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* Batch Operation Utilities
*
* Provides efficient batch operations for database updates,
* deletes, and upserts to minimize the number of database roundtrips.
*/
import { prisma } from '@/lib/prisma';
import { Prisma } from '@prisma/client';
export interface BatchResult {
success: boolean;
count: number;
errors?: string[];
}
/**
* Batch update multiple records efficiently
*
* @example
* await batchUpdate(
* prisma.product,
* [1, 2, 3],
* { status: 'INACTIVE' }
* );
*/
export async function batchUpdate<T>(
model: {
updateMany: (args: { where: { id: { in: number[] } }; data: T }) => Promise<{ count: number }>;
},
ids: number[],
data: T
): Promise<BatchResult> {
if (ids.length === 0) {
return { success: true, count: 0 };
}
try {
const result = await model.updateMany({
where: { id: { in: ids } },
data});
return {
success: true,
count: result.count};
} catch (error) {
return {
success: false,
count: 0,
errors: [error instanceof Error ? error.message : 'Unknown error']};
}
}
/**
* Batch delete multiple records efficiently
*
* @example
* await batchDelete(prisma.review, [1, 2, 3]);
*/
export async function batchDelete(
model: {
deleteMany: (args: { where: { id: { in: number[] } } }) => Promise<{ count: number }>;
},
ids: number[]
): Promise<BatchResult> {
if (ids.length === 0) {
return { success: true, count: 0 };
}
try {
const result = await model.deleteMany({
where: { id: { in: ids } }});
return {
success: true,
count: result.count};
} catch (error) {
return {
success: false,
count: 0,
errors: [error instanceof Error ? error.message : 'Unknown error']};
}
}
/**
* Batch upsert operations using a transaction
*
* @example
* await batchUpsert(prisma.product, items, 'sku');
*/
export async function batchUpsert<
CreateInput,
UpdateInput,
WhereUniqueInput
>(
model: {
upsert: (args: {
where: WhereUniqueInput;
create: CreateInput;
update: UpdateInput;
}) => Promise<unknown>;
},
items: Array<{
where: WhereUniqueInput;
create: CreateInput;
update: UpdateInput;
}>,
options?: { batchSize?: number }
): Promise<BatchResult> {
if (items.length === 0) {
return { success: true, count: 0 };
}
const batchSize = options?.batchSize ?? 100;
const errors: string[] = [];
let totalCount = 0;
// Process in batches to avoid transaction size limits
for (let i = 0; i < items.length; i += batchSize) {
const batch = items.slice(i, i + batchSize);
try {
// Use sequential processing within transaction to avoid type issues
await prisma.$transaction(async () => {
for (const item of batch) {
await model.upsert(item);
}
});
totalCount += batch.length;
} catch (error) {
errors.push(
`Batch ${Math.floor(i / batchSize) + 1} failed: ${
error instanceof Error ? error.message : 'Unknown error'
}`
);
}
}
return {
success: errors.length === 0,
count: totalCount,
errors: errors.length > 0 ? errors : undefined};
}
/**
* Execute multiple related operations in a transaction
*
* @example
* await transactionalBatch([
* prisma.product.update({ where: { id: 1 }, data: { stock: 0 } }),
* prisma.stockMovement.create({ data: { productId: 1, quantity: -10, type: 'SALE' } }),
* ]);
*/
export async function transactionalBatch<T extends Prisma.PrismaPromise<unknown>[]>(
operations: [...T]
): Promise<{ success: boolean; results?: Prisma.Overwrite<T, unknown[]>; error?: string }> {
try {
const results = await prisma.$transaction(operations);
return {
success: true,
results: results as Prisma.Overwrite<T, unknown[]>};
} catch (error) {
return {
success: false,
error: error instanceof Error ? error.message : 'Unknown error'};
}
}
/**
* Soft delete products by marking them as inactive and logging the action
*/
export async function softDeleteProducts(
productIds: number[],
deletedById?: number,
reason?: string
): Promise<BatchResult> {
if (productIds.length === 0) {
return { success: true, count: 0 };
}
try {
// Use a transaction to update products and create stock movements
const result = await prisma.$transaction(async (tx) => {
// Update products to 0 stock (soft delete equivalent for products)
const updated = await tx.product.updateMany({
where: { id: { in: productIds } },
data: { stock: 0 }});
// Create stock movement records for audit trail
await tx.stockMovement.createMany({
data: productIds.map(productId => ({
productId,
quantity: 0,
type: 'ADJUSTMENT',
reason: reason || 'Product soft deleted',
createdBy: deletedById?.toString()}))});
return updated.count;
});
return {
success: true,
count: result};
} catch (error) {
return {
success: false,
count: 0,
errors: [error instanceof Error ? error.message : 'Unknown error']};
}
}
/**
* Bulk update product prices with percentage discount
*/
export async function bulkPriceUpdate(
productIds: number[],
discountPercentage: number
): Promise<BatchResult> {
if (productIds.length === 0) {
return { success: true, count: 0 };
}
try {
// Fetch current prices
const products = await prisma.product.findMany({
where: { id: { in: productIds } },
select: { id: true, price: true }});
// Calculate and update discounted prices
const result = await prisma.$transaction(
products.map(product =>
prisma.product.update({
where: { id: product.id },
data: {
discountedPrice: product.price * (1 - discountPercentage / 100)}})
)
);
return {
success: true,
count: result.length};
} catch (error) {
return {
success: false,
count: 0,
errors: [error instanceof Error ? error.message : 'Unknown error']};
}
}
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