@paroicms/server-image-cache-engine/dist/owner-transaction/owner-image-manager.js

The image variant engine that we use at Paroi.

import { associateOwnerToImages } from "../internal/queries.js";
export function createOwnerImageManager({ ownerHandle, isHandleReusable, engineContext, }) {
    const pendingData = new Map(); // key: imageCacheId, value: rawResizeR
    let flushTimeout;
    function startFlushTimeout() {
        if (flushTimeout)
            return;
        flushTimeout = setTimeout(() => {
            flushTimeout = undefined;
            void flush().catch((error) => {
                engineContext.logger.error("Error during auto-flush:", error);
            });
        }, 2_000);
    }
    async function flush() {
        if (pendingData.size === 0)
            return;
        clearFlushTimeout();
        const cacheImages = Array.from(pendingData).map(([imageCacheId, rawResizeR]) => ({
            imageCacheId,
            rawResizeR,
        }));
        pendingData.clear();
        await associateOwnerToImages(engineContext, {
            ownerHandle,
            cacheImages,
            isHandleReusable,
        });
    }
    function clearFlushTimeout() {
        if (flushTimeout) {
            clearTimeout(flushTimeout);
            flushTimeout = undefined;
        }
    }
    return {
        add(imageCacheId, rawResizeR) {
            pendingData.set(imageCacheId, rawResizeR);
            startFlushTimeout();
        },
        flush,
    };
}
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