Introduce new API for user search based on user attributes

Closes product-iots#6
See merge request entgra/carbon-device-mgt!31

components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/api/UserManagementService.java

@@ -529,6 +529,92 @@ public interface UserManagementService {
                     defaultValue = "5")
             @QueryParam("limit") int limit);
 
+    @GET
+    @Path(("/search"))
+    @ApiOperation(
+            produces = MediaType.APPLICATION_JSON,
+            httpMethod = "GET",
+            value = "Filter details of users based on the given claims",
+            notes = "You are able to manage users in WSO2 IoTS by adding, updating and removing users. If you wish to" +
+                    " filter and get a list of users registered with WSO2 IoTS, you can do so using this REST API",
+            tags = "User Management",
+            extensions = {
+                    @Extension(properties = {
+                            @ExtensionProperty(name = Constants.SCOPE, value = "perm:users:user-details")
+                    })
+            }
+    )
+    @ApiResponses(value = {
+            @ApiResponse(
+                    code = 200,
+                    message = "OK. \n Successfully fetched the list of users registered with WSO2 IoTS.",
+                    response = BasicUserInfoList.class,
+                    responseHeaders = {
+                            @ResponseHeader(
+                                    name = "Content-Type",
+                                    description = "The content type of the body"),
+                            @ResponseHeader(
+                                    name = "ETag",
+                                    description = "Entity Tag of the response resource.\n" +
+                                            "Used by caches, or in conditional requests."),
+                            @ResponseHeader(
+                                    name = "Last-Modified",
+                                    description = "Date and time the resource was last modified.\n" +
+                                            "Used by caches, or in conditional requests."),
+                    }),
+            @ApiResponse(
+                    code = 304,
+                    message = "Not Modified. \n Empty body because the client already has the latest version of " +
+                            "the requested resource.\n"),
+            @ApiResponse(
+                    code = 406,
+                    message = "Not Acceptable.\n The requested media type is not supported",
+                    response = ErrorResponse.class),
+            @ApiResponse(
+                    code = 500,
+                    message = "Internal Server Error. \n Server error occurred while fetching users.",
+                    response = ErrorResponse.class)
+    })
+    Response getUsers(
+            @ApiParam(
+                    name = "username",
+                    value = "Username of the user",
+                    required = false
+            )
+            @QueryParam("username") String username,
+            @ApiParam(
+                    name = "firstName",
+                    value = "First Name of the user",
+                    required = false
+            )
+            @QueryParam("firstName") String firstName,
+            @ApiParam(
+                    name = "lastName",
+                    value = "Last Name of the user",
+                    required = false
+            )
+            @QueryParam("lastName")String lastName,
+            @ApiParam(
+                    name = "emailAddress",
+                    value = "Email Address of the user",
+                    required = false
+            )
+            @QueryParam("emailAddress")String emailAddress,
+            @HeaderParam("If-Modified-Since") String timestamp,
+            @ApiParam(
+                    name = "offset",
+                    value = "The starting pagination index for the complete list of qualified items.",
+                    required = false,
+                    defaultValue = "0")
+            @QueryParam("offset") int offset,
+            @ApiParam(
+                    name = "limit",
+                    value = "Provide how many user details you require from the starting pagination index/offset.",
+                    required = false,
+                    defaultValue = "5")
+            @QueryParam("limit") int limit
+    );
+
     @GET
     @Path("/count")
     @ApiOperation(

components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImpl.java

@@ -426,6 +426,104 @@ public class UserManagementServiceImpl implements UserManagementService {
         }
     }
 
