import type { Context } from "hono";
import { getCookie } from "hono/cookie";
import { getAgentForSession } from "./oauth";
import type { Agent } from "@atproto/api";

export interface Session {
	did: string | null;
	handle: string | null;
	agent: Agent | null;
}

export async function getSession(c: Context): Promise<Session> {
	const did = getCookie(c, "session");

	if (!did) {
		return { did: null, handle: null, agent: null };
	}

	try {
		const { agent, handle } = await getAgentForSession(did);
		return { did, handle, agent };
	} catch (error) {
		// Session might be invalid or expired
		console.error("Session error:", error);
		return { did: null, handle: null, agent: null };
	}
}

export function requireAuth(c: Context): Session {
	const session = c.get("session") as Session;
	if (!session.did || !session.agent) {
		throw new Error("Not authenticated");
	}
	return session;
}