Refactor group API

sources/Manifest.uc

@@ -24,7 +24,8 @@ defaultproperties
 {
     features(0)     = class'Aliases_Feature'
     features(1)     = class'Commands_Feature'
-    features(2)     = class'Avarice_Feature'
+    features(2)     = class'Users_Feature'
+    features(3)     = class'Avarice_Feature'
     testCases(0)    = class'TEST_Base'
     testCases(1)    = class'TEST_ActorService'
     testCases(2)    = class'TEST_Boxes'

sources/Users/User.uc

@@ -77,11 +77,11 @@ public final function Initialize(UserID initID, int initKey)
     if (initID != none) {
         initID.NewRef();
     }
-    LoadLocalGroups();
+    //LoadLocalGroups();
-    groupsReadingTask = ReadPersistentData(P("Acedia"), P("UserGroups"));
+    /*groupsReadingTask = ReadPersistentData(P("Acedia"), P("UserGroups"));
     if (groupsReadingTask != none) {
         groupsReadingTask.connect = LoadDBGroups;
-    }
+    }*/
 }
 
 /**

sources/Users/UserAPI.uc

@@ -230,6 +230,260 @@ public final function User FetchByKey(int userKey)
     return result;
 }
 
+/**
+ *  Returns names of all groups available for the user with a SteamID given by
+ *  `steamID`.
+ *
+ *      In case active config of `Users_Feature` is set up to load user groups
+ *  from a database (either local or remote), the returned value is a locally
+ *  cached one. This helps us avoid having to query database each time we want
+ *  to check something about user groups, but it also means we might have
+ *  an outdated information.
+ *
+ *  @see `GetGroupsForUserID()` / `GetGroupsForUser()`.
+ *
+ *  @param  steamID SteamID of the user.
+ *      Must be specified in a SteamID64 format, e.g. "76561197960287930".
+ *  @return Array with names of the groups of the specified user.
+ *      All array elements are guaranteed to be not-`none`, unique and in
+ *      lower case.
+ *      If passed SteamID is `none` or data wasn't yet loaded - returns empty
+ *      array.
+ */
+public final /*unreal*/ function array<Text> GetGroupsForSteamID(
+    BaseText steamID)
+{
+    local Users_Feature usersFeature;
+    local array<Text>   result;
+
+    usersFeature = Users_Feature(class'Users_Feature'.static
+        .GetEnabledInstance());
+    if (usersFeature == none) {
+        return result;
+    }
+    result = usersFeature.GetGroupsForSteamID(steamID);
+    usersFeature.FreeSelf();
+    return result;
+}
+
+/**
+ *  Returns names of all groups available for the user with a SteamID given by
+ *  `steamID`.
+ *
+ *      In case active config of `Users_Feature` is set up to load user groups
+ *  from a database (either local or remote), the returned value is a locally
+ *  cached one. This helps us avoid having to query database each time we want
+ *  to check something about user groups, but it also means we might have
+ *  an outdated information.
+ *
+ *  @see `GetGroupsForUserID()` / `GetGroupsForUser()`.
+ *
+ *  @param  steamID SteamID of the user.
+ *      Must be specified in a SteamID64 format, e.g. "76561197960287930".
+ *  @return Array with names of the groups of the specified user.
+ *      All array elements are guaranteed to be not-`none`, unique and in
+ *      lower case.
+ *      If data wasn't yet loaded - returns empty array.
+ */
+public final /*unreal*/ function array<Text> GetGroupsForSteamID_S(
+    string steamID)
+{
+    local Users_Feature usersFeature;
+    local array<Text>   result;
+
+    usersFeature = Users_Feature(class'Users_Feature'.static
+        .GetEnabledInstance());
+    if (usersFeature == none) {
+        return result;
+    }
+    result = usersFeature.GetGroupsForSteamID_S(steamID);
+    usersFeature.FreeSelf();
+    return result;
+}
+
+
+/**
+ *  Returns names of all groups available for the user with an ID given by `id`.
+ *
+ *      In case active config of `Users_Feature` is set up to load user groups
+ *  from a database (either local or remote), the returned value is a locally
+ *  cached one. This helps us avoid having to query database each time we want
+ *  to check something about user groups, but it also means we might have
+ *  an outdated information.
+ *
+ *  @see `GetGroupsForSteamID()` / `GetGroupsForUser()`.
+ *
+ *  @param  id  ID of the user.
+ *  @return Array with names of the groups of the specified user.
+ *      All array elements are guaranteed to be not-`none`, unique and in
+ *      lower case.
+ *      If data wasn't yet loaded - returns empty array.
+ */
+public final function array<Text> GetGroupsForUserID(UserID id)
+{
+    local Users_Feature usersFeature;
+    local array<Text>   result;
+
+    usersFeature = Users_Feature(class'Users_Feature'.static
+        .GetEnabledInstance());
+    if (usersFeature == none) {
+        return result;
+    }
+    result = usersFeature.GetGroupsForUserID(id);
+    usersFeature.FreeSelf();
+    return result;
+}
+
+/**
+ *  Returns names of all groups available for the user given by `user`.
+ *
+ *      In case active config of `Users_Feature` is set up to load user groups
+ *  from a database (either local or remote), the returned value is a locally
+ *  cached one. This helps us avoid having to query database each time we want
+ *  to check something about user groups, but it also means we might have
+ *  an outdated information.
+ *
