From b78d21a524f7a11ad29b4bd230f23825f80c3ed7 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sun, 26 Jul 2020 15:02:55 +0800
Subject: Merge front end repo

---
 Timeline/ClientApp/src/app/data/timeline.ts | 265 ++++++++++++++++++++++++++++
 1 file changed, 265 insertions(+)
 create mode 100644 Timeline/ClientApp/src/app/data/timeline.ts

(limited to 'Timeline/ClientApp/src/app/data/timeline.ts')

diff --git a/Timeline/ClientApp/src/app/data/timeline.ts b/Timeline/ClientApp/src/app/data/timeline.ts
new file mode 100644
index 00000000..dde204be
--- /dev/null
+++ b/Timeline/ClientApp/src/app/data/timeline.ts
@@ -0,0 +1,265 @@
+import React from 'react';
+import XRegExp from 'xregexp';
+import { Observable, from } from 'rxjs';
+import { map } from 'rxjs/operators';
+
+import { UserAuthInfo, checkLogin, userService } from './user';
+
+import { BlobWithUrl } from './common';
+import { SubscriptionHub, ISubscriptionHub } from './SubscriptionHub';
+
+export { kTimelineVisibilities } from '../http/timeline';
+
+export type { TimelineVisibility } from '../http/timeline';
+
+import {
+  TimelineVisibility,
+  HttpTimelineInfo,
+  HttpTimelinePatchRequest,
+  HttpTimelinePostPostRequest,
+  HttpTimelinePostPostRequestContent,
+  HttpTimelinePostPostRequestTextContent,
+  HttpTimelinePostPostRequestImageContent,
+  HttpTimelinePostInfo,
+  HttpTimelinePostContent,
+  HttpTimelinePostTextContent,
+  HttpTimelinePostImageContent,
+  getHttpTimelineClient,
+  HttpTimelineNotExistError,
+  HttpTimelineNameConflictError,
+} from '../http/timeline';
+import { convertError } from '../utilities/rxjs';
+
+export type TimelineInfo = HttpTimelineInfo;
+export type TimelineChangePropertyRequest = HttpTimelinePatchRequest;
+export type TimelineCreatePostRequest = HttpTimelinePostPostRequest;
+export type TimelineCreatePostContent = HttpTimelinePostPostRequestContent;
+export type TimelineCreatePostTextContent = HttpTimelinePostPostRequestTextContent;
+export type TimelineCreatePostImageContent = HttpTimelinePostPostRequestImageContent;
+
+export interface TimelinePostInfo extends HttpTimelinePostInfo {
+  timelineName: string;
+}
+
+export type TimelinePostContent = HttpTimelinePostContent;
+export type TimelinePostTextContent = HttpTimelinePostTextContent;
+export type TimelinePostImageContent = HttpTimelinePostImageContent;
+
+export const timelineVisibilityTooltipTranslationMap: Record<
+  TimelineVisibility,
+  string
+> = {
+  Public: 'timeline.visibilityTooltip.public',
+  Register: 'timeline.visibilityTooltip.register',
+  Private: 'timeline.visibilityTooltip.private',
+};
+
+export class TimelineNotExistError extends Error {}
+export class TimelineNameConflictError extends Error {}
+
+export interface PostKey {
+  timelineName: string;
+  postId: number;
+}
+
+export class TimelineService {
+  getTimeline(timelineName: string): Observable<TimelineInfo> {
+    return from(getHttpTimelineClient().getTimeline(timelineName)).pipe(
+      convertError(HttpTimelineNotExistError, TimelineNotExistError)
+    );
+  }
+
+  createTimeline(timelineName: string): Observable<TimelineInfo> {
+    const user = checkLogin();
+    return from(
+      getHttpTimelineClient().postTimeline(
+        {
+          name: timelineName,
+        },
+        user.token
+      )
+    ).pipe(
+      convertError(HttpTimelineNameConflictError, TimelineNameConflictError)
+    );
+  }
+
+  changeTimelineProperty(
+    timelineName: string,
+    req: TimelineChangePropertyRequest
+  ): Observable<TimelineInfo> {
+    const user = checkLogin();
+    return from(
+      getHttpTimelineClient().patchTimeline(timelineName, req, user.token)
+    );
+  }
+
+  deleteTimeline(timelineName: string): Observable<unknown> {
+    const user = checkLogin();
+    return from(
+      getHttpTimelineClient().deleteTimeline(timelineName, user.token)
+    );
+  }
+
+  addMember(timelineName: string, username: string): Observable<unknown> {
+    const user = checkLogin();
+    return from(
+      getHttpTimelineClient().memberPut(timelineName, username, user.token)
+    );
+  }
+
+  removeMember(timelineName: string, username: string): Observable<unknown> {
