Readur/frontend/src/components/LanguageSelector/LanguageSelector.tsx

422 lines
15 KiB
TypeScript

import React, { useState, useEffect, useRef } from 'react'
import { CheckIcon, XMarkIcon } from '@heroicons/react/24/outline'
import { LanguageInfo } from '../../services/api'
import { useTheme } from '@mui/material/styles'
import { Box, Typography, Chip, Button, Paper, Divider, Popper, ClickAwayListener } from '@mui/material'
interface LanguageSelectorProps {
selectedLanguages: string[]
primaryLanguage?: string
onLanguagesChange: (languages: string[], primary?: string) => void
maxLanguages?: number
disabled?: boolean
showPrimarySelector?: boolean
className?: string
}
// Common languages with display names
const COMMON_LANGUAGES: LanguageInfo[] = [
{ code: 'eng', name: 'English', installed: true },
{ code: 'spa', name: 'Spanish', installed: true },
{ code: 'fra', name: 'French', installed: true },
{ code: 'deu', name: 'German', installed: true },
{ code: 'ita', name: 'Italian', installed: true },
{ code: 'por', name: 'Portuguese', installed: true },
{ code: 'rus', name: 'Russian', installed: true },
{ code: 'chi_sim', name: 'Chinese (Simplified)', installed: true },
{ code: 'chi_tra', name: 'Chinese (Traditional)', installed: true },
{ code: 'jpn', name: 'Japanese', installed: true },
{ code: 'kor', name: 'Korean', installed: true },
{ code: 'ara', name: 'Arabic', installed: true },
{ code: 'hin', name: 'Hindi', installed: true },
{ code: 'nld', name: 'Dutch', installed: true },
{ code: 'swe', name: 'Swedish', installed: true },
{ code: 'nor', name: 'Norwegian', installed: true },
{ code: 'dan', name: 'Danish', installed: true },
{ code: 'fin', name: 'Finnish', installed: true },
{ code: 'pol', name: 'Polish', installed: true },
{ code: 'ces', name: 'Czech', installed: true },
{ code: 'hun', name: 'Hungarian', installed: true },
{ code: 'tur', name: 'Turkish', installed: true },
{ code: 'tha', name: 'Thai', installed: true },
{ code: 'vie', name: 'Vietnamese', installed: true },
]
function LanguageSelector({
selectedLanguages,
primaryLanguage,
onLanguagesChange,
maxLanguages = 4,
disabled = false,
showPrimarySelector = true,
className = '',
}: LanguageSelectorProps) {
const theme = useTheme()
const [availableLanguages, setAvailableLanguages] = useState<LanguageInfo[]>(COMMON_LANGUAGES)
const [isOpen, setIsOpen] = useState(false)
const anchorRef = useRef<HTMLButtonElement>(null)
// Auto-set primary language to first selected if not specified
const effectivePrimary = primaryLanguage || selectedLanguages[0] || ''
const handleLanguageToggle = (languageCode: string) => {
if (disabled) return
let newLanguages: string[]
let newPrimary = effectivePrimary
if (selectedLanguages.includes(languageCode)) {
// Remove language
newLanguages = selectedLanguages.filter(lang => lang !== languageCode)
// If removing the primary language, set new primary to first remaining language
if (languageCode === effectivePrimary && newLanguages.length > 0) {
newPrimary = newLanguages[0]
} else if (newLanguages.length === 0) {
newPrimary = ''
}
} else {
// Add language (check max limit)
if (selectedLanguages.length >= maxLanguages) {
return
}
newLanguages = [...selectedLanguages, languageCode]
// If this is the first language, make it primary
if (newLanguages.length === 1) {
newPrimary = languageCode
}
}
