feat(frontend) add Activities.tsx

frontend/src/HomePageActivities/activity.tsx

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+import React from 'react';
+
+
+export abstract class Activity {
+    protected constructor(
+        readonly time: Date
+    ) {
+    }
+
+    abstract toElement(): React.ReactElement;
+
+}
+
+export abstract class GhActivity extends Activity {
+    protected constructor(time: Date) {
+        super(time);
+    }
+}

frontend/src/HomePageActivities/constants.ts

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+export const GH_USER_NAME = 'Lumither';

frontend/src/HomePageActivities/ghActivities/starRepo.tsx

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+import { GhActivity } from '@/src/HomePageActivities/activity';
+import { Card, CardBody } from '@nextui-org/card';
+import Link from 'next/link';
+
+export class StarRepo extends GhActivity {
+    constructor(
+        readonly repoName: string,
+        readonly repoUrl: string,
+        time: Date
+    ) {
+        super(time);
+    }
+
+    toElement() {
+        return (
+            // <div>
+            //     <Link
+            //         href={ this.repoUrl }
+            //     >{ `${ GH_USER_NAME } started ${ this.repoName } at ${ this.time }` }</Link>
+            // </div>
+            <Card
+                isHoverable={ true }
+                as={ Link }
+                href={ this.repoUrl }
+                className={ 'bg-black/20' }
+            >
+                <CardBody>
+                    <p className={ 'text-sm' }>{ `Stared GitHub repository '${ this.repoName }'` }</p>
+                </CardBody>
+            </Card>
+
+        );
+    }
+}

frontend/src/HomePageActivities/ghActivity.tsx

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+import { GhActivity } from '@/src/HomePageActivities/activity';
+import { match } from 'ts-pattern';
+import { StarRepo } from '@/src/HomePageActivities/ghActivities/starRepo';
+import { GH_USER_NAME } from '@/src/HomePageActivities/constants';
+
+
+export const getGhActivities: () => Promise<GhActivity[]> = async () => {
+    const data = await fetch(`https://api.github.com/users/${ GH_USER_NAME }/events`, {
+        headers: {
+            'Accept': 'application/vnd.github+json',
+            'X-GitHub-Api-Version': '2022-11-28'
+        }
+    });
+    return data
+        .json()
+        .then((ret: any): GhActivity[] => (
+            ret
+                .map((res: any) => (
+                    match(res)
+                        .returnType<GhActivity | undefined>()
+                        // star repo
+                        .with(
+                            { type: 'WatchEvent', payload: { action: 'started' } }
+                            , () => (
+                                new StarRepo(res.repo.name, res.repo.url, res.created_at)
+                            ))
+                        // to be continued
+                        .otherwise(() => undefined))
+                )
+                .filter((res: GhActivity | undefined) => res !== undefined)
+        ));
+};