import {  useEffect, useState } from 'react';
import { App, ConfigProvider, Button, Form, Input, Flex, Checkbox,  Popconfirm, Select, Space, Upload, Divider, Modal } from 'antd';
import { UploadOutlined, LoadingOutlined } from '@ant-design/icons';
import '@dckj/react-better-modal/dist/index.css';
import DnDModal from '@/components/DndModal';
import useStyleStore from '@/stores/StyleStore';
import useConversationStore from '@/stores/ConversationStore';
import useAuthStore from '@/stores/AuthStore';

import LexicalEditor from '@/components/LexicalEditor';

import { v4 as uuid } from 'uuid';
import { cloneDeep, isEmpty, } from '@/utils/commons';
import './EmailEditor.css';
import { postSendEmail } from '@/actions/EmailActions';
import { sentMsgTypeMapped,   } from '@/channel/bubbleMsgUtils';
import { EmailBuilder, useEmailDetail, useEmailSignature } from '@/hooks/useEmail';
import useSnippetStore from '@/stores/SnippetStore'
import { useOrderStore } from '@/stores/OrderStore'

// 禁止上传的附件类型
// .application, .exe, .app
const disallowedAttachmentTypes = ['.ps1','.msi','application/x-msdownload', 'application/x-ms-dos-executable', 'application/x-ms-wmd', 'application/x-ms-wmz', 'application/x-ms-xbap', 'application/x-msaccess', ];

const getAbstract = (longtext) => {
  const lines = longtext.split('\n');
  const firstLine = lines[0];
  const abstract = firstLine.substring(0, 20);
  return abstract;
};
const parseHTMLText = (html) => {
  const parser = new DOMParser()
  const dom = parser.parseFromString(html, 'text/html')
  // Replace <br> and <p> with line breaks
  Array.from(dom.body.querySelectorAll('br, p')).forEach(el => {
    el.textContent = '\n' + el.textContent;
  });
  // Replace <hr> with a line of dashes
  Array.from(dom.body.querySelectorAll('hr')).forEach(el => {
    el.textContent = '\n------------------------------------------------------------------\n';
  });
  return dom.body.textContent || '';
}

const generateQuoteContent = (mailData, isRichText = true) => {
  const html = `<br><hr><p><b><strong >From: </strong></b><span >${((mailData.info?.MAI_From || '').replace(/</g,'&lt;').replace(/>/g,'&gt;'))} </span></p><p><b><strong >Sent: </strong></b><span >${mailData.info?.MAI_SendDate || ''}</span></p><p><b><strong >To: </strong></b><span >${(mailData.info?.MAI_To || '').replace(/</g,'&lt;').replace(/>/g,'&gt;')}</span></p><p><b><strong >Subject: </strong></b><span >${mailData.info?.MAI_Subject || ''}</span></p><p>${mailData.info?.MAI_ContentType === 'text/html' ? mailData.content : mailData.content.replace(/\r\n/g, '<br>')}</p>`
  return isRichText ? html : parseHTMLText(html)
};


const generateMailContent = (mailData) => `<br><br><p>${mailData.content}</p>`

/**
 * @property {string} fromEmail - 发件人邮箱
 * @property {string} fromUser - 发件人用户
 * @property {string} fromOrder - 发件订单
 * @property {string} toEmail - 收件人邮箱
 * @property {string} conversationid - 会话ID
 * @property {string} quoteid - 引用邮件ID
 * @property {object} draft - 草稿
 */
const EmailEditorPopup = ({ open, setOpen, fromEmail, fromUser, fromOrder, oid, toEmail, conversationid, quoteid, initial = {}, mailData: _mailData, action = 'reply', draft = {}, customerDetail={}, ...props }) => {
	const { notification, message } = App.useApp();
  const [form] = Form.useForm();

