export const MEMORY_CATEGORIES = [
	"preference",
	"fact",
	"decision",
	"entity",
	"other",
] as const
export type MemoryCategory = (typeof MEMORY_CATEGORIES)[number]

export function detectCategory(text: string): MemoryCategory {
	const lower = text.toLowerCase()
	if (/prefer|like|love|hate|want/i.test(lower)) return "preference"
	if (/decided|will use|going with/i.test(lower)) return "decision"
	if (/\+\d{10,}|@[\w.-]+\.\w+|is called/i.test(lower)) return "entity"
	if (/is|are|has|have/i.test(lower)) return "fact"
	return "other"
}

export function buildDocumentId(sessionKey: string): string {
	const sanitized = sessionKey
		.replace(/[^a-zA-Z0-9_]/g, "_")
		.replace(/_+/g, "_")
		.replace(/^_|_$/g, "")
	return `session_${sanitized}`
}