Recraft AI MCP Server

import { ImageData } from "." import { Image } from "../api" import { downloadImage } from "./download" import { compressImage, getImageSize, rasterizeSvg } from "./render" import { uploadImage } from "./upload" const MESSAGE_LIMIT = Math.round(1048576 * 0.95) const MIN_SIDE_LENGTH = 128 export const downloadImagesAndMakePreviews = async (imageStorageDirectory: string | undefined, images: Image[]) => { const imagePromises = images.map(async (imageData) => { if (!imageData?.url) { return null } const imageUrl = imageData.url const id = imageData.imageId const image = await downloadImage(imageUrl) let pathOrUrl: string if (imageStorageDirectory) { const path = await uploadImage(imageStorageDirectory, id, image) pathOrUrl = `file://${path}` } else { pathOrUrl = imageUrl } let previewData: ImageData if (image.mimeType === 'image/svg+xml') { previewData = await rasterizeSvg(image.data) } else { previewData = await compressImage(image) } const imageSize = await getImageSize(previewData) return {...image, url: imageUrl, id, pathOrUrl, previewData, ...imageSize} }) const downloadedImages = (await Promise.all(imagePromises)).filter((image) => image !== null) const minSideSize = Math.min(...downloadedImages.map(image => Math.min(image.width, image.height))) const calculateTotalLength = (images: {previewData: ImageData}[]) => images.map(image => image.previewData.data.length).reduce((a, b) => a + b, 0) let scale = 1.0 while (calculateTotalLength(downloadedImages) > MESSAGE_LIMIT && scale * 0.5 * minSideSize >= MIN_SIDE_LENGTH - 1e-6) { scale *= 0.5 const scalePromises = downloadedImages.map(async (image) => { if (image.mimeType === 'image/svg+xml') { image.previewData = await rasterizeSvg(image.data, scale) } else { image.previewData = await compressImage(image, scale) } }) await Promise.all(scalePromises) } let totalLength = 0 let previews = [] for (const {previewData} of downloadedImages) { if (totalLength + previewData.data.length > MESSAGE_LIMIT) { break } totalLength += previewData.data.length previews.push({ type: 'image', ...previewData, }) } return { downloadedImages, previews, } }