Initial GeoIntel V1 foundation

backend/app/services/project_service.py

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+from __future__ import annotations
+
+import uuid
+
+from sqlalchemy.orm import Session
+
+from app.core.errors import AppError
+from app.models import Project
+from app.schemas.project import ProjectCreate, ProjectRead, ProjectUpdate
+
+
+class ProjectService:
+    @staticmethod
+    def list_projects(db: Session, limit: int = 50, offset: int = 0) -> tuple[list[ProjectRead], int]:
+        query = db.query(Project).filter(Project.status != "deleted").order_by(Project.created_at.desc())
+        total = query.count()
+        items = query.offset(offset).limit(limit).all()
+        return [ProjectRead.model_validate(item) for item in items], total
+
+    @staticmethod
+    def create_project(db: Session, payload: ProjectCreate) -> ProjectRead:
+        project = Project(name=payload.name.strip(), description=(payload.description or "").strip() or None, region=payload.region or "Kempen")
+        db.add(project)
+        db.commit()
+        db.refresh(project)
+        return ProjectRead.model_validate(project)
+
+    @staticmethod
+    def get_project(db: Session, project_id: uuid.UUID) -> ProjectRead | None:
+        project = db.get(Project, project_id)
+        if not project or project.status == "deleted":
+            return None
+        return ProjectRead.model_validate(project)
+
+    @staticmethod
+    def update_project(db: Session, project_id: uuid.UUID, payload: ProjectUpdate) -> ProjectRead | None:
+        project = db.get(Project, project_id)
+        if not project or project.status == "deleted":
+            return None
+
+        payload_data = payload.model_dump(exclude_unset=True)
+        changed = False
+        for key, value in payload_data.items():
+            if value is None:
+                continue
+            setattr(project, key, value)
+            changed = True
+        if not changed:
+            raise AppError(code="NO_CHANGES", message="No updatable fields provided", status_code=422)
+
+        db.add(project)
+        db.commit()
+        db.refresh(project)
+        return ProjectRead.model_validate(project)
+
+    @staticmethod
+    def delete_project(db: Session, project_id: uuid.UUID) -> bool:
+        project = db.get(Project, project_id)
+        if not project or project.status == "deleted":
+            return False
+        project.status = "deleted"
+        db.add(project)
+        db.commit()
+        return True