import dayjs from "dayjs";
import shortid from "shortid";
import PropTypes from "prop-types";
import classnames from "classnames";
import React, { Fragment } from "react";
import intl from "react-intl-universal";
import { Icon, Button, Popover, Input, message } from "antd";
import Emoji from "./Emoji";
import Upload from "./Upload";
import Comment from "../../Comment";
import { isMobile } from "./../../utils";
import { OSS_LINK } from "../../constant";
import { isFunction } from "../../helper";
import {
  OSS_ENDPOINT,
  OSS_BUCKET,
  DRIVER_LICENSE_PATH,
  ERROR_DEFAULT
} from "../../constant";
import "./index.css";

const { TextArea } = Input;

const client = oss => {
  return new window.OSS.Wrapper({
    accessKeyId: oss.access_key_id,
    accessKeySecret: oss.access_key_secret,
    stsToken: oss.security_token,
    endpoint: OSS_ENDPOINT, //常量,你可以自己定义
    bucket: OSS_BUCKET
  });
};

const uploadPath = (path, file) => {
  return `${path}/${dayjs().format("YYYYMMDD")}/${shortid.generate()}.${
    file.type.split("/")[1]
  }`;
};

const UploadToOss = (oss, path, file) => {
  const url = uploadPath(path, file);
  return new Promise((resolve, reject) => {
    client(oss)
      .multipartUpload(url, file)
      .then(data => {
        resolve(data);
      })
      .catch(error => {
        reject(error);
      });
  });
};

class Editor extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      showUpload: false,
      value: props.value || "", // 编辑器里面的值
      fileList: props.fileList || [], // 图片列表
      fileMap: {}, // 已经上传的图片路径和 uid 的映射 { uid: path }
      uploadVisible: false // 上传图片弹窗是否可视
    };
    this.handleChange = this.handleChange.bind(this);
    this.handleClickEmoji = this.handleClickEmoji.bind(this);
    this.handleChangeFileList = this.handleChangeFileList.bind(this);
    this.handleShowUpload = this.handleShowUpload.bind(this);
    this.handleUpload = this.handleUpload.bind(this);
    this.handleSubmit = this.handleSubmit.bind(this);
    this.handlePaste = this.handlePaste.bind(this);
    this.resetState = this.resetState.bind(this);
    this.handleEmojiScroll = this.handleEmojiScroll.bind(this);
    this.handlePressEnter = this.handlePressEnter.bind(this);
    this.invokeFileListChange = this.invokeFileListChange.bind(this);
  }

  componentDidMount() {
    const { app, onRef, uploadDefaultShow } = this.props;
    if (
      app.currentUser &&
      (app.currentUser.user_id > 0 || app.currentUser.id > 0)
    ) {
      app.sOssSts();
    }
    if (isFunction(onRef)) {
      onRef(this);
    }
    if (uploadDefaultShow) {
      const uploadFileList = this.props.fileList || this.state.fileList;
      if (uploadFileList.length > 0) {
        this.setState({
          uploadVisible: true,
        });
      }
    }
  }

  handleEmojiScroll(e) {
    if (!this.emoji) {
      return;
    }
    e.preventDefault();
    if (e.deltaY > 0) {
      this.emoji.next();
    } else if (e.deltaY < 0) {
      this.emoji.prev();
    }
  }

  /**
   * 编辑器的值改变事件
   * 将最新的值存储到 state 中
   * @param {string} value 输入的值
   */
  handleChange(value) {
    this.setState({ value });
    if (this.props.onChange) {
      this.props.onChange(value);
    }
  }

  /**
   * 点击 emoji 的事件
   * 点击后，需要将改 emoji 插入到编辑器中
   * 插入的值为 [emoji chinese name]
   * 参数 emoji 即为 emoji chinese name
   * @param {string}} emoji emoji 的中文，如 微笑
   */
  handleClickEmoji(emoji) {
    let value = this.props.value || this.state.value;
    value += `[${emoji}]`;
    this.handleChange(value);
  }