+    @GET
+    @Path("/search")
+    @Override
+    public Response getUsers(@QueryParam("username") String username, @QueryParam("firstName") String firstName,
+            @QueryParam("lastName") String lastName, @QueryParam("emailAddress") String emailAddress,
+            @HeaderParam("If-Modified-Since") String timestamp, @QueryParam("offset") int offset,
+            @QueryParam("limit") int limit) {
+
+        if (RequestValidationUtil.isNonFilterRequest(username,firstName, lastName, emailAddress)) {
+            return getUsers(null, timestamp, offset, limit);
+        }
+
+        RequestValidationUtil.validatePaginationParameters(offset, limit);
+
+        if(log.isDebugEnabled()) {
+            log.debug("Filtering users - filter: {username: " + username  +", firstName: " + firstName + ", lastName: "
+                    + lastName + ", emailAddress: " + emailAddress + "}");
+        }
+
+        if (limit == 0) {
+            limit = Constants.DEFAULT_PAGE_LIMIT;
+        }
+
+        List<BasicUserInfo> filteredUserList = new ArrayList<>();
+        List<String> commonUsers = null, tempList;
+
+        try {
+            if (StringUtils.isNotEmpty(username)) {
+                commonUsers = getUserList(null, username);
+            }
+
+            if (!skipSearch(commonUsers) && StringUtils.isNotEmpty(firstName)) {
+                tempList = getUserList(Constants.USER_CLAIM_FIRST_NAME, firstName);
+                if (commonUsers == null) {
+                    commonUsers = tempList;
+                } else {
+                    commonUsers.retainAll(tempList);
+                }
+            }
+
+            if (!skipSearch(commonUsers) && StringUtils.isNotEmpty(lastName)) {
+                tempList = getUserList(Constants.USER_CLAIM_LAST_NAME, lastName);
+                if (commonUsers == null || commonUsers.size() == 0) {
+                    commonUsers = tempList;
+                } else {
+                    commonUsers.retainAll(tempList);
+                }
+            }
+
+            if (!skipSearch(commonUsers) && StringUtils.isNotEmpty(emailAddress)) {
+                tempList = getUserList(Constants.USER_CLAIM_EMAIL_ADDRESS, emailAddress);
+                if (commonUsers == null || commonUsers.size() == 0) {
+                    commonUsers = tempList;
+                } else {
+                    commonUsers.retainAll(tempList);
+                }
+            }
+
+            BasicUserInfo basicUserInfo;
+            if (commonUsers != null) {
+                for (String user : commonUsers) {
+                    basicUserInfo = new BasicUserInfo();
+                    basicUserInfo.setUsername(user);
+                    basicUserInfo.setEmailAddress(getClaimValue(user, Constants.USER_CLAIM_EMAIL_ADDRESS));
+                    basicUserInfo.setFirstname(getClaimValue(user, Constants.USER_CLAIM_FIRST_NAME));
+                    basicUserInfo.setLastname(getClaimValue(user, Constants.USER_CLAIM_LAST_NAME));
+                    filteredUserList.add(basicUserInfo);
+                }
+            }
+
+            int toIndex = offset + limit;
+            int listSize = filteredUserList.size();
+            int lastIndex = listSize - 1;
+
+            List<BasicUserInfo> offsetList;
+            if (offset <= lastIndex) {
+                if (toIndex <= listSize) {
+                    offsetList = filteredUserList.subList(offset, toIndex);
+                } else {
+                    offsetList = filteredUserList.subList(offset, listSize);
+                }
+            } else {
+                offsetList = new ArrayList<>();
+            }
+
+            BasicUserInfoList result = new BasicUserInfoList();
+            result.setList(offsetList);
+            result.setCount(commonUsers != null ? commonUsers.size() : 0);
+
+            return Response.status(Response.Status.OK).entity(result).build();
+        } catch (UserStoreException e) {
+            String msg = "Error occurred while retrieving the list of users.";
+            log.error(msg, e);
+            return Response.serverError().entity(
+                    new ErrorResponse.ErrorResponseBuilder().setMessage(msg).build()).build();
+        }
+    }
+
     @GET
     @Path("/count")
     @Override
@@ -700,4 +798,47 @@ public class UserManagementServiceImpl implements UserManagementService {
         return DeviceManagementConstants.EmailAttributes.DEFAULT_ENROLLMENT_TEMPLATE;
     }
 
