diff --git a/src/app.ts b/src/app.ts
index 98964fe..d0e28dd 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -24,12 +24,39 @@ import {UploadRoute} from "./routes/UploadRoute";
 const SequelizeStore = require("connect-session-sequelize")(session.Store);
 const logger = globals.logger;
 
+/**
+ * The main entry class for each cluster worker
+ */
 class App {
+
+    /**
+     * The corresponding express application
+     */
     public app: express.Application;
+
+    /**
+     * An instance of the socket.io server for websockets
+     */
     public io: socketIo.Server;
+
+    /**
+     * An instance of the http server where the site is served
+     */
     public server: http.Server;
+
+    /**
+     * The path to the public folder that is served statically
+     */
     public readonly publicPath: string;
+
+    /**
+     * The id of the worker
+     */
     public readonly id?: number;
+
+    /**
+     * The instance of sequelize for ORM
+     */
     public readonly sequelize: Sequelize;
 
     constructor(id?: number) {
diff --git a/src/graphql/resolvers.ts b/src/graphql/resolvers.ts
index 032edb8..34a760c 100644
--- a/src/graphql/resolvers.ts
+++ b/src/graphql/resolvers.ts
@@ -10,9 +10,7 @@ import {InternalEvents} from "../lib/InternalEvents";
 import * as models from "../lib/models";
 import {is} from "../lib/regex";
 
-class Resolver {
-
-}
+// tslint:disable:completed-docs
 
 /**
  * Returns the resolvers for the graphql api.
@@ -212,7 +210,11 @@ export function resolver(req: any, res: any): any {
                 if (req.session.userId) {
                     const post = await models.Post.findByPk(postId);
                     if (post) {
-                        return await post.vote(req.session.userId, type);
+                        const voteType = await post.vote(req.session.userId, type);
+                        return {
+                            post,
+                            voteType,
+                        };
                     } else {
                         res.status(status.BAD_REQUEST);
                         return new PostNotFoundGqlError(postId);
diff --git a/src/graphql/schema.graphql b/src/graphql/schema.graphql
index b4c2162..954ca8b 100644
--- a/src/graphql/schema.graphql
+++ b/src/graphql/schema.graphql
@@ -17,14 +17,11 @@ type Query {
     "returns the request object for its id"
     getRequest(requestId: ID!): Request
 
-    "DEPRECATED! Find a user by user name or handle"
-    findUser(first: Int = 20, offset: Int = 0, name: String, handle: String): [User]
-
     "searches for users, groups, events, posts and returns a search result"
     search(query: String!, first: Int = 20, offset: Int = 0): SearchResult!
 
     "returns the post filtered by the sort type with pagination."
-    getPosts(first: Int=20, offset: Int=0, sort: SortType = NEW): [Post]
+    getPosts(first: Int=20, offset: Int=0, sort: SortType = NEW): [Post!]!
 
     "returns all activities"
     getActivities: [Activity]
@@ -38,10 +35,10 @@ type Mutation {
     acceptCookies: Boolean
 
     "Login of the user. The passwordHash should be a sha512 hash of the password."
-    login(email: String!, passwordHash: String!): Profile
+    login(email: String!, passwordHash: String!): Profile!
 
     "Registers the user."
-    register(username: String, email: String, passwordHash: String): Profile
+    register(username: String, email: String, passwordHash: String): Profile!
 
     "Sets the user settings to the specified settings string. The settings parameter should be a valid yaml."
     setUserSettings(settings: String!): String!
@@ -50,22 +47,22 @@ type Mutation {
     logout: Boolean
 
     "Upvote/downvote a Post"
-    vote(postId: ID!, type: VoteType!): VoteType
+    vote(postId: ID!, type: VoteType!): VoteResult
 
     "Report the post"
-    report(postId: ID!): Boolean
+    report(postId: ID!): Boolean!
 
    "send a request"
     sendRequest(receiver: ID!, type: RequestType): Request
 
     "lets you accept a request for a given request id"
-    acceptRequest(sender: ID!, type: RequestType): Boolean
+    acceptRequest(sender: ID!, type: RequestType): Boolean!
 
     "lets you deny a request for a given request id"
-    denyRequest(sender: ID!, type: RequestType): Boolean
+    denyRequest(sender: ID!, type: RequestType): Boolean!
 
     "removes a friend"
-    removeFriend(friendId: ID!): Boolean
+    removeFriend(friendId: ID!): Boolean!
 
     "send a message in a Chatroom"
     sendMessage(chatId: ID!, content: String!): ChatMessage
@@ -95,7 +92,7 @@ type Mutation {
     removeGroupAdmin(groupId: ID!, userId: ID!): Group
 
     "Creates a new event with a epoch due date on a group."
-    createEvent(name: String, dueDate: String, groupId: ID!): Event
+    createEvent(name: String, dueDate: String, groupId: ID!): Event!
 
     "Joins a event."
     joinEvent(eventId: ID!): Event
@@ -124,25 +121,25 @@ interface UserData {
     postCount: Int!
 
     "returns a given number of posts of a user"
-    posts(first: Int=10, offset: Int=0): [Post]
+    posts(first: Int=10, offset: Int=0): [Post!]!
 
