Moved to a "cleaner" directory structure

ref #11

src/models/entities/Participant.ts

@@ -0,0 +1,83 @@
+import { PrimaryGeneratedColumn, Column, OneToMany, ManyToOne, Entity, TableInheritance } from "typeorm";
+import {
+  IsEmail,
+  IsInt,
+  IsNotEmpty,
+  IsOptional,
+  IsPhoneNumber,
+  IsPositive,
+  IsString,
+} from "class-validator";
+import { Address } from "./Address";
+import { Donation } from "./Donation";
+
+/**
+ * Defines the participant interface.
+*/
+@Entity()
+@TableInheritance({ column: { name: "type", type: "varchar" } })
+export abstract class Participant {
+  /**
+   * Autogenerated unique id (primary key).
+   */
+  @PrimaryGeneratedColumn()
+  @IsOptional()
+  @IsInt()
+  id: number;
+
+  /**
+   * The participant's first name.
+   */
+  @Column()
+  @IsNotEmpty()
+  @IsString()
+  firstname: string;
+
+  /**
+   * The participant's middle name.
+   * Optional
+   */
+  @Column({ nullable: true })
+  @IsOptional()
+  @IsString()
+  middlename?: string;
+
+  /**
+   * The participant's last name.
+   */
+  @Column()
+  @IsNotEmpty()
+  @IsString()
+  lastname: string;
+
+  /**
+   * The participant's address.
+   * Optional
+   */
+  @ManyToOne(() => Address, address => address.participants, { nullable: true })
+  address?: Address;
+
+  /**
+   * The participant's phone number.
+   * Optional
+   */
+  @Column({ nullable: true })
+  @IsOptional()
+  @IsPhoneNumber("DE")
+  phone?: string;
+
+  /**
+   * The participant's email address.
+   * Optional
+   */
+  @Column({ nullable: true })
+  @IsOptional()
+  @IsEmail()
+  email?: string;
+
+  /**
+   * Used to link the participant as the donor of a donation.
+   */
+  @OneToMany(() => Donation, donation => donation.donor, { nullable: true })
+  donations: Donation[];
+}