feat: aggregation layer metadata (#234)

* feat: aggregation layer metadata

* refactor: stricter footprint type

* refactor: naming convention

src/models/layerMetadata/aggregatedLayerMetadata.ts

@@ -0,0 +1,31 @@
+import type { GeoJSON, MultiPolygon, Polygon } from 'geojson';
+import type { IMetadataCommonModel } from './interfaces/metadataCommonModel';
+import type { ILayerMetadata } from './layerMetadata';
+
+type NonNullableRecord<T extends Record<PropertyKey, unknown>> = {
+  [K in keyof T]-?: NonNullable<T[K]>;
+};
+
+type FlatArraysInRecord<T extends Record<PropertyKey, unknown>> = {
+  [K in keyof T]: T[K] extends (infer I)[] ? I : T[K];
+};
+
+type MakePolygonalRecord<T, P extends keyof T, Q = GeoJSON> = NonNullable<T[P]> extends Q ? Record<P, Polygon | MultiPolygon> : never;
+
+export interface AggregationLayerMetadata
+  extends NonNullableRecord<
+      Pick<
+        ILayerMetadata,
+        | 'imagingTimeBeginUTC'
+        | 'imagingTimeEndUTC'
+        | 'maxResolutionDeg'
+        | 'minResolutionDeg'
+        | 'maxResolutionMeter'
+        | 'minResolutionMeter'
+        | 'maxHorizontalAccuracyCE90'
+        | 'minHorizontalAccuracyCE90'
+        | 'productBoundingBox'
+      >
+    >,
+    FlatArraysInRecord<NonNullableRecord<Pick<ILayerMetadata, 'sensors'>>>,
+    MakePolygonalRecord<IMetadataCommonModel, 'footprint'> {}