     "creation date of the user account"
     joinedAt: String!
 
     "all friends of the user"
-    friends(first: Int=10, offset: Int=0): [User]
+    friends(first: Int=10, offset: Int=0): [User!]!
 
     "The number of friends the user has"
     friendCount: Int!
 
     "The groups the user has joined"
-    groups(first: Int=10, offset: Int=0): [Group]
+    groups(first: Int=10, offset: Int=0): [Group!]!
 
     "The number of groups the user has joined"
     groupCount: Int!
 
     "The events the user is participating in"
-    events(first: Int=10, offset: Int=0): [Event]
+    events(first: Int=10, offset: Int=0): [Event!]!
 
     "The number of events the user is participating in"
     eventCount: Int!
@@ -172,7 +169,7 @@ type User implements UserData{
     numberOfPosts: Int!
 
     "returns a given number of posts of a user"
-    posts(first: Int=10, offset: Int): [Post]
+    posts(first: Int=10, offset: Int): [Post!]!
 
     "the number of posts the user has created"
     postCount: Int!
@@ -181,7 +178,7 @@ type User implements UserData{
     joinedAt: String!
 
     "all friends of the user"
-    friends(first: Int=10, offset: Int=0): [User]
+    friends(first: Int=10, offset: Int=0): [User!]!
 
     "The number of friends the user has"
     friendCount: Int!
@@ -190,13 +187,13 @@ type User implements UserData{
     points: Int!
 
     "the groups the user has joined"
-    groups(first: Int=10, offset: Int=0): [Group]
+    groups(first: Int=10, offset: Int=0): [Group!]!
 
     "The numbef of groups the user has joined"
     groupCount: Int!
 
     "The events the user is participating in"
-    events(first: Int=10, offset: Int=0): [Event]
+    events(first: Int=10, offset: Int=0): [Event!]!
 
     "The number of events the user is participating in"
     eventCount: Int!
@@ -264,7 +261,7 @@ type Profile implements UserData {
     groupCount: Int!
 
     "The events the user is participating in"
-    events(first: Int=10, offset: Int=0): [Event]
+    events(first: Int=10, offset: Int=0): [Event!]!
 
     "The number of events the user is participating in"
     eventCount: Int!
@@ -310,7 +307,7 @@ type Post {
     userVote(userId: ID!): VoteType
 
     "if the post can be deleted by the specified user"
-    deletable(userId: ID!): Boolean
+    deletable(userId: ID!): Boolean!
 
     "the activity that belongs to the post"
     activity: Activity
@@ -338,10 +335,10 @@ type ChatRoom {
     namespace: String
 
     "the members of the chatroom"
-    members(first: Int=10, offset: Int=0): [User!]
+    members(first: Int=10, offset: Int=0): [User!]!
 
     "return a specfic range of messages posted in the chat"
-    messages(first: Int = 10, offset: Int, containing: String): [ChatMessage]!
+    messages(first: Int = 10, offset: Int): [ChatMessage!]!
 
     "id of the chat"
     id: ID!
@@ -375,22 +372,22 @@ type Group {
     name: String!
 
     "the creator of the group"
-    creator: User
+    creator: User!
 
     "all admins of the group"
-    admins(first: Int=10, offset: Int=0): [User]!
+    admins(first: Int=10, offset: Int=0): [User!]!
 
     "the members of the group with pagination"
-    members(first: Int = 10, offset: Int = 0): [User]!
+    members(first: Int = 10, offset: Int = 0): [User!]!
 
     "the groups chat"
-    chat: ChatRoom
+    chat: ChatRoom!
 
     "the events of the group"
     events(first: Int=10, offset: Int=0): [Event!]!
 
     "If the user with the specified id has joined the group"
-    joined(userId: Int!): Boolean
+    joined(userId: Int!): Boolean!
 }
 
 type Event {
@@ -437,6 +434,16 @@ type SearchResult {
     events: [Event!]!
 }
 
+"The result of voting on a post"
+type VoteResult {
+
+    "The type of vote that was performed"
+    voteType: VoteType
+
+    "The post the vote was performed on"
+    post: Post!
+}
+
 "An activity that grants points"
 type Activity {
 
diff --git a/src/index.ts b/src/index.ts
index 119f82c..5099ca5 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -3,17 +3,6 @@ import * as cluster from "cluster";
 import App from "./app";
 const numCPUs = require("os").cpus().length;
 
-interface IResourceUsage {
-    mem: {rss: number, heapTotal: number, heapUsed: number, external: number};
-    cpu: {user: number, system: number};
-}
-
-interface IClusterData {
-    reqCount: number;
-    workerCount: () => number;
-    workerRes: {[key: string]: IResourceUsage};
-}
-
 if (cluster.isMaster) {
     console.log(`[CLUSTER-M] Master ${process.pid} is running`);
 
diff --git a/src/lib/Route.ts b/src/lib/Route.ts
index b0ad0ef..a3e1a1e 100644
--- a/src/lib/Route.ts
+++ b/src/lib/Route.ts
@@ -8,12 +8,31 @@ import {Namespace, Server} from "socket.io";
  */
 abstract class Route {
 
