First release of open core

pkg/datastore/migrate.go

@@ -0,0 +1,58 @@
+package datastore
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+)
+
+// RunMigrations ensures the database schema matches the binary version
+func RunMigrations(db *sql.DB, migrations []string) error {
+	_, err := db.Exec(`
+		CREATE TABLE IF NOT EXISTS schema_migrations (
+			version INTEGER PRIMARY KEY,
+			applied_at DATETIME DEFAULT CURRENT_TIMESTAMP
+		)
+	`)
+	if err != nil {
+		return fmt.Errorf("failed to create schema_migrations table: %v", err)
+	}
+
+	var currentVersion int
+	err = db.QueryRow("SELECT IFNULL(MAX(version), 0) FROM schema_migrations").Scan(&currentVersion)
+	if err != nil && err != sql.ErrNoRows {
+		return fmt.Errorf("failed to read current schema version: %v", err)
+	}
+
+	for i, query := range migrations {
+		migrationVersion := i + 1
+
+		if migrationVersion > currentVersion {
+			log.Printf("🚀 Applying database migration v%d...", migrationVersion)
+
+			// Start a transaction so if the ALTER TABLE fails, it rolls back cleanly
+			tx, err := db.Begin()
+			if err != nil {
+				return err
+			}
+
+			if _, err := tx.Exec(query); err != nil {
+				tx.Rollback()
+				return fmt.Errorf("migration v%d failed: %v", migrationVersion, err)
+			}
+
+			if _, err := tx.Exec("INSERT INTO schema_migrations (version) VALUES (?)", migrationVersion); err != nil {
+				tx.Rollback()
+				return fmt.Errorf("failed to record migration v%d: %v", migrationVersion, err)
+			}
+
+			if err := tx.Commit(); err != nil {
+				return err
+			}
+
+			log.Printf("✅ Migration v%d applied successfully.", migrationVersion)
+		}
+	}
+
+	return nil
+}