Merge branch 'julius-dev' of Software_Engineering_I/greenvironment-server into develop

src/graphql/resolvers.ts

@@ -1,12 +1,11 @@
+import {AggregateError} from "bluebird";
 import {GraphQLError} from "graphql";
 import * as status from "http-status";
 import dataaccess from "../lib/dataaccess";
-import {UserNotFoundError} from "../lib/errors/UserNotFoundError";
+import {NotLoggedInGqlError, PostNotFoundGqlError} from "../lib/errors/graphqlErrors";
-import {Group} from "../lib/models";
-import * as models from "../lib/models";
-import {GroupNotFoundGqlError, NotLoggedInGqlError, PostNotFoundGqlError} from "../lib/errors/graphqlErrors";
 import globals from "../lib/globals";
 import {InternalEvents} from "../lib/InternalEvents";
+import * as models from "../lib/models";
 import {is} from "../lib/regex";
 
 /**
@@ -228,6 +227,15 @@ export function resolver(req: any, res: any): any {
                 return new GraphQLError("No sender or type given.");
             }
         },
+        async removeFriend({friendId}: {friendId: number}) {
+            if (req.session.userId) {
+                const self = await models.User.findByPk(req.session.userId);
+                return await self.removeFriend(friendId);
+            } else {
+                res.status(status.UNAUTHORIZED);
+                return new NotLoggedInGqlError();
+            }
+        },
         async getPosts({first, offset, sort}: {first: number, offset: number, sort: dataaccess.SortType}) {
             return await dataaccess.getPosts(first, offset, sort);
         },
@@ -240,15 +248,12 @@ export function resolver(req: any, res: any): any {
         },
         async joinGroup({id}: {id: number}) {
             if (req.session.userId) {
-                const group = await models.Group.findByPk(id);
+                try {
-                if (group) {
+                    return await dataaccess
-                    const user = await models.User.findByPk(req.session.userId);
+                        .changeGroupMembership(id, req.session.userId, dataaccess.MembershipChangeAction.ADD);
-                    await group.$add("rMembers", user);
+                } catch (err) {
-                    await (await group.chat()).$add("rMembers", user);
-                    return group;
-                } else {
                     res.status(status.BAD_REQUEST);
-                    return new GroupNotFoundGqlError(id);
+                    return err.graphqlError;
                 }
             } else {
                 res.status(status.UNAUTHORIZED);
@@ -257,15 +262,12 @@ export function resolver(req: any, res: any): any {
         },
         async leaveGroup({id}: {id: number}) {
             if (req.session.userId) {
-                const group = await models.Group.findByPk(id);
+                try {
-                if (group) {
+                    return await dataaccess
-                    const user = await models.User.findByPk(req.session.userId);
+                        .changeGroupMembership(id, req.session.userId, dataaccess.MembershipChangeAction.REMOVE);
-                    await group.$remove("rMembers", user);
+                } catch (err) {
-                    await (await group.chat()).$remove("rMembers", user);
-                    return group;
-                } else {
                     res.status(status.BAD_REQUEST);
-                    return new GroupNotFoundGqlError(id);
+                    return err.graphqlError;
                 }
             } else {
                 res.status(status.UNAUTHORIZED);
@@ -275,22 +277,18 @@ export function resolver(req: any, res: any): any {
         async addGroupAdmin({groupId, userId}: {groupId: number, userId: number}) {
             if (req.session.userId) {
                 const group = await models.Group.findByPk(groupId);
-                const user = await models.User.findByPk(userId);
                 const self = await models.User.findByPk(req.session.userId);
-                if (!group) {
+                if (group && !(await group.$has("rAdmins", self)) && (await group.creator()) !== self.id) {
-                    res.status(status.BAD_REQUEST);
-                    return new GroupNotFoundGqlError(groupId);
-                }
-                if (!user) {
-                    res.status(status.BAD_REQUEST);
-                    return new UserNotFoundError(userId.toString()).graphqlError;
-                }
-                if (!(await group.$has("rAdmins", self)) && (await group.creator()) !== self.id) {
                     res.status(status.FORBIDDEN);
                     return new GraphQLError("You are not a group admin!");
                 }
-                await group.$add("rAdmins", user);
+                try {
-                return group;
+                    return await dataaccess
+                        .changeGroupMembership(groupId, userId, dataaccess.MembershipChangeAction.OP);
+                } catch (err) {
+                    res.status(status.BAD_REQUEST);
+                    return err.graphqlError;
+                }
 
