*/

const SKILLS_INVALIDATION_PREFIXES = ["skills"] as const;

export function shouldInvalidateSkillsSnapshotForPaths(changedPaths: string[]): boolean {

return changedPaths.some((path) =>

SKILLS_INVALIDATION_PREFIXES.some(

(prefix) => path === prefix || path.startsWith(`${prefix}.`),

),

function matchesSkillsInvalidationPrefix(path: string): boolean {

return SKILLS_INVALIDATION_PREFIXES.some(

(prefix) => path === prefix || path.startsWith(`${prefix}.`),

);

}

function firstSkillsChangedPath(changedPaths: string[]): string | undefined {

return changedPaths.find((path) =>

SKILLS_INVALIDATION_PREFIXES.some(

(prefix) => path === prefix || path.startsWith(`${prefix}.`),

),

);

return changedPaths.find(matchesSkillsInvalidationPrefix);

}

export function shouldInvalidateSkillsSnapshotForPaths(changedPaths: string[]): boolean {

return firstSkillsChangedPath(changedPaths) !== undefined;

}

export function diffConfigPaths(prev: unknown, next: unknown, prefix = ""): string[] {

// the user touches skills.* config. Without this, sessions keep advertising

// tools that no longer exist in the allowlist, which causes infinite

// tool-not-found loops against the model.

if (shouldInvalidateSkillsSnapshotForPaths(changedPaths)) {

const changedPath = firstSkillsChangedPath(changedPaths);

bumpSkillsSnapshotVersion({ reason: "config-change", changedPath });

opts.log.info(

`skills snapshot invalidated by config change (${changedPath ?? "skills.*"})`,

);

const skillsChangedPath = firstSkillsChangedPath(changedPaths);

if (skillsChangedPath !== undefined) {

bumpSkillsSnapshotVersion({ reason: "config-change", changedPath: skillsChangedPath });

opts.log.info(`skills snapshot invalidated by config change (${skillsChangedPath})`);

}

opts.log.info(`config change detected; evaluating reload (${changedPaths.join(", ")})`);