'use client'
import { useState, useEffect } from 'react'
import { Box, Paper, Typography, Tabs, Tab, IconButton, useMediaQuery, useTheme, TextField, Button } from '@mui/material'
import { Close, Bookmark, BookmarkBorder } from '@mui/icons-material'
import { BibleVerse } from '@/types'

interface VersDetailsPanelProps {
  verse: BibleVerse | null
  isOpen: boolean
  onClose: () => void
  isBookmarked: boolean
  onToggleBookmark: () => void
  onAddNote: (note: string) => void
}

export function VersDetailsPanel({
  verse,
  isOpen,
  onClose,
  isBookmarked,
  onToggleBookmark,
  onAddNote,
}: VersDetailsPanelProps) {
  const theme = useTheme()
  const isMobile = useMediaQuery(theme.breakpoints.down('sm'))
  const [tabValue, setTabValue] = useState(0)
  const [noteText, setNoteText] = useState('')

  // Reset to Notes tab when verse changes
  useEffect(() => {
    setTabValue(0)
  }, [verse?.id])

  if (!verse || !isOpen) return null

  const handleAddNote = () => {
    if (noteText.trim()) {
      onAddNote(noteText)
      setNoteText('')
    }
  }

  const PanelContent = (
    <Box sx={{ p: 2 }}>
      {/* Verse Header */}
      <Box sx={{ mb: 2, display: 'flex', justifyContent: 'space-between', alignItems: 'start' }}>
        <Typography variant="subtitle1" fontWeight={600} id="verse-details-header">
          {verse.chapter?.book?.name} {verse.chapter?.chapterNum}:{verse.verseNum}
        </Typography>
        <IconButton
          size="small"
          onClick={onClose}
          aria-label="Close verse details"
        >
          <Close />
        </IconButton>
      </Box>

      {/* Verse Text */}
      <Paper sx={{ p: 2, mb: 2, bgcolor: 'grey.100' }} elevation={0}>
        <Typography variant="body2" sx={{ mb: 1, fontStyle: 'italic' }}>
          {verse.text}
        </Typography>
      </Paper>

      {/* Bookmark Button */}
      <Box sx={{ mb: 2 }}>
        <Button
          aria-label={isBookmarked ? 'Remove bookmark' : 'Add bookmark'}
          startIcon={isBookmarked ? <Bookmark /> : <BookmarkBorder />}
          onClick={onToggleBookmark}
          variant={isBookmarked ? 'contained' : 'outlined'}
          size="small"
          fullWidth={isMobile}
        >
          {isBookmarked ? 'Bookmarked' : 'Bookmark'}
        </Button>
      </Box>

      {/* Tabs */}
      <Tabs
        value={tabValue}
        onChange={(_, newValue) => setTabValue(newValue)}
        variant={isMobile ? 'fullWidth' : 'standard'}
        sx={{ borderBottom: 1, borderColor: 'divider' }}
      >
        <Tab label="Notes" />
        <Tab label="Highlights" />
        <Tab label="References" />
      </Tabs>

      {/* Tab Content */}
      <Box sx={{ pt: 2 }}>
        {tabValue === 0 && (
          <Box>
            <TextField
              fullWidth
              multiline
              rows={3}
              placeholder="Add a note..."
              aria-label="Note text"
              helperText={`${noteText.length}/500 characters`}
              inputProps={{ maxLength: 500 }}
              value={noteText}
              onChange={(e) => setNoteText(e.target.value)}
              size="small"
              sx={{ mb: 1 }}
            />
            <Button
              variant="contained"
              size="small"
              onClick={handleAddNote}
              disabled={!noteText.trim()}
            >
              Save Note
            </Button>
          </Box>
        )}

        {tabValue === 1 && (
          <Typography variant="body2" color="text.secondary">
            Highlight colors coming soon
          </Typography>
        )}

        {tabValue === 2 && (
          <Typography variant="body2" color="text.secondary">
            Cross-references coming soon
          </Typography>
        )}
      </Box>
    </Box>
  )

  if (isMobile) {
    return (
      <Box
        role="dialog"
        aria-modal="true"
        aria-labelledby="verse-details-header"
        sx={{
          position: 'fixed',
          bottom: 0,
          left: 0,
          right: 0,
          zIndex: 100,
          maxHeight: '70vh',
          backgroundColor: 'white',
          borderTopLeftRadius: 16,
          borderTopRightRadius: 16,
          boxShadow: '0 -4px 20px rgba(0,0,0,0.1)',
          overflow: 'auto',
        }}
      >
        {PanelContent}
      </Box>
    )
  }

  return (
    <Paper
      sx={{
        position: 'fixed',
        right: 0,
        top: 0,
        bottom: 0,
        width: 350,
        zIndex: 100,
        borderRadius: 0,
        boxShadow: '-4px 0 20px rgba(0,0,0,0.1)',
        overflow: 'auto',
        backgroundColor: 'white',
      }}
    >
      {PanelContent}
    </Paper>
  )
}