  /**
   * 监听文件列表改变事件
   * @param {Array} fileList 文件列表
   */
  handleChangeFileList(fileList) {
    let list = fileList;
    if (fileList.length > this.props.maxUpload) {
      list = fileList.slice(0, this.props.maxUpload);
    }
    this.invokeFileListChange(list);
  }

  /**
   * 控制上传 Popover 的显示和隐藏
   * @param {boolean} showUpload 是否显示上传的 Popover
   */
  handleShowUpload(showUpload) {
    if (typeof showUpload === "boolean") {
      this.setState({ showUpload: showUpload });
    } else {
      this.setState({ showUpload: !this.state.showUpload });
    }
  }

  /**
   * 上传文件
   * @param {object} param 文件对象
   */
  handleUpload({ uid, path }) {
    const { fileMap } = this.state;
    let { fileList } = this.state;
    fileMap[uid] = path;
    fileList = fileList.map(item => {
      if (item.uid === uid) {
        item.thumbUrl = OSS_LINK + path;
      }
      return item;
    });
    this.setState({ fileMap });
    this.invokeFileListChange(fileList);
  }

  /**
   *  **统一处理fileList的修改**
   *  1. upload
   *  2. paste
   *  PS: 移动端需要做额外操作
   *  -- evo 20200223
   */
  invokeFileListChange(fileList) {
    const { limitOne, handleChangeFileList } = this.props;
    handleChangeFileList(fileList);
    this.setState({ fileList });
    if (limitOne && isMobile) {
      const file = fileList[0];
      if (
        file &&
        file.status === "done" &&
        !file.thumbUrl.includes("data:image")
      ) {
        this.setState({ uploadVisible: false });
      }
    }
  }

  /**
   * 粘贴回调
   */
  handlePaste(e) {
    if (this.state.fileList.length >= this.props.maxUpload) {
      return;
    }
    const items = e.clipboardData && e.clipboardData.items;
    let file = null;
    if (items && items.length) {
      for (let i = 0; i < items.length; i++) {
        if (items[i].type.indexOf("image") !== -1) {
          file = items[i].getAsFile();
          break;
        }
      }
      if (file === null) return;
    }
    this.setState({
      uploadVisible: true
    });
    let reader = new FileReader();
    reader.readAsDataURL(file);
    reader.onloadend = () => {
      // DRIVER_LICENSE_PATH oss 的存储路径位置
      UploadToOss(this.props.app.oss, DRIVER_LICENSE_PATH, file)
        .then(data => {
          const fileList = this.state.fileList.concat({
            url: OSS_LINK + data.name,
            thumbUrl: OSS_LINK + data.name,
            type: file.type,
            uid: new Date().valueOf()
          });
          this.invokeFileListChange(fileList);
        })
        .catch(e => {
          const msg = e.message || ERROR_DEFAULT;
          if (this.props.showError) {
            message.error(msg);
          }
          if (this.props.onError) {
            this.props.onError(msg, { response: e.response });
          }
        });
    };
  }

  /**
   * 提交编辑器内容
   * 提交功能，交给父组件来实现
   * 需要父组件传入 onSubmit
   */
  handleSubmit() {
    const { maxLength } = this.props;
    let { value, fileMap, fileList } = this.state;
    if (value.length > maxLength) {
      // message.error(`字数不得超过${maxLength}字`);
      message.error(intl.get("editor.maxLength", { maxLength }));
      return;
    }
    const files = [];
    if (fileList.length) {
      fileList.forEach(item => {
        if (item.url) {
          files.push(item.url);
          return;
        }
        if (!fileMap[item.uid]) {
          return;
        }
        files.push(`${OSS_LINK}${fileMap[item.uid]}`);
      });
    }
    if (this.props.beforeSubmit) {
      Promise.resolve(this.props.beforeSubmit({ text: value, files })).then(
        res => {
          if (!(res === false)) {
            this.props.onSubmit({ text: value, files }, (res, action) => {
              this.resetState();
              if (action === "comment" && this.props.onCommentSuccess) {
                this.props.onCommentSuccess(res);
              }
            });
          }
        }
      );
    } else {
      this.props.onSubmit({ text: value, files }, (res, action) => {
        this.resetState();
        if (action === "comment" && this.props.onCommentSuccess) {
          this.props.onCommentSuccess(res);
        }
      });
    }
  }

