Added basics for scan creation (to be tested after scanstations got added)

ref #67

src/models/actions/CreateScan.ts

@@ -0,0 +1,11 @@
+import { Scan } from '../entities/Scan';
+
+/**
+ * This classed is used to create a new Scan entity from a json body (post request).
+ */
+export abstract class CreateScan {
+    /**
+     * Creates a new Scan entity from this.
+     */
+    public abstract toScan(): Promise<Scan>;
+}

src/models/actions/CreateTrackScan.ts

@@ -0,0 +1,84 @@
+import { IsNotEmpty } from 'class-validator';
+import { getConnection } from 'typeorm';
+import { RunnerNotFoundError } from '../../errors/RunnerErrors';
+import { RunnerCard } from '../entities/RunnerCard';
+import { ScanStation } from '../entities/ScanStation';
+import { TrackScan } from '../entities/TrackScan';
+import { CreateScan } from './CreateScan';
+
+/**
+ * This classed is used to create a new Scan entity from a json body (post request).
+ */
+export class CreateTrackScan extends CreateScan {
+
+    /**
+     * The scan's associated track.
+     * This is used to determine the scan's distance.
+     */
+    @IsNotEmpty()
+    track: number;
+
+    /**
+     * The runnerCard associated with the scan.
+     * This get's saved for documentation and management purposes.
+     */
+    @IsNotEmpty()
+    card: number;
+
+    /**
+     * The scanning station that created the scan.
+     * Mainly used for logging and traceing back scans (or errors)
+     */
+    @IsNotEmpty()
+    station: number;
+
+    /**
+     * Creates a new Track entity from this.
+     */
+    public async toScan(): Promise<TrackScan> {
+        let newScan: TrackScan = new TrackScan();
+
+        newScan.station = await this.getStation();
+        newScan.card = await this.getCard();
+
+        newScan.track = newScan.station.track;
+        newScan.runner = newScan.card.runner;
+
+        if (!newScan.runner) {
+            throw new RunnerNotFoundError();
+        }
+
+        newScan.timestamp = new Date(Date.now()).toString();
+        newScan.valid = await this.validateScan(newScan);
+
+        return newScan;
+    }
+
+    public async getCard(): Promise<RunnerCard> {
+        const track = await getConnection().getRepository(RunnerCard).findOne({ id: this.card }, { relations: ["runner"] });
+        if (!track) {
+            throw new Error();
+        }
+        return track;
+    }
+
+    public async getStation(): Promise<ScanStation> {
+        const track = await getConnection().getRepository(ScanStation).findOne({ id: this.card }, { relations: ["track"] });
+        if (!track) {
+            throw new Error();
+        }
+        return track;
+    }
+
+    public async validateScan(scan: TrackScan): Promise<boolean> {
+        const scans = await getConnection().getRepository(TrackScan).find({ where: { runner: scan.runner }, relations: ["track"] });
+        if (scans.length == 0) { return true; }
+
+        const newestScan = scans[0];
+        if ((new Date(scan.timestamp).getTime() - new Date(newestScan.timestamp).getTime()) > scan.track.minimumLapTime) {
+            return true;
+        }
+
+        return false;
+    }
+}