feat: create hasura admin secret decorator

src/decorators/hasura-admin-secret.decorator.spec.ts

@@ -0,0 +1,63 @@
+import { Faker } from 'mockingbird';
+import { ROUTE_ARGS_METADATA } from '@nestjs/common/constants';
+import { HasuraAdminSecret } from './hasura-admin-secret.decorator';
+
+function getParamDecoratorFactory() {
+  class TestDecorator {
+    public getDecoratorValue(@HasuraAdminSecret() value) {
+      console.log(value);
+    }
+  }
+
+  const args = Reflect.getMetadata(
+    ROUTE_ARGS_METADATA,
+    TestDecorator,
+    'getDecoratorValue',
+  );
+  return args[Object.keys(args)[0]].factory;
+}
+
+describe('HasuraAdminSecret Decorator', () => {
+  it('should return the hasura admin secret header', () => {
+    const hasuraAdminSecret = Faker.datatype.string();
+    const mockRequest = {
+      headers: {
+        'x-hasura-admin-secret': hasuraAdminSecret,
+      },
+    };
+
+    const mockContext = {
+      switchToHttp: jest.fn().mockReturnValue({
+        getRequest: jest.fn().mockReturnValue(mockRequest),
+      }),
+    };
+
+    const factory = getParamDecoratorFactory();
+    const resultHasuraAdminSecret = factory(
+      'x-hasura-admin-secret',
+      mockContext,
+    );
+
+    expect(resultHasuraAdminSecret).toBe(hasuraAdminSecret);
+  });
+
+  it('should return undefined if no hasura admin secret header is present', () => {
+    const mockRequest = {
+      headers: {},
+    };
+
+    const mockContext = {
+      switchToHttp: jest.fn().mockReturnValue({
+        getRequest: jest.fn().mockReturnValue(mockRequest),
+      }),
+    };
+
+    const factory = getParamDecoratorFactory();
+    const resultHasuraAdminSecret = factory(
+      'x-hasura-admin-secret',
+      mockContext,
+    );
+
+    expect(resultHasuraAdminSecret).toBeUndefined();
+  });
+});

src/decorators/hasura-admin-secret.decorator.ts

@@ -0,0 +1,8 @@
+import { ExecutionContext, createParamDecorator } from '@nestjs/common';
+
+export const HasuraAdminSecret = createParamDecorator(
+  (_: unknown, context: ExecutionContext): string => {
+    const request = context.switchToHttp().getRequest();
+    return request.headers['x-hasura-admin-secret'];
+  },
+);

src/decorators/index.ts

@@ -1 +1,2 @@
 export * from './authorization-token.decorator';
+export * from './hasura-admin-secret.decorator';