+    /**
+     * Searches users which matches a given filter based on a claim
+     *
+     * @param claim the claim value to apply the filter. If <code>null</code> users will be filtered by username.
+     * @param filter the search query.
+     * @return <code>List<String></code> of users which matches.
+     * @throws UserStoreException If unable to search users.
+     */
+    private ArrayList<String> getUserList(String claim, String filter) throws UserStoreException {
+        String defaultFilter = "*";
+
+        org.wso2.carbon.user.core.UserStoreManager userStoreManager =
+                (org.wso2.carbon.user.core.UserStoreManager) DeviceMgtAPIUtils.getUserStoreManager();
+
+        String appliedFilter = filter + defaultFilter;
+
+        String[] users;
+        if (log.isDebugEnabled()) {
+            log.debug("Searching Users - claim: " + claim + " filter: " + appliedFilter);
+        }
+        if (StringUtils.isEmpty(claim)) {
+            users = userStoreManager.listUsers(appliedFilter, -1);
+        } else {
+            users = userStoreManager.getUserList(claim, appliedFilter, null);
+        }
+
+        if (log.isDebugEnabled()) {
+            log.debug("Returned user count: " + users.length);
+        }
+
+        return new ArrayList<>(Arrays.asList(users));
+    }
+
+    /**
+     * User search provides an AND search result and if either of the filter returns an empty set of users, there is no
+     * need to carry on the search further. This method decides whether to carry on the search or not.
+     *
+     * @param commonUsers current filtered user list.
+     * @return <code>true</code> if further search is needed.
+     */
+    private boolean skipSearch(List<String> commonUsers) {
+        return commonUsers != null && commonUsers.size() == 0;
+    }
 }

components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/util/RequestValidationUtil.java

@@ -18,6 +18,7 @@
  */
 package org.wso2.carbon.device.mgt.jaxrs.service.impl.util;
 
+import org.apache.commons.lang.StringUtils;
 import org.wso2.carbon.device.mgt.jaxrs.beans.Scope;
 import org.wso2.carbon.device.mgt.common.DeviceIdentifier;
 import org.wso2.carbon.device.mgt.common.configuration.mgt.PlatformConfiguration;
@@ -353,4 +354,9 @@ public class RequestValidationUtil {
         }
     }
 
+    public static boolean isNonFilterRequest(String username, String firstName, String lastName, String emailAddress) {
+        return StringUtils.isEmpty(username) && StringUtils.isEmpty(firstName) && StringUtils.isEmpty(lastName)
+                && StringUtils.isEmpty(emailAddress);
+    }
+
 }

components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/pages/cdmf.page.users/public/js/listing.js

