import { useEffect, useMemo, useRef, useState } from 'react';
import {
  AppsNavBarLeft,
  AppsNavBarParent,
  AppsNavBarRight,
} from './Apps-styles';
import { NavBack } from '../../assets/Icons/NavBack.tsx';
import { NavAdd } from '../../assets/Icons/NavAdd.tsx';
import { ButtonBase, Tab, Tabs, useTheme } from '@mui/material';
import {
  executeEvent,
  subscribeToEvent,
  unsubscribeFromEvent,
} from '../../utils/events';
import RefreshIcon from '@mui/icons-material/Refresh';
import { navigationControllerAtom } from '../../atoms/global';
import { AppsDevModeTabComponent } from './AppsDevModeTabComponent';
import { useAtom } from 'jotai';

export const AppsDevModeNavBar = () => {
  const [tabs, setTabs] = useState([]);
  const [selectedTab, setSelectedTab] = useState(null);
  const [navigationController, setNavigationController] = useAtom(
    navigationControllerAtom
  );

  const theme = useTheme();
  const [isNewTabWindow, setIsNewTabWindow] = useState(false);
  const tabsRef = useRef(null);
  const [anchorEl, setAnchorEl] = useState(null);
  const open = Boolean(anchorEl);

  const handleClick = (event) => {
    setAnchorEl(event.currentTarget);
  };

  const handleClose = () => {
    setAnchorEl(null);
  };

  useEffect(() => {
    // Scroll to the last tab whenever the tabs array changes (e.g., when a new tab is added)
    if (tabsRef.current) {
      const tabElements = tabsRef.current.querySelectorAll('.MuiTab-root');
      if (tabElements.length > 0) {
        const lastTab = tabElements[tabElements.length - 1];
        lastTab.scrollIntoView({
          behavior: 'smooth',
          block: 'nearest',
          inline: 'end',
        });
      }
    }
  }, [tabs.length]); // Dependency on the number of tabs

  const isDisableBackButton = useMemo(() => {
    if (selectedTab && navigationController[selectedTab?.tabId]?.hasBack)
      return false;
    if (selectedTab && !navigationController[selectedTab?.tabId]?.hasBack)
      return true;
    return false;
  }, [navigationController, selectedTab]);

  const setTabsToNav = (e) => {
    const { tabs, selectedTab, isNewTabWindow } = e.detail?.data;

    setTabs([...tabs]);
    setSelectedTab(!selectedTab ? null : { ...selectedTab });
    setIsNewTabWindow(isNewTabWindow);
  };

  useEffect(() => {
    subscribeToEvent('appsDevModeSetTabsToNav', setTabsToNav);

    return () => {
      unsubscribeFromEvent('appsDevModeSetTabsToNav', setTabsToNav);
    };
  }, []);

  return (
    <AppsNavBarParent
      sx={{
        position: 'relative',
        flexDirection: 'column',
        width: '59px',
        height: 'unset',
        maxHeight: '70vh',
        borderRadius: '0px 30px 30px 0px',
        padding: '10px',
      }}
    >
      <AppsNavBarLeft
        sx={{
          flexDirection: 'column',
        }}
      >
        <ButtonBase
          onClick={() => {
            executeEvent('devModeNavigateBack', selectedTab?.tabId);
          }}
          disabled={isDisableBackButton}
          sx={{
            opacity: !isDisableBackButton ? 1 : 0.1,
            cursor: !isDisableBackButton ? 'pointer' : 'default',
          }}
        >
          <NavBack />
        </ButtonBase>

        <Tabs
          orientation="vertical"
          ref={tabsRef}
          aria-label="basic tabs example"
          variant="scrollable" // Make tabs scrollable
          scrollButtons={true}
          sx={{
            '& .MuiTabs-indicator': {
              backgroundColor: theme.palette.text.primary,
            },
            maxHeight: `275px`, // Ensure the tabs container fits within the available space
            overflow: 'hidden', // Prevents overflow on small screens
          }}
        >
          {tabs?.map((tab) => (
            <Tab
              key={tab.tabId}
              label={
                <AppsDevModeTabComponent
                  isSelected={
                    tab?.tabId === selectedTab?.tabId && !isNewTabWindow
                  }
                  app={tab}
                />
              } // Pass custom component
              sx={{
                '&.Mui-selected': {
                  color: theme.palette.text.primary,
                },
                padding: '0px',
                margin: '0px',
                minWidth: '0px',
                width: '50px',
              }}
            />
          ))}
        </Tabs>
      </AppsNavBarLeft>

      {selectedTab && (
        <AppsNavBarRight
          sx={{
            gap: '10px',
            flexDirection: 'column',
          }}
        >
          <ButtonBase
            onClick={() => {
              setSelectedTab(null);
              executeEvent('devModeNewTabWindow', {});
            }}
          >
            <NavAdd
              style={{
                height: '40px',
                width: '40px',
              }}
            />
          </ButtonBase>

          <ButtonBase
            onClick={(e) => {
              if (selectedTab?.refreshFunc) {
                selectedTab.refreshFunc(selectedTab?.tabId);
              } else {
                executeEvent('refreshApp', {
                  tabId: selectedTab?.tabId,
                });
              }
            }}
          >
            <RefreshIcon
              sx={{
                color: theme.palette.text.primary,
                width: '40px',
                height: 'auto',
              }}
            />
          </ButtonBase>
        </AppsNavBarRight>
      )}
    </AppsNavBarParent>
  );
};