+    const user = checkLogin();
+    return from(
+      getHttpTimelineClient().memberDelete(timelineName, username, user.token)
+    );
+  }
+
+  getPosts(timelineName: string): Observable<TimelinePostInfo[]> {
+    const token = userService.currentUser?.token;
+    return from(getHttpTimelineClient().listPost(timelineName, token)).pipe(
+      map((posts) => {
+        return posts.map((post) => ({
+          ...post,
+          timelineName,
+        }));
+      })
+    );
+  }
+
+  private _postDataSubscriptionHub = new SubscriptionHub<PostKey, BlobWithUrl>(
+    (key) => `${key.timelineName}/${key.postId}`,
+    async (key) => {
+      const blob = (
+        await getHttpTimelineClient().getPostData(
+          key.timelineName,
+          key.postId,
+          userService.currentUser?.token
+        )
+      ).data;
+      const url = URL.createObjectURL(blob);
+      return {
+        blob,
+        url,
+      };
+    },
+    (_key, data) => {
+      URL.revokeObjectURL(data.url);
+    }
+  );
+
+  get postDataHub(): ISubscriptionHub<PostKey, BlobWithUrl> {
+    return this._postDataSubscriptionHub;
+  }
+
+  createPost(
+    timelineName: string,
+    request: TimelineCreatePostRequest
+  ): Observable<TimelinePostInfo> {
+    const user = checkLogin();
+    return from(
+      getHttpTimelineClient().postPost(timelineName, request, user.token)
+    ).pipe(map((post) => ({ ...post, timelineName })));
+  }
+
+  deletePost(timelineName: string, postId: number): Observable<unknown> {
+    const user = checkLogin();
+    return from(
+      getHttpTimelineClient().deletePost(timelineName, postId, user.token)
+    );
+  }
+
+  isMemberOf(username: string, timeline: TimelineInfo): boolean {
+    return timeline.members.findIndex((m) => m.username == username) >= 0;
+  }
+
+  hasReadPermission(
+    user: UserAuthInfo | null | undefined,
+    timeline: TimelineInfo
+  ): boolean {
+    if (user != null && user.administrator) return true;
+
+    const { visibility } = timeline;
+    if (visibility === 'Public') {
+      return true;
+    } else if (visibility === 'Register') {
+      if (user != null) return true;
+    } else if (visibility === 'Private') {
+      if (user != null && this.isMemberOf(user.username, timeline)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  hasPostPermission(
+    user: UserAuthInfo | null | undefined,
+    timeline: TimelineInfo
+  ): boolean {
+    if (user != null && user.administrator) return true;
+
+    return (
+      user != null &&
+      (timeline.owner.username === user.username ||
+        this.isMemberOf(user.username, timeline))
+    );
+  }
+
+  hasManagePermission(
+    user: UserAuthInfo | null | undefined,
+    timeline: TimelineInfo
+  ): boolean {
+    if (user != null && user.administrator) return true;
+
+    return user != null && user.username == timeline.owner.username;
+  }
+
+  hasModifyPostPermission(
+    user: UserAuthInfo | null | undefined,
+    timeline: TimelineInfo,
+    post: TimelinePostInfo
+  ): boolean {
+    if (user != null && user.administrator) return true;
+
+    return (
+      user != null &&
+      (user.username === timeline.owner.username ||
+        user.username === post.author.username)
+    );
+  }
+}
+
+export const timelineService = new TimelineService();
+
+const timelineNameReg = XRegExp('^[-_\\p{L}]*$', 'u');
+
+export function validateTimelineName(name: string): boolean {
+  return timelineNameReg.test(name);
+}
+
+export function usePostDataUrl(
+  enable: boolean,
+  timelineName: string,
+  postId: number
+): string | undefined {
+  const [url, setUrl] = React.useState<string | undefined>(undefined);
+  React.useEffect(() => {
+    if (!enable) {
+      setUrl(undefined);
+      return;
+    }
+
+    const subscription = timelineService.postDataHub.subscribe(
+      {
+        timelineName,
+        postId,
+      },
+      ({ url }) => {
+        setUrl(url);
+      }
+    );
+    return () => {
+      subscription.unsubscribe();
+    };
+  }, [timelineName, postId, enable]);
+  return url;
+}
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