refactor: sql-tools (#19717)

server/src/sql-tools/processors/foreign-key-column.processor.ts

@@ -0,0 +1,61 @@
+import { asForeignKeyConstraintName, asKey } from 'src/sql-tools/helpers';
+import { ActionType, ConstraintType, Processor } from 'src/sql-tools/types';
+
+export const processForeignKeyColumns: Processor = (builder, items) => {
+  for (const {
+    item: { object, propertyName, options, target },
+  } of items.filter((item) => item.type === 'foreignKeyColumn')) {
+    const { table, column } = builder.getColumnByObjectAndPropertyName(object, propertyName);
+    if (!table) {
+      builder.warnMissingTable('@ForeignKeyColumn', object);
+      continue;
+    }
+
+    if (!column) {
+      // should be impossible since they are pre-created in `column.processor.ts`
+      builder.warnMissingColumn('@ForeignKeyColumn', object, propertyName);
+      continue;
+    }
+
+    const referenceTable = builder.getTableByObject(target());
+    if (!referenceTable) {
+      builder.warnMissingTable('@ForeignKeyColumn', object, propertyName);
+      continue;
+    }
+
+    const columnNames = [column.name];
+    const referenceColumns = referenceTable.columns.filter((column) => column.primary);
+
+    // infer FK column type from reference table
+    if (referenceColumns.length === 1) {
+      column.type = referenceColumns[0].type;
+    }
+
+    const referenceColumnNames = referenceColumns.map((column) => column.name);
+    const name = options.constraintName || asForeignKeyConstraintName(table.name, columnNames);
+
+    table.constraints.push({
+      name,
+      tableName: table.name,
+      columnNames,
+      type: ConstraintType.FOREIGN_KEY,
+      referenceTableName: referenceTable.name,
+      referenceColumnNames,
+      onUpdate: options.onUpdate as ActionType,
+      onDelete: options.onDelete as ActionType,
+      synchronize: options.synchronize ?? true,
+    });
+
+    if (options.unique || options.uniqueConstraintName) {
+      table.constraints.push({
+        name: options.uniqueConstraintName || asRelationKeyConstraintName(table.name, columnNames),
+        tableName: table.name,
+        columnNames,
+        type: ConstraintType.UNIQUE,
+        synchronize: options.synchronize ?? true,
+      });
+    }
+  }
+};
+
+const asRelationKeyConstraintName = (table: string, columns: string[]) => asKey('REL_', table, columns);