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import {useState} from 'react';
import {
Alert,
Box,
Button,
Chip,
CircularProgress,
Container,
Dialog,
DialogActions,
DialogContent,
DialogContentText,
DialogTitle,
FormControl,
InputLabel,
MenuItem,
Paper,
Select,
type SelectChangeEvent,
Snackbar,
Table,
TableBody,
TableCell,
TableContainer,
TableHead,
TableRow,
TextField,
Typography
} from '@mui/material';
import {AdminPanelSettings as AdminIcon, Delete as DeleteIcon} from '@mui/icons-material';
import {
type UserListItem,
useListUsersQuery,
useUpdateUserRoleMutation,
useDeleteUserMutation
} from '../../services/SuperAdminApi';
// ============================================================================
// Types
// ============================================================================
interface SnackbarState {
open: boolean;
message: string;
severity: 'success' | 'error';
}
interface RoleChangeDialogState {
open: boolean;
user: UserListItem | null;
newRole: 'investor' | 'admin' | 'super_admin';
}
// ============================================================================
// Constants
// ============================================================================
const ROLE_COLORS: Record<string, 'default' | 'primary' | 'error'> = {
investor: 'default',
admin: 'primary',
super_admin: 'error'
};
const ROLE_LABELS: Record<string, string> = {
investor: 'Investor',
admin: 'Admin',
super_admin: 'Super Admin'
};
// ============================================================================
// Main Component
// ============================================================================
export default function UserManagementPage(): ReactElement {
const [searchTerm, setSearchTerm] = useState('');
const [roleFilter, setRoleFilter] = useState<string>('all');
const [dialog, setDialog] = useState<RoleChangeDialogState>({
open: false,
user: null,
newRole: 'admin'
});
const [snackbar, setSnackbar] = useState<SnackbarState>({
open: false,
message: '',
severity: 'success'
});
const [deleteDialog, setDeleteDialog] = useState<{ open: boolean; user: UserListItem | null }>({
open: false,
user: null
});
const {data, isLoading, isError} = useListUsersQuery();
const [updateRole, {isLoading: isUpdating}] = useUpdateUserRoleMutation();
const [deleteUser, {isLoading: isDeleting}] = useDeleteUserMutation();
const users: UserListItem[] = data?.data.users ?? [];
const filteredUsers = users.filter((user) => {
const matchesSearch =
searchTerm === '' ||
user.username.toLowerCase().includes(searchTerm.toLowerCase()) ||
user.email.toLowerCase().includes(searchTerm.toLowerCase());
const matchesRole = roleFilter === 'all' || user.role === roleFilter;
return matchesSearch && matchesRole;
});
const showSnackbar = (message: string, severity: 'success' | 'error'): void => {
setSnackbar({open: true, message, severity});
};
const handleOpenDialog = (user: UserListItem, newRole: 'investor' | 'admin' | 'super_admin'): void => {
setDialog({open: true, user, newRole});
};
const handleCloseDialog = (): void => {
setDialog({open: false, user: null, newRole: 'admin'});
};
const handleConfirmDelete = (): void => {
if (deleteDialog.user === null) return;
deleteUser(deleteDialog.user.userId)
.unwrap()
.then((result) => {
showSnackbar(result.message, 'success');
setDeleteDialog({open: false, user: null});
})
.catch((error: { data?: { message?: string } }) => {
showSnackbar(error.data?.message ?? 'Failed to delete user', 'error');
setDeleteDialog({open: false, user: null});
});
};
const handleConfirmRoleChange = (): void => {
Iif (dialog.user === null) return;
updateRole({userId: dialog.user.userId, role: dialog.newRole})
.unwrap()
.then((result) => {
showSnackbar(result.message, 'success');
handleCloseDialog();
})
.catch((error: {data?: {message?: string}}) => {
showSnackbar(error.data?.message ?? 'Failed to update user role', 'error');
handleCloseDialog();
});
};
if (isLoading) {
return (
<Box sx={{display: 'flex', justifyContent: 'center', alignItems: 'center', minHeight: '50vh'}}>
<CircularProgress/>
</Box>
);
}
if (isError) {
return (
<Container maxWidth="lg" sx={{py: 4}}>
<Alert severity="error">Failed to load users</Alert>
</Container>
);
}
return (
<Box sx={{backgroundColor: 'background.default', minHeight: '100vh', py: 4}}>
<Container maxWidth="lg">
{/* Header */}
<Box sx={{mb: 4}}>
<Box sx={{display: 'flex', alignItems: 'center', mb: 1}}>
<AdminIcon sx={{mr: 1, fontSize: 32}} color="primary"/>
<Typography variant="h4" fontWeight="bold">
User Management
</Typography>
</Box>
<Typography variant="body1" color="text.secondary">
Manage user roles — promote users to Admin or Super Admin
</Typography>
</Box>
{/* Filters */}
<Paper sx={{p: 2, mb: 3, display: 'flex', gap: 2, alignItems: 'center', flexWrap: 'wrap'}}>
<TextField
size="small"
placeholder="Search by username or email..."
