"use client";

import { atom } from "jotai";
import type { Document } from "@/contracts/types/document.types";

/**
 * Atom to store the IDs of documents mentioned in the current chat composer.
 * This is used to pass document context to the backend when sending a message.
 */
export const mentionedDocumentIdsAtom = atom<{
	surfsense_doc_ids: number[];
	document_ids: number[];
}>({
	surfsense_doc_ids: [],
	document_ids: [],
});

/**
 * Atom to store the full document objects mentioned in the current chat composer.
 * This persists across component remounts.
 */
export const mentionedDocumentsAtom = atom<Pick<Document, "id" | "title" | "document_type">[]>([]);

/**
 * Simplified document info for display purposes
 */
export interface MentionedDocumentInfo {
	id: number;
	title: string;
	document_type: string;
}

/**
 * Queue atom for sidebar → composer communication (additions).
 * The sidebar writes documents here; the Composer picks them up,
 * inserts chips, and clears the queue.
 */
export const pendingDocumentMentionsAtom = atom<
	Pick<Document, "id" | "title" | "document_type">[]
>([]);

/**
 * Queue atom for sidebar → composer communication (removals).
 * The sidebar writes { id, document_type } here; the Composer removes
 * the matching chips and clears the queue.
 */
export const pendingDocumentRemovalsAtom = atom<{ id: number; document_type?: string }[]>([]);

/**
 * Atom to store mentioned documents per message ID.
 * This allows displaying which documents were mentioned with each user message.
 */
export const messageDocumentsMapAtom = atom<Record<string, MentionedDocumentInfo[]>>({});