Basic database structure

- Change license

src/models/invoice.ts

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+import { AfterLoad, Column, Entity, PrimaryColumn } from "typeorm";
+import { CryptoUnits, FiatUnits, PaymentStatus } from "../helper/types";
+
+@Entity()
+export class Invoice {
+
+    @PrimaryColumn()
+    id: number;
+
+    // Available payment methods
+    // btc,xmr,eth,doge
+    @Column({ type: 'text' })
+    paymentMethods: CryptoUnits[];
+
+    // 1Kss3e9iPB9vTgWJJZ1SZNkkFKcFJXPz9t
+    @Column()
+    receiveAddress: string;
+
+    @Column()
+    paidWith: CryptoUnits;
+
+    // Is set when invoice got paid
+    // 3b38c3a215d4e7981e1516b2dcbf76fca58911274d5d55b3d615274d6e10f2c1
+    @Column({ nullable: true })
+    transcationHash: string;
+
+    @Column({ type: 'varchar' })
+    priceUnit: FiatUnits;
+
+    @Column({ type: 'float' })
+    price: number;
+
+    @Column()
+    dueBy: number;
+
+    @Column({ type: 'smallint' })
+    status: PaymentStatus;
+
+    @Column({ nullable: true })
+    email: string;
+
+    @Column({ type: 'timestamp' })
+    createdAt: number;
+
+    @AfterLoad()
+    convertPayments() {
+        if (this.paymentMethods !== undefined) {
+            /*const arr = this.paymentMethods.split(',');
+            let final: CryptoUnits[];
+
+            arr.forEach(elem => {
+                final.push(CryptoUnits[elem.toUpperCase()]);
+            });*/
+        }
+    }
+
+}