  const [mobile] = useStyleStore((state) => [state.mobile]);
  const [userId, username, emailList] = useAuthStore((state) => [state.loginUser.userId, state.loginUser.username, state.loginUser.emailList]);
  const emailListOption = emailList?.map(ele => ({ ...ele, label: ele.email, key: ele.email, value: ele.email })) || [];
  // const emailListMapped = emailListOption?.reduce((r, v) => ({ ...r, [v.opi_sn]: v }), {});
  const emailListAddrMapped = emailListOption?.reduce((r, v) => ({ ...r, [v.email]: v }), {});
  const emailListMatMapped = emailListOption?.reduce((r, v) => ({ ...r, [v.mat_sn]: v }), {});
  // console.log('emailListMapped', emailListOption, emailListAddrMapped);

  const mai_sn = quoteid;
  const { loading: getLoading, mailData } = useEmailDetail(mai_sn, _mailData)


  const [stickToProps, setStickToProps] = useState({});
  const [propsSerialize, setPropsSerialize] = useState('');

  const [newFromEmail, setNewFromEmail] = useState('');
  const [newToEmail, setNewToEmail] = useState('');
  const [emailOPI, setEmailOPI] = useState('');
  const [emailOrder, setEmailOrder] = useState('');
  const [emailMat, setEmailMat] = useState('');

  const stateReset = () => {
    setStickToProps({})
    setStickToCid('')
    setEmailOrder('')
    setEmailOPI('')
    setNewFromEmail('')
    setNewToEmail('')
  }

  const [contentPrefix, setContentPrefix] = useState('');

  // 存储: 会话ID,
  // 这个窗口没有模态, 即使不是focus, 还是需要保持会话ID
  // 否则, 会话列表切换之后, 会话ID更新, 导致消息关联错误
  const [stickToCid, setStickToCid] = useState(conversationid);
  useEffect(() => {
    const propsObj = { open, setOpen, fromEmail, fromUser, fromOrder, oid, toEmail, conversationid, quoteid, mai: _mailData?.info?.MAI_MAT_SN, action, draft }

    setContentPrefix(oid ? `<p>Dear Mr./Ms. ${customerDetail.name || ''}</p><p>Reference Number: ${oid}</p>` : '');

    // 没有引用邮件
    if (isEmpty(quoteid)) {
      setStickToProps(propsObj)
      setPropsSerialize(JSON.stringify(propsObj))

      setStickToCid(conversationid)
      setEmailOrder(fromOrder)
      setEmailOPI(fromUser)
      setNewFromEmail(fromEmail)
      setNewToEmail(toEmail)

      const _findMat = emailListAddrMapped?.[fromEmail]?.mat_sn
      setEmailMat(_findMat)

      // if (open !== true) {
      // form.resetFields()
      // }
    }
    // 转发/回复时, 使用详情的账户信息
    if (mailData.info?.MAI_MAT_SN) {
      const reEmailO = mailData.info?.MAI_COLI_SN
      const reEmailUser = mailData.info?.MAI_OPI_SN
      const reEmailUserMat = mailData.info?.MAI_MAT_SN

      setEmailOrder((prev) => reEmailO || prev || fromOrder)
      setEmailOPI((prev) => reEmailUser || prev)
      setEmailMat((prev) => reEmailUserMat || prev)

      const _findMatOld = emailListMatMapped?.[reEmailUserMat]
      if (_findMatOld) {
        setNewFromEmail(_findMatOld.email)
        setEmailOPI(_findMatOld.opi_sn)
        setEmailMat(_findMatOld.mat_sn)
      }
    }
    setShowQuoteContent(false);
    setMergeQuote(true);
    setQuoteContent('')

    return () => {}
  }, [open, mailData])

  const handleSwitchEmail = (labelValue) => {
    const { value } = labelValue
    setNewFromEmail(value)
    const _findMat = emailListAddrMapped?.[value]
    setEmailMat(_findMat?.mat_sn)
    setEmailOPI(_findMat?.opi_sn)
  };

  const { signature } = useEmailSignature(emailOPI)

  const [isRichText, setIsRichText] = useState(mobile === false);
  // const [isRichText, setIsRichText] = useState(false); // 默认纯文本
  const [htmlContent, setHtmlContent] = useState('');
  const [textContent, setTextContent] = useState('');