+ *  @see `GetGroupsForSteamID()` / `GetGroupsForUserID()`.
+ *
+ *  @param  user    Reference to `User` object that represent the user we are to
+ *      find groups for.
+ *  @return Array with names of the groups of the specified user.
+ *      All array elements are guaranteed to be not-`none`, unique and in
+ *      lower case.
+ *      If data wasn't yet loaded - returns empty array.
+ */
+public final function array<Text> GetGroupsForUser(User user)
+{
+    local Users_Feature usersFeature;
+    local array<Text>   result;
+
+    usersFeature = Users_Feature(class'Users_Feature'.static
+        .GetEnabledInstance());
+    if (usersFeature == none) {
+        return result;
+    }
+    result = usersFeature.GetGroupsForUser(user);
+    usersFeature.FreeSelf();
+    return result;
+}
+
+/**
+ *  Returns `UserID`s of all users that belong into the group named `groupName`.
+ *
+ *      In case active config of `Users_Feature` is set up to load user groups
+ *  from a database (either local or remote), the returned value is a locally
+ *  cached one. This helps us avoid having to query database each time we want
+ *  to check something about user groups, but it also means we might have
+ *  an outdated information.
+ *
+ *  @param  groupName   Name of the group. Case-insensitive.
+ *  @return Array with `UserID`s for every user in the user group named
+ *      `groupName`. All array elements are guaranteed to be not-`none` and
+ *      correspond to unique players.
+ *      If data wasn't yet loaded - returns empty array.
+ */
+public final function array<UserID> GetGroupMembers(Text groupName)
+{
+    local Users_Feature usersFeature;
+    local array<UserID> result;
+
+    usersFeature = Users_Feature(class'Users_Feature'.static
+        .GetEnabledInstance());
+    if (usersFeature == none) {
+        return result;
+    }
+    result = usersFeature.GetGroupMembers(groupName);
+    usersFeature.FreeSelf();
+    return result;
+}
+
+/**
+ *  Checks whether user with an ID given by `id` belongs to the group named
+ *  `groupName`.
+ *
+ *      In case active config of `Users_Feature` is set up to load user groups
+ *  from a database (either local or remote), the returned value is a locally
+ *  cached one. This helps us avoid having to query database each time we want
+ *  to check something about user groups, but it also means we might have
+ *  an outdated information.
+ *
+ *  @param  id          ID of the user.
+ *  @param  groupName   Name of the group. Case-insensitive.
+ *  @return `true` if user with an ID given by `id` belongs to the group named
+ *      `groupName` and false if: it does not, either of the parameters is
+ *      invalid or group data wasn't yet properly loaded.
+ */
+public final function bool IsUserIDInGroup(UserID id, Text groupName)
+{
+    local Users_Feature usersFeature;
+    local bool          result;
+
+    usersFeature = Users_Feature(class'Users_Feature'.static
+        .GetEnabledInstance());
+    if (usersFeature == none) {
+        return result;
+    }
+    result = usersFeature.IsUserIDInGroup(id, groupName);
+    usersFeature.FreeSelf();
+    return result;
+}
+
+/**
+ *  Checks whether user given by `user` belongs to the group named `groupName`.
+ *
+ *      In case active config of `Users_Feature` is set up to load user groups
+ *  from a database (either local or remote), the returned value is a locally
+ *  cached one. This helps us avoid having to query database each time we want
+ *  to check something about user groups, but it also means we might have
+ *  an outdated information.
+ *
+ *  @param  user    Reference to `User` object that represent the user we are to
+ *      check for belonging to the group.
+ *  @param  groupName   Name of the group. Case-insensitive.
+ *  @return `true` if user with an ID given by `id` belongs to the group named
+ *      `groupName` and false if: it does not, either of the parameters is
+ *      invalid or group data wasn't yet properly loaded.
+ */
+public final function bool IsUserInGroup(User user, Text groupName)
+{
+    local Users_Feature usersFeature;
+    local bool          result;
+
+    usersFeature = Users_Feature(class'Users_Feature'.static
+        .GetEnabledInstance());
+    if (usersFeature == none) {
+        return result;
+    }
+    result = usersFeature.IsUserInGroup(user, groupName);
+    usersFeature.FreeSelf();
+    return result;
+}
+
+/**
+ *  Checks whether user groups' data was already loaded from the source
+ *  (either config file or local/remote database).
+ *
+ *  Data loaded once is cached and this method returning `true` does not
+ *  guarantee that is isn't outdated. Additional, asynchronous queries must be
+ *  made to check for that.
+ *
+ *  @return `true` if user groups' data was loaded and `false` otherwise.
+ */
+public final function bool IsUserGroupDataLoaded()
+{
+    local Users_Feature usersFeature;
+    local bool          result;
+
+    usersFeature = Users_Feature(class'Users_Feature'.static
+        .GetEnabledInstance());
+    if (usersFeature == none) {
+        return result;
+    }
+    result = usersFeature.IsUserGroupDataLoaded();
+    usersFeature.FreeSelf();
+    return result;
+}
+
 defaultproperties
 {
     userdataDBLink = "[local]database:/users"

