nandi.uk
This repository has no description
1import { AggregateRoot } from 'src/shared/domain/AggregateRoot';
2import { UniqueEntityID } from 'src/shared/domain/UniqueEntityID';
3import { Guard, IGuardArgument } from 'src/shared/core/Guard';
4import { err, ok, Result } from 'src/shared/core/Result';
5import { DID } from './value-objects/DID';
6import { FollowTargetType } from './value-objects/FollowTargetType';
7
8export interface FollowProps {
9 followerId: DID;
10 targetId: string;
11 targetType: FollowTargetType;
12 createdAt: Date;
13}
14
15export class Follow extends AggregateRoot<FollowProps> {
16 get followId(): UniqueEntityID {
17 return this._id;
18 }
19
20 get followerId(): DID {
21 return this.props.followerId;
22 }
23
24 get targetId(): string {
25 return this.props.targetId;
26 }
27
28 get targetType(): FollowTargetType {
29 return this.props.targetType;
30 }
31
32 get createdAt(): Date {
33 return this.props.createdAt;
34 }
35
36 private constructor(props: FollowProps, id?: UniqueEntityID) {
37 super(props, id);
38 }
39
40 public static create(
41 props: FollowProps,
42 id?: UniqueEntityID,
43 ): Result<Follow> {
44 const guardArgs: IGuardArgument[] = [
45 { argument: props.followerId, argumentName: 'followerId' },
46 { argument: props.targetId, argumentName: 'targetId' },
47 { argument: props.targetType, argumentName: 'targetType' },
48 { argument: props.createdAt, argumentName: 'createdAt' },
49 ];
50
51 const guardResult = Guard.againstNullOrUndefinedBulk(guardArgs);
52
53 if (guardResult.isErr()) {
54 return err(new Error(guardResult.error));
55 }
56
57 const follow = new Follow(props, id);
58
59 return ok(follow);
60 }
61
62 public static createNew(
63 followerId: DID,
64 targetId: string,
65 targetType: FollowTargetType,
66 ): Result<Follow> {
67 const now = new Date();
68
69 return Follow.create({
70 followerId,
71 targetId,
72 targetType,
73 createdAt: now,
74 });
75 }
76}