refactor: sql-tools (#19717)

server/src/sql-tools/processors/index.processor.ts

@@ -0,0 +1,74 @@
+import { Processor } from 'src/sql-tools/types';
+
+export const processIndexes: Processor = (builder, items, config) => {
+  for (const {
+    item: { object, options },
+  } of items.filter((item) => item.type === 'index')) {
+    const table = builder.getTableByObject(object);
+    if (!table) {
+      builder.warnMissingTable('@Check', object);
+      continue;
+    }
+
+    table.indexes.push({
+      name: options.name || builder.asIndexName(table.name, options.columns, options.where),
+      tableName: table.name,
+      unique: options.unique ?? false,
+      expression: options.expression,
+      using: options.using,
+      with: options.with,
+      where: options.where,
+      columnNames: options.columns,
+      synchronize: options.synchronize ?? true,
+    });
+  }
+
+  // column indexes
+  for (const {
+    type,
+    item: { object, propertyName, options },
+  } of items.filter((item) => item.type === 'column' || item.type === 'foreignKeyColumn')) {
+    const { table, column } = builder.getColumnByObjectAndPropertyName(object, propertyName);
+    if (!table) {
+      builder.warnMissingTable('@Column', object);
+      continue;
+    }
+
+    if (!column) {
+      // should be impossible since they are created in `column.processor.ts`
+      builder.warnMissingColumn('@Column', object, propertyName);
+      continue;
+    }
+
+    if (options.index === false) {
+      continue;
+    }
+
+    const isIndexRequested =
+      options.indexName || options.index || (type === 'foreignKeyColumn' && config.createForeignKeyIndexes);
+    if (!isIndexRequested) {
+      continue;
+    }
+
+    const indexName = options.indexName || builder.asIndexName(table.name, [column.name]);
+
+    const isIndexPresent = table.indexes.some((index) => index.name === indexName);
+    if (isIndexPresent) {
+      continue;
+    }
+
+    const isOnlyPrimaryColumn = options.primary && table.columns.filter(({ primary }) => primary === true).length === 1;
+    if (isOnlyPrimaryColumn) {
+      // will have an index created by the primary key constraint
+      continue;
+    }
+
+    table.indexes.push({
+      name: indexName,
+      tableName: table.name,
+      unique: false,
+      columnNames: [column.name],
+      synchronize: options.synchronize ?? true,
+    });
+  }
+};