sources/Users/Users_Feature.uc

@@ -1,5 +1,8 @@
 /**
- *      ???
+ *      Feature for managing Acedia's user groups. Supports both config- and
+ *  database-defined information about group sources. An instance of this
+ *  feature is necessary for functioning of Acedia's `UserAPI` methods related
+ *  to user groups.
  *      Copyright 2022 Anton Tarasenko
  *------------------------------------------------------------------------------
  * This file is part of Acedia.
@@ -21,9 +24,9 @@ class Users_Feature extends Feature;
 
 var private /*config*/ bool             useDatabase;
 var private /*config*/ string           databaseLink;
-var private /*config*/ array<string>    userGroup;
+var private /*config*/ array<string>    availableUserGroups;
 
-//  Defines order
+//  List of all available user groups for current config
 var private array<Text> loadedUserGroups;
 //  `HashTable` (with group name keys) that stores `HashTable`s used as
 //  a set data structure (has user id as keys and always `none` as a value).
@@ -39,7 +42,8 @@ protected function SwapConfig(FeatureConfig config)
     }
     useDatabase         = newConfig.useDatabase;
     databaseLink        = newConfig.databaseLink;
-    userGroup       = newConfig.localUserGroup;
+    availableUserGroups = newConfig.localUserGroup;
+    LoadLocalData();
 }
 
 private final function LoadLocalData()
@@ -56,10 +60,10 @@ private final function LoadLocalGroupNames()
 
