feat: added stats endpoints

solution/services/backend/api/v1/stats/views.py

@@ -0,0 +1,77 @@
+from http import HTTPStatus as status
+from typing import Any
+from uuid import UUID
+
+from django.http import HttpRequest
+from django.shortcuts import get_object_or_404
+from ninja import Router
+
+from api.v1 import schemas as global_schemas
+from api.v1.stats import schemas
+from apps.campaign.models import Advertiser, Campaign
+
+router = Router(tags=["stats"])
+
+
+@router.get(
+    "/campaigns/{campaign_id}",
+    response={
+        status.OK: schemas.Stat,
+        status.BAD_REQUEST: global_schemas.BadRequestError,
+        status.NOT_FOUND: global_schemas.NotFoundError,
+    },
+)
+def get_campaign_statistics(
+    request: HttpRequest, campaign_id: UUID
+) -> tuple[status, dict[str, Any]]:
+    campaign = get_object_or_404(Campaign, id=campaign_id)
+
+    return status.OK, campaign.get_statistics()
+
+
+@router.get(
+    "/campaigns/{campaign_id}/daily",
+    response={
+        status.OK: list[schemas.DailyStat],
+        status.BAD_REQUEST: global_schemas.BadRequestError,
+        status.NOT_FOUND: global_schemas.NotFoundError,
+    },
+)
+def get_daily_campaign_statistics(
+    request: HttpRequest, campaign_id: UUID
+) -> tuple[status, dict[str, Any]]:
+    campaign = get_object_or_404(Campaign, id=campaign_id)
+
+    return status.OK, campaign.get_daily_statistics()
+
+
+@router.get(
+    "/advertisers/{advertiser_id}",
+    response={
+        status.OK: schemas.Stat,
+        status.BAD_REQUEST: global_schemas.BadRequestError,
+        status.NOT_FOUND: global_schemas.NotFoundError,
+    },
+)
+def get_advertiser_statistics(
+    request: HttpRequest, advertiser_id: UUID
+) -> tuple[status, dict[str, Any]]:
+    advertiser = get_object_or_404(Advertiser, id=advertiser_id)
+
+    return status.OK, advertiser.get_statistics()
+
+
+@router.get(
+    "/advertisers/{advertiser_id}/campaigns/daily",
+    response={
+        status.OK: list[schemas.DailyStat],
+        status.BAD_REQUEST: global_schemas.BadRequestError,
+        status.NOT_FOUND: global_schemas.NotFoundError,
+    },
+)
+def get_daily_advertiser_statistics(
+    request: HttpRequest, advertiser_id: UUID
+) -> tuple[status, dict[str, Any]]:
+    advertiser = get_object_or_404(Advertiser, id=advertiser_id)
+
+    return status.OK, advertiser.get_daily_statistics()