From 05ccb4d8f1bbe3fb64e117136b4a89bcfb0b0b33 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.

---
 .../app/views/timeline-common/TimelineMember.tsx   | 211 +++++++++++++++++++++
 1 file changed, 211 insertions(+)
 create mode 100644 FrontEnd/src/app/views/timeline-common/TimelineMember.tsx

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

diff --git a/FrontEnd/src/app/views/timeline-common/TimelineMember.tsx b/FrontEnd/src/app/views/timeline-common/TimelineMember.tsx
new file mode 100644
index 00000000..67a8543a
--- /dev/null
+++ b/FrontEnd/src/app/views/timeline-common/TimelineMember.tsx
@@ -0,0 +1,211 @@
+import React, { useState } from "react";
+import { useTranslation } from "react-i18next";
+import { Container, ListGroup, Modal, Row, Col, Button } from "react-bootstrap";
+
+import { User, useAvatar } from "@/services/user";
+
+import SearchInput from "../common/SearchInput";
+import BlobImage from "../common/BlobImage";
+
+const TimelineMemberItem: React.FC<{
+  user: User;
+  owner: boolean;
+  onRemove?: (username: string) => void;
+}> = ({ user, owner, onRemove }) => {
+  const { t } = useTranslation();
+
+  const avatar = useAvatar(user.username);
+
+  return (
+    <ListGroup.Item className="container">
+      <Row>
+        <Col xs="auto">
+          <BlobImage blob={avatar} className="avatar small" />
+        </Col>
+        <Col>
+          <Row>{user.nickname}</Row>
+          <Row>
+            <small>{"@" + user.username}</small>
+          </Row>
+        </Col>
+        {(() => {
+          if (owner) {
+            return null;
+          }
+          if (onRemove == null) {
+            return null;
+          }
+          return (
+            <Button
+              className="align-self-center"
+              variant="danger"
+              onClick={() => {
+                onRemove(user.username);
+              }}
+            >
+              {t("timeline.member.remove")}
+            </Button>
+          );
+        })()}
+      </Row>
+    </ListGroup.Item>
+  );
+};
+
+export interface TimelineMemberCallbacks {
+  onCheckUser: (username: string) => Promise<User | null>;
+  onAddUser: (user: User) => Promise<void>;
+  onRemoveUser: (username: string) => void;
+}
+
+export interface TimelineMemberProps {
+  members: User[];
+  edit: TimelineMemberCallbacks | null | undefined;
+}
+
+const TimelineMember: React.FC<TimelineMemberProps> = (props) => {
+  const { t } = useTranslation();
+
+  const [userSearchText, setUserSearchText] = useState<string>("");
+  const [userSearchState, setUserSearchState] = useState<
+    | {
+        type: "user";
+        data: User;
+      }
+    | { type: "error"; data: string }
+    | { type: "loading" }
+    | { type: "init" }
+  >({ type: "init" });
+
+  const userSearchAvatar = useAvatar(
+    userSearchState.type === "user" ? userSearchState.data.username : undefined
+  );
+
+  const members = props.members;
+
+  return (
+    <Container className="px-4">
+      <ListGroup className="my-3">
+        {members.map((member, index) => (
+          <TimelineMemberItem
+            key={member.username}
+            user={member}
+            owner={index === 0}
+            onRemove={props.edit?.onRemoveUser}
+          />
+        ))}
+      </ListGroup>
+      {(() => {
+        const edit = props.edit;
+        if (edit != null) {
+          return (
+            <>
+              <SearchInput
+                value={userSearchText}
+                onChange={(v) => {
+                  setUserSearchText(v);
+                }}
+                loading={userSearchState.type === "loading"}
+                onButtonClick={() => {
+                  if (userSearchText === "") {
+                    setUserSearchState({
+                      type: "error",
+                      data: "login.emptyUsername",
+                    });
+                    return;
+                  }
+
+                  setUserSearchState({ type: "loading" });
+                  edit.onCheckUser(userSearchText).then(
+                    (u) => {
+                      if (u == null) {
+                        setUserSearchState({
+                          type: "error",
+                          data: "timeline.userNotExist",
+                        });
+                      } else {
+                        setUserSearchState({ type: "user", data: u });
+                      }
+                    },
+                    (e) => {
+                      setUserSearchState({
+                        type: "error",
+                        data: `${e as string}`,
+                      });
+                    }
+                  );
+                }}
+              />
+              {(() => {
+                if (userSearchState.type === "user") {
+                  const u = userSearchState.data;
+                  const addable =
+                    members.findIndex((m) => m.username === u.username) === -1;
+                  return (
+                    <>
+                      {!addable ? (
+                        <p>{t("timeline.member.alreadyMember")}</p>
+                      ) : null}
+                      <Container className="mb-3">
+                        <Row>
+                          <Col className="col-auto">
+                            <BlobImage
+                              blob={userSearchAvatar}
+                              className="avatar small"
+                            />
+                          </Col>
+                          <Col>
+                            <Row>{u.nickname}</Row>
+                            <Row>
+                              <small>{"@" + u.username}</small>
+                            </Row>
+                          </Col>
+                          <Button
+                            variant="primary"
+                            className="align-self-center"
+                            disabled={!addable}
+                            onClick={() => {
+                              void edit.onAddUser(u).then((_) => {
+                                setUserSearchText("");
+                                setUserSearchState({ type: "init" });
+                              });
+                            }}
+                          >
+                            {t("timeline.member.add")}
+                          </Button>
+                        </Row>
+                      </Container>
+                    </>
+                  );
+                } else if (userSearchState.type === "error") {
+                  return (
+                    <p className="text-danger">{t(userSearchState.data)}</p>
+                  );
+                }
+              })()}
+            </>
+          );
+        } else {
+          return null;
+        }
+      })()}
+    </Container>
+  );
+};
+
+export default TimelineMember;
+
+export interface TimelineMemberDialogProps extends TimelineMemberProps {
+  open: boolean;
+  onClose: () => void;
+}
+
+export const TimelineMemberDialog: React.FC<TimelineMemberDialogProps> = (
+  props
+) => {
+  return (
+    <Modal show centered onHide={props.onClose}>
+      <TimelineMember {...props} />
+    </Modal>
+  );
+};
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