supastash
Version:
Offline-first sync engine for Supabase in React Native using SQLite
49 lines (48 loc) • 1.8 kB
JavaScript
import { getSafeValue } from "../../../serializer";
/**
* Builds a parameterized SQL WHERE clause from selected list of filters.
*
* @param filters - The filters to apply to the query
* @returns An object with the SQL clause and bound values
*/
export function buildWhereClause(filters) {
if (!filters || !filters.length)
return { clause: "", values: [] };
const clauseParts = [];
const values = [];
for (const { column, operator, value } of filters) {
const safeValue = getSafeValue(value);
switch (operator) {
case "IN":
if (!Array.isArray(value) || value.length === 0)
continue;
const isValid = value.every((v) => typeof v === "string" ||
typeof v === "number" ||
typeof v === "boolean" ||
v === null);
if (!isValid) {
throw new Error(`❌ IN clause only supports strings, numbers, or booleans. You passed: ${JSON.stringify(value, null, 2)}`);
}
clauseParts.push(`${column} IN (${value.map(() => "?").join(", ")})`);
values.push(...value);
break;
case "IS":
if (value === null) {
clauseParts.push(`${column} IS NULL`);
}
else {
clauseParts.push(`${column} IS ?`);
values.push(safeValue);
}
break;
default:
clauseParts.push(`${column} ${operator} ?`);
values.push(safeValue);
break;
}
}
return {
clause: clauseParts.length ? `WHERE ${clauseParts.join(" AND ")}` : "",
values,
};
}