(this.props.children)
        ? this.props.children.join('')
        : (this.props.children as string | number),
      expanded: this.props.isExpanded,
      copied: false
    };
  }

  static defaultProps: PickOptional<ClipboardCopyProps> = {
    hoverTip: 'Copy to clipboard',
    clickTip: 'Successfully copied to clipboard!',
    isReadOnly: false,
    isExpanded: false,
    isCode: false,
    variant: 'inline',
    position: PopoverPosition.top,
    maxWidth: '150px',
    exitDelay: 1600,
    entryDelay: 300,
    switchDelay: 2000,
    onCopy: clipboardCopyFunc,
    onChange: (): any => undefined,
    textAriaLabel: 'Copyable input',
    toggleAriaLabel: 'Show content',
    additionalActions: null
  };

  // eslint-disable-next-line @typescript-eslint/no-unused-vars
  componentDidUpdate = (prevProps: ClipboardCopyProps, prevState: ClipboardCopyState) => {
    if (prevProps.children !== this.props.children) {
      this.updateText(this.props.children as string | number);
    }
  };

  componentWillUnmount = () => {
    if (this.timer) {
      window.clearTimeout(this.timer);
    }
  };

  // eslint-disable-next-line @typescript-eslint/no-unused-vars
  expandContent = (_event: React.MouseEvent<Element, MouseEvent>) => {
    this.setState(prevState => ({
      expanded: !prevState.expanded
    }));
  };

  updateText = (text: string | number) => {
    this.setState({ text });
    this.props.onChange(text);
  };

  render = () => {
    const {
      /* eslint-disable @typescript-eslint/no-unused-vars */
      isExpanded,
      onChange, // Don't pass to <div>
      /* eslint-enable @typescript-eslint/no-unused-vars */
      isReadOnly,
      isCode,
      isBlock,
      exitDelay,
      maxWidth,
      entryDelay,
      switchDelay,
      onCopy,
      hoverTip,
      clickTip,
      textAriaLabel,
      toggleAriaLabel,
      variant,
      position,
      className,
      additionalActions,
      ...divProps
    } = this.props;
    const textIdPrefix = 'text-input-';
    const toggleIdPrefix = 'toggle-';
    const contentIdPrefix = 'content-';
    return (
      <div
        className={css(
          styles.clipboardCopy,
          variant === 'inline-compact' && styles.modifiers.inline,
          isBlock && styles.modifiers.block,
          this.state.expanded && styles.modifiers.expanded,
          className
        )}
        {...divProps}
      >
        {variant === 'inline-compact' && (
          <GenerateId prefix="">
            {id => (
              <React.Fragment>
                {!isCode && (
                  <span className={css(styles.clipboardCopyText)} id={`${textIdPrefix}${id}`}>
                    {this.state.text}
                  </span>
                )}
                {isCode && (
                  <code className={css(styles.clipboardCopyText, styles.modifiers.code)} id={`${textIdPrefix}${id}`}>
                    {this.state.text}
                  </code>
                )}
                <span className={css(styles.clipboardCopyActions)}>
                  <span className={css(styles.clipboardCopyActionsItem)}>
                    <ClipboardCopyButton
                      variant="plain"
                      exitDelay={exitDelay}
                      entryDelay={entryDelay}
                      maxWidth={maxWidth}
                      position={position}
                      id={`copy-button-${id}`}
                      textId={`text-input-${id}`}
                      aria-label={hoverTip}
                      onClick={(event: any) => {
                        if (this.timer) {
                          window.clearTimeout(this.timer);
                          this.setState({ copied: false });
                        }
                        onCopy(event, this.state.text);
                        this.setState({ copied: true }, () => {
                          this.timer = window.setTimeout(() => {
                            this.setState({ copied: false });
                            this.timer = null;
                          }, switchDelay);
                        });
                      }}
                    >
                      {this.state.copied ? clickTip : hoverTip}
                    </ClipboardCopyButton>
                  </span>
                  {additionalActions && additionalActions}
                </span>
              </React.Fragment>
            )}
          </GenerateId>
        )}
        {variant !== 'inline-compact' && (
          <GenerateId prefix="">
            {id => (
              <React.Fragment>
                <div className={css(styles.clipboardCopyGroup)}>
                  {variant === 'expansion' && (
                    <ClipboardCopyToggle
                      isExpanded={this.state.expanded}
                      onClick={this.expandContent}
                      id={`${toggleIdPrefix}${id}`}
                      textId={`${textIdPrefix}${id}`}
                      contentId={`${contentIdPrefix}${id}`}
                      aria-label={toggleAriaLabel}
                    />
                  )}
                  <TextInput
                    isReadOnly={isReadOnly || this.state.expanded}
                    onChange={this.updateText}
                    value={this.state.text as string | number}
                    id={`text-input-${id}`}
                    aria-label={textAriaLabel}
                  />
                  <ClipboardCopyButton
                    exitDelay={exitDelay}
                    entryDelay={entryDelay}
                    maxWidth={maxWidth}
                    position={position}
                    id={`copy-button-${id}`}
                    textId={`text-input-${id}`}
                    aria-label={hoverTip}
                    onClick={(event: any) => {
                      if (this.timer) {
                        window.clearTimeout(this.timer);
                        this.setState({ copied: false });
                      }
                      onCopy(event, this.state.text);
                      this.setState({ copied: true }, () => {
                        this.timer = window.setTimeout(() => {
                          this.setState({ copied: false });
                          this.timer = null;
                        }, switchDelay);
                      });
                    }}
                  >
                    {this.state.copied ? clickTip : hoverTip}
                  </ClipboardCopyButton>
                </div>
                {this.state.expanded && (
                  <ClipboardCopyExpanded
                    isReadOnly={isReadOnly}
                    isCode={isCode}
                    id={`content-${id}`}
                    onChange={this.updateText}
                  >
                    {this.state.text}
                  </ClipboardCopyExpanded>
                )}
              </React.Fragment>
            )}
          </GenerateId>
        )}
      </div>
    );
  };
}