refactor: sql-tools (#19717)

server/src/sql-tools/transformers/table.transformer.ts

@@ -0,0 +1,44 @@
+import { asColumnComment, getColumnModifiers, getColumnType } from 'src/sql-tools/helpers';
+import { asColumnAlter } from 'src/sql-tools/transformers/column.transformer';
+import { SqlTransformer } from 'src/sql-tools/transformers/types';
+import { DatabaseTable, SchemaDiff } from 'src/sql-tools/types';
+
+export const transformTables: SqlTransformer = (item: SchemaDiff) => {
+  switch (item.type) {
+    case 'TableCreate': {
+      return asTableCreate(item.table);
+    }
+
+    case 'TableDrop': {
+      return asTableDrop(item.tableName);
+    }
+
+    default: {
+      return false;
+    }
+  }
+};
+
+const asTableCreate = (table: DatabaseTable): string[] => {
+  const tableName = table.name;
+  const columnsTypes = table.columns
+    .map((column) => `"${column.name}" ${getColumnType(column)}` + getColumnModifiers(column))
+    .join(', ');
+  const items = [`CREATE TABLE "${tableName}" (${columnsTypes});`];
+
+  for (const column of table.columns) {
+    if (column.comment) {
+      items.push(asColumnComment(tableName, column.name, column.comment));
+    }
+
+    if (column.storage) {
+      items.push(...asColumnAlter(tableName, column.name, { storage: column.storage }));
+    }
+  }
+
+  return items;
+};
+
+const asTableDrop = (tableName: string): string => {
+  return `DROP TABLE "${tableName}";`;
+};