+    /**
+     * The express router belonging to the route
+     */
     public router?: Router;
+
+    /**
+     * An instance of socket io for the route
+     */
     protected io?: Server;
+
+    /**
+     * The namespace of the websocket for the route
+     */
     protected ions?: Namespace;
 
+    /**
+     * An asynchronous init function
+     * @param params
+     */
     public abstract async init(...params: any): Promise<any>;
 
+    /**
+     * An asynchronous destroy function
+     * @param params
+     */
     public abstract async destroy(...params: any): Promise<any>;
 }
 
diff --git a/src/lib/dataAccess.ts b/src/lib/dataAccess.ts
index 48c0f60..6dcf7e9 100644
--- a/src/lib/dataAccess.ts
+++ b/src/lib/dataAccess.ts
@@ -17,6 +17,8 @@ import {InternalEvents} from "./InternalEvents";
 import {Activity} from "./models";
 import * as models from "./models";
 
+// tslint:disable:completed-docs
+
 /**
  * Generates a new handle from the username and a base64 string of the current time.
  * @param username
@@ -39,7 +41,8 @@ namespace dataaccess {
     let sequelize: Sequelize;
 
     /**
-     * Initializes everything that needs to be initialized asynchronous.
+     * An asynchronous init method for sequelize
+     * @param seq
      */
     export async function init(seq: Sequelize): Promise<void> {
         sequelize = seq;
diff --git a/src/lib/errors/ActivityNotFoundError.ts b/src/lib/errors/ActivityNotFoundError.ts
index 839afa6..fb0f5c9 100644
--- a/src/lib/errors/ActivityNotFoundError.ts
+++ b/src/lib/errors/ActivityNotFoundError.ts
@@ -1,5 +1,8 @@
 import {BaseError} from "./BaseError";
 
+/**
+ * An error that is thrown when an activity was not found.
+ */
 export class ActivityNotFoundError extends BaseError {
     constructor(id: number) {
         super(`The activity with the id ${id} could not be found.`);
diff --git a/src/lib/errors/BaseError.ts b/src/lib/errors/BaseError.ts
index 310fdd3..b4ad153 100644
--- a/src/lib/errors/BaseError.ts
+++ b/src/lib/errors/BaseError.ts
@@ -4,6 +4,9 @@ import {GraphQLError} from "graphql";
  * Base error class.
  */
 export class BaseError extends Error {
+    /**
+     * The graphql error with a frontend error message
+     */
     public readonly graphqlError: GraphQLError;
 
     constructor(message?: string, friendlyMessage?: string) {
diff --git a/src/lib/errors/ChatNotFoundError.ts b/src/lib/errors/ChatNotFoundError.ts
index d38e709..17042dc 100644
--- a/src/lib/errors/ChatNotFoundError.ts
+++ b/src/lib/errors/ChatNotFoundError.ts
@@ -1,5 +1,8 @@
 import {BaseError} from "./BaseError";
 
+/**
+ * An error that is thrown when the chatroom doesn't exist
+ */
 export class ChatNotFoundError extends BaseError {
     constructor(chatId: number) {
         super(`Chat with id ${chatId} not found.`);
diff --git a/src/lib/errors/DuplicatedRequestError.ts b/src/lib/errors/DuplicatedRequestError.ts
index 404b3c0..20b6ae5 100644
--- a/src/lib/errors/DuplicatedRequestError.ts
+++ b/src/lib/errors/DuplicatedRequestError.ts
@@ -1,5 +1,8 @@
 import {BaseError} from "./BaseError";
 
+/**
+ * An error that is thrown when a request of a specific type already exists
+ */
 export class DuplicatedRequestError extends BaseError {
     constructor() {
         super(`Request already exists.`);
diff --git a/src/lib/errors/EmailAlreadyRegisteredError.ts b/src/lib/errors/EmailAlreadyRegisteredError.ts
index 7551f02..e13d89a 100644
--- a/src/lib/errors/EmailAlreadyRegisteredError.ts
+++ b/src/lib/errors/EmailAlreadyRegisteredError.ts
@@ -1,5 +1,8 @@
 import {BaseError} from "./BaseError";
 
+/**
+ * An error that is thrown when the provided email for registering is already registered with a user
+ */
 export class EmailAlreadyRegisteredError extends BaseError {
     constructor(email: string) {
         super(`A user for '${email}' does already exist.`);
diff --git a/src/lib/errors/GroupAlreadyExistsError.ts b/src/lib/errors/GroupAlreadyExistsError.ts
index 02dffe2..57a2313 100644
--- a/src/lib/errors/GroupAlreadyExistsError.ts
+++ b/src/lib/errors/GroupAlreadyExistsError.ts
@@ -1,5 +1,8 @@
 import {BaseError} from "./BaseError";
 
+/**
+ * An error that is thrown when a group already exists on creation request
+ */
 export class GroupAlreadyExistsError extends BaseError {
     constructor(name: string) {
         super(`A group with the name "${name}" already exists.`);
diff --git a/src/lib/errors/GroupNotFoundError.ts b/src/lib/errors/GroupNotFoundError.ts
index 5010d4e..f63e119 100644
--- a/src/lib/errors/GroupNotFoundError.ts
+++ b/src/lib/errors/GroupNotFoundError.ts
@@ -1,8 +1,10 @@
 import {BaseError} from "./BaseError";
 
