From ac769e656b122ff569c3f1534701b71e00fed586 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 27 Oct 2020 19:21:35 +0800
Subject: Split front and back end.

---
 .../views/timeline-common/TimelinePageTemplate.tsx | 185 +++++++++++++++++++++
 1 file changed, 185 insertions(+)
 create mode 100644 FrontEnd/src/app/views/timeline-common/TimelinePageTemplate.tsx

(limited to 'FrontEnd/src/app/views/timeline-common/TimelinePageTemplate.tsx')

diff --git a/FrontEnd/src/app/views/timeline-common/TimelinePageTemplate.tsx b/FrontEnd/src/app/views/timeline-common/TimelinePageTemplate.tsx
new file mode 100644
index 00000000..d5c91622
--- /dev/null
+++ b/FrontEnd/src/app/views/timeline-common/TimelinePageTemplate.tsx
@@ -0,0 +1,185 @@
+import React from "react";
+import { useTranslation } from "react-i18next";
+import { of } from "rxjs";
+import { catchError } from "rxjs/operators";
+
+import { UiLogicError } from "@/common";
+import { pushAlert } from "@/services/alert";
+import { useUser, userInfoService, UserNotExistError } from "@/services/user";
+import {
+  timelineService,
+  usePostList,
+  useTimelineInfo,
+} from "@/services/timeline";
+
+import { TimelineDeleteCallback } from "./Timeline";
+import { TimelineMemberDialog } from "./TimelineMember";
+import TimelinePropertyChangeDialog from "./TimelinePropertyChangeDialog";
+import { TimelinePageTemplateUIProps } from "./TimelinePageTemplateUI";
+import { TimelinePostSendCallback } from "./TimelinePostEdit";
+
+export interface TimelinePageTemplateProps<TManageItem> {
+  name: string;
+  onManage: (item: TManageItem) => void;
+  UiComponent: React.ComponentType<
+    Omit<TimelinePageTemplateUIProps<TManageItem>, "CardComponent">
+  >;
+  notFoundI18nKey: string;
+}
+
+export default function TimelinePageTemplate<TManageItem>(
+  props: TimelinePageTemplateProps<TManageItem>
+): React.ReactElement | null {
+  const { t } = useTranslation();
+
+  const { name } = props;
+
+  const service = timelineService;
+
+  const user = useUser();
+
+  const [dialog, setDialog] = React.useState<null | "property" | "member">(
+    null
+  );
+
+  const timelineState = useTimelineInfo(name);
+
+  const timeline = timelineState?.timeline;
+
+  const postListState = usePostList(name);
+
+  const error: string | undefined = (() => {
+    if (timelineState != null) {
+      const { type, timeline } = timelineState;
+      if (type === "offline" && timeline == null) return "Network Error";
+      if (type === "synced" && timeline == null)
+        return t(props.notFoundI18nKey);
+    }
+    return undefined;
+  })();
+
+  const closeDialog = React.useCallback((): void => {
+    setDialog(null);
+  }, []);
+
+  let dialogElement: React.ReactElement | undefined;
+
+  if (dialog === "property") {
+    if (timeline == null) {
+      throw new UiLogicError(
+        "Timeline is null but attempt to open change property dialog."
+      );
+    }
+
+    dialogElement = (
+      <TimelinePropertyChangeDialog
+        open
+        close={closeDialog}
+        oldInfo={{
+          visibility: timeline.visibility,
+          description: timeline.description,
+        }}
+        onProcess={(req) => {
+          return service.changeTimelineProperty(name, req).toPromise().then();
+        }}
+      />
+    );
+  } else if (dialog === "member") {
+    if (timeline == null) {
+      throw new UiLogicError(
+        "Timeline is null but attempt to open change property dialog."
+      );
+    }
+
+    dialogElement = (
+      <TimelineMemberDialog
+        open
+        onClose={closeDialog}
+        members={[timeline.owner, ...timeline.members]}
+        edit={
+          service.hasManagePermission(user, timeline)
+            ? {
+                onCheckUser: (u) => {
+                  return userInfoService
+                    .getUserInfo(u)
+                    .pipe(
+                      catchError((e) => {
+                        if (e instanceof UserNotExistError) {
+                          return of(null);
+                        } else {
+                          throw e;
+                        }
+                      })
+                    )
+                    .toPromise();
+                },
+                onAddUser: (u) => {
+                  return service.addMember(name, u.username).toPromise().then();
+                },
+                onRemoveUser: (u) => {
+                  service.removeMember(name, u);
+                },
+              }
+            : null
+        }
+      />
+    );
+  }
+
+  const { UiComponent } = props;
+
+  const onDelete: TimelineDeleteCallback = React.useCallback(
+    (index, id) => {
+      service.deletePost(name, id).subscribe(null, () => {
+        pushAlert({
+          type: "danger",
+          message: t("timeline.deletePostFailed"),
+        });
+      });
+    },
+    [service, name, t]
+  );
+
+  const onPost: TimelinePostSendCallback = React.useCallback(
+    (req) => {
+      return service.createPost(name, req).toPromise().then();
+    },
+    [service, name]
+  );
+
+  const onManageProp = props.onManage;
+
+  const onManage = React.useCallback(
+    (item: "property" | TManageItem) => {
+      if (item === "property") {
+        setDialog(item);
+      } else {
+        onManageProp(item);
+      }
+    },
+    [onManageProp]
+  );
+
+  return (
+    <>
+      <UiComponent
+        error={error}
+        timeline={timeline ?? undefined}
+        postListState={postListState}
+        onDelete={onDelete}
+        onPost={
+          timeline != null && service.hasPostPermission(user, timeline)
+            ? onPost
+            : undefined
+        }
+        onManage={
+          timeline != null && service.hasManagePermission(user, timeline)
+            ? onManage
+            : undefined
+        }
+        onMember={() => setDialog("member")}
+      />
+      {dialogElement}
+    </>
+  );
+}
-- 
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