  const [showCc, setShowCc] = useState(true);
  const [showBcc, setShowBcc] = useState(false);
  const handleShowCc = () => {
    setShowCc(true);
  };
  const handleShowBcc = () => {
    setShowBcc(true);
  };

  const handleEditorChange = ({ editorStateJSON, htmlContent, textContent }) => {
    // console.log('textContent', textContent);
    // console.log('html', html);
    setHtmlContent(htmlContent);
    setTextContent(textContent);
    form.setFieldValue('content', htmlContent);
    form.setFieldValue('abstract', getAbstract(textContent));
  };

  const [initialForm, setInitialForm] = useState({});
  const [initialContent, setInitialContent] = useState('');
  const [showQuoteContent, setShowQuoteContent] = useState(false);
  const [mergeQuote, setMergeQuote] = useState(true);
  const [quoteContent, setQuoteContent] = useState('');

  useEffect(() => {
    // console.log('quoteid', quoteid, isEmpty(quoteid), isEmpty(mailData.info));

    if (isEmpty(quoteid) && action !== 'new') {
      return () => {}
    }
    const { info } = mailData
    // setShowCc(!isEmpty(mailData.info?.MAI_CS));

    const signatureBody = generateMailContent({ content: signature })

    // const preQuoteBody = generateQuoteContent(mailData)

    // const _initialContent = isEmpty(mailData.info) ? signatureBody : signatureBody+preQuoteBody

    if (!isEmpty(mailData.info) && action !== 'edit') {
      setInitialContent(contentPrefix + signatureBody)
    }

    const _formValues = {
      to: info?.MAI_From || newFromEmail,
      cc: info?.MAI_CS || '',
      // bcc: quote.bcc || '',
      subject: `Re: ${info.MAI_Subject || ''}`,
    }
    const forwardValues = { from: newFromEmail, subject: `Fw: ${info.MAI_Subject || ''}` }
    if (action === 'reply') {
      form.setFieldsValue(_formValues)
      setInitialForm(_formValues)
    } else if (action === 'forward') {
      setStickToCid('0')
      form.setFieldsValue(forwardValues)
      setInitialForm(forwardValues)
    } else if (action === 'edit') {
      const thisFormValues = {
        to: info?.MAI_To || '',
        cc: info?.MAI_CS || '',
        subject: info?.MAI_Subject || '',
      }
      form.setFieldsValue(thisFormValues)
      setInitialForm(thisFormValues)
      const thisBody = generateMailContent(mailData)
      // console.log('thisBody', thisBody);

      setInitialContent(thisBody)
    } else if (action === 'new') {
      const newEmail = { to: newToEmail, subject: draft?.subject || '' }
      form.setFieldsValue(newEmail)
      setInitialForm(newEmail)
      setInitialContent((draft?.content || contentPrefix || '') + signatureBody)
    }

    return () => {}
  }, [propsSerialize, mailData.info, signature, newToEmail, newFromEmail]);

  const [openPlainTextConfirm, setOpenPlainTextConfirm] = useState(false);
  const handlePlainTextOpenChange = ({ target }) => {
    const { checked: newChecked } = target;
    if (!newChecked) {
      setIsRichText(true);
      setOpenPlainTextConfirm(false);
      return;
    }
    setOpenPlainTextConfirm(true);
  };
  const confirmPlainText = () => {
    setIsRichText(false);
    setOpenPlainTextConfirm(false);
  };

  // 附件:
  // 1. ~直接上传返回地址~
  // 2. 发送文件信息
  const [fileList, setFileList] = useState([]);
  const handleChange = (info) => {
    let newFileList = [...info.fileList];
    // 2. Read from response and show file link
    newFileList = newFileList.map((file) => {
      if (file.response) {
        // Component will show file.url as link
        file.url = file.response.url;
      }
      return file;
    });
    setFileList(newFileList);
  };
  const normFile = (e) => {
    // console.log('Upload event:', e);
    if (Array.isArray(e)) {
      return e;
    }
    return e?.fileList;
  };
  const uploadProps = {
    // action: 'https://660d2bd96ddfa2943b33731c.mockapi.io/api/upload',
    // onChange: handleChange,
    multiple: true,
    fileList,
    beforeUpload: (file) => {
      // console.log('beforeUpload', file);
      const lastDotIndex = file.name.lastIndexOf('.');
      const extension = file.name.slice(lastDotIndex).toLocaleLowerCase();
      if (disallowedAttachmentTypes.includes(file.type) || disallowedAttachmentTypes.includes(extension)) {
        message.warning('不支持的文件格式: '+ extension)
        return false;
      }