+/**
+ * An error that is thrown when a group was not found for a specified id
+ */
 export class GroupNotFoundError extends BaseError {
     constructor(groupId: number) {
         super(`Group ${groupId} not found!`);
     }
-
 }
diff --git a/src/lib/errors/InvalidLoginError.ts b/src/lib/errors/InvalidLoginError.ts
index 54e6227..c6651d0 100644
--- a/src/lib/errors/InvalidLoginError.ts
+++ b/src/lib/errors/InvalidLoginError.ts
@@ -1,5 +1,8 @@
 import {BaseError} from "./BaseError";
 
+/**
+ * An error that is thrown when a user provides invalid login data for a login request
+ */
 export class InvalidLoginError extends BaseError {
     constructor(email: (string)) {
         super(`Invalid login data for ${email}.`);
diff --git a/src/lib/errors/NoActionSpecifiedError.ts b/src/lib/errors/NoActionSpecifiedError.ts
index 3ee3eb4..f18fed4 100644
--- a/src/lib/errors/NoActionSpecifiedError.ts
+++ b/src/lib/errors/NoActionSpecifiedError.ts
@@ -1,5 +1,8 @@
 import {BaseError} from "./BaseError";
 
+/**
+ * An error that is thrown when no action was specified on a group membership change
+ */
 export class NoActionSpecifiedError extends BaseError {
     constructor(actions?: any) {
         if (actions) {
diff --git a/src/lib/errors/RequestNotFoundError.ts b/src/lib/errors/RequestNotFoundError.ts
index 112dd8f..cd94fc5 100644
--- a/src/lib/errors/RequestNotFoundError.ts
+++ b/src/lib/errors/RequestNotFoundError.ts
@@ -1,9 +1,11 @@
 import dataaccess from "../dataAccess";
 import {BaseError} from "./BaseError";
 
+/**
+ * An error that is thrown when a request for a sender, receiver and type was not found
+ */
 export class RequestNotFoundError extends BaseError {
     constructor(sender: number, receiver: number, type: dataaccess.RequestType) {
         super(`Request with sender '${sender}' and receiver '${receiver}' of type '${type}' not found.`);
     }
-
 }
diff --git a/src/lib/errors/UserNotFoundError.ts b/src/lib/errors/UserNotFoundError.ts
index ccddc54..69724c0 100644
--- a/src/lib/errors/UserNotFoundError.ts
+++ b/src/lib/errors/UserNotFoundError.ts
@@ -1,5 +1,8 @@
 import {BaseError} from "./BaseError";
 
+/**
+ * An error that is thrown when a specified user was not found
+ */
 export class UserNotFoundError extends BaseError {
     constructor(username: (string|number)) {
         super(`User ${username} not found!`);
diff --git a/src/lib/errors/graphqlErrors.ts b/src/lib/errors/graphqlErrors.ts
index 7098aee..c336ae0 100644
--- a/src/lib/errors/graphqlErrors.ts
+++ b/src/lib/errors/graphqlErrors.ts
@@ -1,17 +1,26 @@
 import {GraphQLError} from "graphql";
 
+/**
+ * An error for the frontend that is thrown when the user is not logged in
+ */
 export class NotLoggedInGqlError extends GraphQLError {
     constructor() {
         super("Not logged in");
     }
 }
 
+/**
+ * An error for the frontend that is thrown when a post was not found
+ */
 export class PostNotFoundGqlError extends GraphQLError {
     constructor(postId: number) {
         super(`Post '${postId}' not found!`);
     }
 }
 
+/**
+ * An error for the forntend that is thrown when a group was not found
+ */
 export class GroupNotFoundGqlError extends GraphQLError {
     constructor(groupId: number) {
         super(`Group '${groupId}' not found!`);
diff --git a/src/lib/models/Activity.ts b/src/lib/models/Activity.ts
index 8b56ad2..448ffec 100644
--- a/src/lib/models/Activity.ts
+++ b/src/lib/models/Activity.ts
@@ -1,18 +1,30 @@
 import * as sqz from "sequelize";
-import {Column, ForeignKey, Model, NotNull, Table, Unique} from "sequelize-typescript";
+import {Column, Model, NotNull, Table, Unique} from "sequelize-typescript";
 
+/**
+ * Represents an environmental friendly activity that provides points to level up
+ */
 @Table({underscored: true})
 export class Activity extends Model {
 
+    /**
+     * The name of the Activity
+     */
     @Unique
     @NotNull
     @Column({type: sqz.STRING(128), allowNull: false, unique: true})
     public name: string;
 
+    /**
+     * The description of the activity to describe what exactly has to be done
+     */
     @NotNull
     @Column({type: sqz.TEXT, allowNull: false})
     public description: string;
 
+    /**
+     * The points one can get by completing the activity
+     */
     @Column
     public points: number;
 }
diff --git a/src/lib/models/ChatMember.ts b/src/lib/models/ChatMember.ts
index 1caf9ec..029749a 100644
--- a/src/lib/models/ChatMember.ts
+++ b/src/lib/models/ChatMember.ts
@@ -2,13 +2,22 @@ import {Column, ForeignKey, Model, NotNull, Table} from "sequelize-typescript";
 import {ChatRoom} from "./ChatRoom";
 import {User} from "./User";
 
