import React, { useEffect, useRef, useState, useMemo } from 'react';
import { LogLevel, ILog } from 'Player';
import BottomBlock from '../BottomBlock';
import { Tabs, Icon, NoContent } from 'UI';
import {Input} from 'antd';
import {SearchOutlined, InfoCircleOutlined} from '@ant-design/icons';
import cn from 'classnames';
import ConsoleRow from '../ConsoleRow';
import { PlayerContext } from 'App/components/Session/playerContext';
import { observer } from 'mobx-react-lite';
import { useStore } from 'App/mstore';
import ErrorDetailsModal from 'App/components/Dashboard/components/Errors/ErrorDetailsModal';
import { useModal } from 'App/components/Modal';
import TabSelector from "../TabSelector";
import useAutoscroll, { getLastItemTime } from '../useAutoscroll';
import { useRegExListFilterMemo, useTabListFilterMemo } from '../useListFilter';
import { VList, VListHandle } from "virtua";

const ALL = 'ALL';
const INFO = 'INFO';
const WARNINGS = 'WARNINGS';
const ERRORS = 'ERRORS';

const LEVEL_TAB = {
  [LogLevel.INFO]: INFO,
  [LogLevel.LOG]: INFO,
  [LogLevel.WARN]: WARNINGS,
  [LogLevel.ERROR]: ERRORS,
  [LogLevel.EXCEPTION]: ERRORS,
  [LogLevel.DEBUG]: INFO,
} as const;

export const TABS = [ALL, ERRORS, WARNINGS, INFO].map((tab) => ({ text: tab, key: tab }));

const urlRegex = /(https?:\/\/[^\s)]+)/g;

export function renderWithNL(s: string | null = '') {
  if (typeof s !== 'string') return '';

  return s.split('\n').map((line, i) => {
    const parts = line.split(urlRegex);

    const formattedLine = parts.map((part, index) => {
      if (urlRegex.test(part)) {
        return (
          <a key={`link-${index}`} className={'link text-main'} href={part} target="_blank" rel="noopener noreferrer">
            {part}
          </a>
        );
      }
      return part;
    });

    return (
      <div key={i + line.slice(0, 6)} className={cn({ 'ml-20': i !== 0 })}>
        {formattedLine}
      </div>
    );
  });
}


export const getIconProps = (level: LogLevel) => {
  switch (level) {
    case LogLevel.INFO:
    case LogLevel.LOG:
      return {
        name: 'console/info',
        color: 'blue2',
      };
    case LogLevel.WARN:
      return {
        name: 'console/warning',
        color: 'red2',
      };
    case LogLevel.ERROR:
      return {
        name: 'console/error',
        color: 'red',
      };
    default:
      return {
        name: 'console/info',
      };
  }
};

const INDEX_KEY = 'console';

function ConsolePanel({
  isLive,
}: {
  isLive?: boolean;
}) {
  const {
    sessionStore: { devTools },
    uiPlayerStore,
  } = useStore();

  const zoomEnabled = uiPlayerStore.timelineZoom.enabled;
  const zoomStartTs = uiPlayerStore.timelineZoom.startTs;
  const zoomEndTs = uiPlayerStore.timelineZoom.endTs;

  const _list = useRef<VListHandle>(null);
  const filter = devTools[INDEX_KEY].filter;
  const activeTab = devTools[INDEX_KEY].activeTab;
  // Why do we need to keep index in the store? if we could get read of it it would simplify the code
  const activeIndex = devTools[INDEX_KEY].index;
  const [isDetailsModalActive, setIsDetailsModalActive] = useState(false);
  const { showModal } = useModal();

  const { player, store } = React.useContext(PlayerContext);
  const jump = (t: number) => player.jump(t);

