added pagination to the repository GetUser method.

added pagesixe to userlist object.
added total user count to enable PageCount to work correctly.
added GET_TOTAL_USER_COUNT and GET_ALL_USERS_PAGINATE sqlite procedures to support pagination.
updated methods in SQLiteRepository to support pagination procedures and pagination properties of UserList.
updated UsersController to support pagination parameters.
tidied html script tags.
added pagination buttons at the bottom of user page. including drop down to select PageSize
added setPageSize, goToUserPage and setPagination methods to the viewmodel.
updated other methods for sammy etc to work with pagesize and PageNumber params.
#11

DataCenter_Windows/WindowsDataCenter/Interfaces/IRepository.cs

@@ -11,7 +11,17 @@ namespace Interfaces
         /// Returns <see cref="UserList"/> with full list of users,
         /// plus a total user count. Pagination options are supported.
         /// </returns>
-        UserList GetUsers();
+        UserList GetUsers(int pageNumber=-1, int pageSize=-1);
+        ///// <summary>
+        ///// Get a paginated list of users
+        ///// </summary>
+        ///// <param name="pageNumber">The number of the page to retrieve</param>
+        ///// <param name="pageSize">The size of the pages</param>
+        ///// <returns>
+        ///// Returns <see cref="UserList"/> with full list of users,
+        ///// plus a total user count. Pagination options are supported.
+        ///// </returns>
+        //UserList GetUsers(int pageNumber, int pageSize);
         /// <summary>
         /// Search the user list for the following string
         /// </summary>

DataCenter_Windows/WindowsDataCenter/Interfaces/UserList.cs

@@ -7,10 +7,23 @@ namespace Interfaces
         public UserList()
         {
             Users = new List<User>();
+            PageSize = 10;
         }
         public string Query { get; set; }
         public int UserCount { get { return Users.Count; } }
+        public int TotalUserCount { get; set; }
         public List<User> Users { get; set; }
+
+        public int PageCount
+        {
+            get
+            {
+                if (TotalUserCount < PageSize)
+                    return 1;
+                return (TotalUserCount / PageSize);
+            }
+        }
+
         public int PageSize { get; set; }
         public int PageNumber { get; set; }
     }

DataCenter_Windows/WindowsDataCenter/SQLiteRepository/SQLiteProcedures.cs

@@ -18,5 +18,9 @@ namespace SQLiteRepository
         public const string SEARCH_USER_LIST = "SELECT * FROM " + nameof(UserIdentity) + " where(" + nameof(UserIdentity.FirstName) + " Like ? OR " + nameof(UserIdentity.LastName) + " Like ?)";
 
         public const string GET_LAST_TIMELOG_DIRECTION = "SELECT * FROM " + nameof(TimeLogDb) + " where " + nameof(TimeLogDb.UserId_FK) + " = ? order by " + nameof(TimeLogDb.SwipeEventDateTime) + " LIMIT 1";
+
+        public const string GET_ALL_USERS_PAGINATE = "select * from "+ nameof(UserIdentity)+" limit ? offset ?";
+
+        public const string GET_TOTAL_USER_COUNT = "select Max("+nameof(UserIdentity.Id)+") from " + nameof(UserIdentity);
     }
 }

DataCenter_Windows/WindowsDataCenter/SQLiteRepository/SQLiteRepository.cs

@@ -23,16 +23,35 @@ namespace SQLiteRepository
             _connection.CreateTable<TimeLogDb>();
         }
 
-        public UserList GetUsers()
+        public UserList GetUsers(int pageNumber=-1, int pageSize=-1)
         {
             var ret = new UserList();
-
+            List<UserIdentity> users;
-            var users = _connection.Query<UserIdentity>(SQLiteProcedures.GET_ALL_USERS);
+            int userCount = -1;
+            if (pageNumber == -1 && pageSize == -1)
+            {
+                users = _connection.Query<UserIdentity>(SQLiteProcedures.GET_ALL_USERS);
+                userCount = users.Count;
+            }
+            else
+            {
+                users = _connection.Query<UserIdentity>(SQLiteProcedures.GET_ALL_USERS_PAGINATE,
+                    pageSize, (pageNumber-1)*pageSize);
+                userCount = _connection.ExecuteScalar<int>(SQLiteProcedures.GET_TOTAL_USER_COUNT);
+            }
 
             if (!users.Any())
+            {
+                if (pageNumber == -1 && pageSize == -1)
                 {
                     ret.PageNumber = 1;
                     ret.PageSize = 20;
+                }
+                else
+                {
+                    ret.PageNumber = pageNumber;
+                    ret.PageSize = pageSize;
+                }
                 return ret;
             }
 