+/**
+ * Represents a member of a chat
+ */
 @Table({underscored: true})
 export class ChatMember extends Model<ChatMember> {
+    /**
+     * The id of the user
+     */
     @ForeignKey(() => User)
     @NotNull
     @Column({allowNull: false})
     public userId: number;
 
+    /**
+     * The id of the chatroom
+     */
     @ForeignKey(() => ChatRoom)
     @NotNull
     @Column({allowNull: false})
diff --git a/src/lib/models/ChatMessage.ts b/src/lib/models/ChatMessage.ts
index 520b63b..b47217b 100644
--- a/src/lib/models/ChatMessage.ts
+++ b/src/lib/models/ChatMessage.ts
@@ -4,40 +4,71 @@ import markdown from "../markdown";
 import {ChatRoom} from "./ChatRoom";
 import {User} from "./User";
 
+/**
+ * A single chat message in a chatroom
+ */
 @Table({underscored: true})
 export class ChatMessage extends Model<ChatMessage> {
 
+    /**
+     * The content of a message in markdown utf-8 format
+     */
     @NotNull
     @Column({type: sqz.STRING(512), allowNull: false})
     public content: string;
 
+    /**
+     * The id of the chatroom the message was sent in
+     */
     @ForeignKey(() => ChatRoom)
     @NotNull
     @Column({allowNull: false})
     public chatId: number;
 
+    /**
+     * The id of the author of the message
+     */
     @ForeignKey(() => User)
     @NotNull
     @Column({allowNull: false})
     public authorId: number;
 
+    /**
+     * The chatroom the message belongs to
+     */
     @BelongsTo(() => ChatRoom, "chatId")
     public rChat: ChatRoom;
 
+    /**
+     * The author the message belongs to
+     */
     @BelongsTo(() => User, "authorId")
     public rAuthor: User;
 
+    /**
+     * The date when the message was created
+     */
     @CreatedAt
     public createdAt: Date;
 
+    /**
+     * Returns the chatroom of the message
+     */
     public async chat(): Promise<ChatRoom> {
         return await this.$get("rChat") as ChatRoom;
     }
 
+    /**
+     * Returns the author of the message
+     */
     public async author(): Promise<User> {
         return await this.$get("rAuthor") as User;
     }
 
+    /**
+     * Returns the rendered html content of the message.
+     * Rendered by markdown.it
+     */
     public get htmlContent(): string {
         return markdown.renderInline(this.getDataValue("content"));
     }
diff --git a/src/lib/models/ChatRoom.ts b/src/lib/models/ChatRoom.ts
index 3f4fe30..f521387 100644
--- a/src/lib/models/ChatRoom.ts
+++ b/src/lib/models/ChatRoom.ts
@@ -3,25 +3,49 @@ import {ChatMember} from "./ChatMember";
 import {ChatMessage} from "./ChatMessage";
 import {User} from "./User";
 
+/**
+ * The chatroom model
+ */
 @Table({underscored: true})
 export class ChatRoom extends Model<ChatRoom> {
+
+    /**
+     * The members of the chatroom
+     */
     @BelongsToMany(() => User, () => ChatMember)
     public rMembers: User[];
 
+    /**
+     * The messages in the chatroom
+     */
     @HasMany(() => ChatMessage, "chatId")
     public rMessages: ChatMessage[];
 
+    /**
+     * The date the chatroom was created at
+     */
     @CreatedAt
     public readonly createdAt!: Date;
 
+    /**
+     * Returns the members of the chatroom
+     */
     public async members(): Promise<User[]> {
         return await this.$get("rMembers") as User[];
     }
 
-    public async messages(): Promise<ChatMessage[]> {
-        return await this.$get("rMessages") as ChatMessage[];
+    /**
+     * Returns the messages that have been sent in the chatroom
+     */
+    public async messages({first, offset}: {first: number, offset: number}): Promise<ChatMessage[]> {
+        const limit = first ?? 10;
+        offset = offset ?? 0;
+        return await this.$get("rMessages", {limit, offset}) as ChatMessage[];
     }
 
+    /**
+     * Returns the namespace of the websocket of the chatroom
+     */
     public get namespace(): string {
         return "/chats/" + this.getDataValue("id");
     }
diff --git a/src/lib/models/Event.ts b/src/lib/models/Event.ts
index 37858c8..cd98388 100644
--- a/src/lib/models/Event.ts
+++ b/src/lib/models/Event.ts
@@ -3,24 +3,43 @@ import {EventParticipant} from "./EventParticipant";
 import {Group} from "./Group";
 import {User} from "./User";
 
+/**
+ * Represents an event
+ */
 @Table({underscored: true})
 export class Event extends Model<Event> {
+
+    /**
+     * The name of the event
+     */
     @NotNull
     @Column({allowNull: false})
     public name: string;
 
+    /**
+     * The date the event takes place
+     */
     @NotNull
     @Column({allowNull: false})
     public dueDate: Date;
 
+    /**
+     * The group id the event belongs to
+     */
     @NotNull
     @ForeignKey(() => Group)
     @Column({allowNull: false})
     public groupId: number;
 
