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* Filter Builder Panel
* Collapsible panel for building advanced filter expressions on collection records
*/
import { useState, useCallback } from 'react';
import { Filter, Plus, X, ChevronDown, ChevronUp } from 'lucide-react';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Badge } from '@/components/ui/badge';
import {
Select,
SelectContent,
SelectItem,
SelectTrigger,
SelectValue,
} from '@/components/ui/select';
import type { FieldDefinition } from '@/services/collections.service';
// ── Types ────────────────────────────────────────────────────────────────────
type Operator = '=' | '!=' | '>' | '>=' | '<' | '<=' | '~' | '!~' | 'null' | '!null';
export interface FilterRow {
id: string;
field: string;
operator: Operator;
value: string;
}
export interface FilterBuilderPanelProps {
schema: FieldDefinition[];
appliedRows: FilterRow[];
onApply: (filterExpression: string, rows: FilterRow[]) => void;
onClear: () => void;
onRemovePill: (id: string) => void;
}
// ── Operator definitions ──────────────────────────────────────────────────────
interface OperatorDef {
value: Operator;
label: string;
}
const TEXT_OPERATORS: OperatorDef[] = [
{ value: '=', label: 'equals' },
{ value: '!=', label: 'not equals' },
{ value: '~', label: 'contains' },
{ value: '!~', label: 'not contains' },
{ value: 'null', label: 'is empty' },
{ value: '!null', label: 'is not empty' },
];
const NUMBER_OPERATORS: OperatorDef[] = [
{ value: '=', label: 'equals' },
{ value: '!=', label: 'not equals' },
{ value: '>', label: 'greater than' },
{ value: '>=', label: 'greater than or equal' },
{ value: '<', label: 'less than' },
{ value: '<=', label: 'less than or equal' },
{ value: 'null', label: 'is empty' },
{ value: '!null', label: 'is not empty' },
];
const BOOLEAN_OPERATORS: OperatorDef[] = [
{ value: '=', label: 'equals' },
{ value: '!=', label: 'not equals' },
];
const REFERENCE_OPERATORS: OperatorDef[] = [
{ value: '=', label: 'equals' },
{ value: '!=', label: 'not equals' },
{ value: 'null', label: 'is empty' },
{ value: '!null', label: 'is not empty' },
];
const NULL_ONLY_OPERATORS: OperatorDef[] = [
{ value: 'null', label: 'is empty' },
{ value: '!null', label: 'is not empty' },
];
function getOperatorsForType(fieldType: string): OperatorDef[] {
switch (fieldType) {
case 'text':
case 'email':
case 'url':
return TEXT_OPERATORS;
case 'number':
return NUMBER_OPERATORS;
case 'boolean':
return BOOLEAN_OPERATORS;
case 'date':
case 'datetime':
return NUMBER_OPERATORS; // same comparisons as number
case 'reference':
return REFERENCE_OPERATORS;
case 'file':
case 'json':
return NULL_ONLY_OPERATORS;
default:
return TEXT_OPERATORS;
}
}
// ── System fields always available for filtering ──────────────────────────────
const SYSTEM_FIELDS: FieldDefinition[] = [
{ name: 'id', type: 'text' },
{ name: 'created_at', type: 'datetime' },
{ name: 'updated_at', type: 'datetime' },
{ name: 'created_by', type: 'text' },
{ name: 'updated_by', type: 'text' },
];
// ── Filter expression compiler ────────────────────────────────────────────────
function escapeValue(value: string): string {
return value.replace(/\\/g, '\\\\').replace(/"/g, '\\"');
}
function compileRow(row: FilterRow, allFields: FieldDefinition[]): string | null {
const { field, operator, value } = row;
Iif (!field || !operator) return null;
const fieldDef = allFields.find((f) => f.name === field);
const fieldType = fieldDef?.type ?? 'text';
Iif (operator === 'null') return `${field} IS NULL`;
Iif (operator === '!null') return `${field} IS NOT NULL`;
Iif (!value.trim()) return null;
switch (fieldType) {
case 'number':
return `${field} ${operator} ${value}`;
case 'boolean':
return `${field} ${operator} ${value.toLowerCase()}`;
case 'date':
case 'datetime': {
const escaped = escapeValue(value);
return `${field} ${operator} "${escaped}"`;
}
case 'text':
case 'email':
case 'url':
default: {
Iif (operator === '~') return `${field} ~ "%${escapeValue(value)}%"`;
Iif (operator === '!~') return `${field} !~ "%${escapeValue(value)}%"`;
return `${field} ${operator} "${escapeValue(value)}"`;
}
}
}
export function compileFilterExpression(rows: FilterRow[], allFields: FieldDefinition[]): string {