     _.memory.FreeMany(loadedUserGroups);
     loadedUserGroups.length = 0;
-    for (i = 0; i < userGroup.length; i += 1)
+    for (i = 0; i < availableUserGroups.length; i += 1)
     {
         isDuplicate = false;
-        nextUserGroup = _.text.FromString(userGroup[i]);
+        nextUserGroup = _.text.FromString(availableUserGroups[i]);
         for(j = 0; j < loadedUserGroups.length; j += 1)
         {
             if (loadedUserGroups[j].Compare(nextUserGroup, SCASE_INSENSITIVE))
@@ -123,14 +127,15 @@ private final function SaveLocalData()
     if (useDatabase)                    return;
     if (loadedGroupToUsersMap == none)  return;
 
-    userGroup.length = 0;
+    availableUserGroups.length = 0;
     iter = HashTableIterator(loadedGroupToUsersMap.Iterate());
     while (!iter.HasFinished())
     {
         nextGroup = Text(iter.GetKey());
         if (nextGroup != none)
         {
-            userGroup[userGroup.length] = nextGroup.ToString();
+            availableUserGroups[availableUserGroups.length] =
+                nextGroup.ToString();
             nextGroup.FreeSelf();
         }
         iter.Next();
@@ -144,31 +149,46 @@ private final function SaveLocalData()
     }
     if (currentConfig != none)
     {
-        currentConfig.localUserGroup = userGroup;
+        currentConfig.localUserGroup = availableUserGroups;
         //  !!! save config !!!
     }
     _.memory.Free(currentConfig);
     _.memory.Free(activeConfigName);
 }
 
-public final function array<Text> GetGroupsForUserID(UserID user)
+/**
-{
+ *  Returns names of all groups available for the user with a SteamID given by
-    return GetLocalGroupsForUserID(user);
+ *  `steamID`.
-}
+ *
-
+ *      In case this feature is configured to load user groups from a database
-private final function array<Text> GetLocalGroupsForUserID(UserID id)
+ *  (either local or remote), the returned value is a locally cached one.
+ *  This helps us avoid having to query database each time we want to check
+ *  something about user groups, but it also means we might have an outdated
+ *  information.
+ *
+ *  @see `GetGroupsForUserID()` / `GetGroupsForUser()`.
+ *
+ *  @param  steamID SteamID of the user.
+ *      Must be specified in a SteamID64 format, e.g. "76561197960287930".
+ *  @return Array with names of the groups of the specified user.
+ *      All array elements are guaranteed to be not-`none`, unique and in
+ *      lower case.
+ *      If passed SteamID is `none` or data wasn't yet loaded - returns empty
+ *      array.
+ */
+public final /*unreal*/ function array<Text> GetGroupsForSteamID(
+    BaseText steamID)
 {
-    local Text              steamID;
+    local Text              immutableSteamID;
     local array<Text>       result;
     local HashTableIterator iter;
     local Text              nextGroup;
     local HashTable         nextGroupUsers;
 
     if (loadedGroupToUsersMap == none)  return result;
-    if (id == none)                     return result;
-    steamID = id.GetSteamID64String();
     if (steamID == none)                return result;
 
+    immutableSteamID = steamID.LowerCopy();
     iter = HashTableIterator(loadedGroupToUsersMap.Iterate());
     while (!iter.HasFinished())
     {
@@ -183,16 +203,91 @@ private final function array<Text> GetLocalGroupsForUserID(UserID id)
         _.memory.Free(nextGroup);
         _.memory.Free(nextGroupUsers);
     }
-    steamID.FreeSelf();
+    immutableSteamID.FreeSelf();
     return result;
 }
 