+    /**
+     * The group the event belongs to
+     */
     @BelongsTo(() => Group, "groupId")
     public rGroup: Group;
 
+    /**
+     * The participants in the event
+     */
     @BelongsToMany(() => User, () => EventParticipant)
     public rParticipants: User[];
 
diff --git a/src/lib/models/EventParticipant.ts b/src/lib/models/EventParticipant.ts
index 8c7daa5..cff5037 100644
--- a/src/lib/models/EventParticipant.ts
+++ b/src/lib/models/EventParticipant.ts
@@ -1,14 +1,24 @@
-import {BelongsTo, BelongsToMany, Column, ForeignKey, Model, NotNull, Table} from "sequelize-typescript";
+import {Column, ForeignKey, Model, NotNull, Table} from "sequelize-typescript";
 import {Event} from "./Event";
 import {User} from "./User";
 
+/**
+ * A single participant in an event
+ */
 @Table({underscored: true})
 export class EventParticipant extends Model<EventParticipant> {
+
+    /**
+     * The id of the participating user
+     */
     @NotNull
     @ForeignKey(() => User)
     @Column({allowNull: false})
     public userId: number;
 
+    /**
+     * The id of the event
+     */
     @NotNull
     @ForeignKey(() => Event)
     @Column({allowNull: false})
diff --git a/src/lib/models/Friendship.ts b/src/lib/models/Friendship.ts
index b28d4f4..d767748 100644
--- a/src/lib/models/Friendship.ts
+++ b/src/lib/models/Friendship.ts
@@ -1,15 +1,24 @@
 import {Column, ForeignKey, Model, NotNull, PrimaryKey, Table} from "sequelize-typescript";
 import {User} from "./User";
 
+/**
+ * A friendship between two users
+ */
 @Table({underscored: true})
 export class Friendship extends Model<Friendship> {
 
+    /**
+     * The id of the first user
+     */
     @ForeignKey(() => User)
     @PrimaryKey
     @NotNull
     @Column({allowNull: false})
     public userId: number;
 
+    /**
+     * The id of the second user
+     */
     @ForeignKey(() => User)
     @PrimaryKey
     @NotNull
diff --git a/src/lib/models/Group.ts b/src/lib/models/Group.ts
index 8b3fd7f..2b6b282 100644
--- a/src/lib/models/Group.ts
+++ b/src/lib/models/Group.ts
@@ -15,35 +15,63 @@ import {GroupAdmin} from "./GroupAdmin";
 import {GroupMember} from "./GroupMember";
 import {User} from "./User";
 
+/**
+ * A single group with members
+ */
 @Table({underscored: true})
 export class Group extends Model<Group> {
+
+    /**
+     * The name of the group
+     */
     @NotNull
     @Unique
     @Column({allowNull: false, unique: true})
     public name: string;
 
+    /**
+     * The id of the user who created the group
+     */
     @NotNull
     @ForeignKey(() => User)
     @Column({allowNull: false})
     public creatorId: number;
 
+    /**
+     * The id of the chat that belongs to the group
+     */
     @NotNull
     @ForeignKey(() => ChatRoom)
     @Column({allowNull: false})
     public chatId: number;
 
+    /**
+     * The creator of the group
+     */
     @BelongsTo(() => User, "creatorId")
     public rCreator: User;
 
+    /**
+     * The admins of the group
+     */
     @BelongsToMany(() => User, () => GroupAdmin)
     public rAdmins: User[];
 
+    /**
+     * The members of the group
+     */
     @BelongsToMany(() => User, () => GroupMember)
     public rMembers: User[];
 
+    /**
+     * The chatroom of the group
+     */
     @BelongsTo(() => ChatRoom)
     public rChat: ChatRoom;
 
+    /**
+     * The events that were created for the group
+     */
     @HasMany(() => Event, "groupId")
     public rEvents: Event[];
 
diff --git a/src/lib/models/GroupAdmin.ts b/src/lib/models/GroupAdmin.ts
index 9c48167..7d65f7e 100644
--- a/src/lib/models/GroupAdmin.ts
+++ b/src/lib/models/GroupAdmin.ts
@@ -2,13 +2,23 @@ import {Column, ForeignKey, Model, NotNull, Table} from "sequelize-typescript";
 import {Group} from "./Group";
 import {User} from "./User";
 
+/**
+ * A single admin of a group
+ */
 @Table({underscored: true})
 export class GroupAdmin extends Model<GroupAdmin> {
+
+    /**
+     * The id of the user
+     */
     @NotNull
     @ForeignKey(() => User)
     @Column({allowNull: false})
     public userId: number;
 
+    /**
+     * The id of the group
+     */
     @NotNull
     @ForeignKey(() => Group)
     @Column({allowNull: false})
diff --git a/src/lib/models/GroupMember.ts b/src/lib/models/GroupMember.ts
index 3334348..4e30b75 100644
--- a/src/lib/models/GroupMember.ts
+++ b/src/lib/models/GroupMember.ts
@@ -2,13 +2,23 @@ import {Column, ForeignKey, Model, NotNull, Table} from "sequelize-typescript";
 import {Group} from "./Group";
 import {User} from "./User";
 
