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* DeleteFormFields - Isolated field components for delete workflow
*
* @module dialogs/DeleteItemDialog/DeleteFormFields
* @description
* Individual form field components for the 4-step delete item workflow.
* Each field is isolated for easier testing, reuse, and composition.
*
* @enterprise
* - Single Responsibility: each component manages one field
* - Testable: can be tested independently with mock state
* - Reusable: can be composed into custom forms
* - Type-safe: all props are strictly typed
* - i18n-ready: all labels and messages are translated
*
* @components
* - SupplierSelectField: Step 1 - Choose supplier from dropdown
* - ItemSelectField: Step 2 - Search and autocomplete select item
* - DeletionReasonField: Step 3 - Choose predefined deletion reason
* - ItemInfoDisplay: Step 4 - Show item details for confirmation
*/
import {
Box,
FormControl,
InputLabel,
Select,
MenuItem,
Typography,
CircularProgress,
Alert,
Autocomplete,
TextField,
} from '@mui/material';
import { useTranslation } from 'react-i18next';
import type { UseDeleteItemDialogReturn } from './DeleteItemDialog.types';
/**
* SupplierSelectField - Step 1: Select supplier from dropdown
*
* @param state - Complete dialog state from useDeleteItemDialog hook
*
* @behavior
* - Shows loading spinner while fetching suppliers from API
* - Displays dropdown with all available suppliers
* - On selection: updates state.selectedSupplier (triggers item search reset)
* - On change: clears previously selected item and search query
*
* @visibility
* - Always visible in form view
* - First step that must be completed
* - Enables Step 2 (item selection) when completed
*
* @performance
* - Suppliers loaded once via useSuppliersQuery (5-minute cache)
*/
export function SupplierSelectField({ state }: { state: UseDeleteItemDialogReturn }) {
const { t } = useTranslation(['common', 'inventory']);
// Show loading state while suppliers are being fetched from API
if (state.suppliersQuery.isLoading) {
return (
<Box sx={{ display: 'flex', alignItems: 'center', gap: 1 }}>
<CircularProgress size={20} />
<Typography variant="body2" color="text.secondary">
{t('common:loading', 'Loading...')}
</Typography>
</Box>
);
}
return (
<FormControl fullWidth>
<InputLabel id="supplier-select-label">
{t('inventory:table.supplier', 'Supplier')}
</InputLabel>
<Select
labelId="supplier-select-label"
value={state.selectedSupplier?.id ?? ''}
onChange={(e) => {
// Find supplier by ID and update state
// Handles both string and numeric IDs via String comparison
const supplier = state.suppliersQuery.data?.find(
(s) => String(s.id) === String(e.target.value)
);
state.setSelectedSupplier(supplier ?? null);
}}
label={t('inventory:table.supplier', 'Supplier')}
>
{/* Render all suppliers as menu items for selection */}
{state.suppliersQuery.data?.map((supplier) => (
<MenuItem key={supplier.id} value={supplier.id}>
{supplier.label}
</MenuItem>
))}
</Select>
</FormControl>
);
}
/**
* ItemSelectField - Step 2: Search and select item via autocomplete
*
* @param state - Complete dialog state from useDeleteItemDialog hook
*
* @behavior
* - Disabled until supplier is selected (shows info alert)
* - Shows loading spinner while searching items
* - Autocomplete with debounced search (2+ characters required)
* - On selection: updates state.selectedItem, clears search query
* - On input change: updates state.itemQuery (triggers search via API)
*
* @visibility
* - Visible only after Step 1 (supplier) is completed
* - Conditional render: {state.selectedSupplier && (...)}
* - Enables Step 3 (reason) when item is selected
*
* @performance
* - Debounced search (350ms) via useDebounced hook
* - Minimal API calls: only when 2+ chars and supplier selected
* - Uses Autocomplete internal value management for efficiency
*/
export function ItemSelectField({ state }: { state: UseDeleteItemDialogReturn }) {
const { t } = useTranslation(['common', 'inventory']);
// Guard: cannot search items without selecting supplier first
if (!state.selectedSupplier) {
return (
<Alert severity="info">
{t('inventory:search.selectSupplierFirst', 'Select a supplier to enable search.')}
</Alert>
);
}
// Show loading state while API searches items matching query
if (state.itemsQuery.isLoading) {
return (
<Box sx={{ display: 'flex', alignItems: 'center', gap: 1 }}>
<CircularProgress size={20} />
<Typography variant="body2" color="text.secondary">
{t('common:loading', 'Loading...')}
</Typography>
</Box>
);
}
return (
<Autocomplete
key={state.selectedSupplier?.id}
disabled={!state.selectedSupplier}
options={state.itemsQuery.data ?? []}
getOptionLabel={(option) => option.name}
value={state.selectedItem}
onChange={(_e, value) => {
state.setSelectedItem(value);
// Clear search query after selection for clean slate
state.setItemQuery('');
}}
inputValue={state.itemQuery}
onInputChange={(_e, value) => state.setItemQuery(value)}
noOptionsText={
state.itemQuery.length < 2
? t('inventory:search.typeToSearch', 'Type at least 2 characters to search')
: t('inventory:search.noItemsFound', 'No items found for this search.')