onLanguagesChange(newLanguages, newPrimary)
}
const handlePrimaryChange = (languageCode: string) => {
if (disabled || !selectedLanguages.includes(languageCode)) return
onLanguagesChange(selectedLanguages, languageCode)
}
const removeLanguage = (languageCode: string) => {
handleLanguageToggle(languageCode)
}
const handleClose = () => {
setIsOpen(false)
}
const getLanguageName = (code: string) => {
const language = availableLanguages.find(lang => lang.code === code)
return language?.name || code
}
return (
<Box sx={{ position: 'relative' }} className={className}>
{/* Selected Languages Display */}
<Box sx={{ mb: 3 }}>
<Typography variant="body2" sx={{
fontWeight: 500,
color: 'text.primary',
mb: 2
}}>
OCR Languages {selectedLanguages.length > 0 && `(${selectedLanguages.length}/${maxLanguages})`}
</Typography>
{selectedLanguages.length > 0 ? (
<Box sx={{ display: 'flex', flexWrap: 'wrap', gap: 1 }}>
{selectedLanguages.map((langCode) => (
<Chip
key={langCode}
label={
<Box sx={{ display: 'flex', alignItems: 'center' }}>
<span>{getLanguageName(langCode)}</span>
{langCode === effectivePrimary && (
<Typography variant="caption" sx={{
ml: 1,
fontWeight: 'bold',
color: 'primary.main'
}}>
(Primary)
</Typography>
)}
</Box>
}
variant={langCode === effectivePrimary ? 'filled' : 'outlined'}
color={langCode === effectivePrimary ? 'primary' : 'default'}
size="small"
onDelete={!disabled ? () => removeLanguage(langCode) : undefined}
deleteIcon={<XMarkIcon style={{ width: 16, height: 16 }} />}
sx={{
'& .MuiChip-deleteIcon': {
color: 'text.secondary',
'&:hover': {
color: 'text.primary',
},
},
}}
/>
))}
</Box>
) : (
<Typography variant="body2" sx={{
color: 'text.secondary',
fontStyle: 'italic'
}}>
No languages selected. Documents will use default OCR language.
</Typography>
)}
</Box>
{/* Language Selector Button */}
{!disabled && (
<Button
ref={anchorRef}
variant="outlined"
onClick={() => setIsOpen(!isOpen)}
fullWidth
sx={{
justifyContent: 'flex-start',
textTransform: 'none',
color: 'text.secondary',
borderColor: 'divider',
'&:hover': {
backgroundColor: 'action.hover',
borderColor: 'primary.main',
},
}}
>
{selectedLanguages.length === 0
? 'Select OCR languages...'
: `Add more languages (${maxLanguages - selectedLanguages.length} remaining)`
}
</Button>
)}
{/* Dropdown Panel */}
<Popper
open={isOpen && !disabled}
anchorEl={anchorRef.current}
placement="bottom-start"
sx={{ zIndex: 1300 }}
modifiers={[
{
name: 'offset',
options: {
offset: [0, 8],
},
},
]}
>
<ClickAwayListener onClickAway={handleClose}>
<Paper
elevation={8}
sx={{
width: anchorRef.current?.offsetWidth || 300,
maxWidth: 500,
maxHeight: '60vh',
overflow: 'auto',
borderRadius: 2,
'&::-webkit-scrollbar': {
width: '6px',
},
'&::-webkit-scrollbar-track': {
background: 'transparent',
},
'&::-webkit-scrollbar-thumb': {
background: 'divider',
borderRadius: '3px',
'&:hover': {
background: 'text.disabled',
},
},
}}
>
<Box sx={{ p: 3 }}>
<Typography variant="subtitle2" sx={{
color: 'text.secondary',
mb: 2,
textTransform: 'uppercase',
letterSpacing: 1,
fontWeight: 600,
fontSize: '0.75rem'
}}>
Available Languages
</Typography>
<Box sx={{ display: 'flex', flexDirection: 'column', gap: 1 }}>
{availableLanguages
.filter(lang => lang.installed)
.map((language) => {
const isSelected = selectedLanguages.includes(language.code)
const isPrimary = language.code === effectivePrimary
