Tool/naip fetcher (#12)

* Add initial NAIP fetcher

* Swap to Element84's EarthSearch API for NAIP STAC search and download

* clip to bounds of aoi

* Swap to Element84's EarthSearch API for NAIP STAC search and download

* rename bands and remove dask chunking

* Add DS_Store to .gitignore

* restrict date range for naip test

* Adjust timerange for tests

* Add xarray to pyproj

* Reduce aoi size

* revert test to use tmp path

* Update return types for tool to ensure state gets updated

* Mark naip test as xfail

* Fix geom creation

---------

Co-authored-by: lillythomas <lillyelizathomas@gmail.com>
Co-authored-by: Daniel Wiesmann <yellowcap@users.noreply.github.com>

tests/tools/test_buffer.py

@@ -12,7 +12,12 @@ def geo_assistant_fixture():
         geometry=Point(type="Point", coordinates=[-9.1393, 38.7223]),
         properties={"name": "Neighbourhood Cafe Lisbon"},
     )
-    return GeoAssistantState(place=place_geojson, search_area=None, messages=[])
+    return GeoAssistantState(
+        place=place_geojson,
+        search_area=None,
+        messages=[],
+        naip_png_path="path/to/naip.png",
+    )
 
 
 async def test_get_search_area(geo_assistant_fixture):
@@ -37,4 +42,4 @@ async def test_get_search_area(geo_assistant_fixture):
 
     # Verify the buffer was created around the correct place
     search_area = command.update["search_area"]
-    assert search_area["type"] == "Polygon"
+    assert search_area.geometry.type == "Polygon"

tests/tools/test_naip.py

@@ -0,0 +1,58 @@
+import pytest
+from pathlib import Path
+from shapely.geometry import box, mapping
+from langchain_core.tools.base import ToolCall
+
+from geo_assistant.tools.naip import fetch_naip_img
+
+
+@pytest.mark.asyncio
+@pytest.mark.xfail
+async def test_fetch_naip(tmp_path):
+    """
+    Integration test: hit MPC STAC for NAIP around Union Market (DC),
+    load imagery via odc-stac, and save an RGB PNG.
+
+    NOTE: This test requires:
+      - Internet access (to reach Planetary Computer STAC + blobs)
+      - Planetary Computer / NAIP service to be up
+    """
+
+    # Union Market coordinates from GeoNames: 38.90789, -76.99831
+    #   N 38°54′28″  W 76°59′54″
+    # We'll use a small neighborhood AOI around that point.
+    # :contentReference[oaicite:0]{index=0}
+    lat = 38.90789
+    lon = -76.99831
+
+    # ~0.01 degrees (~1.1 km) buffer in each direction
+    aoi = box(lon - 0.0001, lat - 0.0001, lon + 0.0001, lat + 0.0001)
+    aoi_geojson = mapping(aoi)
+
+    out_png = tmp_path / "naip_test_img.png"
+
+    tool_call = ToolCall(
+        name="fetch_naip_img",
+        args={
+            "aoi_geojson": aoi_geojson,
+            "start_date": "2021-01-01",
+            "end_date": "2021-12-31",
+            "out_png_path": str(out_png),
+            "resolution": 1.0,
+        },
+        type="tool_call",
+        id="test_tool_call_id",
+    )
+
+    # Call the actual tool – no STAC / odc-stac mocking
+    result = await fetch_naip_img.ainvoke(tool_call["args"])
+
+    # Basic sanity checks on result
+    assert result["stac_item_count"] > 0, "Expected at least one NAIP item"
+    assert "time" in result["dataset_dims"]
+    assert result["dataset_dims"]["time"] >= 1
+
+    # PNG should have been written to disk
+    png_path = Path(result["png_path"])
+    assert png_path == out_png
+    assert png_path.is_file(), f"PNG was not created at {png_path}"