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normalize camera name to lower case and improve hash generation

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This commit is contained in:
Josh Hawkins 2025-10-12 18:47:02 -05:00
parent bedba7a05a
commit a246b71580
1 changed files with 15 additions and 5 deletions
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20
web/src/utils/cameraUtil.ts
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@ -1,20 +1,30 @@
/**
* Generates a fixed-length hash from a camera name for use as a valid camera identifier.
* Used when user enters a display name with spaces or special characters.
* Works safely with Unicode input while outputting Latin-only identifiers.
*
* @param name - The original camera name/display name
* @returns A valid camera identifier (lowercase, alphanumeric, max 8 chars)
*/
export function generateFixedHash(name: string): string {
const encoded = encodeURIComponent(name);
const base64 = btoa(encoded);
// Safely encode Unicode as UTF-8 bytes
const utf8Bytes = new TextEncoder().encode(name);
// Convert to base64 manually
let binary = "";
for (const byte of utf8Bytes) {
binary += String.fromCharCode(byte);
}
const base64 = btoa(binary);
// Strip out non-alphanumeric characters and truncate
const cleanHash = base64.replace(/[^a-zA-Z0-9]/g, "").substring(0, 8);
return `cam_${cleanHash.toLowerCase()}`;
}
/**
* Checks if a string is a valid camera name identifier.
* Valid camera names contain only letters, numbers, underscores, and hyphens.
* Valid camera names contain only ASCII letters, numbers, underscores, and hyphens.
*
* @param name - The camera name to validate
* @returns True if the name is valid, false otherwise
@ -34,7 +44,7 @@ export function processCameraName(userInput: string): {
finalCameraName: string;
friendlyName?: string;
} {
const normalizedInput = userInput.replace(/\s+/g, "_");
const normalizedInput = userInput.replace(/\s+/g, "_").toLowerCase();
if (isValidCameraName(normalizedInput)) {
return {