      setFileList(prev => [...prev, file]);
      return false; // 阻止默认上传, 附件不上传阿里云
    },
    onRemove: (file) => {
      const index = fileList.indexOf(file);
      const newFileList = fileList.slice();
      newFileList.splice(index, 1);
      setFileList(newFileList);
    },
    onPreview: (file) => {
      // console.log('pn preview', file);
      return new Promise((resolve, reject) => {
        const reader = new FileReader();
        reader.onloadend = (e) => {
          if (file.size > 1.5 * 1024 * 1024) {
            message.info('附件太大，无法预览')
            // message.info('附件太大，无法预览, 请下载后查看')
            // var downloadLink = document.createElement('a');
            // downloadLink.href = e.target.result;
            // downloadLink.download = file.name;
            // downloadLink.click();
            resolve(e.target.result);
            return;
          }
          var win = window.open("", "_blank");
          win.document.body.style.margin = '0';
          if (file.type.startsWith('image/')) {
              win.document.write("<img src='" + e.target.result + "' style=\"max-width: 100%;\" />");
          } else if (file.type.startsWith('text/') || file.type === 'application/html' || file.type === 'application/xhtml+xml') {
              var iframe = win.document.createElement('iframe');
              iframe.srcdoc = e.target.result;
              iframe.style.width = '100%';
              iframe.style.height = '100%';
              iframe.style.border = 'none';
              win.document.body.appendChild(iframe);
              win.document.body.style.margin = '0';
          } else if (file.type === 'application/pdf') {
            // win.document.write("<iframe src='" + e.target.result + "' width='100%' height='100%' frameborder=\"0\"></iframe>");
            win.document.write("<embed  src='" + e.target.result + "' width='100%' height='100%' style=\"border:none\"></embed>");
            win.document.body.style.margin = '0';
          } else if (file.type.startsWith('audio/')) {
              win.document.write("<audio controls src='" + e.target.result + "' style=\"max-width: 100%;\"></audio>");
          } else if (file.type.startsWith('video/')) {
              win.document.write("<video controls src='" + e.target.result + "' style=\"max-width: 100%;\"></video>");
          } else {
              win.document.write("<h2>Preview not available for this file type</h2>");
          }
          // win.document.write("<iframe src='" + dataURL + "' width='100%' height='100%' style=\"border:none\"></iframe>");
          resolve(reader.result)
        };
        if (file.type.startsWith('text/') || file.type === 'application/html' || file.type === 'application/xhtml+xml') {
            reader.readAsText(file);
        } else {
            reader.readAsDataURL(file);
        }
        // reader.readAsDataURL(file);
        reader.onerror = (error) => reject(error);
      })
    },
  };

  /**
   * 保存成功, 推一个气泡
   * 再从异步通知更新消息发送状态
   */
  const sentOrReceivedNewMessage = useConversationStore((state) => state.sentOrReceivedNewMessage);
  const invokeEmailMessage = (msgObj) => {
    const msgObjMerge = {
      sender: 'me',
      senderName: 'me',
      // to: currentConversation.whatsapp_phone_number,
      date: new Date(),
      status: 'waiting', // accepted
      ...msgObj,
      // id: `${currentConversation.sn}.${msgObj.id}`,
      // id: `${stickToCid}.${msgObj.id}`,
      conversationid: stickToCid,
      msg_source: 'email',
    };
    // olog('invoke upload', msgObjMerge)
    const contentToRender = sentMsgTypeMapped[msgObjMerge.type].contentToRender(msgObjMerge);
    // console.log(contentToRender, 'contentToRender  sendMessage------------------');
    sentOrReceivedNewMessage(contentToRender.conversationid, contentToRender);
  };

