| 1 | import type { PreviewAnnotationPayload } from "@t3tools/contracts"; |
| 2 | |
| 3 | import { dataUrlToFile } from "./imageCompression"; |
| 4 | |
| 5 | export type PreviewAnnotationCapture = |
| 6 | /** The crop is ready to attach. */ |
| 7 | | { readonly status: "captured"; readonly file: File } |
| 8 | /** The pick carried no crop, which is normal for comment-only annotations. */ |
| 9 | | { readonly status: "none" } |
| 10 | /** The crop could not be decoded. Send the annotation without it. */ |
| 11 | | { readonly status: "failed" }; |
| 12 | |
| 13 | const PNG_DATA_URL_PREFIX = "data:image/png;base64,"; |
| 14 | |
| 15 | /** Decode Electron's PNG crop locally; fetching a data URL violates desktop connect-src. */ |
| 16 | export function capturePreviewAnnotationScreenshot( |
| 17 | annotation: PreviewAnnotationPayload, |
| 18 | ): PreviewAnnotationCapture { |
| 19 | if (!annotation.screenshot) return { status: "none" }; |
| 20 | try { |
| 21 | const { dataUrl } = annotation.screenshot; |
| 22 | if (!dataUrl.startsWith(PNG_DATA_URL_PREFIX)) { |
| 23 | return { status: "failed" }; |
| 24 | } |
| 25 | const file = dataUrlToFile(dataUrl, `preview-annotation-${annotation.id}.png`, "image/png"); |
| 26 | return file.size > 0 ? { status: "captured", file } : { status: "failed" }; |
| 27 | } catch { |
| 28 | return { status: "failed" }; |
| 29 | } |
| 30 | } |