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;
}