import express from 'express';
import prisma from '../../db/prisma';

const router = express.Router();

// Get conversations for an agent or Just Chat
router.get('/', async (req, res) => {
  try {
    const { agentId, isJustChat } = req.query;

    let user = await prisma.user.findUnique({ where: { email: 'local@localhost' } });
    if (!user) {
      user = await prisma.user.create({ data: { email: 'local@localhost', password: 'local', name: 'Local User' } });
    }

    const where: any = { userId: user.id };

    if (isJustChat === 'true') {
      where.agentId = null;
    } else if (agentId) {
      where.agentId = agentId;
    }

    const conversations = await prisma.conversation.findMany({
      where,
      include: {
        messages: {
          orderBy: { createdAt: 'asc' }
        },
        agent: true
      },
      orderBy: { updatedAt: 'desc' }
    });

    res.json({ success: true, data: conversations });
  } catch (err) {
    res.status(500).json({ success: false, error: (err as any).message });
  }
});

// Get active conversation for agent/justChat
router.get('/active', async (req, res) => {
  try {
    const { agentId, isJustChat } = req.query;

    let user = await prisma.user.findUnique({ where: { email: 'local@localhost' } });
    if (!user) {
      user = await prisma.user.create({ data: { email: 'local@localhost', password: 'local', name: 'Local User' } });
    }

    const where: any = { userId: user.id };

    if (isJustChat === 'true') {
      where.agentId = null;
    } else if (agentId) {
      where.agentId = agentId;
    }

    // Get most recent conversation
    const conversation = await prisma.conversation.findFirst({
      where,
      include: {
        messages: {
          orderBy: { createdAt: 'asc' }
        }
      },
      orderBy: { updatedAt: 'desc' }
    });

    res.json({ success: true, data: conversation });
  } catch (err) {
    res.status(500).json({ success: false, error: (err as any).message });
  }
});

// Get messages for a specific conversation
router.get('/:conversationId/messages', async (req, res) => {
  try {
    const { conversationId } = req.params;

    const messages = await prisma.message.findMany({
      where: { conversationId },
      orderBy: { createdAt: 'asc' }
    });

    res.json({ success: true, data: messages });
  } catch (err) {
    res.status(500).json({ success: false, error: (err as any).message });
  }
});

export default router;