const canSelect = !isSelected && selectedLanguages.length < maxLanguages
return (
<Box
key={language.code}
sx={{
display: 'flex',
alignItems: 'center',
justifyContent: 'space-between',
p: 2,
borderRadius: 1.5,
backgroundColor: isSelected
? (theme) => theme.palette.mode === 'dark'
? 'rgba(144, 202, 249, 0.16)'
: 'rgba(25, 118, 210, 0.08)'
: 'transparent',
cursor: canSelect || isSelected ? 'pointer' : 'not-allowed',
opacity: !canSelect && !isSelected ? 0.5 : 1,
transition: 'all 0.2s ease-in-out',
'&:hover': canSelect ? {
backgroundColor: (theme) => theme.palette.mode === 'dark'
? 'rgba(255, 255, 255, 0.05)'
: 'rgba(0, 0, 0, 0.04)',
transform: 'translateY(-1px)',
} : {},
}}
>
<Box
sx={{
display: 'flex',
alignItems: 'center',
cursor: canSelect || isSelected ? 'pointer' : 'not-allowed',
gap: 2,
}}
onClick={() => canSelect || isSelected ? handleLanguageToggle(language.code) : undefined}
>
<Box
sx={{
width: 22,
height: 22,
border: 2,
borderRadius: 1,
borderColor: isSelected ? 'primary.main' : 'divider',
backgroundColor: isSelected ? 'primary.main' : 'transparent',
display: 'flex',
alignItems: 'center',
justifyContent: 'center',
transition: 'all 0.15s ease-in-out',
'&:hover': canSelect && !isSelected ? {
borderColor: 'primary.light',
} : {},
}}
>
{isSelected && (
<CheckIcon
style={{
width: 14,
height: 14,
color: theme.palette.primary.contrastText,
}}
/>
)}
</Box>
<Typography
variant="body2"
sx={{
fontWeight: isSelected ? 500 : 400,
color: isSelected ? 'primary.dark' : 'text.primary',
}}
>
{language.name}
</Typography>
{isPrimary && (
<Chip
label="PRIMARY"
size="small"
color="primary"
sx={{
height: 20,
fontSize: '0.65rem',
fontWeight: 'bold',
}}
/>
)}
</Box>
{/* Primary selector */}
{isSelected && showPrimarySelector && selectedLanguages.length > 1 && (
<Button
size="small"
variant={isPrimary ? "contained" : "outlined"}
color="primary"
onClick={() => handlePrimaryChange(language.code)}
disabled={isPrimary}
sx={{
fontSize: '0.7rem',
py: 0.5,
px: 1,
minWidth: 'auto',
textTransform: 'none',
}}
>
{isPrimary ? 'Primary' : 'Set Primary'}
</Button>
)}
</Box>
)
})}
</Box>
{selectedLanguages.length >= maxLanguages && (
<Box sx={{
mt: 3,
p: 2,
backgroundColor: (theme) => theme.palette.mode === 'dark'
? 'rgba(255, 193, 7, 0.1)'
: 'rgba(255, 193, 7, 0.08)',
border: '1px solid',
borderColor: (theme) => theme.palette.mode === 'dark'
? 'rgba(255, 193, 7, 0.3)'
: 'rgba(255, 193, 7, 0.3)',
borderRadius: 2,
}}>
<Typography variant="body2" sx={{
color: (theme) => theme.palette.mode === 'dark'
? '#ffb74d'
: '#e65100',
fontWeight: 500,
}}>
Maximum {maxLanguages} languages allowed for optimal performance.
</Typography>
</Box>
)}
</Box>
<Divider sx={{ borderColor: 'divider' }} />
<Box sx={{ p: 2.5 }}>
<Button
variant="text"
onClick={handleClose}
fullWidth
sx={{
textTransform: 'none',
color: 'text.secondary',
py: 1.5,
fontSize: '0.875rem',
fontWeight: 500,
'&:hover': {
color: 'text.primary',
backgroundColor: 'action.hover',
},
}}
>
Close
</Button>
</Box>
</Paper>
</ClickAwayListener>
</Popper>
{/* Help Text */}
{selectedLanguages.length > 1 && (
<Box sx={{ mt: 2 }}>
<Typography variant="caption" sx={{ color: 'text.secondary' }}>
<strong>Primary language</strong> is processed first for better accuracy.
Multiple languages help with mixed-language documents.
</Typography>
</Box>
)}
</Box>
)
}
export default LanguageSelector