import type { ValidateResult } from "react-hook-form";
export const allowedIdentifierCharactersRegex = /^[_a-z0-9-]*$/;
export const leadingAndTrailingAlphanumericCharactersRegex =
/^([a-z0-9](.*[a-z0-9])?)?$/;
export const IDENTIFIER_ERROR_MESSAGES = {
empty: "Cannot be empty",
allowedChars:
"Must have only lowercase alphanumeric characters, dashes, and underscores",
leadingTrailing: "Must start and end with lowercase alphanumeric characters",
} as const;
/**
* Validates that identifier is not empty and contains only allowed characters.
* Used for immediate validation feedback while typing.
*/
export function validateIdentifierAllowedChars(value: string): ValidateResult {
if (!value || value.trim() === "") {
return IDENTIFIER_ERROR_MESSAGES.empty;
}
if (!allowedIdentifierCharactersRegex.test(value)) {
return IDENTIFIER_ERROR_MESSAGES.allowedChars;
}
return true;
}
/**
* Validates that identifier starts and ends with alphanumeric characters.
* Used for deferred validation feedback on blur.
*/
export function validateIdentifierLeadingTrailing(
value: string
): ValidateResult {
if (!leadingAndTrailingAlphanumericCharactersRegex.test(value)) {
return IDENTIFIER_ERROR_MESSAGES.leadingTrailing;
}
return true;
}
/**
* Full identifier validation combining all checks.
*/
export function validateIdentifier(value: string): ValidateResult {
const allowedCharsResult = validateIdentifierAllowedChars(value);
if (allowedCharsResult !== true) {
return allowedCharsResult;
}
return validateIdentifierLeadingTrailing(value);
}
