'use client';
import { useState, useCallback } from 'react';
import { api } from '@/lib/api/client';

interface Message {
  id: string;
  type: 'SMS' | 'EMAIL';
  direction: 'inbound' | 'outbound';
  body?: string;
  subject?: string;
  status: string;
  dateAdded: string;
}

interface Conversation {
  id: string;
  contactId: string;
  contactName?: string;
  lastMessageBody?: string;
  lastMessageDate?: string;
  unreadCount: number;
  type: 'SMS' | 'EMAIL';
}

export function useConversations() {
  const [conversations, setConversations] = useState<Conversation[]>([]);
  const [messages, setMessages] = useState<Message[]>([]);
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  const fetchConversations = useCallback(async (params?: { limit?: number; status?: string; contactId?: string }) => {
    setLoading(true);
    setError(null);
    try {
      const result = await api.conversations.getAll(params);
      setConversations(result.data || []);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Failed to fetch conversations');
    } finally {
      setLoading(false);
    }
  }, []);

  const fetchMessages = useCallback(async (conversationId: string, limit = 50) => {
    setLoading(true);
    setError(null);
    try {
      const result = await api.conversations.getMessages(conversationId, limit);
      setMessages(result.data || []);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Failed to fetch messages');
    } finally {
      setLoading(false);
    }
  }, []);

  const sendSMS = async (contactId: string, message: string) => {
    const result = await api.conversations.sendSMS(contactId, message);
    return result;
  };

  const sendEmail = async (contactId: string, subject: string, htmlBody: string) => {
    const result = await api.conversations.sendEmail(contactId, subject, htmlBody);
    return result;
  };

  const markAsRead = async (id: string) => {
    await api.conversations.markAsRead(id);
    setConversations(prev =>
      prev.map(c => c.id === id ? { ...c, unreadCount: 0 } : c)
    );
  };

  const deleteConversation = async (id: string) => {
    await api.conversations.delete(id);
    setConversations(prev => prev.filter(c => c.id !== id));
  };

  return {
    conversations,
    messages,
    loading,
    error,
    fetchConversations,
    fetchMessages,
    sendSMS,
    sendEmail,
    markAsRead,
    deleteConversation,
  };
}