Moved to a "cleaner" directory structure

ref #11

src/models/entities/TrackScan.ts

@@ -0,0 +1,58 @@
+import { PrimaryGeneratedColumn, Column, ManyToOne, Entity, ChildEntity } from "typeorm";
+import {
+  IsBoolean,
+  IsDateString,
+  IsInt,
+  IsNotEmpty,
+  IsOptional,
+  IsPositive,
+} from "class-validator";
+import { Scan } from "./Scan";
+import { Runner } from "./Runner";
+import { Track } from "./Track";
+import { RunnerCard } from "./RunnerCard";
+import { ScanStation } from "./ScanStation";
+
+/**
+ * Defines the scan interface.
+*/
+@ChildEntity()
+export class TrackScan extends Scan {
+  /**
+   * The associated track.
+   */
+  @IsNotEmpty()
+  @ManyToOne(() => Track, track => track.scans, { nullable: true })
+  track: Track;
+
+  /**
+   * The associated card.
+   */
+  @IsNotEmpty()
+  @ManyToOne(() => RunnerCard, card => card.scans, { nullable: true })
+  card: RunnerCard;
+
+  /**
+   * The scanning station.
+   */
+  @IsNotEmpty()
+  @ManyToOne(() => ScanStation, station => station.scans, { nullable: true })
+  station: ScanStation;
+
+  /**
+   * The scan's distance in meters.
+   */
+  @IsInt()
+  @IsPositive()
+  public get distance(): number {
+    return this.track.distance;
+  }
+
+  /**
+   * The scan's creation timestamp.
+   */
+  @Column()
+  @IsDateString()
+  @IsNotEmpty()
+  timestamp: string;
+}