some change

src/app/feed/posts/posts.ts

@@ -0,0 +1,49 @@
+import { Temporal } from '@js-temporal/polyfill'
+import { components } from '../../api/schema.ts'
+
+export class Post {
+  public readonly postId: string
+  public readonly content: string
+  public readonly media: PostMedia[]
+  public readonly createdAt: Temporal.Instant
+  public readonly authorName: string
+
+  constructor(
+    postId: string,
+    content: string,
+    media: PostMedia[],
+    createdAt: string | Temporal.Instant,
+    authorName: string,
+  ) {
+    this.postId = postId
+    this.content = content
+    this.media = media
+    this.createdAt = Temporal.Instant.from(createdAt)
+    this.authorName = authorName
+  }
+
+  public static fromDto(dto: components['schemas']['PublicPostDto']): Post {
+    console.debug('make post', dto)
+    return new Post(
+      dto.postId,
+      dto.content,
+      dto.media.map((m) => new PostMediaImpl(new URL(m.url), m.width, m.height)),
+      Temporal.Instant.from(dto.createdAt),
+      dto.author.username,
+    )
+  }
+}
+
+export interface PostMedia {
+  readonly url: URL
+  readonly width: number | null
+  readonly height: number | null
+}
+
+class PostMediaImpl implements PostMedia {
+  constructor(
+    readonly url: URL,
+    readonly width: number | null,
+    readonly height: number | null,
+  ) {}
+}