             } else {
                 res.status(status.UNAUTHORIZED);
@@ -300,25 +298,23 @@ export function resolver(req: any, res: any): any {
         async removeGroupAdmin({groupId, userId}: {groupId: number, userId: number}) {
             if (req.session.userId) {
                 const group = await models.Group.findByPk(groupId);
-                const user = await models.User.findByPk(userId);
+                const isCreator = Number(group.creatorId) === Number(req.session.userId);
-                if (!group) {
+                const userIsCreator = Number(group.creatorId) === Number(userId) ;
-                    res.status(status.BAD_REQUEST);
+                if (group && !isCreator && Number(userId) !== Number(req.session.userId)) {
-                    return new GroupNotFoundGqlError(groupId);
-                }
-                if (!user) {
-                    res.status(status.BAD_REQUEST);
-                    return new UserNotFoundError(userId.toString()).graphqlError;
-                }
-                if ((await group.creator()).id === userId) {
                     res.status(status.FORBIDDEN);
-                    return new GraphQLError("You can't remove the creator of a group.");
+                    return new GraphQLError("You are not the group creator!");
-                }
+                } else if (userIsCreator) {
-                if ((await group.creator()).id !== req.session.userId) {
                     res.status(status.FORBIDDEN);
-                    return new GraphQLError("You are not a group admin!");
+                    return new GraphQLError("You are not allowed to remove a creator as an admin.");
+                }
+
+                try {
+                    return await dataaccess
+                        .changeGroupMembership(groupId, userId, dataaccess.MembershipChangeAction.DEOP);
+                } catch (err) {
+                    res.status(status.BAD_REQUEST);
+                    return err.graphqlError;
                 }
-                await group.$remove("rAdmins", user);
-                return group;
 
             } else {
                 res.status(status.UNAUTHORIZED);

src/graphql/schema.graphql

@@ -49,6 +49,9 @@ type Mutation {
     "lets you deny a request for a given request id"
     denyRequest(requestId: ID!): Boolean
 
+    "removes a friend"
+    removeFriend(friendId: ID!): Boolean
+
     "send a message in a Chatroom"
     sendMessage(chatId: ID!, content: String!): ChatMessage
 
@@ -101,6 +104,12 @@ interface UserData {
 
     "all friends of the user"
     friends: [User]
+
+    "the points of the user"
+    points: Int
+
+    "the levels of the user depending on the points"
+    level: Int
 }
 
 "represents a single user account"
@@ -128,6 +137,15 @@ type User implements UserData{
 
     "all friends of the user"
     friends: [User]
+
+    "the points of the user"
+    points: Int
+
+    "the groups the user has joined"
+    groups: [Group]
+
+    "the levels of the user depending on the points"
+    level: Int
 }
 
 type Profile implements UserData {
@@ -173,6 +191,11 @@ type Profile implements UserData {
     "all groups the user has joined"
     groups: [Group]
 
+    "the points of the user"
+    points: Int
+
+    "the levels of the user depending on the points"
+    level: Int
 }
 
 "represents a single user post"

src/lib/dataaccess.ts

@@ -1,7 +1,11 @@
 import * as crypto from "crypto";
+import * as status from "http-status";
 import {Sequelize} from "sequelize-typescript";
 import {ChatNotFoundError} from "./errors/ChatNotFoundError";
 import {EmailAlreadyRegisteredError} from "./errors/EmailAlreadyRegisteredError";
+import {GroupNotFoundGqlError, NotLoggedInGqlError} from "./errors/graphqlErrors";
+import {GroupNotFoundError} from "./errors/GroupNotFoundError";
+import {NoActionSpecifiedError} from "./errors/NoActionSpecifiedError";
 import {UserNotFoundError} from "./errors/UserNotFoundError";
 import globals from "./globals";
 import {InternalEvents} from "./InternalEvents";
@@ -40,6 +44,8 @@ namespace dataaccess {
                 models.Group,
                 models.GroupAdmin,
                 models.GroupMember,
+                models.EventParticipant,
+                models.Event,
             ]);
         } catch (err) {
             globals.logger.error(err.message);
@@ -207,7 +213,7 @@ namespace dataaccess {
         requestType = requestType || RequestType.FRIENDREQUEST;
 
