mcp-server-cloudflare/apps/sandbox-container/server/utils.ts

export async function fileToBase64(blob: Blob): Promise<string> {
	// Use ArrayBuffer instead of text() for binary data
	const arrayBuffer = await blob.arrayBuffer()
	const byteArray = new Uint8Array(arrayBuffer)

	// Convert byte array to base64 string
	let binary = ''
	byteArray.forEach((byte) => {
		binary += String.fromCharCode(byte)
	})

	// Apply base64 encoding
	return btoa(binary)
}

// Used for file related tool calls in case the llm sends a full resource URI
export async function stripProtocolFromFilePath(path: string): Promise<string> {
	return path.startsWith('file://') ? path.replace('file://', '') : path
}