-public final function array<Text> GetGroupsForUser(User user)
+/**
+ *  Returns names of all groups available for the user with a SteamID given by
+ *  `steamID`.
+ *
+ *      In case this feature is configured to load user groups from a database
+ *  (either local or remote), the returned value is a locally cached one.
+ *  This helps us avoid having to query database each time we want to check
+ *  something about user groups, but it also means we might have an outdated
+ *  information.
+ *
+ *  @see `GetGroupsForUserID()` / `GetGroupsForUser()`.
+ *
+ *  @param  steamID SteamID of the user.
+ *      Must be specified in a SteamID64 format, e.g. "76561197960287930".
+ *  @return Array with names of the groups of the specified user.
+ *      All array elements are guaranteed to be not-`none`, unique and in
+ *      lower case.
+ *      If data wasn't yet loaded - returns empty array.
+ */
+public final /*unreal*/ function array<Text> GetGroupsForSteamID_S(
+    string steamID)
+{
+    local array<Text> result;
+    local MutableText wrapper;
+
+    wrapper = _.text.FromStringM(steamID);
+    result = GetGroupsForSteamID(wrapper);
+    wrapper.FreeSelf();
+    return result;
+}
+
+/**
+ *  Returns names of all groups available for the user with an ID given by `id`.
+ *
+ *      In case this feature is configured to load user groups from a database
+ *  (either local or remote), the returned value is a locally cached one.
+ *  This helps us avoid having to query database each time we want to check
+ *  something about user groups, but it also means we might have an outdated
+ *  information.
+ *
+ *  @see `GetGroupsForSteamID()` / `GetGroupsForUser()`.
+ *
+ *  @param  id  ID of the user.
+ *  @return Array with names of the groups of the specified user.
+ *      All array elements are guaranteed to be not-`none`, unique and in
+ *      lower case.
+ *      If data wasn't yet loaded - returns empty array.
+ */
+public final function array<Text> GetGroupsForUserID(UserID id)
 {
-    return GetLocalGroupsForUser(user);
+    local Text          steamID;
+    local array<Text>   result;
+
+    if (id == none)                     return result;
+    steamID = id.GetSteamID64String();
+    if (steamID == none)                return result;
+
+    result = GetGroupsForSteamID(steamID);
+    steamID.FreeSelf();
+    return result;
 }
 
-private final function array<Text> GetLocalGroupsForUser(User user)
+/**
+ *  Returns names of all groups available for the user given by `user`.
+ *
+ *      In case this feature is configured to load user groups from a database
+ *  (either local or remote), the returned value is a locally cached one.
+ *  This helps us avoid having to query database each time we want to check
+ *  something about user groups, but it also means we might have an outdated
+ *  information.
+ *
+ *  @see `GetGroupsForSteamID()` / `GetGroupsForUserID()`.
+ *
+ *  @param  user    Reference to `User` object that represent the user we are to
+ *      find groups for.
+ *  @return Array with names of the groups of the specified user.
+ *      All array elements are guaranteed to be not-`none`, unique and in
+ *      lower case.
+ *      If data wasn't yet loaded - returns empty array.
+ */
+public final function array<Text> GetGroupsForUser(User user)
 {
     local UserID        id;
     local array<Text>   result;
@@ -201,22 +296,32 @@ private final function array<Text> GetLocalGroupsForUser(User user)
         return result;
     }
     id = user.GetID();
-    result = GetLocalGroupsForUserID(id);
+    result = GetGroupsForUserID(id);
     _.memory.Free(id);
     return result;
 }
 
-public final function array<UserID> GetUserIDsInGroup(Text groupName)
+/**
-{
+ *  Returns `UserID`s of all users that belong into the group named `groupName`.
-    return GetUserIDsInLocalGroup(groupName);
+ *
-}
+ *      In case this feature is configured to load user groups from a database
-
+ *  (either local or remote), the returned value is a locally cached one.
-private final function array<UserID> GetUserIDsInLocalGroup(Text groupName)
+ *  This helps us avoid having to query database each time we want to check
+ *  something about user groups, but it also means we might have an outdated
+ *  information.
+ *
+ *  @param  groupName   Name of the group. Case-insensitive.
+ *  @return Array with `UserID`s for every user in the user group named
+ *      `groupName`. All array elements are guaranteed to be not-`none` and
+ *      correspond to unique players.
+ *      If data wasn't yet loaded - returns empty array.
+ */
+public final function array<UserID> GetGroupMembers(Text groupName)
 {
     local int           i;
     local Text          lowerCaseGroupName;
     local HashTable     groupUsers;
-    local array<Text>   groupUserNames;
+    local array<Text>   groupUsersNames;
     local UserID        nextUserID;
     local array<UserID> result;
 