+/**
+ * A single member of a group
+ */
 @Table({underscored: true})
 export class GroupMember extends Model<GroupMember> {
+
+    /**
+     * The id of the user
+     */
     @NotNull
     @ForeignKey(() => User)
     @Column({allowNull: false})
     public userId: number;
 
+    /**
+     * The id of the group
+     */
     @NotNull
     @ForeignKey(() => Group)
     @Column({allowNull: false})
diff --git a/src/lib/models/Post.ts b/src/lib/models/Post.ts
index 39f2ebc..ed41e56 100644
--- a/src/lib/models/Post.ts
+++ b/src/lib/models/Post.ts
@@ -5,30 +5,56 @@ import {Activity} from "./Activity";
 import {PostVote, VoteType} from "./PostVote";
 import {User} from "./User";
 
+/**
+ * A single post of a user
+ */
 @Table({underscored: true})
 export class Post extends Model<Post> {
+
+    /**
+     * The markdown formatted utf-8 content of the post
+     */
     @NotNull
     @Column({type: sqz.STRING(2048), allowNull: false})
     public content: string;
 
+    /**
+     * The id of the post author
+     */
     @ForeignKey(() => User)
     @NotNull
     @Column({allowNull: false})
     public authorId: number;
 
+    /**
+     * The id of the activiy of the post if one was provided during creation
+     */
     @ForeignKey(() => Activity)
     @Column({allowNull: true})
     public activityId: number;
 
+    /**
+     * The author of the post
+     */
     @BelongsTo(() => User, "authorId")
     public rAuthor: User;
 
+    /**
+     * The activiy of the post
+     */
     @BelongsTo(() => Activity, "activityId")
     public rActivity?: Activity;
 
+    /**
+     * The votes that were performed on the post
+     */
     @BelongsToMany(() => User, () => PostVote)
+    // tslint:disable-next-line:completed-docs
     public rVotes: Array<User & {PostVote: PostVote}>;
 
+    /**
+     * The date the post was created at
+     */
     @CreatedAt
     public readonly createdAt!: Date;
 
diff --git a/src/lib/models/PostVote.ts b/src/lib/models/PostVote.ts
index 1b2d019..4c4c789 100644
--- a/src/lib/models/PostVote.ts
+++ b/src/lib/models/PostVote.ts
@@ -3,22 +3,38 @@ import {Column, ForeignKey, Model, NotNull, Table} from "sequelize-typescript";
 import {Post} from "./Post";
 import {User} from "./User";
 
+/**
+ * An enum that represents all possible types of votes
+ */
 export enum VoteType {
     UPVOTE = "UPVOTE",
     DOWNVOTE = "DOWNVOTE",
 }
 
+/**
+ * A single vote on a post
+ */
 @Table({underscored: true})
 export class PostVote extends Model<PostVote> {
+
+    /**
+     * The type of vote (UPVOTE/DOWNVOTE)
+     */
     @NotNull
     @Column({type: sqz.ENUM, values: ["UPVOTE", "DOWNVOTE"], defaultValue: "UPVOTE", allowNull: false})
     public voteType: VoteType;
 
+    /**
+     * The id of the user that performed the vote
+     */
     @ForeignKey(() => User)
     @NotNull
     @Column({allowNull: false})
     public userId: number;
 
+    /**
+     * The id of the post the vote was performed on
+     */
     @ForeignKey(() => Post)
     @NotNull
     @Column({allowNull: false})
diff --git a/src/lib/models/Request.ts b/src/lib/models/Request.ts
index c1faf8d..3e0722d 100644
--- a/src/lib/models/Request.ts
+++ b/src/lib/models/Request.ts
@@ -2,14 +2,24 @@ import * as sqz from "sequelize";
 import {BelongsTo, Column, ForeignKey, Model, NotNull, Table} from "sequelize-typescript";
 import {User} from "./User";
 
+/**
+ * An enum that represents all possible types of requests
+ */
 export enum RequestType {
     FRIENDREQUEST = "FRIENDREQUEST",
     GROUPINVITE = "GROUPINVITE",
     EVENTINVITE = "EVENTINVITE",
 }
 
+/**
+ * A single request for a friendship, group invide, event invite
+ */
 @Table({underscored: true})
 export class Request extends Model<Request> {
+
+    /**
+     * The type of the request
+     */
     @NotNull
     @Column({
         allowNull: false,
@@ -19,19 +29,31 @@ export class Request extends Model<Request> {
     })
     public requestType: RequestType;
 
+    /**
+     * The id of the user who sent the request
+     */
     @ForeignKey(() => User)
     @NotNull
     @Column({allowNull: false})
     public senderId: number;
 
+    /**
+     * The user who sent the request
+     */
     @BelongsTo(() => User, "senderId")
     public rSender: User;
 
+    /**
+     * The id of the user who received the request
+     */
     @ForeignKey(() => User)
     @NotNull
     @Column({allowNull: false})
     public receiverId: number;
 
+    /**
+     * The user who received the request
+     */
     @BelongsTo(() => User, "receiverId")
     public rReceiver: User;
 
diff --git a/src/lib/models/User.ts b/src/lib/models/User.ts
index 3ec3dc1..963fabb 100644
--- a/src/lib/models/User.ts
+++ b/src/lib/models/User.ts
@@ -26,87 +26,163 @@ import {Post} from "./Post";
 import {PostVote} from "./PostVote";
 import {Request, RequestType} from "./Request";
 