  resetState() {
    this.handleChange("");
    this.handleChangeFileList([]);
    this.setState({
      showUpload: false,
      value: "",
      fileList: [],
      fileMap: {}
    });
  }

  checkDisabledSubmit() {
    const { btnDisabled, value, fileList } = this.props;
    if (btnDisabled) {
      return true;
    }
    if (value && value !== "") {
      return false;
    }
    if (this.state.value && this.state.value !== "") {
      return false;
    }
    if (fileList && fileList.length > 0) {
      return false;
    }
    if (this.state.fileList.length > 0) {
      return false;
    }
    return true;
  }

  /**
   *  **处理Enter事件**
   *  1. `allowEnterSubmit`为true时enter触发submit事件
   *  2. `e.preventDefault`为了防止enter事件后仍触发换行
   *  3. enter事件开启后，仍可以用`shift + enter`触发换行
   *  -- evo 20200222
   */
  handlePressEnter(e) {
    if (this.props.allowEnterSubmit) {
      if (!e.shiftKey) {
        e.preventDefault();
        this.handleSubmit();
      }
    }
  }

  render() {
    const {
      value,
      // placeholder,
      rows,
      showEmoji,
      showUpload,
      multiple,
      emojiPopoverPlacement,
      uploadPopoverPlacement,
      uploadOverlayClassName,
      fileList,
      maxUpload,
      // btnSubmitText,
      btnLoading,
      button,
      emojiToolIcon,
      imageToolIcon,
      maxLength,
      autoFocus,
      app
    } = this.props;
    let placeholder = this.props.placeholder || intl.get("editor.placeholder");
    let btnSubmitText =
      this.props.btnSubmitText || intl.get("editor.SubmitBtn");
    const handleSubmit = this.handleSubmit;
    const disabledSubmit = this.checkDisabledSubmit();
    const inputValue = value || this.state.value;
    const uploadFileList = fileList || this.state.fileList;
    const isLogin =
      app.currentUser &&
      (app.currentUser.user_id > 0 || app.currentUser.id > 0);

    return (
      <div className="comment-editor-container" onPaste={this.handlePaste}>
        {isLogin ? (
          <Fragment>
            <div
              className={classnames({
                "comment-editor-toolbar": true,
                "comment-editor-toolbar-error": inputValue.length > maxLength
              })}
            ></div>
            <div className="comment-editor">
              <TextArea
                value={inputValue}
                onChange={e => {
                  this.handleChange(e.target.value);
                }}
                rows={rows}
                placeholder={placeholder}
                autoFocus={autoFocus}
                onPressEnter={this.handlePressEnter}
              />

              <div className="comment-toolbar">
                <div className="comment-toolbar-left">
                  {showEmoji && (
                    <Popover
                      trigger="click"
                      placement={emojiPopoverPlacement}
                      autoAdjustOverflow={false}
                      overlayStyle={{ zIndex: 9999 }}
                      content={
                        <div
                          style={{ width: 240, height: 205 }}
                          onWheel={this.handleEmojiScroll}
                        >
                          <Emoji
                            onClick={this.handleClickEmoji}
                            ref={node => {
                              this.emoji = node;
                            }}
                            emojiList={this.props.app.emojiList}
                          />
                        </div>
                      }
                      overlayClassName="comment-emoji-popover"
                    >
                      {emojiToolIcon || (
                        <Icon type="smile-o" className="comment-toolbar-icon" />
                      )}
                    </Popover>
                  )}