@@ -54,9 +73,17 @@ namespace SQLiteRepository
                 }
                 ret.Users.Add(userObj);
             }
-            ret.PageSize = 20;
+            if (pageNumber == -1 && pageSize == -1)
+            {
+                ret.PageSize = 1; //TODO: switch to ret.UserCount
                 ret.PageNumber = 1;
-
+            }
+            else
+            {
+                ret.PageSize = pageSize;
+                ret.PageNumber = pageNumber;
+            }
+            ret.TotalUserCount = userCount;
             return ret;
         }
 

DataCenter_Windows/WindowsDataCenter/WindowsDataCenter/Controllers/UsersController.cs

@@ -24,8 +24,21 @@ namespace WindowsDataCenter
         [CacheControl(MaxAge = 0)]
         public IHttpActionResult GetUsers([FromUri] string query = "",[FromUri] int pageSize = -1, [FromUri] int pageNumber =-1)
         {
-            var userList = query == string.Empty ? _repo.GetUsers() : _repo.Search(query);
+            UserList userList = new UserList();
-            userList.Query = query == string.Empty ? null : query;
+            pageNumber = pageNumber == -1 ? 1 : pageNumber;
+            pageSize = pageSize == -1 ? 1 : pageSize;
+            userList = query == string.Empty ? _repo.GetUsers(pageNumber, pageSize) : _repo.Search(query);
+            if (query != string.Empty)
+            {
+                userList.Query = query;
+                userList.PageNumber = 1;
+                userList.PageSize = userList.UserCount;
+            }
+            else
+                userList.Query = null;
+
+            userList.PageNumber = pageNumber;
+            userList.PageSize = pageSize;
 
             var msg = Request.CreateResponse(HttpStatusCode.OK, userList);
             return ResponseMessage(msg);

DataCenter_Windows/WindowsDataCenter/WindowsDataCenter/www/index.html

@@ -1,9 +1,7 @@
 <html>
 <head>
     <title>Flexi Time Data Viewer</title>
-    <link rel="shortcut icon" href="/favicon.ico" />
+    <link rel="shortcut icon" href="favicon.ico" />
-    <!--<script src="https://code.jquery.com/jquery-3.1.0.min.js" type="text/javascript"></script>
-    <script src="https://code.jquery.com/jquery-1.9.1.min.js"></script>-->
 
     <link rel="stylesheet preload" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
     <link rel="stylesheet preload" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.6.1/css/bootstrap-datepicker3.min.css">
@@ -83,6 +81,24 @@
                 </table>
                 <label>Total User Count: <span data-bind="text: UserCount"></span></label>
             </div>
+            <div class="row">
+                <ul class="pagination" data-bind="foreach: new Array(PageCount)">
+                    <li data-bind="css:{ active: $parent.PageNumber==($index()+1)}"><a data-bind="text: $index()+1, click: function(){$root.goToUserPage($index()+1);}"></a></li>
+                </ul>
+                <div class="dropdown">
+                    <button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true">
+                        Page Size
+                        <span class="caret"></span>
+                    </button>
+                    <ul class="dropdown-menu" aria-labelledby="dropdownMenu1">
+                        <li data-bind="css:{disabled:$root.userList().PageSize===-1}"><a data-bind="click: function(){$root.setPageSize(-1);}">All</a></li>
+                        <li data-bind="css:{disabled:$root.userList().PageSize===1}"><a data-bind="click: function(){$root.setPageSize(1);}">1</a></li>
+                        <li data-bind="css:{disabled:$root.userList().PageSize===10}"><a data-bind="click: function(){$root.setPageSize(10);}">10</a></li>
+                        <li data-bind="css:{disabled:$root.userList().PageSize===20}"><a data-bind="click: function(){$root.setPageSize(20);}">20</a></li>
+                        <li data-bind="css:{disabled:$root.userList().PageSize===50}"><a data-bind="click: function(){$root.setPageSize(50);}">50</a></li>
+                    </ul>
+                </div>
+            </div>
         </div>
     </div>
 

