Add layer values

projects/common-map/src/fm-map/effects/map.effects.ts

@@ -3,8 +3,8 @@ import { Injectable } from '@angular/core';
 import { Store, Action } from '@ngrx/store';
 import { Effect, Actions,ofType } from '@ngrx/effects';
 
-import { EMPTY, Observable , of } from 'rxjs';
-import { withLatestFrom, switchMap, map, catchError, mergeMap } from 'rxjs/operators';
+import { EMPTY, Observable , of,merge} from 'rxjs';
+import { withLatestFrom, switchMap, map, catchError, mergeMap,tap } from 'rxjs/operators';
 
 import {GeoJSON,WKT} from 'ol/format';
 import {Feature} from 'ol';
@@ -297,6 +297,55 @@ export class MapEffects {
     return of(newAction);
   }
 
+   @Effect()
+   getLayerValue$: Observable<Action> = this.actions$.pipe(
+    ofType(mapActions.GETLAYERVALUE),
+    switchMap((action:mapActions.GetLayerValue) => {
+      var l = action.itemLayer.item.data["layers"][action.itemLayer.layerIndex];
+      var scale = l.scale?l.scale:1;
+      return this.itemService$.getLayerValue(action.itemLayer.item.code,action.itemLayer.layerIndex,action.x,action.y).pipe(
+        switchMap((v: number) => {
+          let a=[];
+          if(v) a.push(new mapActions.GetLayerValueSuccess({date:"",value:v*scale,layerName:l.name,quantity:l.quantity,unit:l.unit}));        
+          return a;
+        }))
+      }
+  ));
+
+  @Effect()
+  updateLayerValuesOnLayerAddedOrRemoved$: Observable<Action> = this.actions$.pipe(
+     ofType(mapActions.ADDLAYER,mapActions.REMOVELAYER,mapActions.SELECTITEM),
+     withLatestFrom(this.store$.select(mapReducers.selectGetLayerValuesX)),
+     withLatestFrom(this.store$.select(mapReducers.selectGetLayerValuesY)),
+     map(([[action,x],y]) => new mapActions.SetLayerValuesLocation(x,y))
+  );
+
+
+  @Effect()
+  getLayerValues$: Observable<Action> = this.actions$.pipe(
+    ofType(mapActions.SETLAYERVALUESLOCATION),
+    withLatestFrom(this.store$.select(mapReducers.selectGetSelectedItemLayer)),
+    withLatestFrom(this.store$.select(mapReducers.selectGetLayerValuesEnabled)),
+    withLatestFrom(this.store$.select(mapReducers.selectGetOverlayLayers)),
+    switchMap(([[[action, selected], enabled],overlayLayers]) => {
+      let layers = [];      
+      if(selected) layers.push(selected);
+      overlayLayers.forEach((ol) => {
+        if(ol!=selected) layers.push(ol);
+      });
+      let a = action as mapActions.SetLayerValuesLocation;
+      let actions = [];
+      if(enabled) {      
+        layers.forEach((ol) => {
+           if("vnd.farmmaps.itemtype.shape.processed,vnd.farmmaps.itemtype.geotiff.processed".indexOf(ol.item.itemType)>=0) {
+             actions.push(new mapActions.GetLayerValue(ol,a.x,a.y));
+           }
+         });
+      } 
+      return actions;
+    }));
+    
+
   @Effect()
   setState$: Observable<Action> = this.actions$.pipe(
     ofType(mapActions.SETSTATE),