/**
 * MI Data Queries — dispatches content queries to module-specific readers.
 *
 * Used by the agentic loop to fetch module data server-side and feed
 * results back into the LLM context.
 */

import { getUpcomingEventsForMI } from "../modules/rcal/mod";
import { getRecentNotesForMI } from "../modules/rnotes/mod";
import { getRecentTasksForMI } from "../modules/rtasks/mod";

export interface MiQueryResult {
	ok: boolean;
	module: string;
	queryType: string;
	data: any;
	summary: string;
}

/**
 * Query module content by type. Returns structured data + a text summary
 * the LLM can consume.
 */
export function queryModuleContent(
	space: string,
	module: string,
	queryType: "recent" | "summary" | "count",
	limit = 5,
): MiQueryResult {
	switch (module) {
		case "rnotes": {
			const notes = getRecentNotesForMI(space, limit);
			if (queryType === "count") {
				return { ok: true, module, queryType, data: { count: notes.length }, summary: `${notes.length} recent notes found.` };
			}
			const lines = notes.map((n) => `- "${n.title}" (${n.type}, updated ${new Date(n.updatedAt).toLocaleDateString()})${n.tags.length ? ` [${n.tags.join(", ")}]` : ""}: ${n.contentPlain.slice(0, 100)}...`);
			return { ok: true, module, queryType, data: notes, summary: lines.length ? `Recent notes:\n${lines.join("\n")}` : "No notes found." };
		}

		case "rtasks": {
			const tasks = getRecentTasksForMI(space, limit);
			if (queryType === "count") {
				return { ok: true, module, queryType, data: { count: tasks.length }, summary: `${tasks.length} open tasks found.` };
			}
			const lines = tasks.map((t) => `- "${t.title}" [${t.status}]${t.priority ? ` (${t.priority})` : ""}${t.description ? `: ${t.description.slice(0, 80)}` : ""}`);
			return { ok: true, module, queryType, data: tasks, summary: lines.length ? `Open tasks:\n${lines.join("\n")}` : "No open tasks." };
		}

		case "rcal": {
			const events = getUpcomingEventsForMI(space, 14, limit);
			if (queryType === "count") {
				return { ok: true, module, queryType, data: { count: events.length }, summary: `${events.length} upcoming events.` };
			}
			const lines = events.map((e) => {
				const date = e.allDay ? e.start.split("T")[0] : e.start;
				let line = `- ${date}: ${e.title}`;
				if (e.location) line += ` (${e.location})`;
				return line;
			});
			return { ok: true, module, queryType, data: events, summary: lines.length ? `Upcoming events:\n${lines.join("\n")}` : "No upcoming events." };
		}

		default:
			return { ok: false, module, queryType, data: null, summary: `Module "${module}" does not support content queries.` };
	}
}