const parts = rows.map((r) => compileRow(r, allFields)).filter(Boolean) as string[];
return parts.join(' && ');
}
// ── Pill label builder ────────────────────────────────────────────────────────
function pillLabel(row: FilterRow): string {
Iif (row.operator === 'null') return `${row.field} is empty`;
Iif (row.operator === '!null') return `${row.field} is not empty`;
Iif (row.operator === '~') return `${row.field} contains "${row.value}"`;
Iif (row.operator === '!~') return `${row.field} not contains "${row.value}"`;
return `${row.field} ${row.operator} "${row.value}"`;
}
// ── Value input by field type ─────────────────────────────────────────────────
interface ValueInputProps {
fieldType: string;
operator: Operator;
value: string;
onChange: (v: string) => void;
}
function ValueInput({ fieldType, operator, value, onChange }: ValueInputProps) {
Iif (operator === 'null' || operator === '!null') {
return <div className="flex-1 h-9" />; // spacer
}
Iif (fieldType === 'boolean') {
return (
<Select value={value} onValueChange={onChange}>
<SelectTrigger className="flex-1 h-9">
<SelectValue placeholder="Select value" />
</SelectTrigger>
<SelectContent>
<SelectItem value="true">true</SelectItem>
<SelectItem value="false">false</SelectItem>
</SelectContent>
</Select>
);
}
Iif (fieldType === 'number') {
return (
<Input
type="number"
className="flex-1 h-9"
placeholder="Value"
value={value}
onChange={(e) => onChange(e.target.value)}
/>
);
}
Iif (fieldType === 'date') {
return (
<Input
type="date"
className="flex-1 h-9"
value={value}
onChange={(e) => onChange(e.target.value)}
/>
);
}
Iif (fieldType === 'datetime') {
return (
<Input
type="datetime-local"
className="flex-1 h-9"
value={value}
onChange={(e) => onChange(e.target.value)}
/>
);
}
return (
<Input
type="text"
className="flex-1 h-9"
placeholder="Value"
value={value}
onChange={(e) => onChange(e.target.value)}
/>
);
}
// ── Main component ────────────────────────────────────────────────────────────
let rowCounter = 0;
function newRow(): FilterRow {
return { id: `row-${++rowCounter}`, field: '', operator: '=', value: '' };
}
export default function FilterBuilderPanel({
schema,
appliedRows,
onApply,
onClear,
onRemovePill,
}: FilterBuilderPanelProps) {
const [isOpen, setIsOpen] = useState(false);
const [draftRows, setDraftRows] = useState<FilterRow[]>([]);
const allFields = [...schema, ...SYSTEM_FIELDS];
const addRow = () => setDraftRows((prev) => [...prev, newRow()]);
const removeRow = (id: string) =>
setDraftRows((prev) => prev.filter((r) => r.id !== id));
const updateRow = useCallback((id: string, patch: Partial<FilterRow>) => {
setDraftRows((prev) =>
prev.map((r) => (r.id === id ? { ...r, ...patch } : r)),
);
}, []);
const handleApply = () => {
const validRows = draftRows.filter(
(r) => r.field && (r.operator === 'null' || r.operator === '!null' || r.value.trim()),
);
const expression = compileFilterExpression(validRows, allFields);
onApply(expression, validRows);
setIsOpen(false);
};
const handleClear = () => {
setDraftRows([]);
onClear();
setIsOpen(false);
};
const handleToggle = () => {
if (!isOpen) {
// Pre-populate draft with applied rows on open
setDraftRows(appliedRows.length ? [...appliedRows] : []);
}
setIsOpen((v) => !v);
};
const activeCount = appliedRows.length;
return (
<div className="space-y-2">
{/* Toggle Button */}
<div className="flex items-center gap-2">
<Button
type="button"
variant="outline"
size="sm"
onClick={handleToggle}
className="gap-2"
>
<Filter className="h-4 w-4" />
Filters
{activeCount > 0 && (
<Badge variant="secondary" className="ml-1 h-5 px-1.5 text-xs">
{activeCount}
</Badge>
)}
{isOpen ? (
<ChevronUp className="h-3 w-3 ml-1" />
) : (
<ChevronDown className="h-3 w-3 ml-1" />
)}
</Button>
{activeCount > 0 && !isOpen && (
<Button
type="button"
variant="ghost"
size="sm"
className="text-muted-foreground h-8 px-2 text-xs"
onClick={handleClear}
>
Clear all
</Button>
)}
</div>
{/* Collapsible Panel */}
{isOpen && (
<div className="border rounded-lg p-4 space-y-3 bg-muted/20">
{draftRows.length === 0 && (
<p className="text-sm text-muted-foreground">
No filters added. Click "Add Filter" to start filtering records.