value={searchTerm}
onChange={(e) => {
setSearchTerm(e.target.value);
}}
sx={{minWidth: 280}}
/>
<FormControl size="small" sx={{minWidth: 150}}>
<InputLabel id="role-filter-label">Role</InputLabel>
<Select
labelId="role-filter-label"
value={roleFilter}
label="Role"
onChange={(e: SelectChangeEvent) => {
setRoleFilter(e.target.value);
}}
>
<MenuItem value="all">All Roles</MenuItem>
<MenuItem value="investor">Investor</MenuItem>
<MenuItem value="admin">Admin</MenuItem>
<MenuItem value="super_admin">Super Admin</MenuItem>
</Select>
</FormControl>
<Typography variant="body2" color="text.secondary" sx={{ml: 'auto'}}>
{String(filteredUsers.length)} user{filteredUsers.length !== 1 ? 's' : ''}
</Typography>
</Paper>
{/* Users Table */}
<TableContainer component={Paper}>
<Table>
<TableHead>
<TableRow>
<TableCell>Username</TableCell>
<TableCell>Email</TableCell>
<TableCell>Current Role</TableCell>
<TableCell>Status</TableCell>
<TableCell>Last Login</TableCell>
<TableCell align="right">Actions</TableCell>
</TableRow>
</TableHead>
<TableBody>
{filteredUsers.map((user) => (
<TableRow key={user.userId} hover>
<TableCell>
<Typography variant="body2" fontWeight={500}>
{user.username}
</Typography>
</TableCell>
<TableCell>{user.email}</TableCell>
<TableCell>
<Chip
label={ROLE_LABELS[user.role] ?? user.role}
color={ROLE_COLORS[user.role] ?? 'default'}
size="small"
/>
</TableCell>
<TableCell>
<Chip
label={user.isActive ? 'Active' : 'Inactive'}
color={user.isActive ? 'success' : 'default'}
size="small"
variant="outlined"
/>
</TableCell>
<TableCell>
{user.lastLogin !== null
? new Date(user.lastLogin).toLocaleString()
: 'Never'}
</TableCell>
<TableCell align="right">
<Box sx={{display: 'flex', gap: 1, justifyContent: 'flex-end'}}>
{user.role !== 'admin' && (
<Button
size="small"
variant="outlined"
color="primary"
onClick={() => {
handleOpenDialog(user, 'admin');
}}
>
Make Admin
</Button>
)}
{user.role !== 'super_admin' && (
<Button
size="small"
variant="outlined"
color="error"
onClick={() => {
handleOpenDialog(user, 'super_admin');
}}
>
Make Super Admin
</Button>
)}
{user.role !== 'investor' && (
<Button
size="small"
variant="outlined"
onClick={() => {
handleOpenDialog(user, 'investor');
}}
>
Demote to Investor
</Button>
)}
<Button
size="small"
variant="outlined"
color="error"
startIcon={<DeleteIcon/>}
onClick={() => {
setDeleteDialog({open: true, user});
}}
>
Delete
</Button>
</Box>
</TableCell>
</TableRow>
))}
{filteredUsers.length === 0 && (
<TableRow>
<TableCell colSpan={6} align="center" sx={{py: 4}}>
<Typography color="text.secondary">No users found</Typography>
</TableCell>
</TableRow>
)}
</TableBody>
</Table>
</TableContainer>
{/* Confirmation Dialog */}
<Dialog open={dialog.open} onClose={handleCloseDialog}>
<DialogTitle>Confirm Role Change</DialogTitle>
<DialogContent>
<DialogContentText component="div">
Are you sure you want to change <strong>{dialog.user?.username}</strong>'s
role from <Chip label={ROLE_LABELS[dialog.user?.role ?? ''] ?? dialog.user?.role}
size="small" sx={{mx: 0.5}}/> to <Chip
label={ROLE_LABELS[dialog.newRole]} size="small"
color={ROLE_COLORS[dialog.newRole] ?? 'default'} sx={{mx: 0.5}}/>?
</DialogContentText>
{dialog.newRole === 'super_admin' && (
<Alert severity="warning" sx={{mt: 2}}>
Super Admin has full system access including test data management, error logs, system
settings, and user management.
</Alert>
)}
</DialogContent>
<DialogActions>
<Button onClick={handleCloseDialog} disabled={isUpdating}>
Cancel
</Button>
<Button
onClick={handleConfirmRoleChange}
variant="contained"
color={dialog.newRole === 'investor' ? 'inherit' : 'primary'}
disabled={isUpdating}
startIcon={isUpdating ? <CircularProgress size={16}/> : undefined}
>
{isUpdating ? 'Updating...' : 'Confirm'}
</Button>
</DialogActions>
</Dialog>
{/* Delete Confirmation Dialog */}
<Dialog open={deleteDialog.open} onClose={() => { setDeleteDialog({open: false, user: null}); }}>
<DialogTitle>Delete User</DialogTitle>
<DialogContent>
<DialogContentText component="div">
Are you sure you want to permanently delete <strong>{deleteDialog.user?.username}</strong> ({deleteDialog.user?.email})?
</DialogContentText>
<Alert severity="error" sx={{mt: 2}}>
This will delete the user and all associated data: investor profile, account, loans, transactions, and sessions. This cannot be undone.
</Alert>
</DialogContent>
<DialogActions>
<Button onClick={() => { setDeleteDialog({open: false, user: null}); }} disabled={isDeleting}>
Cancel
</Button>
<Button
onClick={handleConfirmDelete}
variant="contained"
color="error"
disabled={isDeleting}
startIcon={isDeleting ? <CircularProgress size={16}/> : <DeleteIcon/>}
>
{isDeleting ? 'Deleting...' : 'Delete User'}
</Button>
</DialogActions>
</Dialog>
{/* Snackbar */}
<Snackbar
open={snackbar.open}
autoHideDuration={6000}
onClose={() => {
setSnackbar({...snackbar, open: false});
}}
anchorOrigin={{vertical: 'bottom', horizontal: 'right'}}
>
<Alert
onClose={() => {
setSnackbar({...snackbar, open: false});
}}
severity={snackbar.severity}
variant="filled"
>
{snackbar.message}
</Alert>
</Snackbar>
</Container>
</Box>
);
}
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