import { DeleteOutlined } from '@ant-design/icons';
import { Button, Space, Table, Typography, Upload } from 'antd';
import { RcFile } from 'antd/lib/upload';
import React, { useEffect, useState } from 'react';
import FormStatusIndicator from '../../../components/admin/FormStatusIndicator';

import { DELETE_EMOJI, fetchData, UPLOAD_EMOJI } from '../../../utils/apis';

import { ACCEPTED_IMAGE_TYPES, getBase64 } from '../../../utils/images';
import {
  createInputStatus,
  STATUS_ERROR,
  STATUS_PROCESSING,
  STATUS_SUCCESS,
} from '../../../utils/input-statuses';
import { RESET_TIMEOUT } from '../../../utils/config-constants';
import { URL_CUSTOM_EMOJIS } from '../../../utils/constants';

type CustomEmoji = {
  name: string;
  url: string;
};

const { Title, Paragraph } = Typography;

const Emoji = () => {
  const [emojis, setEmojis] = useState<CustomEmoji[]>([]);

  const [loading, setLoading] = useState(false);
  const [submitStatus, setSubmitStatus] = useState(null);
  const [uploadFile, setUploadFile] = useState<RcFile>(null);

  let resetTimer = null;
  const resetStates = () => {
    setSubmitStatus(null);
    clearTimeout(resetTimer);
    resetTimer = null;
  };

  async function getEmojis() {
    setLoading(true);
    try {
      const response = await fetchData(URL_CUSTOM_EMOJIS);
      setEmojis(response);
    } catch (error) {
      console.error('error fetching emojis', error);
    }
    setLoading(false);
  }
  useEffect(() => {
    getEmojis();
  }, []);

  async function handleDelete(fullPath: string) {
    const name = `/${fullPath.split('/').slice(3).join('/')}`;
    console.log(name);

    setLoading(true);

    setSubmitStatus(createInputStatus(STATUS_PROCESSING, 'Deleting emoji...'));

    try {
      const response = await fetchData(DELETE_EMOJI, {
        method: 'POST',
        data: { name },
      });

      if (response instanceof Error) {
        throw response;
      }

      setSubmitStatus(createInputStatus(STATUS_SUCCESS, 'Emoji deleted'));
      resetTimer = setTimeout(resetStates, RESET_TIMEOUT);
    } catch (error) {
      setSubmitStatus(createInputStatus(STATUS_ERROR, `${error}`));
      setLoading(false);
      resetTimer = setTimeout(resetStates, RESET_TIMEOUT);
    }

    getEmojis();
  }

  async function handleEmojiUpload() {
    setLoading(true);
    try {
      setSubmitStatus(createInputStatus(STATUS_PROCESSING, 'Converting emoji...'));

      // eslint-disable-next-line consistent-return
      const emojiData = await new Promise<CustomEmoji>((res, rej) => {
        if (!ACCEPTED_IMAGE_TYPES.includes(uploadFile.type)) {
          const msg = `File type is not supported: ${uploadFile.type}`;
          // eslint-disable-next-line no-promise-executor-return
          return rej(msg);
        }

        getBase64(uploadFile, (url: string) =>
          res({
            name: uploadFile.name,
            url,
          }),
        );
      });

      setSubmitStatus(createInputStatus(STATUS_PROCESSING, 'Uploading emoji...'));

      const response = await fetchData(UPLOAD_EMOJI, {
        method: 'POST',
        data: {
          name: emojiData.name,
          data: emojiData.url,
        },
      });

      if (response instanceof Error) {
        throw response;
      }

      setSubmitStatus(createInputStatus(STATUS_SUCCESS, 'Emoji uploaded successfully!'));
      getEmojis();
    } catch (error) {
      setSubmitStatus(createInputStatus(STATUS_ERROR, `${error}`));
    }

    resetTimer = setTimeout(resetStates, RESET_TIMEOUT);
    setLoading(false);
  }

  const columns = [
    {
      title: '',
      key: 'delete',
      render: (text, record) => (
        <Space size="middle">
          <Button onClick={() => handleDelete(record.url)} icon={<DeleteOutlined />} />
        </Space>
      ),
    },
    {
      title: 'Name',
      key: 'name',
      dataIndex: 'name',
    },
    {
      title: 'Emoji',
      key: 'url',
      render: (text, record) => (
        <img src={record.url} alt={record.name} style={{ maxWidth: '2vw' }} />
      ),
    },
  ];

  return (
    <div>
      <Title>Emojis</Title>
      <Paragraph>
        Here you can upload new custom emojis for usage in the chat. When uploading a new emoji, the
        filename will be used as emoji name.
      </Paragraph>

      <Table
        rowKey={record => record.url}
        dataSource={emojis}
        columns={columns}
        pagination={false}
      />
      <br />
      <Upload
        name="emoji"
        listType="picture"
        className="emoji-uploader"
        showUploadList={false}
        accept={ACCEPTED_IMAGE_TYPES.join(',')}
        beforeUpload={setUploadFile}
        customRequest={handleEmojiUpload}
        disabled={loading}
      >
        <Button type="primary" disabled={loading}>
          Upload new emoji
        </Button>
      </Upload>
      <FormStatusIndicator status={submitStatus} />
    </div>
  );
};

export default Emoji;