Added app settings service

projects/planner/src/app/shared/ApplicationSettings.spec.ts

@@ -0,0 +1,35 @@
+import { TestBed } from '@angular/core/testing';
+import { ApplicationSettingsService } from './ApplicationSettings';
+import { UnitConversion } from './UnitConversion';
+
+describe('ApplicationSettingsService', () => {
+    let sut: ApplicationSettingsService;
+
+    beforeEach(async () => {
+        await TestBed.configureTestingModule({
+            declarations: [],
+            imports: [],
+            providers: [
+                ApplicationSettingsService, UnitConversion
+            ]
+        }).compileComponents();
+
+        sut = TestBed.inject(ApplicationSettingsService);
+    });
+
+    it('Applies gas density', () => {
+        sut.maxGasDensity = 5.3;
+        expect(sut.maxGasDensity).toBeCloseTo(5.3, 3);
+    });
+
+    describe('Imperial units', () => {
+        beforeEach(() => {
+            const units = TestBed.inject(UnitConversion);
+            units.imperialUnits = true;
+        });
+
+        it('Applies gas density in lbs/cuft', () => {
+            expect(sut.maxGasDensity).toBeCloseTo(0.35583938, 8);
+        });
+    });
+});

projects/planner/src/app/shared/ApplicationSettings.ts

@@ -0,0 +1,30 @@
+import { Injectable } from '@angular/core';
+import { UnitConversion } from './UnitConversion';
+import { GasDensity } from 'scuba-physics';
+
+// TODO AppSettings:
+// * add to normalization service
+// * Add to application serialization settings
+// * Don't add to url
+
+export class AppSettings {
+    public maxGasDensity = GasDensity.recommendedMaximum;
+    public priamryTankReserve = 30;
+    public stageTankReserve = 30;
+}
+
+@Injectable()
+export class ApplicationSettingsService {
+    public appSettings = new AppSettings();
+
+    constructor(private units: UnitConversion) {
+    }
+
+    public get maxGasDensity(): number {
+        return this.units.fromGramPerLiter(this.appSettings.maxGasDensity);
+    }
+
+    public set maxGasDensity(value: number) {
+        this.appSettings.maxGasDensity = this.units.toGramPerLiter(value);
+    }
+}

projects/planner/src/app/shared/UnitConversion.ts

@@ -134,6 +134,10 @@ export class UnitConversion {
         return this.current.fromGramPerLiter(density);
     }
 
+    public toGramPerLiter(density: number): number {
+        return this.current.toGramPerLiter(density);
+    }
+
     public fromKilogram(weight: number): number {
         return this.current.fromKilogram(weight);
     }
@@ -173,7 +177,7 @@ export interface RangeConstants {
     duration: [number, number];
     durationLabel: string;
     altitude: [number, number];
-    altitudeLevels: [number, number, number, number]
+    altitudeLevels: [number, number, number, number];
     altitudeLabel: string;
     altitudePressure: [number, number];
     speed: [number, number];