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57a1132 | 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 | const { createClient } = require('@supabase/supabase-js');
const ws = require('ws');
const supabase = require('../db');
/**
* Helper to generate a tenant-scoped Supabase client dynamically per request.
* This injects the active user JWT token into the client request headers,
* which triggers Row-Level Security (RLS) policies inside PostgreSQL natively.
*/
const getTenantDb = (req) => {
const authHeader = req.headers.authorization;
if (!authHeader || !authHeader.startsWith('Bearer ')) {
return supabase; // Fallback to global admin client
}
const token = authHeader.split(' ')[1];
return createClient(process.env.SUPABASE_URL, process.env.SUPABASE_KEY, {
auth: {
persistSession: false
},
realtime: {
transport: ws
},
global: {
headers: {
Authorization: `Bearer ${token}`
}
}
});
};
/**
* Express Middleware to validate Supabase JWT session and extract tenant/role metadata.
*/
const requireAuth = async (req, res, next) => {
const authHeader = req.headers.authorization;
if (!authHeader || !authHeader.startsWith('Bearer ')) {
return res.status(401).json({ error: 'Authorization token is missing or malformed' });
}
const token = authHeader.split(' ')[1];
try {
const { data: { user }, error } = await supabase.auth.getUser(token);
if (error || !user) {
return res.status(401).json({ error: 'Invalid or expired auth session' });
}
// Retrieve custom SaaS tenancy properties from user metadata claims
const userMetadata = user.user_metadata || {};
req.user = {
id: user.id,
email: user.email,
role: userMetadata.role || 'Counselor',
organization_id: userMetadata.organization_id || '00000000-0000-0000-0000-000000000001', // Fallback to Default Org
branch_id: userMetadata.branch_id || '00000000-0000-0000-0000-000000000002', // Fallback to Default Branch
};
next();
} catch (err) {
console.error('Authentication check failed:', err);
return res.status(500).json({ error: 'Internal Auth Validation Server Error' });
}
};
/**
* Express Middleware to restrict endpoints based on counselor roles.
*/
const requireRole = (allowedRoles) => {
return (req, res, next) => {
if (!req.user) {
return res.status(401).json({ error: 'User context is unauthenticated' });
}
if (!allowedRoles.includes(req.user.role)) {
return res.status(403).json({ error: 'Forbidden: Role privileges exceeded' });
}
next();
};
};
module.exports = {
getTenantDb,
requireAuth,
requireRole
};
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