chore: enable foreign key constraints for new sqlite databases

utils/db.go

@@ -0,0 +1,32 @@
+package utils
+
+import (
+	"github.com/emvi/logbuch"
+	"gorm.io/gorm"
+)
+
+func IsCleanDB(db *gorm.DB) bool {
+	if db.Dialector.Name() == "sqlite" {
+		var count int64
+		if err := db.Raw("SELECT count(*) from sqlite_master WHERE type = 'table'").Scan(&count).Error; err != nil {
+			logbuch.Error("failed to check if database is clean - '%v'", err)
+			return false
+		}
+		return count == 0
+	}
+	logbuch.Warn("IsCleanDB is not yet implemented for dialect '%s'", db.Dialector.Name())
+	return false
+}
+
+func HasConstraints(db *gorm.DB) bool {
+	if db.Dialector.Name() == "sqlite" {
+		var count int64
+		if err := db.Raw("SELECT count(*) from sqlite_master WHERE sql LIKE '%CONSTRAINT%'").Scan(&count).Error; err != nil {
+			logbuch.Error("failed to check if database has constraints - '%v'", err)
+			return false
+		}
+		return count != 0
+	}
+	logbuch.Warn("HasForeignKeyConstraints is not yet implemented for dialect '%s'", db.Dialector.Name())
+	return false
+}