39 lines
969 B
TypeScript
39 lines
969 B
TypeScript
/**
|
|
* AvatarDisplay
|
|
*
|
|
* Deterministic mapping of avatar-related data to display formats.
|
|
*/
|
|
|
|
export class AvatarDisplay {
|
|
/**
|
|
* Converts binary buffer to base64 string for display.
|
|
*/
|
|
static bufferToBase64(buffer: ArrayBuffer): string {
|
|
const bytes = new Uint8Array(buffer);
|
|
let binary = '';
|
|
for (let i = 0; i < bytes.byteLength; i++) {
|
|
binary += String.fromCharCode(bytes[i]);
|
|
}
|
|
return btoa(binary);
|
|
}
|
|
|
|
/**
|
|
* Determines if avatar data is valid for display.
|
|
* Accepts base64-encoded string buffer.
|
|
*/
|
|
static hasValidData(buffer: string, contentType: string): boolean {
|
|
return buffer.length > 0 && contentType.length > 0;
|
|
}
|
|
|
|
/**
|
|
* Formats content type for display (e.g., "image/png" → "PNG").
|
|
*/
|
|
static formatContentType(contentType: string): string {
|
|
const parts = contentType.split('/');
|
|
if (parts.length === 2) {
|
|
return parts[1].toUpperCase();
|
|
}
|
|
return contentType;
|
|
}
|
|
}
|