feat: add default value capability (#2544)

* feat: add default value capability

* feat: update seeds with default value

server/src/metadata/field-metadata/utils/__tests__/serialize-default-value.spec.ts

@@ -0,0 +1,43 @@
+import { BadRequestException } from '@nestjs/common';
+
+import { serializeDefaultValue } from 'src/metadata/field-metadata/utils/serialize-default-value';
+
+describe('serializeDefaultValue', () => {
+  it('should return null for undefined defaultValue', () => {
+    expect(serializeDefaultValue()).toBeNull();
+  });
+
+  it('should handle uuid dynamic default value', () => {
+    expect(serializeDefaultValue({ type: 'uuid' })).toBe('uuid_generate_v4()');
+  });
+
+  it('should handle now dynamic default value', () => {
+    expect(serializeDefaultValue({ type: 'now' })).toBe('now()');
+  });
+
+  it('should throw BadRequestException for invalid dynamic default value type', () => {
+    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+    // @ts-expect-error Just for testing purposes
+    expect(() => serializeDefaultValue({ type: 'invalid' })).toThrow(
+      BadRequestException,
+    );
+  });
+
+  it('should handle string static default value', () => {
+    expect(serializeDefaultValue('test')).toBe("'test'");
+  });
+
+  it('should handle number static default value', () => {
+    expect(serializeDefaultValue(123)).toBe(123);
+  });
+
+  it('should handle boolean static default value', () => {
+    expect(serializeDefaultValue(true)).toBe(true);
+    expect(serializeDefaultValue(false)).toBe(false);
+  });
+
+  it('should handle Date static default value', () => {
+    const date = new Date('2023-01-01');
+    expect(serializeDefaultValue(date)).toBe(`'${date.toISOString()}'`);
+  });
+});