fixup! Fix circular dependencies

Author: Jan Kumer

src/layer/AbstractSentinelHubV1OrV2Layer.ts

@@ -4,7 +4,6 @@ import { stringify } from 'query-string';
 
 import { BBox } from '../bbox';
 import { Fis } from '../statistics/Fis';
-import { StatisticsProviderType } from '../statistics/StatisticsProvider';
 import { CACHE_CONFIG_NOCACHE } from '../utils/cacheHandlers';
 import { getAxiosReqParams, RequestConfiguration } from '../utils/cancelRequests';
 import { ensureTimeout } from '../utils/ensureTimeout';
@@ -23,6 +22,7 @@ import {
 } from './const';
 import { fetchLayersFromGetCapabilitiesXml } from './utils';
 import { wmsGetMapUrl } from './wms';
+import { StatisticsProviderType } from '../statistics';
 
 interface ConstructorParameters {
   instanceId?: string | null;

src/layer/AbstractSentinelHubV3Layer.ts

@@ -30,9 +30,9 @@ import { Effects } from '../mapDataManipulation/const';
 import { runEffectFunctions } from '../mapDataManipulation/runEffectFunctions';
 import { Fis } from '../statistics/Fis';
 import { StatisticalApi } from '../statistics/StatisticalApi';
-import { StatisticsProviderType } from '../statistics/StatisticsProvider';
 import { CACHE_CONFIG_30MIN, CACHE_CONFIG_NOCACHE } from '../utils/cacheHandlers';
 import { fetchLayerParamsFromConfigurationService, getSHServiceRootUrl } from './utils';
+import { StatisticsProviderType } from '../statistics/const';
 
 interface ConstructorParameters {
   instanceId?: string | null;

src/layer/BYOCLayer.ts

@@ -25,8 +25,8 @@ import { ProcessingPayload } from './processing';
 import { getAxiosReqParams, RequestConfiguration } from '../utils/cancelRequests';
 import { ensureTimeout } from '../utils/ensureTimeout';
 import { CACHE_CONFIG_30MIN } from '../utils/cacheHandlers';
-import { StatisticsProviderType } from '../statistics/StatisticsProvider';
 import { getSHServiceRootUrl, metersPerPixel } from './utils';
+import { StatisticsProviderType } from '../statistics/const';
 
 interface ConstructorParameters {
   instanceId?: string | null;

src/statistics/StatisticsProvider.ts

@@ -1,12 +1,21 @@
 import { AbstractLayer } from '../layer/AbstractLayer';
 import { GetStatsParams, Stats } from '../layer/const';
 import { RequestConfiguration } from '../utils/cancelRequests';
-
-export enum StatisticsProviderType {
-  FIS = 'FIS',
-  STAPI = 'STAPI',
-}
+import { StatisticsProviderType } from './const';
+import { Fis } from './Fis';
+import { StatisticalApi } from './StatisticalApi';
 
 export interface StatisticsProvider {
   getStats(layer: AbstractLayer, params: GetStatsParams, reqConfig?: RequestConfiguration): Promise<Stats>;
 }
+
+export function getStatisticsProvider(statsProvider: StatisticsProviderType): StatisticsProvider {
+  switch (statsProvider) {
+    case StatisticsProviderType.STAPI:
+      return new StatisticalApi();
+    case StatisticsProviderType.FIS:
+      return new Fis();
+    default:
+      throw new Error(`Unknows statistics provider ${statsProvider}`);
+  }
+}

src/statistics/const.ts

@@ -89,3 +89,8 @@ export type StatisticalApiResponse = {
 
   error?: StatisticalApiResponseError;
 }[];
+
+export enum StatisticsProviderType {
+  FIS = 'FIS',
+  STAPI = 'STAPI',
+}

src/statistics/index.ts

@@ -1,3 +1,4 @@
+export { getStatisticsProvider } from './StatisticsProvider';
 export {
   BandHistogram,
   BandStats,
@@ -7,6 +8,6 @@ export {
   StatisticalApiOutput,
   StatisticalApiPayload,
   StatisticalApiResponse,
+  StatisticsProviderType,
 } from './const';
-export { StatisticsProviderType } from './StatisticsProvider';
 export { StatisticsUtils } from './statistics.utils';