@@ -275,10 +275,11 @@ function loadUsers() {
 
         $(data.users).each(function (index) {
             objects.push({
-                filter: htmlspecialchars(data.users[index].username),
-                firstname: htmlspecialchars(data.users[index].firstname) ? htmlspecialchars(data.users[index].firstname) : "",
-                lastname: htmlspecialchars(data.users[index].lastname) ? htmlspecialchars(data.users[index].lastname) : "",
+                username: htmlspecialchars(data.users[index].username),
+                firstName: htmlspecialchars(data.users[index].firstname) ? htmlspecialchars(data.users[index].firstname) : "",
+                lastName: htmlspecialchars(data.users[index].lastname) ? htmlspecialchars(data.users[index].lastname) : "",
                 emailAddress: htmlspecialchars(data.users[index].emailAddress) ? htmlspecialchars(data.users[index].emailAddress) : "",
+                namePattern: htmlspecialchars(data.users[index].firstname) + ' ' + htmlspecialchars(data.users[index].lastname),
                 DT_RowId: "user-" + htmlspecialchars(data.users[index].username)
             })
         });
@@ -304,49 +305,78 @@ function loadUsers() {
     //noinspection JSUnusedLocalSymbols
     var columns = [
         {
+            targets: 0,
             class: "remove-padding icon-only content-fill",
-            data: null,
-            render: function (data, type, row, meta) {
-                return '<div class="thumbnail icon viewEnabledIcon" data-url="' + context + '/user/view?username=' + data.filter + '">' +
+            data: 'username',
+            render: function (username, type, row, meta) {
+                return '<div class="thumbnail icon viewEnabledIcon" data-url="' + context + '/user/view?username=' + username + '">' +
                     '<i class="square-element text fw fw-user" style="font-size: 74px;"></i>' +
                     '</div>';
             }
         },
         {
+            targets: 1,
             class: "",
-            data: null,
-            render: function (data, type, row, meta) {
-                if (!data.firstname && !data.lastname) {
+            data: 'namePattern',
+            render: function (namePattern, type, row, meta) {
+                if (!namePattern) {
                     return "";
-                } else if (data.firstname && data.lastname) {
-                    return "<h4>" + data.firstname + " " + data.lastname + "</h4>";
+                } else {
+                    return "<h4>" + namePattern + "</h4>";
                 }
             }
         },
         {
+            targets: 2,
             class: "remove-padding-top",
-            data: 'filter',
-            render: function (filter, type, row, meta) {
-                return '<i class="fw-user"></i>' + filter;
+            data: 'username',
+            render: function (username, type, row, meta) {
+                return '<i class="fw-user"></i>' + username;
+            }
+        },
+        {
+            targets: 3,
+            class: "hidden",
+            data: 'firstName',
+            render: function (firstName, type, row, meta) {
+                if (!firstName) {
+                    return "";
+                } else if (firstName) {
+                    return "<h4>" + firstName + "</h4>";
+                }
+            }
+        },
+        {
+            targets: 4,
+            class: "hidden",
+            data: 'lastName',
+            render: function (lastName, type, row, meta) {
+                if (!lastName) {
+                    return "";
+                } else if (lastName) {
+                    return "<h4>" + lastName + "</h4>";
+                }
             }
         },
         {
+            targets: 5,
             class: "remove-padding-top",
-            data: null,
-            render: function (data, type, row, meta) {
-                if (!data.emailAddress) {
+            data: 'emailAddress',
+            render: function (emailAddress, type, row, meta) {
+                if (!emailAddress) {
                     return "";
                 } else {
-                    return "<a href='mailto:" + data.emailAddress + "' ><i class='fw-mail'></i>" + data.emailAddress + "</a>";
+                    return "<a href='mailto:" + emailAddress + "' ><i class='fw-mail'></i>" + emailAddress + "</a>";
                 }
             }
         },
         {
+            targets: 6,
             class: "text-right content-fill text-left-on-grid-view no-wrap tooltip-overflow-fix",
             data: null,
             render: function (data, type, row, meta) {
                 var editbtn = '<a data-toggle="tooltip" data-placement="top" title="Edit User"href="' + context +
-                    '/user/edit?username=' + encodeURIComponent(data.filter) + '" data-username="' + data.filter + '" ' +
+                    '/user/edit?username=' + encodeURIComponent(data.username) + '" data-username="' + data.username + '" ' +
                     'data-click-event="edit-form" ' +
                     'class="btn padding-reduce-on-grid-view edit-user-link" data-placement="top" data-toggle="tooltip" data-original-title="Edit"> ' +
                     '<span class="fw-stack"> ' +
@@ -354,18 +384,18 @@ function loadUsers() {
                     '<i class="fw fw-edit fw-stack-1x"></i>' +
                     '</span><span class="hidden-xs hidden-on-grid-view">Edit</span></a>';
 
-                var resetPasswordbtn = '<a data-toggle="tooltip" data-placement="top" title="Reset Password" href="#" data-username="' + data.filter + '" data-userid="' + data.filter + '" ' +
+                var resetPasswordbtn = '<a data-toggle="tooltip" data-placement="top" title="Reset Password" href="#" data-username="' + data.username + '" data-userid="' + data.username + '" ' +
                     'data-click-event="edit-form" ' +
-                    'onclick="javascript:resetPassword(\'' + data.filter + '\')" ' +
+                    'onclick="javascript:resetPassword(\'' + data.username + '\')" ' +
                     'class="btn padding-reduce-on-grid-view remove-user-link" data-placement="top" data-toggle="tooltip" data-original-title="Reset Password">' +
                     '<span class="fw-stack">' +
                     '<i class="fw fw-circle-outline fw-stack-2x"></i>' +
                     '<i class="fw fw-key fw-stack-1x"></i>' +
                     '</span><span class="hidden-xs hidden-on-grid-view">Reset Password</span></a>';
 
