feat: generate and download KMZ files with placemarks

src/backend/app/tasks/task_schemas.py

@@ -267,6 +267,7 @@ class TaskDetailsOut(BaseModel):
     side_overlap: Optional[float] = None
     gsd_cm_px: Optional[float] = None
     gimble_angles_degrees: Optional[int] = None
+    centroid: dict
 
     @field_validator("state", mode="after")
     @classmethod
@@ -312,7 +313,8 @@ async def get_task_details(db: Connection, task_id: uuid.UUID):
                             ),
                             'id', tasks.id
                         ) AS outline,
-
+                        -- Calculate the centroid of the outline
+                        ST_AsGeoJSON(ST_Centroid(tasks.outline))::jsonb AS centroid,
                         te.created_at,
                         te.updated_at,
                         te.state,

src/backend/app/waypoints/waypoint_routes.py

@@ -1,3 +1,4 @@
+import os
 import uuid
 import geojson
 import shutil
@@ -147,7 +148,9 @@ async def get_task_waypoint(
         outfile = outfile = f"/tmp/{uuid.uuid4()}"
         kmz_file = wpml.create_wpml(placemarks, outfile)
         return FileResponse(
-            kmz_file, media_type="application/zip", filename="flight_plan.kmz"
+            kmz_file,
+            media_type="application/zip",
+            filename=f"{task_id}_flight_plan.kmz",
         )
     flight_data = calculate_flight_time_from_placemarks(placemarks)
     return {"results": placemarks, "flight_data": flight_data}
@@ -257,3 +260,23 @@ async def generate_kmz(
         return FileResponse(
             output_file, media_type="application/zip", filename="output.kmz"
         )
+
+
+@router.post("/{task_id}/generate-kmz/")
+async def generate_kmz_with_placemarks(
+    task_id: uuid.UUID, data: waypoint_schemas.PlacemarksFeature
+):
+    try:
+        outfile = f"/tmp/{task_id}_flight_plan.kmz"
+
+        kmz_file = wpml.create_wpml(data.model_dump(), outfile)
+        if not os.path.exists(kmz_file):
+            raise HTTPException(status_code=500, detail="Failed to generate KMZ file.")
+        return FileResponse(
+            kmz_file,
+            media_type="application/zip",
+            filename=f"{task_id}_flight_plan.kmz",
+        )
+
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Error generating KMZ: {str(e)}")

src/backend/app/waypoints/waypoint_schemas.py

@@ -1,5 +1,7 @@
 import json
+from typing import List, Optional
 from pydantic import BaseModel, model_validator
+from geojson_pydantic import FeatureCollection, Feature, Point
 
 
 class PointField(BaseModel):
@@ -12,3 +14,33 @@ def validate_to_json(cls, value):
         if isinstance(value, str):
             return cls(**json.loads(value))
         return value
+
+
+class Properties(BaseModel):
+    altitude: float
+    gimbal_angle: str
+    heading: float
+    index: int
+    speed: float
+    take_photo: bool
+    elevation: Optional[float] = None
+
+
+class Geometry(Point):
+    pass
+
+
+class Feature(Feature):
+    geometry: Geometry
+    properties: Properties
+
+
+class CRS(BaseModel):
+    properties: dict
+    type: str
+
+
+class PlacemarksFeature(FeatureCollection):
+    type: str = "FeatureCollection"
+    crs: Optional[CRS] = None
+    features: List[Feature]