Add source code

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

src/files.ts

@@ -0,0 +1,66 @@
+import { basename, extname } from "path";
+
+export interface FileInfo {
+  jpegPath: string;
+  jpegSize: number;
+  rawPath?: string;
+  rawSize?: number;
+}
+
+export const getBasenameWithoutExtension = (path: string): string => {
+  const base = basename(path);
+  const extension = extname(path);
+  return base.slice(0, -extension.length);
+};
+
+export const getBasenameWithExtension = (path: string): string => {
+  return basename(path);
+};
+
+export const prepareFiles = async (files: string[]): Promise<FileInfo[]> => {
+  if (files.length > 10) {
+    throw new Error("Up to 10 files are allowed at a time.");
+  }
+
+  const parsedFiles: FileInfo[] = [];
+
+  for (const pair of files) {
+    const parts = pair.split(/(?<!\\):/);
+    const jpegPath = parts[0].replace(/\\:/g, ":");
+    const rawPath = parts[1]?.replace(/\\:/g, ":");
+
+    const jpegFile = Bun.file(jpegPath);
+    if (!(await jpegFile.exists())) {
+      throw new Error(`JPEG file not found: ${jpegPath}`);
+    }
+
+    const jpegSize = jpegFile.size;
+
+    if (!rawPath) {
+      parsedFiles.push({
+        jpegPath,
+        jpegSize,
+        rawPath: undefined,
+        rawSize: undefined,
+      });
+
+      continue;
+    }
+
+    const rawFile = Bun.file(rawPath);
+    if (!(await rawFile.exists())) {
+      throw new Error(`RAW file not found: ${rawPath}`);
+    }
+
+    const rawSize = rawFile.size;
+
+    parsedFiles.push({
+      jpegPath,
+      jpegSize,
+      rawPath: rawPath,
+      rawSize: rawSize,
+    });
+  }
+
+  return parsedFiles;
+};