         const request = await models.Request.create({senderId: sender, receiverId: receiver, requestType});
-        globals.internalEmitter.emit(InternalEvents.REQUESTCREATE, Request);
+        globals.internalEmitter.emit(InternalEvents.REQUESTCREATE, request);
         return request;
     }
 
@@ -232,6 +238,38 @@ namespace dataaccess {
         });
     }
 
+    /**
+     * Changes the membership of a user
+     * @param groupId
+     * @param userId
+     * @param action
+     */
+    export async function changeGroupMembership(groupId: number, userId: number, action: MembershipChangeAction):
+        Promise<models.Group> {
+        const group = await models.Group.findByPk(groupId);
+        if (group) {
+            const user = await models.User.findByPk(userId);
+            if (user) {
+                if (action === MembershipChangeAction.ADD) {
+                    await group.$add("rMembers", user);
+                } else if (action === MembershipChangeAction.REMOVE) {
+                    await group.$remove("rMembers", user);
+                } else if (action === MembershipChangeAction.OP) {
+                    await group.$add("rAdmins", user);
+                } else if (action === MembershipChangeAction.DEOP) {
+                    await group.$remove("rAdmins", user);
+                } else {
+                    throw new NoActionSpecifiedError(MembershipChangeAction);
+                }
+                return group;
+            } else {
+                throw new UserNotFoundError(userId);
+            }
+        } else {
+            throw new GroupNotFoundError(groupId);
+        }
+    }
+
     /**
      * Enum representing the types of votes that can be performed on a post.
      */
@@ -256,6 +294,13 @@ namespace dataaccess {
         TOP = "TOP",
         NEW = "NEW",
     }
+
+    export enum MembershipChangeAction {
+        ADD,
+        REMOVE,
+        OP,
+        DEOP,
+    }
 }
 
 export default dataaccess;

src/lib/errors/GroupNotFoundError.ts

@@ -0,0 +1,8 @@
+import {BaseError} from "./BaseError";
+
+export class GroupNotFoundError extends BaseError {
+    constructor(groupId: number) {
+        super(`Group ${groupId} not found!`);
+    }
+
+}

src/lib/errors/NoActionSpecifiedError.ts

@@ -0,0 +1,11 @@
+import {BaseError} from "./BaseError";
+
+export class NoActionSpecifiedError extends BaseError {
+    constructor(actions?: any) {
+        if (actions) {
+            super(`No action of '${Object.keys(actions).join(", ")}'`);
+        } else {
+            super("No action specified!");
+        }
+    }
+}

src/lib/errors/UserNotFoundError.ts

@@ -1,7 +1,7 @@
 import {BaseError} from "./BaseError";
 
 export class UserNotFoundError extends BaseError {
-    constructor(username: string) {
+    constructor(username: (string|number)) {
         super(`User ${username} not found!`);
     }
 }

src/lib/models/Event.ts

@@ -0,0 +1,34 @@
+import {BelongsTo, BelongsToMany, Column, ForeignKey, Model, NotNull, Table} from "sequelize-typescript";
+import {EventParticipant} from "./EventParticipant";
+import {Group} from "./Group";
+import {User} from "./User";
+
+@Table({underscored: true})
+export class Event extends Model<Event> {
+    @NotNull
+    @Column({allowNull: false})
+    public name: string;
+
+    @NotNull
+    @Column({allowNull: false})
+    public dueDate: Date;
+
+    @NotNull
+    @ForeignKey(() => Group)
+    @Column({allowNull: false})
+    public groupId: number;
+
+    @BelongsTo(() => Group, "groupId")
+    public rGroup: Group;
+
+    @BelongsToMany(() => User, () => EventParticipant)
+    public rParticipants: User[];
+
+    public async group(): Promise<Group> {
+        return await this.$get("rGroup") as Group;
+    }
+
+    public async participants({first, offset}: {first: number, offset: number}): Promise<User[]> {
+        return await this.$get("rParticipants") as User[];
+    }
+}