</p>
)}
{draftRows.map((row) => {
const fieldDef = allFields.find((f) => f.name === row.field);
const fieldType = fieldDef?.type ?? 'text';
const operators = getOperatorsForType(fieldType);
return (
<div key={row.id} className="flex items-center gap-2">
{/* Field selector */}
<Select
value={row.field}
onValueChange={(v) =>
updateRow(row.id, {
field: v,
operator: getOperatorsForType(
allFields.find((f) => f.name === v)?.type ?? 'text',
)[0].value,
value: '',
})
}
>
<SelectTrigger className="w-40 h-9">
<SelectValue placeholder="Field" />
</SelectTrigger>
<SelectContent>
{schema.length > 0 && (
<>
<div className="px-2 py-1 text-xs font-medium text-muted-foreground uppercase tracking-wide">
Fields
</div>
{schema.map((f) => (
<SelectItem key={f.name} value={f.name}>
{f.name}
</SelectItem>
))}
<div className="px-2 py-1 text-xs font-medium text-muted-foreground uppercase tracking-wide mt-1">
System
</div>
</>
)}
{SYSTEM_FIELDS.map((f) => (
<SelectItem key={f.name} value={f.name}>
{f.name}
</SelectItem>
))}
</SelectContent>
</Select>
{/* Operator selector */}
<Select
value={row.operator}
onValueChange={(v) =>
updateRow(row.id, { operator: v as Operator, value: '' })
}
disabled={!row.field}
>
<SelectTrigger className="w-44 h-9">
<SelectValue placeholder="Operator" />
</SelectTrigger>
<SelectContent>
{operators.map((op) => (
<SelectItem key={op.value} value={op.value}>
{op.label}
</SelectItem>
))}
</SelectContent>
</Select>
{/* Value input */}
<ValueInput
fieldType={fieldType}
operator={row.operator}
value={row.value}
onChange={(v) => updateRow(row.id, { value: v })}
/>
{/* Remove button */}
<Button
type="button"
variant="ghost"
size="icon"
className="h-9 w-9 shrink-0 text-muted-foreground hover:text-destructive"
onClick={() => removeRow(row.id)}
>
<X className="h-4 w-4" />
</Button>
</div>
);
})}
{/* Actions */}
<div className="flex items-center gap-2 pt-1">
<Button
type="button"
variant="outline"
size="sm"
onClick={addRow}
className="gap-1"
>
<Plus className="h-3 w-3" />
Add Filter
</Button>
<div className="flex-1" />
<Button
type="button"
variant="ghost"
size="sm"
onClick={handleClear}
className="text-muted-foreground"
>
Clear All
</Button>
<Button
type="button"
size="sm"
onClick={handleApply}
disabled={draftRows.length === 0}
>
Apply Filters
</Button>
</div>
</div>
)}
{/* Filter Pills */}
{appliedRows.length > 0 && (
<div className="flex flex-wrap gap-1.5">
{appliedRows.map((row) => (
<Badge
key={row.id}
variant="secondary"
className="gap-1 pr-1 font-normal text-xs"
>
<span>{pillLabel(row)}</span>
<button
type="button"
className="ml-0.5 rounded-sm hover:bg-muted-foreground/20 p-0.5"
onClick={() => onRemovePill(row.id)}
aria-label={`Remove filter: ${pillLabel(row)}`}
>
<X className="h-3 w-3" />
</button>
</Badge>
))}
</div>
)}
</div>
);
}
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