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.

---
 FrontEnd/src/app/views/admin/UserAdmin.tsx | 460 +++++++++++++++++++++++++++++
 1 file changed, 460 insertions(+)
 create mode 100644 FrontEnd/src/app/views/admin/UserAdmin.tsx

(limited to 'FrontEnd/src/app/views/admin/UserAdmin.tsx')

diff --git a/FrontEnd/src/app/views/admin/UserAdmin.tsx b/FrontEnd/src/app/views/admin/UserAdmin.tsx
new file mode 100644
index 00000000..18b77ca8
--- /dev/null
+++ b/FrontEnd/src/app/views/admin/UserAdmin.tsx
@@ -0,0 +1,460 @@
+import React, { useState, useEffect } from "react";
+import axios from "axios";
+import {
+  ListGroup,
+  Row,
+  Col,
+  Dropdown,
+  Spinner,
+  Button,
+} from "react-bootstrap";
+
+import OperationDialog from "../common/OperationDialog";
+import { User, UserWithToken } from "@/services/user";
+
+const apiBaseUrl = "/api";
+
+async function fetchUserList(_token: string): Promise<User[]> {
+  const res = await axios.get<User[]>(`${apiBaseUrl}/users`);
+  return res.data;
+}
+
+interface CreateUserInfo {
+  username: string;
+  password: string;
+  administrator: boolean;
+}
+
+async function createUser(user: CreateUserInfo, token: string): Promise<User> {
+  const res = await axios.post<User>(
+    `${apiBaseUrl}/userop/createuser?token=${token}`,
+    user
+  );
+  return res.data;
+}
+
+function deleteUser(username: string, token: string): Promise<void> {
+  return axios.delete(`${apiBaseUrl}/users/${username}?token=${token}`);
+}
+
+function changeUsername(
+  oldUsername: string,
+  newUsername: string,
+  token: string
+): Promise<void> {
+  return axios.patch(`${apiBaseUrl}/users/${oldUsername}?token=${token}`, {
+    username: newUsername,
+  });
+}
+
+function changePassword(
+  username: string,
+  newPassword: string,
+  token: string
+): Promise<void> {
+  return axios.patch(`${apiBaseUrl}/users/${username}?token=${token}`, {
+    password: newPassword,
+  });
+}
+
+function changePermission(
+  username: string,
+  newPermission: boolean,
+  token: string
+): Promise<void> {
+  return axios.patch(`${apiBaseUrl}/users/${username}?token=${token}`, {
+    administrator: newPermission,
+  });
+}
+
+const kChangeUsername = "changeusername";
+const kChangePassword = "changepassword";
+const kChangePermission = "changepermission";
+const kDelete = "delete";
+
+type TChangeUsername = typeof kChangeUsername;
+type TChangePassword = typeof kChangePassword;
+type TChangePermission = typeof kChangePermission;
+type TDelete = typeof kDelete;
+
+type ContextMenuItem =
+  | TChangeUsername
+  | TChangePassword
+  | TChangePermission
+  | TDelete;
+
+interface UserCardProps {
+  onContextMenu: (item: ContextMenuItem) => void;
+  user: User;
+}
+
+const UserItem: React.FC<UserCardProps> = (props) => {
+  const user = props.user;
+
+  const createClickCallback = (item: ContextMenuItem): (() => void) => {
+    return () => {
+      props.onContextMenu(item);
+    };
+  };
+
+  return (
+    <ListGroup.Item className="container">
+      <Row className="align-items-center">
+        <Col>
+          <p className="mb-0 text-primary">{user.username}</p>
+          <small
+            className={user.administrator ? "text-danger" : "text-secondary"}
+          >
+            {user.administrator ? "administrator" : "user"}
+          </small>
+        </Col>
+        <Col className="col-auto">
+          <Dropdown>
+            <Dropdown.Toggle variant="warning" className="text-light">
+              Manage
+            </Dropdown.Toggle>
+            <Dropdown.Menu>
+              <Dropdown.Item onClick={createClickCallback(kChangeUsername)}>
+                Change Username
+              </Dropdown.Item>
+              <Dropdown.Item onClick={createClickCallback(kChangePassword)}>
+                Change Password
+              </Dropdown.Item>
+              <Dropdown.Item onClick={createClickCallback(kChangePermission)}>
+                Change Permission
+              </Dropdown.Item>
+              <Dropdown.Item
+                className="text-danger"
+                onClick={createClickCallback(kDelete)}
+              >
+                Delete
+              </Dropdown.Item>
+            </Dropdown.Menu>
+          </Dropdown>
+        </Col>
+      </Row>
+    </ListGroup.Item>
+  );
+};
+
+interface DialogProps {
+  open: boolean;
+  close: () => void;
+}
+
+interface CreateUserDialogProps extends DialogProps {
+  process: (user: CreateUserInfo) => Promise<void>;
+}
+
+const CreateUserDialog: React.FC<CreateUserDialogProps> = (props) => {
+  return (
+    <OperationDialog
+      title="Create"
+      titleColor="create"
+      inputPrompt="You are creating a new user."