src/lib/models/EventParticipant.ts

@@ -0,0 +1,16 @@
+import {BelongsTo, BelongsToMany, Column, ForeignKey, Model, NotNull, Table} from "sequelize-typescript";
+import {Event} from "./Event";
+import {User} from "./User";
+
+@Table({underscored: true})
+export class EventParticipant extends Model<EventParticipant> {
+    @NotNull
+    @ForeignKey(() => User)
+    @Column({allowNull: false})
+    public userId: number;
+
+    @NotNull
+    @ForeignKey(() => Event)
+    @Column({allowNull: false})
+    public eventId: number;
+}

src/lib/models/Friendship.ts

@@ -1,15 +1,17 @@
-import {Column, ForeignKey, Model, NotNull, Table} from "sequelize-typescript";
+import {Column, ForeignKey, Model, NotNull, PrimaryKey, Table} from "sequelize-typescript";
 import {User} from "./User";
 
 @Table({underscored: true})
 export class Friendship extends Model<Friendship> {
 
     @ForeignKey(() => User)
+    @PrimaryKey
     @NotNull
     @Column({allowNull: false})
     public userId: number;
 
     @ForeignKey(() => User)
+    @PrimaryKey
     @NotNull
     @Column({allowNull: false})
     public friendId: number;

src/lib/models/Group.ts

@@ -1,18 +1,6 @@
-import * as sqz from "sequelize";
+import {BelongsTo, BelongsToMany, Column, ForeignKey, HasMany, Model, NotNull, Table} from "sequelize-typescript";
-import {
-    BelongsTo,
-    BelongsToMany,
-    Column,
-    CreatedAt, ForeignKey,
-    HasMany,
-    Model,
-    NotNull,
-    Table,
-    Unique,
-    UpdatedAt,
-} from "sequelize-typescript";
-import {ChatMessage} from "./ChatMessage";
 import {ChatRoom} from "./ChatRoom";
+import {Event} from "./Event";
 import {GroupAdmin} from "./GroupAdmin";
 import {GroupMember} from "./GroupMember";
 import {User} from "./User";
@@ -45,6 +33,9 @@ export class Group extends Model<Group> {
     @BelongsTo(() => ChatRoom)
     public rChat: ChatRoom;
 
+    @HasMany(() => Event, "groupId")
+    public rEvents: Event[];
+
     public async creator(): Promise<User> {
         return await this.$get("rCreator") as User;
     }
@@ -62,4 +53,8 @@ export class Group extends Model<Group> {
     public async chat(): Promise<ChatRoom> {
         return await this.$get("rChat") as ChatRoom;
     }
+
+    public async events(): Promise<Event[]> {
+        return await this.$get("rEvents") as Event[];
+    }
 }

src/lib/models/GroupAdmin.ts

@@ -1,16 +1,4 @@
-import * as sqz from "sequelize";
+import {Column, ForeignKey, Model, NotNull, Table,} from "sequelize-typescript";
-import {
-    BelongsTo,
-    BelongsToMany,
-    Column,
-    CreatedAt, ForeignKey,
-    HasMany,
-    Model, Not,
-    NotNull,
-    Table,
-    Unique,
-    UpdatedAt,
-} from "sequelize-typescript";
 import {Group} from "./Group";
 import {User} from "./User";
 

src/lib/models/GroupMember.ts

@@ -1,16 +1,4 @@
-import * as sqz from "sequelize";
+import {Column, ForeignKey, Model, NotNull, Table,} from "sequelize-typescript";
-import {
-    BelongsTo,
-    BelongsToMany,
-    Column,
-    CreatedAt, ForeignKey,
-    HasMany,
-    Model, Not,
-    NotNull,
-    Table,
-    Unique,
-    UpdatedAt,
-} from "sequelize-typescript";
 import {Group} from "./Group";
 import {User} from "./User";
 

