Fuel Grid PMTiles (#4144)

- Simple script for quickly regenerating fuel grid pmtiles locally when we get a new fuel grid
- Closes SFMS: Fuel Layer Raster translated into a PMTile #4125

api/app/utils/generate_fuel_grid_pmtiles.py

@@ -0,0 +1,30 @@
+from tempfile import TemporaryDirectory
+
+from app import config
+from app.utils.pmtiles import tippecanoe_wrapper, write_geojson
+from app.utils.polygonize import polygonize_in_memory
+from app.utils.s3 import set_s3_gdal_config
+
+
+def generate_fuel_pmtiles(fuel_grid_path: str, output_path: str):
+    """
+    Simple function for local use to regenerate fuel grid pmtiles annually when the new fuel grid raster
+    is received from BCWS Geospatial. Typically stored in s3: {bucket}/psu/pmtiles/fuel
+    """
+    set_s3_gdal_config()
+    with polygonize_in_memory(fuel_grid_path, "fuel", "fuel") as layer, TemporaryDirectory() as temp_dir:
+        temp_geojson = write_geojson(layer, temp_dir)
+
+        tippecanoe_wrapper(temp_geojson, output_path, min_zoom=4, max_zoom=12)
+
+
+def main():
+    bucket = config.get("OBJECT_STORE_BUCKET")
+    fuel_grid = f"/vsis3/{bucket}/sfms/static/fbp2024.tif"  # input fuel grid stored in s3
+    output_path = "/output/to/fbp2024.pmtiles"  # local output
+
+    generate_fuel_pmtiles(fuel_grid, output_path)
+
+
+if __name__ == "__main__":
+    main()