+      inputScheme={[
+        { type: "text", label: "Username" },
+        { type: "text", label: "Password" },
+        { type: "bool", label: "Administrator" },
+      ]}
+      onProcess={([username, password, administrator]) =>
+        props.process({
+          username: username as string,
+          password: password as string,
+          administrator: administrator as boolean,
+        })
+      }
+      close={props.close}
+      open={props.open}
+    />
+  );
+};
+
+const UsernameLabel: React.FC = (props) => {
+  return <span style={{ color: "blue" }}>{props.children}</span>;
+};
+
+interface UserDeleteDialogProps extends DialogProps {
+  username: string;
+  process: () => Promise<void>;
+}
+
+const UserDeleteDialog: React.FC<UserDeleteDialogProps> = (props) => {
+  return (
+    <OperationDialog
+      open={props.open}
+      close={props.close}
+      title="Dangerous"
+      titleColor="dangerous"
+      inputPrompt={() => (
+        <>
+          {"You are deleting user "}
+          <UsernameLabel>{props.username}</UsernameLabel>
+          {" !"}
+        </>
+      )}
+      onProcess={props.process}
+    />
+  );
+};
+
+interface UserModifyDialogProps<T> extends DialogProps {
+  username: string;
+  process: (value: T) => Promise<void>;
+}
+
+const UserChangeUsernameDialog: React.FC<UserModifyDialogProps<string>> = (
+  props
+) => {
+  return (
+    <OperationDialog
+      open={props.open}
+      close={props.close}
+      title="Caution"
+      titleColor="dangerous"
+      inputPrompt={() => (
+        <>
+          {"You are change the username of user "}
+          <UsernameLabel>{props.username}</UsernameLabel>
+          {" !"}
+        </>
+      )}
+      inputScheme={[{ type: "text", label: "New Username" }]}
+      onProcess={([newUsername]) => {
+        return props.process(newUsername as string);
+      }}
+    />
+  );
+};
+
+const UserChangePasswordDialog: React.FC<UserModifyDialogProps<string>> = (
+  props
+) => {
+  return (
+    <OperationDialog
+      open={props.open}
+      close={props.close}
+      title="Caution"
+      titleColor="dangerous"
+      inputPrompt={() => (
+        <>
+          {"You are change the password of user "}
+          <UsernameLabel>{props.username}</UsernameLabel>
+          {" !"}
+        </>
+      )}
+      inputScheme={[{ type: "text", label: "New Password" }]}
+      onProcess={([newPassword]) => {
+        return props.process(newPassword as string);
+      }}
+    />
+  );
+};
+
+interface UserChangePermissionDialogProps extends DialogProps {
+  username: string;
+  newPermission: boolean;
+  process: () => Promise<void>;
+}
+
+const UserChangePermissionDialog: React.FC<UserChangePermissionDialogProps> = (
+  props
+) => {
+  return (
+    <OperationDialog
+      open={props.open}
+      close={props.close}
+      title="Caution"
+      titleColor="dangerous"
+      inputPrompt={() => (
+        <>
+          {"You are change user "}
+          <UsernameLabel>{props.username}</UsernameLabel>
+          {" to "}
+          <span style={{ color: "orange" }}>
+            {props.newPermission ? "administrator" : "normal user"}
+          </span>
+          {" !"}
+        </>
+      )}
+      onProcess={props.process}
+    />
+  );
+};
+
+interface UserAdminProps {
+  user: UserWithToken;
+}
+
+const UserAdmin: React.FC<UserAdminProps> = (props) => {
+  type DialogInfo =
+    | null
+    | {
+        type: "create";
+      }
+    | { type: TDelete; username: string }
+    | {
+        type: TChangeUsername;
+        username: string;
+      }
+    | {
+        type: TChangePassword;
+        username: string;
+      }
+    | {
+        type: TChangePermission;
+        username: string;
+        newPermission: boolean;
+      };
+
+  const [users, setUsers] = useState<User[] | null>(null);
+  const [dialog, setDialog] = useState<DialogInfo>(null);
+
+  const token = props.user.token;
+
+  useEffect(() => {
+    let subscribe = true;
+    void fetchUserList(props.user.token).then((us) => {