DataCenter_Windows/WindowsDataCenter/WindowsDataCenter/www/spa.js

@@ -35,11 +35,7 @@
         }
         var url = "timelogs" + "/" + userId;
         if (args) {
-            var appender = "?";
+            url = self.createRequestUrl(url, args, false, true);
-            args.forEach(function(arg) {
-                url += appender + arg.key + "=" + arg.value;
-                appender = "&";
-            });
         }
         location.hash = url;
     };
@@ -80,16 +76,16 @@
      * @param {string} routePath 
      * @param {Array<Object<string>} params - Key, Value object detailing the param name (key) and value (value). 
      * @param {boolean} requiresCallback - True - add callback function for JSONP/CORS.
-     * @param {boolean} isRelativePath - True, create a relative URL (without root).
+     * @param {boolean} isAbsolutePath - True, create a relative URL (without root).
      * @returns {string} the url generated
      * @example 
      * createRequestUrl("/api/endpoint", [{key:"param", value:"value"}], true, false);
      *  returns: "http://192.168.2.2/api/endpoint?param=value&callback=?"
      */
-    self.createRequestUrl = function (routePath, params, requiresCallback, isRelativePath) {
+    self.createRequestUrl = function (routePath, params, requiresCallback, isAbsoluteUrl) {
         var appender = "?";
         var url = "";
-        if (isRelativePath) {
+        if (isAbsoluteUrl) {
             url = self.apiEndpoints.root;
         }
         url = url + routePath;
@@ -136,6 +132,32 @@
     self.dismissAlert = function(data, event) {
         self.errorData(null);
     };
+    self.setPageSize = function(data) {
+        if (self.userList().PageSize !== data && self.userList().PageSize !== -1) {
+            self.setPagination(data, 1);
+        }
+    };
+    self.goToUserPage = function (data) {
+        if (self.userList().PageNumber !== data && self.userList().PageNumber !== -1) {
+            self.setPagination(self.userList().PageSize, data);
+        }
+    };
+    self.setPagination = function(pageSize, pageNumber) {
+        var args = [
+            {
+                key: "pageSize",
+                value: pageSize
+            },
+            {
+                key: "pageNumber",
+                value: pageNumber
+            }
+        ];
+
+        var url = self.createRequestUrl("users", args, false, false);
+        location.hash = url;
+        console.log(url);
+    };
     self.initDatePicker = function (selectedDate) {
         $("#weeklyDatePicker").datepicker({
             weekStart: 1,
@@ -170,8 +192,21 @@
             });
         }
     }
-    self.getUserList = function () {
+    self.getUserList = function (pageSize, pageNumber) {
-        var url = self.createRequestUrl(self.apiEndpoints.getUserList, null, false);
+        var args = null;
+        if (pageSize && pageNumber) {
+            args = [
+                {
+                    key: "pageSize",
+                    value: pageSize
+                },
+                {
+                    key: "pageNumber",
+                    value: pageNumber
+                }
+            ];
+        }
+        var url = self.createRequestUrl(self.apiEndpoints.getUserList, args, false);
         $.getJSON(url, function (res) {
             self.userList(res);
         }).fail(function (response, status, error) {
@@ -251,6 +286,8 @@
     Sammy(function () {
         this.get("#users", function () {
             var query = this.params.query;
+            var pageSize = this.params.pageSize;
+            var pageNumber = this.params.pageNumber;
             self.chosenMenuItemId("Users");
             self.chosenUserDetails(null);
             self.userList(null);
@@ -258,7 +295,7 @@
             if (query)
                 self.searchUsers(query);
             else
-                self.getUserList();
+                self.getUserList(pageSize, pageNumber);
             self.assignErrorObject(101, "An Error has occurred.. run away!!!", "test");
             //$.get("http://localhost:3000", { menu: this.params.menu }, self.chosenMenuData);
         });