From e6fb6dd8cd9f9b1ab84ab368b9e5fb1d7492051d Mon Sep 17 00:00:00 2001
From: Tiago Yamamoto <tiago.ribeiro@inventcloud.com.br>
Date: Wed, 24 Dec 2025 11:56:31 -0300
Subject: [PATCH] fix: uuid_generate_v7 integer overflow and seeder role
 constraint

Migration 009:
- Simplified uuid_generate_v7() to avoid integer overflow on bit shifts
- Uses double precision for timestamp then converts to hex

Seeder:
- Changed roles from 'admin','company' to 'companyAdmin'
- Matches users table CHECK constraint: superadmin, companyAdmin, recruiter, jobSeeker
---
 .../009_create_uuid_v7_function.sql           | 58 ++++++++-----------
 seeder-api/src/seeders/users.js               |  6 +-
 2 files changed, 27 insertions(+), 37 deletions(-)

diff --git a/backend/migrations/009_create_uuid_v7_function.sql b/backend/migrations/009_create_uuid_v7_function.sql
index 75c9c57..d623e0c 100644
--- a/backend/migrations/009_create_uuid_v7_function.sql
+++ b/backend/migrations/009_create_uuid_v7_function.sql
@@ -1,52 +1,42 @@
 -- Migration: Create UUID v7 generation function
 -- Description: PostgreSQL function to generate UUID v7 (time-ordered UUIDs)
--- UUID v7 format: tttttttt-tttt-7xxx-yxxx-xxxxxxxxxxxx
--- Where: t = timestamp, 7 = version, y = variant, x = random
+-- Uses gen_random_uuid() as base, then overrides first 6 bytes with timestamp
 
 -- Enable pgcrypto extension for gen_random_bytes()
 CREATE EXTENSION IF NOT EXISTS pgcrypto;
 
--- Create or replace the uuid_generate_v7 function
+-- Simple UUID v7 function that works with PostgreSQL's type system
 CREATE OR REPLACE FUNCTION uuid_generate_v7()
 RETURNS uuid AS $$
 DECLARE
-    unix_ts_ms bigint;
-    uuid_bytes bytea;
+    v_time double precision;
+    v_secs bigint;
+    v_msec int;
+    v_random bytea;
+    v_uuid bytea;
+    v_timestamp bytea;
 BEGIN
-    -- Get current Unix timestamp in milliseconds
-    unix_ts_ms := (EXTRACT(EPOCH FROM clock_timestamp()) * 1000)::bigint;
+    -- Get current time
+    v_time := extract(epoch from clock_timestamp());
+    v_secs := floor(v_time);
+    v_msec := floor((v_time - v_secs) * 1000);
     
-    -- Build the UUID bytes:
-    -- First 6 bytes: timestamp (48 bits)
-    -- Next 2 bytes: version (4 bits) + random (12 bits)
-    -- Last 8 bytes: variant (2 bits) + random (62 bits)
-    uuid_bytes := set_byte(
-        set_byte(
-            set_byte(
-                set_byte(
-                    set_byte(
-                        set_byte(
-                            gen_random_bytes(16),
-                            0, (unix_ts_ms >> 40)::int
-                        ),
-                        1, (unix_ts_ms >> 32)::int
-                    ),
-                    2, (unix_ts_ms >> 24)::int
-                ),
-                3, (unix_ts_ms >> 16)::int
-            ),
-            4, (unix_ts_ms >> 8)::int
-        ),
-        5, unix_ts_ms::int
-    );
+    -- Generate random bytes for the rest
+    v_random := gen_random_bytes(10);
     
-    -- Set version 7 (0111) in byte 6
-    uuid_bytes := set_byte(uuid_bytes, 6, (get_byte(uuid_bytes, 6) & 15) | 112);
+    -- Build timestamp bytes (6 bytes = 48 bits)
+    v_timestamp := decode(lpad(to_hex(v_secs * 1000 + v_msec), 12, '0'), 'hex');
+    
+    -- Combine: timestamp (6 bytes) + random (10 bytes)
+    v_uuid := v_timestamp || v_random;
+    
+    -- Set version 7 (0111) in byte 6 (bits 4-7)
+    v_uuid := set_byte(v_uuid, 6, (get_byte(v_uuid, 6) & 15) | 112);
     
     -- Set variant RFC 4122 (10xx) in byte 8
-    uuid_bytes := set_byte(uuid_bytes, 8, (get_byte(uuid_bytes, 8) & 63) | 128);
+    v_uuid := set_byte(v_uuid, 8, (get_byte(v_uuid, 8) & 63) | 128);
     
-    RETURN encode(uuid_bytes, 'hex')::uuid;
+    RETURN encode(v_uuid, 'hex')::uuid;
 END;
 $$ LANGUAGE plpgsql VOLATILE;
 
diff --git a/seeder-api/src/seeders/users.js b/seeder-api/src/seeders/users.js
index 901ea15..21f8268 100644
--- a/seeder-api/src/seeders/users.js
+++ b/seeder-api/src/seeders/users.js
@@ -41,9 +41,9 @@ export async function seedUsers() {
 
         // 2. Create Company Admins
         const companyAdmins = [
-            { identifier: 'takeshi_yamamoto', fullName: 'Takeshi Yamamoto', company: 'TechCorp', email: 'takeshi@techcorp.com', pass: 'Takeshi@2025', roles: ['admin', 'company'] },
-            { identifier: 'kenji', fullName: 'Kenji Tanaka', company: 'AppMakers', email: 'kenji@appmakers.mobile', pass: 'Takeshi@2025', roles: ['admin', 'company'] },
-            { identifier: 'maria_santos', fullName: 'Maria Santos', company: 'DesignHub', email: 'maria@designhub.com', pass: 'User@2025', roles: ['recruiter', 'company'] }
+            { identifier: 'takeshi_yamamoto', fullName: 'Takeshi Yamamoto', company: 'TechCorp', email: 'takeshi@techcorp.com', pass: 'Takeshi@2025', roles: ['companyAdmin'] },
+            { identifier: 'kenji', fullName: 'Kenji Tanaka', company: 'AppMakers', email: 'kenji@appmakers.mobile', pass: 'Takeshi@2025', roles: ['companyAdmin'] },
+            { identifier: 'maria_santos', fullName: 'Maria Santos', company: 'DesignHub', email: 'maria@designhub.com', pass: 'User@2025', roles: ['recruiter'] }
         ];
 
         for (const admin of companyAdmins) {