+      if (subscribe) {
+        setUsers(us);
+      }
+    });
+    return () => {
+      subscribe = false;
+    };
+  }, [props.user]);
+
+  let dialogNode: React.ReactNode;
+  if (dialog)
+    switch (dialog.type) {
+      case "create":
+        dialogNode = (
+          <CreateUserDialog
+            open
+            close={() => setDialog(null)}
+            process={async (user) => {
+              const u = await createUser(user, token);
+              setUsers((oldUsers) => [...(oldUsers ?? []), u]);
+            }}
+          />
+        );
+        break;
+      case "delete":
+        dialogNode = (
+          <UserDeleteDialog
+            open
+            close={() => setDialog(null)}
+            username={dialog.username}
+            process={async () => {
+              await deleteUser(dialog.username, token);
+              setUsers((oldUsers) =>
+                (oldUsers ?? []).filter((u) => u.username !== dialog.username)
+              );
+            }}
+          />
+        );
+        break;
+      case kChangeUsername:
+        dialogNode = (
+          <UserChangeUsernameDialog
+            open
+            close={() => setDialog(null)}
+            username={dialog.username}
+            process={async (newUsername) => {
+              await changeUsername(dialog.username, newUsername, token);
+              setUsers((oldUsers) => {
+                const users = (oldUsers ?? []).slice();
+                const findedUser = users.find(
+                  (u) => u.username === dialog.username
+                );
+                if (findedUser) findedUser.username = newUsername;
+                return users;
+              });
+            }}
+          />
+        );
+        break;
+      case kChangePassword:
+        dialogNode = (
+          <UserChangePasswordDialog
+            open
+            close={() => setDialog(null)}
+            username={dialog.username}
+            process={async (newPassword) => {
+              await changePassword(dialog.username, newPassword, token);
+            }}
+          />
+        );
+        break;
+      case kChangePermission: {
+        const newPermission = dialog.newPermission;
+        dialogNode = (
+          <UserChangePermissionDialog
+            open
+            close={() => setDialog(null)}
+            username={dialog.username}
+            newPermission={newPermission}
+            process={async () => {
+              await changePermission(dialog.username, newPermission, token);
+              setUsers((oldUsers) => {
+                const users = (oldUsers ?? []).slice();
+                const findedUser = users.find(
+                  (u) => u.username === dialog.username
+                );
+                if (findedUser) findedUser.administrator = newPermission;
+                return users;
+              });
+            }}
+          />
+        );
+        break;
+      }
+    }
+
+  if (users) {
+    const userComponents = users.map((user) => {
+      return (
+        <UserItem
+          key={user.username}
+          user={user}
+          onContextMenu={(item) => {
+            setDialog(
+              item === kChangePermission
+                ? {
+                    type: kChangePermission,
+                    username: user.username,
+                    newPermission: !user.administrator,
+                  }
+                : {
+                    type: item,
+                    username: user.username,
+                  }
+            );
+          }}
+        />
+      );
+    });
+
+    return (
+      <>
+        <Button
+          variant="success"
+          onClick={() =>
+            setDialog({
+              type: "create",
+            })
+          }
+          className="align-self-end"
+        >
+          Create User
+        </Button>
+        {userComponents}
+        {dialogNode}
+      </>
+    );
+  } else {
+    return <Spinner animation="border" />;
+  }
+};
+
+export default UserAdmin;
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