refactor

src/usecase/purchase/get_placements.py

@@ -0,0 +1,29 @@
+import logging
+from typing import TYPE_CHECKING
+
+from src import domain, dto
+
+from .create_placements import _build_placement_output
+
+if TYPE_CHECKING:
+    from .. import Usecase
+
+log = logging.getLogger(__name__)
+
+
+async def get_placements(self: 'Usecase', input: dto.GetPlacementsInput) -> dto.GetPlacementsOutput:
+    """Get all placements for a project (formerly get_purchases)"""
+    context = await self.ensure_workspace_permission(
+        input.workspace_id, input.user_id, domain.PermissionKey.PLACEMENTS_READ
+    )
+
+    project = await self.database.get_project(input.workspace_id, project_id=input.project_id)
+    if not project:
+        raise domain.ProjectNotFound(input.project_id)
+
+    context.ensure_project_permission(domain.PermissionKey.PLACEMENTS_READ, project.id)
+
+    placements = await self.database.get_project_placements(input.workspace_id, project.id)
+    log.debug('Fetched %s placements for project %s', len(placements), project.id)
+
+    return dto.GetPlacementsOutput(placements=[_build_placement_output(p) for p in placements])