                  {showUpload ? (
                    <Popover
                      trigger="click"
                      // TODO: 针对非 react.js，直接使用 click 事件来控制展开或关闭
                      visible={this.state.uploadVisible}
                      placement={uploadPopoverPlacement}
                      overlayClassName={uploadOverlayClassName}
                      autoAdjustOverflow={false}
                      overlayStyle={{ zIndex: 9999 }}
                      onVisibleChange={visible => {
                        this.setState({
                          uploadVisible: visible
                        });
                      }}
                      content={
                        <div className="comment-img-popover">
                          <Upload
                            onRef={node => (this.uploadRef = node)}
                            multiple={multiple}
                            onChangeFileList={this.handleChangeFileList}
                            onUpload={this.handleUpload}
                            maxUpload={maxUpload}
                            fileList={uploadFileList}
                            showError={this.props.showError}
                            onError={this.props.onError}
                          />
                          <div className="clearfix" />
                        </div>
                      }
                      title={
                        <div className="comment-img-title">
                          <span>
                            {intl.get("editor.uploadTip")}
                            {maxUpload >= 2 ? (
                              <span className="comment-img-title-counter">
                                {intl.get("editor.uploadCount", {
                                  count: maxUpload - uploadFileList.length
                                })}
                              </span>
                            ) : null}
                          </span>
                        </div>
                      }
                    >
                      {imageToolIcon ? (
                        React.cloneElement(imageToolIcon, {
                          onClick: () => this.handleShowUpload(true)
                        })
                      ) : (
                        <Icon
                          type="picture"
                          className="comment-toolbar-icon"
                          style={{ marginLeft: 20 }}
                          onClick={() => this.handleShowUpload(true)}
                        />
                      )}
                    </Popover>
                  ) : null}
                </div>

                <div className="comment-toolbar-right">
                  {button ? (
                    React.cloneElement(button, {
                      onClick: button.props.onClick || handleSubmit
                    })
                  ) : (
                    <Button
                      onClick={() => this.handleSubmit()}
                      type="primary"
                      loading={btnLoading}
                      disabled={disabledSubmit}
                    >
                      {btnSubmitText}
                    </Button>
                  )}
                </div>
              </div>
            </div>
          </Fragment>
        ) : (
          <Fragment>
            <div className="comment-unlogin-tip">
              {intl.get("comment.unlogin")}
            </div>
            <div className="comment-unlogin-button">
              <Button
                type="primary"
                onClick={() => {
                  window.location.href = `${app.LOGINLINK}?f=${window.location.href}`;
                }}
              >
                {intl.get("account.login")}
              </Button>
            </div>
          </Fragment>
        )}
      </div>
    );
  }
}

Editor.propTypes = {
  rows: PropTypes.number,
  placeholder: PropTypes.string,
  showEmoji: PropTypes.bool,
  emojiPopoverPlacement: PropTypes.string,
  showUpload: PropTypes.bool,
  uploadPopoverPlacement: PropTypes.string,
  uploadOverlayClassName: PropTypes.string,
  multiple: PropTypes.bool,
  closeUploadWhenBlur: PropTypes.bool,
  maxUpload: PropTypes.number,
  value: PropTypes.string,
  onChange: PropTypes.func,
  onSubmit: PropTypes.func,
  beforeSubmit: PropTypes.func,
  btnSubmitText: PropTypes.string,
  btnLoading: PropTypes.bool,
  btnDisabled: PropTypes.bool,
  button: PropTypes.node,
  emojiToolIcon: PropTypes.node,
  imageToolIcon: PropTypes.node,
  uploadDefaultShow: PropTypes.bool,
  showError: PropTypes.bool,
  onError: PropTypes.func,
  maxLength: PropTypes.number,
  // Enter事件相关
  allowEnterSubmit: PropTypes.bool,
  // 私信仅允许选中一个，此处可以优化为通用的limit
  limitOne: PropTypes.bool
};

Editor.defaultProps = {
  rows: 5,
  // placeholder: "说点什么吧",
  showEmoji: true,
  showUpload: true,
  uploadDefaultShow: true,
  multiple: true,
  emojiPopoverPlacement: "bottomLeft",
  closeUploadWhenBlur: false,
  uploadPopoverPlacement: "bottomLeft",
  uploadOverlayClassName: "",
  maxUpload: 1,
  // btnSubmitText: "发表",
  btnLoading: false,
  btnDisabled: false,
  showError: true,
  maxLength: 5000,
  app: {},
  handleChangeFileList: () => {},
  // Enter事件相关
  allowEnterSubmit: false,
  limitOne: false
};

export default Comment(Editor);