import * as React from 'react';
import { Modifier, Placement } from '@popperjs/core';
import { deepmerge } from 'deepmerge-ts';
import is from 'is-lite';
import { SetRequired } from 'type-fest';

import { LogOptions, PopperModifiers, Props } from '../types';

export const portalId = 'react-floater-portal';

export function canUseDOM(): boolean {
  return !!(typeof window !== 'undefined' && window.document?.createElement);
}

export function enhanceProps(props: Props) {
  return {
    autoOpen: false,
    debug: false,
    disableFlip: false,
    disableHoverToClick: false,
    event: 'click',
    eventDelay: 0.4,
    hideArrow: false,
    offset: 15,
    placement: 'bottom',
    showCloseButton: false,
    styles: {},
    target: null,
    wrapperOptions: {
      position: false,
    },
    ...props,
  } satisfies SetRequired<Props, 'wrapperOptions'>;
}

export function getFallbackPlacements(placement: Placement): Placement[] | undefined {
  if (placement.startsWith('left')) {
    return ['top', 'bottom'];
  }

  if (placement.startsWith('right')) {
    return ['bottom', 'top'];
  }

  return undefined;
}

export function getModifiers(modifiers?: PopperModifiers): PopperModifiers {
  const defaultOptions = {
    flip: {
      name: 'flip',
      enabled: true,
      options: {
        padding: 20,
      },
    },
    preventOverflow: {
      name: 'preventOverflow',
      enabled: true,
      options: {
        padding: 10,
      },
    },
  };

  return deepmerge(defaultOptions, modifiers ?? {});
}

export function isFixed(el: HTMLElement | null): boolean {
  if (!el) {
    return false;
  }

  const { nodeName } = el;

  if (nodeName === 'BODY' || nodeName === 'HTML') {
    return false;
  }

  if (getComputedStyle(el).position === 'fixed') {
    return true;
  }

  return el.parentNode instanceof HTMLElement ? isFixed(el.parentNode) : false;
}

export function isMobile(): boolean {
  return 'ontouchstart' in window && /Mobi/.test(navigator.userAgent);
}

export function isValidElement(object: unknown): object is React.ReactElement {
  return React.isValidElement(object);
}

/**
 * Log method calls if debug is enabled
 */
export function log({ data, debug = false, title }: LogOptions): void {
  /* eslint-disable no-console */
  const logFn = console.log;

  if (debug && title && data) {
    console.groupCollapsed(
      `%creact-floater: ${title}`,
      'color: #9b00ff; font-weight: bold; font-size: 12px;',
    );

    if (Array.isArray(data)) {
      data.forEach(d => {
        if (is.plainObject(d) && d.key) {
          logFn.apply(console, [d.key, d.value]);
        } else {
          logFn.apply(console, [d]);
        }
      });
    } else {
      logFn.apply(console, [data]);
    }

    console.groupEnd();
  }
  /* eslint-enable */
}

export function mergeModifier(
  modifier: Partial<Modifier<any, any>>,
  customModifier?: Partial<Modifier<any, any>>,
): Partial<Modifier<any, any>> {
  return deepmerge(modifier, customModifier ?? {});
}

export function off(
  element: Element,
  eventType: string,
  handler: EventListener,
  options: boolean | EventListenerOptions = false,
): void {
  element.removeEventListener(eventType, handler, options);
}

export function on(
  element: HTMLElement,
  eventType: string,
  handler: EventListener,
  options: boolean | EventListenerOptions = false,
): void {
  element.addEventListener(eventType, handler, options);
}

export function once(
  element: HTMLElement,
  eventType: string,
  handler: EventListener,
  options: boolean | EventListenerOptions = false,
): void {
  let nextCB: EventListener;

  // eslint-disable-next-line prefer-const
  nextCB = event => {
    handler(event);
    off(element, eventType, nextCB);
  };

  on(element, eventType, nextCB, options);
}

export function randomId(): string {
  return `rf-${Math.round(Math.random() * 1e5)}`;
}