feat: add index type to response meta; correct unit for MSAVI meta

Author: wherop

backend/src/routes/sat_index_router.py

@@ -118,7 +118,7 @@ async def get_msavi_data(
             "endDate": int(rounded_end_date.timestamp()),
             "temporalResolution": TemporalResolution[temporalResolution].value,
             "aggregation": AggregationMethod[aggregation].value,
-            "unit": Unit.NORMALIZED_DIFFERENCE.value,
+            "unit": Unit.DIMENSIONLESS.value,
         },
         "data": data,
     }

backend/src/validation/models.py

@@ -2,7 +2,7 @@
 
 from pydantic import BaseModel
 
-from src.constants import AggregationMethod, LocationName, TemporalResolution, Unit
+from src.constants import AggregationMethod, LocationName, TemporalResolution, Unit, IndexType
 
 
 class DataPoint(BaseModel):
@@ -28,6 +28,7 @@ class TemperatureResponse(BaseModel):
 
 
 class NDVIMetaResponse(BaseMeta):
+    indexType: IndexType = IndexType.NDVI
     unit: Unit = Unit.NORMALIZED_DIFFERENCE
 
 
@@ -36,6 +37,7 @@ class NDVIResponse(BaseMeta):
     data: List[DataPoint]
 
 class MSAVIMetaResponse(BaseMeta):
+    indexType: IndexType = IndexType.MSAVI
     unit: Unit = Unit.DIMENSIONLESS
 
 class MSAVIResponse(BaseMeta):