  const [sendLoading, setSendLoading] = useState(false);

  const onHandleSend = async () => {
    // console.log('onSend callback', '\nisRichText', isRichText);
    // console.log(form.getFieldsValue());
    const body = structuredClone(form.getFieldsValue());
    body.from = newFromEmail;
    body.attaList = fileList;
    body.opi_sn = emailOPI;
    body.mat_sn = emailMat;
    body.coli_sn = emailOrder || '';
    // console.log('body', body, '\n', emailOrder);
    const values = await form.validateFields();
    const preQuoteBody = quoteid ? (quoteContent ? quoteContent : generateQuoteContent(mailData, isRichText)) : '';
    body.mailcontent = isRichText ? EmailBuilder({ subject: values.subject, content: htmlContent+preQuoteBody }) : textContent+preQuoteBody
    body.cc = values.cc || '';
    body.bcc = values.bcc || '';
    const msgObj = {
      type: 'email',
      id: uuid(),
      from: body.from,
      to: values.to,
      cc: values.cc || '',
      bcc: values.bcc || '',
      subject: values.subject,
      content: body.mailcontent,
      email: {
        subject: values.subject,
        content: body.mailcontent,
      },
      coli_id: stickToProps.oid || (emailOrder ? `{${emailOrder}}` : ''),
    }
    setSendLoading(true);
    body.externalID = stickToCid;
    body.actionID = `${stickToCid}.${msgObj.id}`;
    body.contenttype = isRichText ? 'text/html' : 'text/plain';
    try {
      const bubbleMsg = cloneDeep(msgObj);
      bubbleMsg.id = `${stickToCid}.${msgObj.id}`;
      // bubbleMsg.email.mai_sn = '';
      bubbleMsg.content = undefined;
      // invokeEmailMessage(bubbleMsg);

      // console.log('postSendEmail', body, '\n', msgObj);
      // return;
      const result = await postSendEmail(body);
      const mailSavedId = result.id || '';
      bubbleMsg.email.mai_sn = mailSavedId;
      // console.log('invokeEmailMessage', bubbleMsg);

      invokeEmailMessage(bubbleMsg);

      // setSendLoading(false);

      setOpen(false);
    } catch (error) {
      notification.error({
        message: "邮件保存失败",
        description: error.message,
        placement: "top",
        duration: 3,
      });

    } finally {
      setSendLoading(false);
    }
  };


  const [openDrawerSnippet] = useSnippetStore((state) => [state.openDrawer])
  const [openPaymentDrawer] = useOrderStore((state) => [state.openDrawer])

