import { createMessage, listInbox, markMessageRead, ackMessage, getMessage } from '../../core/services/messageService.js';
import type { Message } from '../../core/schema.js';

export function messageSend(
  cwd: string,
  opts: { from: string; to: string; text: string; taskId?: string },
): void {
  const m = createMessage(cwd, opts);
  console.log(`AgentHub: Message sent ${m.id} (${m.from} → ${m.to})`);
}

export function inboxList(cwd: string, opts: { agent: string; unreadOnly?: boolean }): void {
  const msgs = listInbox(cwd, opts.agent, { unreadOnly: opts.unreadOnly });
  if (msgs.length === 0) {
    console.log(`No messages for ${opts.agent}.`);
    return;
  }
  for (const m of msgs) {
    const flag = m.status === 'unread' ? '●' : ' ';
    console.log(`${flag} ${m.id}  ${m.from} → ${m.to}${m.taskId ? ` [${m.taskId}]` : ''}: ${m.text}`);
  }
}

export function messageRead(cwd: string, id: string): void {
  const m = markMessageRead(cwd, id);
  console.log(`AgentHub: Message read ${m.id} (${m.from} → ${m.to})`);
}

export function inboxMarkRead(cwd: string, opts: { agent: string; unreadOnly?: boolean }): void {
  const msgs = listInbox(cwd, opts.agent, { unreadOnly: opts.unreadOnly });
  for (const m of msgs) markMessageRead(cwd, m.id);
  console.log(`AgentHub: marked ${msgs.length} message${msgs.length === 1 ? '' : 's'} read for ${opts.agent}`);
}

export function messageAck(cwd: string, id: string, by?: string): void {
  const m = ackMessage(cwd, id, by);
  console.log(`AgentHub: Message acked ${m.id} (${m.from} → ${m.to})${by ? ` by ${by}` : ''}`);
}

/**
 * Reply to a message: loads the parent, sends a new message back to the parent's
 * sender (to = parent.from), links it via replyTo, and inherits the parent's
 * taskId unless one is given.
 */
export function messageReply(
  cwd: string,
  parentId: string,
  opts: { from: string; text: string; taskId?: string },
): Message {
  const { message: parent } = getMessage(cwd, parentId);
  const m = createMessage(cwd, {
    from: opts.from,
    to: parent.from,
    text: opts.text,
    taskId: opts.taskId ?? parent.taskId,
    replyTo: parentId,
  });
  console.log(`AgentHub: Reply sent ${m.id} (${m.from} → ${m.to}) ↩ ${parentId}`);
  return m;
}