/**
 * MCP tools for rDocs (linked documents).
 *
 * Tools: rdocs_list_documents
 */

import type { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { z } from "zod";
import type { SyncServer } from "../local-first/sync-server";
import { docsDocId } from "../../modules/rdocs/schemas";
import type { DocsDoc } from "../../modules/rdocs/schemas";
import { resolveAccess, accessDeniedResponse } from "./_auth";

export function registerDocsTools(server: McpServer, syncServer: SyncServer) {
	server.tool(
		"rdocs_list_documents",
		"List linked documents in a space",
		{
			space: z.string().describe("Space slug"),
			token: z.string().optional().describe("JWT auth token"),
			search: z.string().optional().describe("Search in title"),
		},
		async ({ space, token, search }) => {
			const access = await resolveAccess(token, space, false);
			if (!access.allowed) return accessDeniedResponse(access.reason!);

			const doc = syncServer.getDoc<DocsDoc>(docsDocId(space));
			if (!doc) return { content: [{ type: "text", text: JSON.stringify({ error: "No docs data found" }) }] };

			let documents = Object.values(doc.linkedDocuments || {});
			if (search) {
				const q = search.toLowerCase();
				documents = documents.filter(d => d.title.toLowerCase().includes(q));
			}

			return { content: [{ type: "text", text: JSON.stringify(documents, null, 2) }] };
		},
	);
}