refactor: sql-tools (#19717)

server/src/sql-tools/comparers/enum.comparer.ts

@@ -0,0 +1,38 @@
+import { Comparer, DatabaseEnum, Reason } from 'src/sql-tools/types';
+
+export const compareEnums: Comparer<DatabaseEnum> = {
+  onMissing: (source) => [
+    {
+      type: 'EnumCreate',
+      enum: source,
+      reason: Reason.MissingInTarget,
+    },
+  ],
+  onExtra: (target) => [
+    {
+      type: 'EnumDrop',
+      enumName: target.name,
+      reason: Reason.MissingInSource,
+    },
+  ],
+  onCompare: (source, target) => {
+    if (source.values.toString() !== target.values.toString()) {
+      // TODO add or remove values if the lists are different or the order has changed
+      const reason = `enum values has changed (${source.values} vs ${target.values})`;
+      return [
+        {
+          type: 'EnumDrop',
+          enumName: source.name,
+          reason,
+        },
+        {
+          type: 'EnumCreate',
+          enum: source,
+          reason,
+        },
+      ];
+    }
+
+    return [];
+  },
+};