From b6a36cd86092e49b9706fe85c152ddf5108f002c Mon Sep 17 00:00:00 2001
From: cesnimda <dj@cesnimda.co.uk>
Date: Thu, 9 Apr 2026 21:00:04 +0200
Subject: [PATCH] Repair MySQL auto increment drift for core tables

---
 JobTrackerApi/Program.cs | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/JobTrackerApi/Program.cs b/JobTrackerApi/Program.cs
index edc9752..2c99d61 100644
--- a/JobTrackerApi/Program.cs
+++ b/JobTrackerApi/Program.cs
@@ -861,6 +861,42 @@ CREATE TABLE IF NOT EXISTS "TailoredCvDrafts" (
                 ddlCmd.ExecuteNonQuery();
             }
 
+            static bool MySqlIntPrimaryKeyIsAutoIncrement(MySqlConnection c, string table, string column)
+            {
+                using var cmd = c.CreateCommand();
+                cmd.CommandText = @"SELECT EXTRA
+FROM INFORMATION_SCHEMA.COLUMNS
+WHERE TABLE_SCHEMA = @schema AND TABLE_NAME = @table AND COLUMN_NAME = @column
+LIMIT 1;";
+                cmd.Parameters.AddWithValue("@schema", c.Database);
+                cmd.Parameters.AddWithValue("@table", table);
+                cmd.Parameters.AddWithValue("@column", column);
+                var extra = cmd.ExecuteScalar()?.ToString() ?? string.Empty;
+                return extra.Contains("auto_increment", StringComparison.OrdinalIgnoreCase);
+            }
+
+            static void EnsureMySqlAutoIncrementPrimaryKey(MySqlConnection c, string table, string column)
+            {
+                if (!HasMySqlTable(c, table) || !MySqlColumnExists(c, table, column) || MySqlIntPrimaryKeyIsAutoIncrement(c, table, column))
+                {
+                    return;
+                }
+
+                using var cmd = c.CreateCommand();
+                cmd.CommandText = $"ALTER TABLE `{table}` MODIFY COLUMN `{column}` int NOT NULL AUTO_INCREMENT;";
+                cmd.ExecuteNonQuery();
+            }
+
+            EnsureMySqlAutoIncrementPrimaryKey(conn, "Companies", "Id");
+            EnsureMySqlAutoIncrementPrimaryKey(conn, "JobApplications", "Id");
+            EnsureMySqlAutoIncrementPrimaryKey(conn, "Correspondences", "Id");
+            EnsureMySqlAutoIncrementPrimaryKey(conn, "Attachments", "Id");
+            EnsureMySqlAutoIncrementPrimaryKey(conn, "JobEvents", "Id");
+            EnsureMySqlAutoIncrementPrimaryKey(conn, "GmailConnections", "Id");
+            EnsureMySqlAutoIncrementPrimaryKey(conn, "CvUploadArtifacts", "Id");
+            EnsureMySqlAutoIncrementPrimaryKey(conn, "CvExtractionRuns", "Id");
+            EnsureMySqlAutoIncrementPrimaryKey(conn, "TailoredCvDrafts", "Id");
+
             EnsureMySqlColumn(conn, "Companies", "OwnerUserId", "ALTER TABLE `Companies` ADD COLUMN `OwnerUserId` varchar(255) NULL;");
             EnsureMySqlColumn(conn, "Companies", "Source", "ALTER TABLE `Companies` ADD COLUMN `Source` longtext NULL;");
             EnsureMySqlColumn(conn, "Companies", "RecruiterName", "ALTER TABLE `Companies` ADD COLUMN `RecruiterName` longtext NULL;");