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import {
ColumnFiltersState,
SortingState,
PaginationState,
GroupingState,
ColumnDef
} from "@tanstack/react-table";
import {
SQL,
and,
or,
eq,
ilike,
gt,
lt,
gte,
lte,
inArray,
asc,
desc,
getTableColumns,
} from "drizzle-orm";
import { PgTable, PgView, PgColumn } from "drizzle-orm/pg-core";
// Helper to detect if value is empty or undefined
const isEmpty = (value: any) => value === undefined || value === null || value === "";
export interface DrizzleTableState {
sorting?: SortingState;
columnFilters?: ColumnFiltersState;
globalFilter?: string;
pagination?: PaginationState;
grouping?: GroupingState;
}
export class DrizzleTableAdapter<TData> {
private columnMap: Map<string, PgColumn>;
constructor(
private table: PgTable | PgView,
private columns: ColumnDef<TData, any>[]
) {
// Create a map of accessorKey -> Drizzle Column for fast lookup
this.columnMap = new Map();
// @ts-ignore - getTableColumns works on views in newer drizzle versions or we can cast
const drizzleColumns = getTableColumns(table as any);
columns.forEach(col => {
// We currently only support accessorKey which maps directly to a DB column
if ('accessorKey' in col && typeof col.accessorKey === 'string') {
const dbCol = drizzleColumns[col.accessorKey];
if (dbCol) {
this.columnMap.set(col.accessorKey, dbCol);
}
}
});
}
private getColumn(columnId: string): PgColumn | undefined {
return this.columnMap.get(columnId);
}
/**
* Build the WHERE clause based on column filters and global filter
*/
getWhere(columnFilters?: ColumnFiltersState, globalFilter?: string): SQL | undefined {
const conditions: SQL[] = [];
// 1. Column Filters
if (columnFilters) {
for (const filter of columnFilters) {
const column = this.getColumn(filter.id);
if (!column) continue;
const value = filter.value;
if (isEmpty(value)) continue;
// Handle Array (range or multiple select)
if (Array.isArray(value)) {
// Range filter (e.g. [min, max])
if (value.length === 2 && (typeof value[0] === 'number' || typeof value[0] === 'string')) {
const [min, max] = value;
if (!isEmpty(min) && !isEmpty(max)) {
conditions.push(and(gte(column, min), lte(column, max))!);
} else if (!isEmpty(min)) {
conditions.push(gte(column, min)!);
} else if (!isEmpty(max)) {
conditions.push(lte(column, max)!);
}
}
// Multi-select (IN)
else if (value.length > 0) {
conditions.push(inArray(column, value)!);
}
}
// Boolean
else if (typeof value === 'boolean') {
conditions.push(eq(column, value)!);
}
// Number
else if (typeof value === 'number') {
conditions.push(eq(column, value)!);
}
// String (Search)
else if (typeof value === 'string') {
conditions.push(ilike(column, `%${value}%`)!);
}
}
}
// 2. Global Filter
if (globalFilter) {
const searchConditions: SQL[] = [];
this.columnMap.forEach((column) => {
// Implicitly supports only text-compatible columns for ilike
// Drizzle might throw if type mismatch, so user should be aware
searchConditions.push(ilike(column, `%${globalFilter}%`));
});
if (searchConditions.length > 0) {
conditions.push(or(...searchConditions)!);
}
}
return conditions.length > 0 ? and(...conditions) : undefined;
}
/**
* Build the ORDER BY clause
*/
getOrderBy(sorting?: SortingState): SQL[] {
if (!sorting || !sorting.length) return [];
return sorting.map((sort) => {
const column = this.getColumn(sort.id);
if (!column) return null;
return sort.desc ? desc(column) : asc(column);
}).filter(Boolean) as SQL[];
}
/**
* Build the GROUP BY clause
*/
getGroupBy(grouping?: GroupingState): SQL[] {
if (!grouping || !grouping.length) return [];
return grouping.map(g => this.getColumn(g)).filter(Boolean) as SQL[];
}
/**
* Get Limit and Offset
*/
getPagination(pagination?: PaginationState) {
if (!pagination) return { limit: 10, offset: 0 };
return {
limit: pagination.pageSize,
offset: pagination.pageIndex * pagination.pageSize,
};
}
/**
* Helper to apply all state to a query builder.
* Returns the modifier objects that can be passed to drizzle query builder.
*/
getQueryParts(state: DrizzleTableState) {
return {
where: this.getWhere(state.columnFilters, state.globalFilter),
orderBy: this.getOrderBy(state.sorting),
groupBy: this.getGroupBy(state.grouping),
...this.getPagination(state.pagination)
};
}
}
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