import React from "react";
import ReactDOM from "react-dom";
import { createPortal } from "react-dom";
import { isBrowser } from "../Utils/utils";

import styles from "./Modal.less";

export interface ModalProps {
  visible: boolean;
  onCancel: (e: any) => void;
  container?: HTMLElement;
}

export class Modal extends React.PureComponent<ModalProps> {
  static hasShowWarning = false;

  render() {
    if (!isBrowser()) return null; // 服务端无需渲染下列代码，渲染也会出错
    const DEFAULT_CONTAINER: HTMLElement | null = document.getElementById(
      "container"
    );
    const { children, visible, onCancel, container } = this.props;
    let finalMountContainer: HTMLElement;
    if (!container) {
      if (!DEFAULT_CONTAINER) {
        if (!Modal.hasShowWarning) {
          Modal.hasShowWarning = true;
        }
        finalMountContainer = document.body;
      } else {
        if (!Modal.hasShowWarning) {
          Modal.hasShowWarning = true;
        }
        finalMountContainer = DEFAULT_CONTAINER;
      }
    } else {
      finalMountContainer = container;
    }
    return (
      visible &&
      createPortal(
        <div className={styles.wrapper}>
          <div className={styles.overlay} onClick={onCancel} />
          <div className={styles.container}>{children}</div>
        </div>,
        finalMountContainer
      )
    );
  }
}

export interface ModalCMDOptions {
  children: any;
  container?: HTMLElement;
  options?: {
    mask?: true;
  };
}

export interface ModalCMDRecord {
  modalInstance: HTMLElement;
}

export class ModalCMD {
  static currentModal: ModalCMDRecord[] = [];

  constructor() {
    ModalCMD.currentModal = [];
  }

  private static recordModal(record: ModalCMDRecord) {
    ModalCMD.currentModal.push(record);
  }

  private static delModal() {
    return ModalCMD.currentModal.pop();
  }

  static show({ children, container }: ModalCMDOptions) {
    const modalInstance = document.createElement("div");
    let targetMountDom = container ? container : document.body;
    targetMountDom.appendChild(modalInstance);
    ReactDOM.render(
      <>
        <div
          style={{
            position: "fixed",
            top: 0,
            bottom: 0,
            left: 0,
            right: 0,
            zIndex: 1000
          }}
        >
          <div
            style={{
              position: "absolute",
              top: 0,
              bottom: 0,
              left: 0,
              right: 0,
              background: "rgba(0,0,0,1)",
              opacity: 0.6,
              zIndex: -1
            }}
            onClick={() => {
              ModalCMD.hide(ModalCMD.currentModal.length);
            }}
          />

          <div
            style={{
              position: "absolute",
              top: "50%",
              left: "50%",
              transform: "translate(-50%, -50%)"
            }}
          >
            {children}
          </div>
        </div>
      </>,
      modalInstance
    );
    this.recordModal({
      modalInstance
    });
  }

  static hide(targetId?: string | number) {
    const popModalRecord: ModalCMDRecord | undefined = this.delModal();
    if (popModalRecord && popModalRecord.modalInstance) {
      ReactDOM.unmountComponentAtNode(popModalRecord.modalInstance);
      const { parentNode } = popModalRecord.modalInstance;
      parentNode && parentNode.removeChild(popModalRecord.modalInstance);
    }
  }
}

export default Modal;