feat: segments service DI (#4376)

src/lib/features/index.ts

@@ -3,3 +3,4 @@ export * from './export-import-toggles/createExportImportService';
 export * from './feature-toggle/createFeatureToggleService';
 export * from './project/createProjectService';
 export * from './change-request-access-service/createChangeRequestAccessReadModel';
+export * from './segment/createSegmentService';

src/lib/features/segment/createSegmentService.ts

@@ -0,0 +1,47 @@
+import { Db, IUnleashConfig } from 'lib/server-impl';
+import EventStore from '../../db/event-store';
+import { SegmentService } from '../../services';
+import FakeEventStore from '../../../test/fixtures/fake-event-store';
+import { ISegmentService } from '../../segments/segment-service-interface';
+import FeatureStrategiesStore from '../../db/feature-strategy-store';
+import SegmentStore from '../../db/segment-store';
+import FakeSegmentStore from '../../../test/fixtures/fake-segment-store';
+import FakeFeatureStrategiesStore from '../../../test/fixtures/fake-feature-strategies-store';
+
+export const createSegmentService = (
+    db: Db,
+    config: IUnleashConfig,
+): ISegmentService => {
+    const { eventBus, getLogger, flagResolver } = config;
+    const eventStore = new EventStore(db, getLogger);
+    const segmentStore = new SegmentStore(
+        db,
+        eventBus,
+        getLogger,
+        flagResolver,
+    );
+    const featureStrategiesStore = new FeatureStrategiesStore(
+        db,
+        eventBus,
+        getLogger,
+        flagResolver,
+    );
+
+    return new SegmentService(
+        { segmentStore, featureStrategiesStore, eventStore },
+        config,
+    );
+};
+
+export const createFakeSegmentService = (
+    config: IUnleashConfig,
+): ISegmentService => {
+    const eventStore = new FakeEventStore();
+    const segmentStore = new FakeSegmentStore();
+    const featureStrategiesStore = new FakeFeatureStrategiesStore();
+
+    return new SegmentService(
+        { segmentStore, featureStrategiesStore, eventStore },
+        config,
+    );
+};