All files / middleware tenant.js

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
/**
 * Tenant Middleware
 * Multi-tenant context extraction and validation
 * 
 * @module middleware/tenant
 */
 
const jwt = require('jsonwebtoken');
const { pool } = require('../config/database');
const { logger } = require('../config/logger');
const GracePeriodService = require('../services/GracePeriodService');
 
/**
 * Extract tenant context from request
 * Supports multiple methods: JWT token, header
 */
async function tenantMiddleware(req, res, next) {
  try {
    let tenantId = null;
    let tenantInfo = null;
 
    // Method 1: Extract from JWT token (most common for API requests)
    const authHeader = req.headers.authorization;
    if (authHeader && authHeader.startsWith('Bearer ')) {
      const token = authHeader.split(' ')[1];
      try {
        const decoded = jwt.verify(token, process.env.JWT_SECRET);
        tenantId = decoded.tenantId;
        req.user = decoded;
      } catch (error) {
        // Token invalid, will be handled by auth middleware
      }
    }
 
    // Method 2: Extract from X-Tenant-ID header
    if (!tenantId && req.headers['x-tenant-id']) {
      tenantId = parseInt(req.headers['x-tenant-id']);
    }
 
    // If tenant ID found, validate and attach to request
    if (tenantId) {
      if (!tenantInfo) {
        const [tenants] = await pool.execute(
          'SELECT id, name, subdomain, status, max_users, max_conversations, max_messages_per_month, subscription_end_date, grace_period_end FROM tenants WHERE id = ?',
          [tenantId]
        );
        
        if (tenants.length > 0) {
          tenantInfo = tenants[0];
        }
      }
 
      // Check tenant status with grace period support
      if (tenantInfo) {
        // Check if tenant should have access (includes grace period check)
        const hasAccess = await GracePeriodService.shouldAllowAccess(tenantInfo);
        
        if (!hasAccess) {
          return res.status(403).json({
            success: false,
            error: 'Tenant account is suspended or cancelled',
          });
        }
 
        req.tenantId = tenantId;
        // Return display-friendly tenant info (hides grace_period details)
        req.tenant = GracePeriodService.getDisplayStatus(tenantInfo);
        logger.debug(`Tenant context set: ${tenantId} (${tenantInfo.name})`);
      }
    }
 
    next();
  } catch (error) {
    logger.error('Error in tenant middleware', { error: error.message });
    next(error);
  }
}
 
/**
 * Require tenant context
 * Ensures tenant ID is present in request
 */
function requireTenant(req, res, next) {
  if (!req.tenantId) {
    return res.status(400).json({
      success: false,
      error: 'Tenant context is required',
    });
  }
  next();
}
 
/**
 * Check tenant limits
 * Validates if tenant has not exceeded their plan limits
 */
async function checkTenantLimits(limitType) {
  return async (req, res, next) => {
    try {
      if (!req.tenantId) {
        return next();
      }
 
      const [tenants] = await pool.execute(
        'SELECT * FROM tenants WHERE id = ?',
        [req.tenantId]
      );
 
      if (tenants.length === 0) {
        return res.status(404).json({
          success: false,
          error: 'Tenant not found',
        });
      }
 
      const tenant = tenants[0];
 
      // Check specific limit
      switch (limitType) {
        case 'users':
          const [userCount] = await pool.execute(
            'SELECT COUNT(*) as count FROM users WHERE tenant_id = ?',
            [req.tenantId]
          );
          if (userCount[0].count >= tenant.max_users) {
            return res.status(403).json({
              success: false,
              error: 'User limit reached for your plan',
            });
          }
          break;
 
        case 'conversations':
          const [convCount] = await pool.execute(
            'SELECT COUNT(*) as count FROM conversations WHERE tenant_id = ?',
            [req.tenantId]
          );
          if (convCount[0].count >= tenant.max_conversations) {
            return res.status(403).json({
              success: false,
              error: 'Conversation limit reached for your plan',
            });
          }
          break;
 
        case 'messages':
          if (tenant.current_messages_count >= tenant.max_messages_per_month) {
            return res.status(403).json({
              success: false,
              error: 'Monthly message limit reached for your plan',
            });
          }
          break;
      }
 
      next();
    } catch (error) {
      logger.error('Error checking tenant limits', { error: error.message });
      next(error);
    }
  };
}
 
module.exports = {
  tenantMiddleware,
  requireTenant,
  checkTenantLimits,
};