[Feature] Package Pathway Export to CSV (#439)

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Reviewed-on: enviPath/enviPy#439

epdb/legacy_api.py

@@ -46,6 +46,10 @@ from .models import (
 Package = s.GET_PACKAGE_MODEL()
 
 
+def get_package_for_read(user, package_uuid):
+    return PackageManager.get_package_by_id(user, package_uuid)
+
+
 def get_package_for_write(user, package_uuid):
     p = PackageManager.get_package_by_id(user, package_uuid)
     if not PackageManager.writable(user, p):
@@ -2291,3 +2295,38 @@ def predict(request, np: Form[NonPersistent]):
         return 403, {
             "message": f"Getting Setting with id {np.setting_url} failed due to insufficient rights!"
         }
+
+
+##########
+# Export #
+##########
+class PackageExportInSchema(Schema):
+    package_uuid: str
+    additional_information_types: List[str] | None = None
+
+
+@router.get("/export", response={200: Any, 403: Error})
+def export(request, q: Query[PackageExportInSchema]):
+    try:
+        p = get_package_for_read(request.user, q.package_uuid)
+
+        from envipy_additional_information import registry
+        from utilities.misc import PathwayExporter
+
+        ai_types = []
+        if q.additional_information_types is not None:
+            for ai_type in q.additional_information_types:
+                if registry.get_model(ai_type) is None:
+                    return 400, {
+                        "message": f"Exporting Package with id {q.package_uuid} failed as {ai_type} is not a valid additional information type!"
+                    }
+                ai_types.append(ai_type)
+
+        exporter = PathwayExporter(p, add_infs_to_export=ai_types)
+        res = exporter.do_export()
+
+        return res
+    except ValueError:
+        return 403, {
+            "message": f"Exporting Package with id {q.package_uuid} failed due to insufficient rights!"
+        }