@@ -227,13 +332,13 @@ private final function array<UserID> GetUserIDsInLocalGroup(Text groupName)
     groupUsers = loadedGroupToUsersMap.GetHashTable(lowerCaseGroupName);
     lowerCaseGroupName.FreeSelf();
     if (groupUsers == none) {
-        groupUserNames = groupUsers.GetTextKeys();
+        groupUsersNames = groupUsers.GetTextKeys();
     }
     _.memory.Free(groupUsers);
-    for (i = 0; i < groupUserNames.length; i += 1)
+    for (i = 0; i < groupUsersNames.length; i += 1)
     {
         nextUserID = UserID(_.memory.Allocate(class'UserID'));
-        nextUserID.Initialize(groupUserNames[i]);
+        nextUserID.Initialize(groupUsersNames[i]);
         if (nextUserID.IsInitialized()) {
             result[result.length] = nextUserID;
         }
@@ -241,10 +346,95 @@ private final function array<UserID> GetUserIDsInLocalGroup(Text groupName)
             nextUserID.FreeSelf();
         }
     }
-    _.memory.FreeMany(groupUserNames);
+    _.memory.FreeMany(groupUsersNames);
+    return result;
+}
+
+/**
+ *  Checks whether user with an ID given by `id` belongs to the group named
+ *  `groupName`.
+ *
+ *      In case this feature is configured to load user groups from a database
+ *  (either local or remote), the returned value is a locally cached one.
+ *  This helps us avoid having to query database each time we want to check
+ *  something about user groups, but it also means we might have an outdated
+ *  information.
+ *
+ *  @param  id          ID of the user.
+ *  @param  groupName   Name of the group. Case-insensitive.
+ *  @return `true` if user with an ID given by `id` belongs to the group named
+ *      `groupName` and false if: it does not, either of the parameters is
+ *      invalid or group data wasn't yet properly loaded.
+ */
+public final function bool IsUserIDInGroup(UserID id, Text groupName)
+{
+    local bool      result;
+    local Text      steamID;
+    local Text      lowerGroupName;
+    local HashTable nextGroupUsers;
+
+    if (loadedGroupToUsersMap == none)  return false;
+    if (groupName == none)              return false;
+    if (id == none)                     return false;
+    steamID = id.GetSteamID64String();
+    if (steamID == none)                return false;
+
+    lowerGroupName = groupName.LowerCopy();
+    nextGroupUsers = loadedGroupToUsersMap.GetHashTable(lowerGroupName);
+    lowerGroupName.FreeSelf();
+    if (nextGroupUsers != none) {
+        result = nextGroupUsers.HasKey(steamID);
+    }
+    _.memory.Free(nextGroupUsers);
+    steamID.FreeSelf();
+    return result;
+}
+
+/**
+ *  Checks whether user given by `user` belongs to the group named `groupName`.
+ *
+ *      In case this feature is configured to load user groups from a database
+ *  (either local or remote), the returned value is a locally cached one.
+ *  This helps us avoid having to query database each time we want to check
+ *  something about user groups, but it also means we might have an outdated
+ *  information.
+ *
+ *  @param  user    Reference to `User` object that represent the user we are to
+ *      check for belonging to the group.
+ *  @param  groupName   Name of the group. Case-insensitive.
+ *  @return `true` if user with an ID given by `id` belongs to the group named
+ *      `groupName` and false if: it does not, either of the parameters is
+ *      invalid or group data wasn't yet properly loaded.
+ */
+public final function bool IsUserInGroup(User user, Text groupName)
+{
+    local UserID    id;
+    local bool      result;
+
+    if (user == none) {
+        return false;
+    }
+    id = user.GetID();
+    result = IsUserIDInGroup(id, groupName);
+    _.memory.Free(id);
     return result;
 }
 
+/**
+ *  Checks whether user groups' data was already loaded from the source
+ *  (either config file or local/remote database).
+ *
+ *  Data loaded once is cached and this method returning `true` does not
+ *  guarantee that is isn't outdated. Additional, asynchronous queries must be
+ *  made to check for that.
+ *
+ *  @return `true` if user groups' data was loaded and `false` otherwise.
+ */
+public final function bool IsUserGroupDataLoaded()
+{
+    return true;
+}
+
 defaultproperties
 {
     configClass = class'Users'