  return (
    <>
      <ConfigProvider theme={{ token: { colorPrimary: '#6366f1' } }}>
        <DnDModal
          rootClassName='email-editor-wrapper  !border-indigo-300 '
          open={open}
          setOpen={setOpen}
          initial={{ width: window.innerWidth - 600, height: window.innerHeight - 40, left: 300 + 24, top: 20 }}
          onCancel={() => {
            form.resetFields()
            stateReset()
          }}
          title={
            <>
              {getLoading ? <LoadingOutlined className='mr-1' /> : null}
              {initialForm.subject || `${!isEmpty(quoteid) ? '回复: ' : '写邮件: '} ${newFromEmail || ''}`}
            </>
          }
          footer={
            <div className='w-full flex gap-6 justify-start items-center text-indigo-600'>
              <Button type='primary' onClick={onHandleSend} loading={sendLoading}>
                发送
              </Button>
              <Popconfirm
                description='切换内容为纯文本格式将丢失信件和签名的格式, 确定使用纯文本?'
                onConfirm={confirmPlainText}
                open={openPlainTextConfirm}
                onCancel={() => setOpenPlainTextConfirm(false)}>
                <Checkbox checked={!isRichText} onChange={handlePlainTextOpenChange}>
                  纯文本
                </Checkbox>
              </Popconfirm>
              <Select labelInValue options={emailListOption} value={{ key: newFromEmail, value: newFromEmail, label: newFromEmail }} onChange={handleSwitchEmail} variant={'borderless'} />
            </div>
          }>
          <Form
            form={form}
            preserve={false}
            name={`email_max_form-${Date.now().toString(32)}`}
            size='small'
            layout={'inline'}
            variant={'borderless'}
            // initialValues={{}}
            // onFinish={() => {}}
            className='email-editor-wrapper *:mb-2 *:border-b *:border-t-0 *:border-x-0 *:border-indigo-100 *:border-solid '
            requiredMark={false}
            // labelCol={{ span: 3 }}
          >
            <Form.Item className='w-full'>
              <Space.Compact className='w-full'>
                <Form.Item name={'to'} label='收件人' rules={[{ required: true }]} className='!flex-1'>
                  <Input className='w-full' />
                </Form.Item>
                <Flex gap={4}>
                  {!showCc && (
                    <Button type='text' onClick={handleShowCc}>
                      Cc
                    </Button>
                  )}
                  {!showBcc && (
                    <Button type='text' hidden={showBcc} onClick={handleShowBcc}>
                      Bcc
                    </Button>
                  )}
                </Flex>
              </Space.Compact>
              {/* <Input
              addonAfter={
                <Flex gap={4}>
                  {!showCc && (
                    <Button type='text' onClick={handleShowCc}>
                      Cc
                    </Button>
                  )}
                  {!showBcc && (
                    <Button type='text' hidden={showBcc} onClick={handleShowBcc}>
                      Bcc
                    </Button>
                  )}
                </Flex>
              }
            /> */}
            </Form.Item>
            <Form.Item label='抄送' name={'cc'} hidden={!showCc} className='w-full pt-1'>
              <Input />
            </Form.Item>
            <Form.Item label='密送' name={'bcc'} hidden={!showBcc} className='w-full pt-1'>
              <Input />
            </Form.Item>
            <Form.Item label='主题' name={'subject'} rules={[{ required: true }]} className='w-full pt-1'>
              <Input />
            </Form.Item>
            <Form.Item name='atta' label='' className='w-full py-1 border-b-0' valuePropName='fileList' getValueFromEvent={normFile}>
              <Flex justify='space-between'>
                <Upload {...uploadProps} name='file' className='w-full'>
                  <Button icon={<UploadOutlined />}>附件</Button>
                </Upload>
                <Flex align={'center'} className='absolute right-0'>
                  <Divider type='vertical' />
                  <Button type={'link'} onClick={() => openDrawerSnippet()}>
                    图文集
                  </Button>
                  <Button type={'link'} onClick={() => openPaymentDrawer()}>
                    支付链接
                  </Button>
                  {/* 更多工具 */}
                  {/* <Popover
                    content={
                      <div className='flex flex-col gap-2'>
                        <Button type={'link'}>??</Button>
                      </div>
                    }
                    trigger='click'
                  ><MoreOutlined /></Popover> */}
                </Flex>
              </Flex>
            </Form.Item>
            <Form.Item name='content' hidden>
              <Input />
            </Form.Item>
            <Form.Item name='abstract' hidden>
              <Input />
            </Form.Item>
          </Form>
          <LexicalEditor {...{ isRichText }} onChange={handleEditorChange} defaultValue={initialContent} />
          {quoteid && !showQuoteContent && (
            <div className='flex justify-start items-center ml-2'>
              <Button className='flex gap-2 ' type='link' onClick={() => setShowQuoteContent(!showQuoteContent)}>
                显示引用内容 ↓
              </Button>
              {/* <Button className='flex gap-2 ' type='link' danger onClick={() => {setMergeQuote(false);setShowQuoteContent(false)}}>
                删除引用内容
              </Button> */}
            </div>
          )}
          {showQuoteContent && (
            <div contentEditable className='border-0 outline-none' onBlur={(e) => setQuoteContent(e.target.innerHTML)} dangerouslySetInnerHTML={{ __html: generateQuoteContent(mailData) }}></div>
          )}
        </DnDModal>
      </ConfigProvider>
    </>
  )
};
export default EmailEditorPopup;