src/lib/models/User.ts

@@ -1,5 +1,6 @@
 import * as sqz from "sequelize";
 import {
+    BelongsTo,
     BelongsToMany,
     Column,
     CreatedAt,
@@ -11,9 +12,12 @@ import {
     UpdatedAt,
 } from "sequelize-typescript";
 import {RequestNotFoundError} from "../errors/RequestNotFoundError";
+import {UserNotFoundError} from "../errors/UserNotFoundError";
 import {ChatMember} from "./ChatMember";
 import {ChatMessage} from "./ChatMessage";
 import {ChatRoom} from "./ChatRoom";
+import {Event} from "./Event";
+import {EventParticipant} from "./EventParticipant";
 import {Friendship} from "./Friendship";
 import {Group} from "./Group";
 import {GroupAdmin} from "./GroupAdmin";
@@ -46,9 +50,12 @@ export class User extends Model<User> {
     @Column({defaultValue: 0, allowNull: false})
     public rankpoints: number;
 
-    @BelongsToMany(() => User, () => Friendship)
+    @BelongsToMany(() => User, () => Friendship, "userId")
     public rFriends: User[];
 
+    @BelongsToMany(() => User, () => Friendship, "friendId")
+    public rFriendOf: User[];
+
     @BelongsToMany(() => Post, () => PostVote)
     public votes: Array<Post & {PostVote: PostVote}>;
 
@@ -58,13 +65,16 @@ export class User extends Model<User> {
     @BelongsToMany(() => Group, () => GroupAdmin)
     public rAdministratedGroups: Group[];
 
+    @BelongsToMany(() => Event, () => EventParticipant)
+    public rEvents: Event[];
+
     @BelongsToMany(() => Group, () => GroupMember)
     public rGroups: Group[];
 
     @HasMany(() => Post, "authorId")
     public rPosts: Post[];
 
-    @HasMany(() => Request, "receiverId")
+    @HasMany(() => Request, "senderId")
     public rSentRequests: Request[];
 
     @HasMany(() => Request, "receiverId")
@@ -90,8 +100,16 @@ export class User extends Model<User> {
         return this.getDataValue("createdAt");
     }
 
+    public get points(): number {
+        return this.rankpoints;
+    }
+
+    public get level(): number {
+        return Math.ceil(this.rankpoints / 100);
+    }
+
     public async friends(): Promise<User[]> {
-        return await this.$get("rFriends") as User[];
+        return await this.$get("rFriendOf") as User[];
     }
 
     public async chats(): Promise<ChatRoom[]> {
@@ -126,6 +144,10 @@ export class User extends Model<User> {
         return await this.$get("rGroups") as Group[];
     }
 
+    public async events(): Promise<Event[]> {
+        return await this.$get("rEvents") as Event[];
+    }
+
     public async denyRequest(sender: number, type: RequestType) {
         const request = await this.$get("rReceivedRequests",
             {where: {senderId: sender, requestType: type}}) as Request[];
@@ -140,11 +162,25 @@ export class User extends Model<User> {
         if (requests.length > 0) {
             const request = requests[0];
             if (request.requestType === RequestType.FRIENDREQUEST) {
-                await this.$add("friends", sender);
+                await Friendship.bulkCreate([
+                    {userId: this.id, friendId: sender},
+                    {userId: sender, friendId: this.id},
+                ], {ignoreDuplicates: true});
                 await request.destroy();
             }
         } else {
             throw new RequestNotFoundError(sender, this.id, type);
         }
     }
+
+    public async removeFriend(friendId: number) {
+        const friend = await User.findByPk(friendId);
+        if (friend) {
+            await this.$remove("rFriends", friend);
+            await this.$remove("rFriendOf", friend);
+            return true;
+        } else {
+            throw new UserNotFoundError(friendId);
+        }
+    }
 }

src/lib/models/index.ts

@@ -9,3 +9,5 @@ export {User} from "./User";
 export {Group} from "./Group";
 export {GroupAdmin} from "./GroupAdmin";
 export {GroupMember} from "./GroupMember";
+export {Event} from "./Event";
+export {EventParticipant} from "./EventParticipant";