-                var removebtn = '<a data-toggle="tooltip" data-placement="top" title="Remove User" href="#" data-username="' + data.filter + '" data-userid="' + data.filter + '" ' +
+                var removebtn = '<a data-toggle="tooltip" data-placement="top" title="Remove User" href="#" data-username="' + data.username + '" data-userid="' + data.username + '" ' +
                     'data-click-event="remove-form" ' +
-                    'onclick="javascript:removeUser(\'' + data.filter + '\')" ' +
+                    'onclick="javascript:removeUser(\'' + data.username + '\')" ' +
                     'class="btn padding-reduce-on-grid-view remove-user-link" data-placement="top" data-toggle="tooltip" data-original-title="Remove">' +
                     '<span class="fw-stack">' +
                     '<i class="fw fw-circle-outline fw-stack-2x"></i>' +
@@ -375,20 +405,19 @@ function loadUsers() {
                 var returnbtnSet = '';
                 var adminUser = $("#user-table").data("user");
                 var currentUser = $("#user-table").data("logged-user");
-                if ($("#can-edit").length > 0 && adminUser !== data.filter) {
+                if ($("#can-edit").length > 0 && adminUser !== data.username) {
                     returnbtnSet = returnbtnSet + editbtn;
                 }
-                if ($("#can-reset-password").length > 0 && adminUser !== data.filter) {
+                if ($("#can-reset-password").length > 0 && adminUser !== data.username) {
                     returnbtnSet = returnbtnSet + resetPasswordbtn;
                 }
-                if ($("#can-remove").length > 0 && adminUser !== data.filter && currentUser !== data.filter) {
+                if ($("#can-remove").length > 0 && adminUser !== data.username && currentUser !== data.username) {
                     returnbtnSet = returnbtnSet + removebtn;
                 }
 
                 return returnbtnSet;
             }
         }
-
     ];
 
     var options = {
@@ -400,18 +429,31 @@ function loadUsers() {
         "sorting": false
     };
 
-    $('#user-grid').datatables_extended_serverside_paging(settings, '/api/device-mgt/v1.0/users', dataFilter, columns, fnCreatedRow, null, options);
+    $('#user-grid').datatables_extended_serverside_paging(
+        settings,
+        '/api/device-mgt/v1.0/users/search',
+        dataFilter,
+        columns,
+        fnCreatedRow,
+        null,
+        options
+    );
+
     $(loadingContentView).hide();
 
 }
 
 $(document).ready(function () {
     loadUsers();
+
     $(function () {
         $('[data-toggle="tooltip"]').tooltip()
     });
+
     if (!$("#can-invite").val()) {
         $("#invite-user-button").remove();
     }
 
+    $("#user-grid_filter").hide();
+
 });

components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/pages/cdmf.page.users/users.hbs

@@ -75,10 +75,25 @@
                id="user-grid">
             <thead>
             <tr class="sort-row">
+                <th class="no-sort"></th>
+                <th class="no-sort"></th>
                 <th>By Username</th>
+                <th>By First Name</th>
+                <th>By Last Name</th>
+                <th>By Email</th>
+                <th class="no-sort"></th>
+            </tr>
+            <tr class="filter-row filter-box">
+                <th class="no-sort"></th>
+                <th class="no-sort"></th>
+                <th data-for="By Username" class="text-filter"></th>
+                <th data-for="By First Name" class="text-filter"></th>
+                <th data-for="By Last Name" class="text-filter"></th>
+                <th data-for="By Email" class="text-filter"></th>
+                <th class="no-sort"></th>
             </tr>
             <tr class="bulk-action-row hidden">
-                <th colspan="3">
+                <th colspan="7">
                     <ul class="tiles">
                         <li class="square">
                             <a id="invite-user-link" href="#" data-click-event="remove-form" class="btn square-element"
@@ -101,6 +116,9 @@
         <div class="sort-title">Sort By</div>
         <div class="sort-options">
             <a href="#">By Username</a>
+            <a href="#">By First Name</a>
+            <a href="#">By Last Name</a>
+            <a href="#">By Email</a>
         </div>
     </div>