import express from 'express';
import { DisputeFlowService } from './dispute-flow.service';
import { requireAuth } from '../middleware/auth.middleware';
import { requireRole } from '../middleware/role.middleware';

const router = express.Router();
const service = new DisputeFlowService();

// Create a new dispute
router.post('/disputes', requireAuth, async (req, res) => {
  try {
    const dispute = await service.createDispute({
      dealId: req.body.dealId,
      openedByUserId: req.user.id,
      reasonCode: req.body.reasonCode,
      summary: req.body.summary,
      requestedOutcome: req.body.requestedOutcome
    });
    
    res.status(201).json(dispute);
  } catch (error) {
    console.error('Error creating dispute:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
});

// Add evidence to a dispute
router.post('/disputes/:id/evidence', requireAuth, async (req, res) => {
  try {
    await service.addEvidence(
      parseInt(req.params.id),
      req.body,
      req.user.id
    );
    
    res.status(200).json({ message: 'Evidence added successfully' });
  } catch (error) {
    console.error('Error adding evidence:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
});

// Update dispute status
router.post('/disputes/:id/status', requireAuth, requireRole(['moderator']), async (req, res) => {
  try {
    await service.updateDisputeStatus(
      parseInt(req.params.id),
      req.body.newStatus,
      req.user.id
    );
    
    res.status(200).json({ message: 'Status updated successfully' });
  } catch (error) {
    console.error('Error updating dispute status:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
});

// Resolve a dispute
router.post('/disputes/:id/resolve', requireAuth, requireRole(['moderator', 'admin']), async (req, res) => {
  try {
    await service.resolveDispute(
      parseInt(req.params.id),
      req.body,
      req.user.id
    );
    
    res.status(200).json({ message: 'Dispute resolved successfully' });
  } catch (error) {
    console.error('Error resolving dispute:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
});

// Get dispute details
router.get('/disputes/:id', requireAuth, async (req, res) => {
  try {
    const dispute = await service.getDisputeById(parseInt(req.params.id));
    
    if (!dispute) {
      return res.status(404).json({ error: 'Dispute not found' });
    }
    
    res.json(dispute);
  } catch (error) {
    console.error('Error fetching dispute:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
});

// Get dispute events history
router.get('/disputes/:id/events', requireAuth, async (req, res) => {
  try {
    const events = await service.getDisputeEvents(parseInt(req.params.id));
    res.json(events);
  } catch (error) {
    console.error('Error fetching dispute events:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
});

export default router;