  const { currentTab, tabStates } = store.get();
  const tabsArr = Object.keys(tabStates);
  const tabValues = Object.values(tabStates);
  const dataSource = uiPlayerStore.dataSource;
  const showSingleTab = dataSource === 'current';
  const { logList = [], exceptionsList = [], logListNow = [], exceptionsListNow = [] } = React.useMemo(() => {
    if (showSingleTab) {
      return tabStates[currentTab] ?? {};
    } else {
      const logList = tabValues.flatMap(tab => tab.logList);
      const exceptionsList = tabValues.flatMap(tab => tab.exceptionsList);
      const logListNow = isLive ? tabValues.flatMap(tab => tab.logListNow) : [];
      const exceptionsListNow = isLive ? tabValues.flatMap(tab => tab.exceptionsListNow) : [];
      return { logList, exceptionsList, logListNow, exceptionsListNow }
    }
  }, [currentTab, tabStates, dataSource, tabValues, isLive])
  const getTabNum = (tab: string) => (tabsArr.findIndex((t) => t === tab) + 1);

  const list = useMemo(() => {
    if (isLive) {
      return logListNow.concat(exceptionsListNow).sort((a, b) => a.time - b.time)
    } else {
      const logs = logList.concat(exceptionsList).sort((a, b) => a.time - b.time)
      return zoomEnabled ? logs.filter(l => l.time >= zoomStartTs && l.time <= zoomEndTs) : logs
    }
  }, [isLive, logList.length, exceptionsList.length, logListNow.length, exceptionsListNow.length, zoomEnabled, zoomStartTs, zoomEndTs])
  let filteredList = useRegExListFilterMemo(list, (l) => l.value, filter);
  filteredList = useTabListFilterMemo(filteredList, (l) => LEVEL_TAB[l.level], ALL, activeTab);

  const onTabClick = (activeTab: any) => devTools.update(INDEX_KEY, { activeTab });
  const onFilterChange = ({ target: { value } }: any) =>
    devTools.update(INDEX_KEY, { filter: value });

  // AutoScroll
  const [timeoutStartAutoscroll, stopAutoscroll] = useAutoscroll(
    filteredList,
    getLastItemTime(logListNow, exceptionsListNow),
    activeIndex,
    (index) => devTools.update(INDEX_KEY, { index })
  );
  const onMouseEnter = stopAutoscroll;
  const onMouseLeave = () => {
    if (isDetailsModalActive) {
      return;
    }
    timeoutStartAutoscroll();
  };

  useEffect(() => {
    if (_list.current) {
      // @ts-ignore
      _list.current.scrollToIndex(activeIndex);
    }
  }, [activeIndex]);

  const showDetails = (log: any) => {
    setIsDetailsModalActive(true);
    showModal(<ErrorDetailsModal errorId={log.errorId} />, {
      right: true,
      width: 1200,
      onClose: () => {
        setIsDetailsModalActive(false);
        timeoutStartAutoscroll();
      },
    });
    devTools.update(INDEX_KEY, { index: filteredList.indexOf(log) });
    stopAutoscroll();
  };

  return (
    <BottomBlock style={{ height: '100%' }} onMouseEnter={onMouseEnter} onMouseLeave={onMouseLeave}>
      {/* @ts-ignore */}
      <BottomBlock.Header>
        <div className="flex items-center">
          <span className="font-semibold color-gray-medium mr-4">Console</span>
          <Tabs tabs={TABS} active={activeTab} onClick={onTabClick} border={false} />
        </div>
        <div className={'flex items-center gap-2'}>
          <TabSelector />
          <Input
            className="rounded-lg"
            placeholder="Filter by keyword"
            name="filter"
            onChange={onFilterChange}
            value={filter}
            size='small'
            prefix={<SearchOutlined className='text-neutral-400' />}
          />
        </div>
        {/* @ts-ignore */}
      </BottomBlock.Header>
      {/* @ts-ignore */}
      <BottomBlock.Content className="overflow-y-auto">
        <NoContent
          title={
            <div className="capitalize flex items-center mt-16 gap-2">
              <InfoCircleOutlined size={18} />
              No Data
            </div>
          }
          size="small"
          show={filteredList.length === 0}
        >
          <VList ref={_list} itemSize={25}>
            {filteredList.map((log) => (
              <ConsoleRow
                log={log}
                jump={jump}
                iconProps={getIconProps(log.level)}
                renderWithNL={renderWithNL}
                onClick={() => showDetails(log)}
                showSingleTab={showSingleTab}
                getTabNum={getTabNum}
              />
            ))}
          </VList>
        </NoContent>
        {/* @ts-ignore */}
      </BottomBlock.Content>
    </BottomBlock>
  );
}

export default observer(ConsolePanel);