import { MemoryRouter as Router, Routes, Route } from 'react-router-dom';
import { useEffect, useState } from 'react';
import { Provider } from 'react-redux';
import Dialog from '@mui/material/Dialog';

import { ThemeProvider, createTheme } from '@mui/material/styles';
import DialogTitle from '@mui/material/DialogTitle';
import DialogContent from '@mui/material/DialogContent';
import DialogActions from '@mui/material/DialogActions';
// import 'tailwindcss/tailwind.css';
import './App.css';
import ClipList from './components/ClipList';
import { useAppDispatch, useAppSelector } from './hooks';
import { store } from '../redux/main';
import { useNavigate } from 'react-router-dom';
import SettingsPage from './Settings';
import apiFetch from './api';

function MainPage() {
  const dispatch = useAppDispatch();
  const collections = useAppSelector((state) =>
    state.collections.map((col) => col.name),
  );
  const [selectedCollection, setSelectedCollection] = useState<string>(
    collections[0] || 'Uncategorized',
  );
  const [newCollectionOpen, setNewCollectionOpen] = useState(false);
  const [newCollectionName, setNewCollectionName] = useState<string>('');
  const navigate = useNavigate();

  useEffect(() => {
    const fetchMetadata = async () => {
      try {
        const response = await apiFetch('meta');
        const data = await response.json();
        dispatch({ type: 'metadata/setAllData', payload: data });
      } catch (error) {
        console.error('Error fetching metadata:', error);
      }
    };
    fetchMetadata();
    const intervalId = setInterval(fetchMetadata, 5000);
    return () => clearInterval(intervalId);
  }, [dispatch]);

  useEffect(() => {
    // Update selected collection if collections change
    if (collections.length > 0 && !collections.includes(selectedCollection)) {
      setSelectedCollection(collections[0]);
    }
  }, [collections, selectedCollection]);

  const handleNewCollectionSave = () => {
    if (
      newCollectionName.trim() &&
      !collections.includes(newCollectionName.trim())
    ) {
      dispatch({
        type: 'metadata/addCollection',
        payload: newCollectionName.trim(),
      });
      setSelectedCollection(newCollectionName.trim());
      fetch('http://localhost:5010/meta/collections/add', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ name: newCollectionName.trim() }),
      })
        .then((res) => res.json())
        .catch((err) => console.error('Error creating collection:', err));
    }
    setNewCollectionOpen(false);
    setNewCollectionName('');
  };

  return (
    <div className="min-h-screen min-w-screen bg-midnight text-offwhite relative">
      {/* Left Nav Bar - sticky */}
      <Dialog
        open={newCollectionOpen}
        onClose={() => setNewCollectionOpen(false)}
        slotProps={{
          paper: { sx: { backgroundColor: '#1a1a1a', color: 'white' } },
        }}
      >
        <DialogTitle>Edit Clip Name</DialogTitle>
        <DialogContent>
          <input
            autoFocus
            className="font-bold text-lg bg-transparent outline-none border-b border-plum focus:border-plumDark text-white mb-1 w-full text-center"
            type="text"
            value={newCollectionName}
            onChange={(e) => setNewCollectionName(e.target.value)}
            onKeyDown={(e) => {
              if (e.key === 'Enter') handleNewCollectionSave();
            }}
            aria-label="New collection name"
          />
        </DialogContent>
        <DialogActions>
          <button
            type="button"
            onClick={() => {
              setNewCollectionOpen(false);
              setNewCollectionName('');
            }}
            className="bg-plum hover:bg-plumDark text-white font-bold h-10 px-4 rounded-md"
          >
            Cancel
          </button>
          <button
            type="button"
            onClick={handleNewCollectionSave}
            className="bg-plum hover:bg-plumDark text-white font-bold h-10 px-4 rounded-md"
          >
            Save
          </button>
        </DialogActions>
      </Dialog>
      <nav
        className="w-48 h-screen sticky top-0 left-0 border-r border-neutral-700 bg-midnight flex flex-col p-2"
        style={{ position: 'absolute', top: 0, left: 0 }}
      >
        <div className="p-4 font-bold text-lg">Collections</div>
        <li>
          <button
            type="button"
            className="w-full rounded text-left px-4 py-2 mb-2 bg-plumDark text-offwhite font-semibold hover:bg-plum"
            onClick={() => setNewCollectionOpen(true)}
          >
            + Create Collection
          </button>
        </li>
        <ul className="flex-1 overflow-y-auto">
          {collections.map((col) => (
            <li key={col}>
              <button
                type="button"
                className={`w-full rounded text-left px-4 py-2 mt-2 hover:bg-plumDark ${selectedCollection === col ? 'bg-plum text-offwhite font-semibold' : 'text-offwhite'}`}
                onClick={() => setSelectedCollection(col)}
              >
                {col}
              </button>
            </li>
          ))}
        </ul>
        {/* Settings Button at Bottom Left */}
        <div className="mt-auto mb-2">
          <button
            type="button"
            className="w-full rounded px-4 py-2 bg-neutral-800 text-offwhite hover:bg-plumDark text-left"
            style={{
              position: 'absolute',
              bottom: 16,
              left: 8,
              width: 'calc(100% - 16px)',
            }}
            onClick={() => navigate('/settings')}
          >
            ⚙️ Settings
          </button>
        </div>
      </nav>
      {/* Main Content */}
      <div
        className="absolute top-0 ml-[12rem] w-[calc(100%-12rem)] h-screen overflow-y-auto p-4"
        // style={{ left: '12rem', width: 'calc(100% - 12rem)' }}
      >
        <ClipList collection={selectedCollection} />
      </div>
    </div>
  );
}

export default function App() {
  const theme = createTheme({
    colorSchemes: {
      light: false,
      dark: {
        palette: {
          primary: {
            main: '#6e44ba', // plum
            dark: '#6e44ba', // plum
            contrastText: '#ffffff',
          },
          secondary: {
            main: '#4f3186', // plumDark
            dark: '#4f3186', // plumDark
            contrastText: '#ffffff',
          },
        },
      },
    },
    // colorSchemes: {
    //   light: false,
    //   dark: true,
    // },
  });
  return (
    <Provider store={store}>
      <ThemeProvider theme={theme}>
        <Router>
          <Routes>
            <Route path="/" element={<MainPage />} />
            <Route path="/settings" element={<SettingsPage />} />
          </Routes>
        </Router>
      </ThemeProvider>
    </Provider>
  );
}