import React, { useState, useEffect } from 'react';
import {
  Table,
  Tag,
  Space,
  Button,
  Modal,
  Checkbox,
  Input,
  Typography,
  Tooltip,
  Row,
  Col,
} from 'antd';
import { DeleteOutlined } from '@ant-design/icons';
import isValidUrl, { DEFAULT_TEXTFIELD_URL_PATTERN } from '../utils/urls';

import { fetchData, DELETE_WEBHOOK, CREATE_WEBHOOK, WEBHOOKS } from '../utils/apis';

const { Title, Paragraph } = Typography;

const availableEvents = {
  CHAT: { name: 'Chat messages', description: 'When a user sends a chat message', color: 'purple' },
  USER_JOINED: { name: 'User joined', description: 'When a user joins the chat', color: 'green' },
  NAME_CHANGE: {
    name: 'User name changed',
    description: 'When a user changes their name',
    color: 'blue',
  },
  'VISIBILITY-UPDATE': {
    name: 'Message visibility changed',
    description: 'When a message visibility changes, likely due to moderation',
    color: 'red',
  },
  STREAM_STARTED: { name: 'Stream started', description: 'When a stream starts', color: 'orange' },
  STREAM_STOPPED: { name: 'Stream stopped', description: 'When a stream stops', color: 'cyan' },
};

function convertEventStringToTag(eventString) {
  if (!eventString || !availableEvents[eventString]) {
    return null;
  }

  const event = availableEvents[eventString];

  return (
    <Tooltip key={eventString} title={event.description}>
      <Tag color={event.color}>{event.name}</Tag>
    </Tooltip>
  );
}
interface Props {
  onCancel: () => void;
  onOk: any; // todo: make better type
  visible: boolean;
}

function NewWebhookModal(props: Props) {
  const { onOk, onCancel, visible } = props;

  const [selectedEvents, setSelectedEvents] = useState([]);
  const [webhookUrl, setWebhookUrl] = useState('');

  const events = Object.keys(availableEvents).map(key => {
    return { value: key, label: availableEvents[key].description };
  });

  function onChange(checkedValues) {
    setSelectedEvents(checkedValues);
  }

  function selectAll() {
    setSelectedEvents(Object.keys(availableEvents));
  }

  function save() {
    onOk(webhookUrl, selectedEvents);

    // Reset the modal
    setWebhookUrl('');
    setSelectedEvents(null);
  }

  const okButtonProps = {
    disabled: selectedEvents?.length === 0 || !isValidUrl(webhookUrl),
  };

  const checkboxes = events.map(function (singleEvent) {
    return (
      <Col span={8} key={singleEvent.value}>
        <Checkbox value={singleEvent.value}>{singleEvent.label}</Checkbox>
      </Col>
    );
  });

  return (
    <Modal
      title="Create New Webhook"
      visible={visible}
      onOk={save}
      onCancel={onCancel}
      okButtonProps={okButtonProps}
    >
      <div>
        <Input
          value={webhookUrl}
          placeholder="https://myserver.com/webhook"
          onChange={input => setWebhookUrl(input.currentTarget.value.trim())}
          type="url"
          pattern={DEFAULT_TEXTFIELD_URL_PATTERN}
        />
      </div>

      <p>Select the events that will be sent to this webhook.</p>
      <Checkbox.Group style={{ width: '100%' }} value={selectedEvents} onChange={onChange}>
        <Row>{checkboxes}</Row>
      </Checkbox.Group>
      <p>
        <Button type="primary" onClick={selectAll}>
          Select all
        </Button>
      </p>
    </Modal>
  );
}

export default function Webhooks() {
  const [webhooks, setWebhooks] = useState([]);
  const [isModalVisible, setIsModalVisible] = useState(false);

  const columns = [
    {
      title: '',
      key: 'delete',
      render: (text, record) => (
        <Space size="middle">
          <Button onClick={() => handleDelete(record.id)} icon={<DeleteOutlined />} />
        </Space>
      ),
    },
    {
      title: 'URL',
      dataIndex: 'url',
      key: 'url',
    },
    {
      title: 'Events',
      dataIndex: 'events',
      key: 'events',
      render: events => (
        <>
          {events.map(event => {
            return convertEventStringToTag(event);
          })}
        </>
      ),
    },
  ];

  function handleError(error) {
    console.error('error', error);
    alert(error);
  }

  async function getWebhooks() {
    try {
      const result = await fetchData(WEBHOOKS);
      setWebhooks(result);
    } catch (error) {
      handleError(error);
    }
  }

  useEffect(() => {
    getWebhooks();
  }, []);

  async function handleDelete(id) {
    try {
      await fetchData(DELETE_WEBHOOK, { method: 'POST', data: { id } });
      getWebhooks();
    } catch (error) {
      handleError(error);
    }
  }

  async function handleSave(url: string, events: string[]) {
    try {
      const newHook = await fetchData(CREATE_WEBHOOK, {
        method: 'POST',
        data: { url, events },
      });
      setWebhooks(webhooks.concat(newHook));
    } catch (error) {
      handleError(error);
    }
  }

  const showCreateModal = () => {
    setIsModalVisible(true);
  };

  const handleModalSaveButton = (url, events) => {
    setIsModalVisible(false);
    handleSave(url, events);
  };

  const handleModalCancelButton = () => {
    setIsModalVisible(false);
  };

  return (
    <div>
      <Title>Webhooks</Title>
      <Paragraph>
        A webhook is a callback made to an external API in response to an event that takes place
        within Owncast. This can be used to build chat bots or sending automatic notifications that
        you&apos;ve started streaming.
      </Paragraph>
      <Paragraph>
        Read more about how to use webhooks, with examples, at{' '}
        <a
          href="https://owncast.online/docs/integrations/?source=admin"
          target="_blank"
          rel="noopener noreferrer"
        >
          our documentation
        </a>
        .
      </Paragraph>

      <Table
        rowKey={record => record.id}
        columns={columns}
        dataSource={webhooks}
        pagination={false}
      />
      <br />
      <Button type="primary" onClick={showCreateModal}>
        Create Webhook
      </Button>
      <NewWebhookModal
        visible={isModalVisible}
        onOk={handleModalSaveButton}
        onCancel={handleModalCancelButton}
      />
    </div>
  );
}