}
renderInput={(params) => (
<TextField
{...params}
label={t('inventory:item', 'Item')}
placeholder={t('inventory:search.typeToSearchItems', 'Type to search items...')}
/>
)}
/>
);
}
/**
* DeletionReasonField - Step 3: Select predefined deletion reason
*
* @param state - Complete dialog state from useDeleteItemDialog hook
*
* @behavior
* - Dropdown menu with 6 predefined business reasons
* - On change: updates state.deletionReason
* - Required for audit trail and inventory accounting
*
* @visibility
* - Visible only after Step 2 (item) is completed
* - Conditional render: {state.selectedItem && (...)}
* - Enables Step 4 (preview) when reason selected
*
*/
export function DeletionReasonField({ state }: { state: UseDeleteItemDialogReturn }) {
const { t } = useTranslation(['inventory']);
return (
<FormControl fullWidth>
<InputLabel>
{t('inventory:deleteFlow.deletionReasonLabel', 'Deletion Reason')}
</InputLabel>
<Select
label={t('inventory:deleteFlow.deletionReasonLabel', 'Deletion Reason')}
value={state.deletionReason}
onChange={(e) => state.setDeletionReason(e.target.value)}
>
{/* Predefined deletion reasons with business descriptions */}
<MenuItem value="SCRAPPED">
{t('inventory:reasons.reasonScrapped', 'Scrapped - Quality control removal')}
</MenuItem>
<MenuItem value="DESTROYED">
{t('inventory:reasons.reasonDestroyed', 'Destroyed - Catastrophic loss')}
</MenuItem>
<MenuItem value="DAMAGED">
{t('inventory:reasons.reasonDamaged', 'Damaged - Quality hold')}
</MenuItem>
<MenuItem value="EXPIRED">
{t('inventory:reasons.reasonExpired', 'Expired - Expiration date breach')}
</MenuItem>
<MenuItem value="LOST">
{t('inventory:reasons.reasonLost', 'Lost - Inventory shrinkage')}
</MenuItem>
<MenuItem value="RETURNED_TO_SUPPLIER">
{t('inventory:reasons.reasonReturnedToSupplier', 'Returned to Supplier - Defective merchandise')}
</MenuItem>
</Select>
</FormControl>
);
}
/**
* ItemInfoDisplay - Step 4: Show item details for final confirmation
*
* @param state - Complete dialog state from useDeleteItemDialog hook
* @returns Item preview card or null if no item selected/loaded
*
* @behavior
* - Only renders when item is selected AND details are loaded
* - Shows: item name and on-hand quantity
* - Non-interactive: displays information for user verification
* - Helps user confirm they're deleting the correct item
*
* @visibility
* - Visible only after Step 2 (item) is completed
* - Only renders if itemDetailsQuery has data
* - Conditional render: {state.selectedItem && state.itemDetailsQuery.data && (...)}
*
* @styling
* - Light background (action.hover) to visually separate from form
* - Padding and border radius for readable presentation
* - Typography hierarchy: label → value for clarity
*/
export function ItemInfoDisplay({ state }: { state: UseDeleteItemDialogReturn }) {
const { t } = useTranslation(['inventory']);
// Guard: only render if item is selected and details are loaded
if (!state.selectedItem || !state.itemDetailsQuery.data) {
return null;
}
return (
<Box
sx={{
p: 1.5,
bgcolor: 'action.hover',
borderRadius: 1,
}}
>
{/* Item name section */}
<Typography variant="body2" color="text.secondary">
{t('inventory:table.name', 'Name')}
</Typography>
<Typography variant="body1" sx={{ fontWeight: 600 }}>
{state.itemDetailsQuery.data.name}
</Typography>
{/* Item on-hand quantity section */}
<Typography variant="body2" color="text.secondary" sx={{ mt: 1 }}>
{t('inventory:table.onHand', 'On-hand')}
</Typography>
<Typography variant="body1" sx={{ fontWeight: 600 }}>
{state.itemDetailsQuery.data.onHand}
</Typography>
</Box>
);
}
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