+/**
+ * A single user
+ */
 @Table({underscored: true})
 export class User extends Model<User> {
+
+    /**
+     * The name of the user
+     */
     @NotNull
     @Column({type: sqz.STRING(128), allowNull: false})
     public username: string;
 
+    /**
+     * The handle of the user
+     */
     @NotNull
     @Unique
     @Column({type: sqz.STRING(128), allowNull: false, unique: true})
     public handle: string;
 
+    /**
+     * The email address of the user
+     */
     @Unique
     @NotNull
     @Column({type: sqz.STRING(128), allowNull: false, unique: true})
     public email: string;
 
+    /**
+     * The password hash of the user
+     */
     @NotNull
     @Column({type: sqz.STRING(128), allowNull: false})
     public password: string;
 
+    /**
+     * The ranking points of the user
+     */
     @NotNull
     @Column({defaultValue: 0, allowNull: false})
     public rankpoints: number;
 
+    /**
+     * The JSON-Frontend settings of the user to provide a way to store custom settings in the backend
+     */
     @NotNull
     @Column({defaultValue: {}, allowNull: false, type: sqz.JSON})
     public frontendSettings: any;
 
+    /**
+     * The auth token for bearer authentication
+     */
     @Unique
     @Column({defaultValue: uuidv4, unique: true})
     public authToken: string;
 
+    /**
+     * The date and time the auth token expires
+     */
     @Column({defaultValue: () => Date.now() + 7200000})
     public authExpire: Date;
 
+    /**
+     * A flag if the user is a site admin
+     */
     @NotNull
     @Column({defaultValue: false, allowNull: false})
     public isAdmin: boolean;
 
+    /**
+     * The url of the users profile picture
+     */
     @Column({type: sqz.STRING(512)})
     public profilePicture: string;
 
+    /**
+     * The friends of the user
+     */
     @BelongsToMany(() => User, () => Friendship, "userId")
     public rFriends: User[];
 
+    /**
+     * The friends of the user
+     */
     @BelongsToMany(() => User, () => Friendship, "friendId")
     public rFriendOf: User[];
 
+    /**
+     * The votes the user performed
+     */
     @BelongsToMany(() => Post, () => PostVote)
     public votes: Array<Post & { PostVote: PostVote }>;
 
+    /**
+     * The chatrooms the user has joined
+     */
     @BelongsToMany(() => ChatRoom, () => ChatMember)
     public rChats: ChatRoom[];
 
+    /**
+     * The group the user is an admin in
+     */
     @BelongsToMany(() => Group, () => GroupAdmin)
     public rAdministratedGroups: Group[];
 
+    /**
+     * The events the user has joined
+     */
     @BelongsToMany(() => Event, () => EventParticipant)
     public rEvents: Event[];
 
+    /**
+     * The groups the user has joined
+     */
     @BelongsToMany(() => Group, () => GroupMember)
     public rGroups: Group[];
 
+    /**
+     * The posts the user has created
+     */
     @HasMany(() => Post, "authorId")
     public rPosts: Post[];
 
+    /**
+     * The requests the user has sent
+     */
     @HasMany(() => Request, "senderId")
     public rSentRequests: Request[];
 
+    /**
+     * The requests the user has received
+     */
     @HasMany(() => Request, "receiverId")
     public rReceivedRequests: Request[];
 
+    /**
+     * The messages the user has sent in a chatroom
+     */
     @HasMany(() => ChatMessage, "authorId")
     public messages: ChatMessage[];
 
+    /**
+     * The groups the user has created
+     */
     @HasMany(() => Group, "creatorId")
     public rCreatedGroups: Group[];
 
+    /**
+     * The date the account was created
+     */
     @CreatedAt
     public readonly createdAt!: Date;
 
+    /**
+     * The date of the last change to the user
+     */
     @UpdatedAt
     public readonly updatedAt!: Date;
 
diff --git a/src/routes/UploadRoute.ts b/src/routes/UploadRoute.ts
index 1ecb516..6f526b0 100644
--- a/src/routes/UploadRoute.ts
+++ b/src/routes/UploadRoute.ts
@@ -43,6 +43,9 @@ export class UploadRoute extends Route {
         return hash.digest("hex");
     }
 
+    /**
+     * The directory where the uploaded data will be saved in
+     */
     public readonly dataDir: string;
 
     constructor(private publicPath: string) {
diff --git a/tslint.json b/tslint.json
index 6341bcb..28549b8 100644
--- a/tslint.json
+++ b/tslint.json
@@ -22,7 +22,14 @@
     "no-namespace": false,
     "no-internal-module": false,
     "max-classes-per-file": false,
-    "no-var-requires": false
+    "no-var-requires": false,
+    "jsdoc-format": [true, "check-multiline-start"],
+    "completed-docs": [true, "classes", "enums", "methods", {
+      "properties": {
+        "privacies": "all",
+        "locations": "instance"
+      }
+    }]
   },
   "jsRules": {
     "max-line-length": {