Adds Event system and automatic messages

package-lock.json

@@ -18,7 +18,9 @@
         "discord.js": "^14.18.0",
         "dotenv": "^16.4.7",
         "esbuild": "^0.25.0",
+        "is-plain-object": "^5.0.0",
         "log4js": "^6.9.1",
+        "node-cron": "^4.0.7",
         "object-path-set": "^1.0.2",
         "svg2img": "^1.0.0-beta.2"
       }
@@ -1913,6 +1915,15 @@
       "integrity": "sha512-lw7DUp0aWXYg+CBCN+JKkcE0Q2RayZnSvnZBlwgxHBQhqt5pZNVy4Ri7H9GmmXkdu7LUthszM+Tor1u/2iBcpQ==",
       "license": "MIT"
     },
+    "node_modules/is-plain-object": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/is-plain-object/-/is-plain-object-5.0.0.tgz",
+      "integrity": "sha512-VRSzKkbMm5jMDoKLbltAkFQ5Qr7VDiTFGXxYFXXowVj387GeGNOCsOH6Msy00SGZ3Fp84b1Naa1psqgcCIEP5Q==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/jimp": {
       "version": "0.16.13",
       "resolved": "https://registry.npmjs.org/jimp/-/jimp-0.16.13.tgz",
@@ -2086,6 +2097,15 @@
         "node": ">=10"
       }
     },
+    "node_modules/node-cron": {
+      "version": "4.0.7",
+      "resolved": "https://registry.npmjs.org/node-cron/-/node-cron-4.0.7.tgz",
+      "integrity": "sha512-A37UUDpxRT/kWanELr/oMayCWQFk9Zx9BEUoXrAKuKwKzH4XuAX+vMixMBPkgZBkADgJwXv91w5cMRTNSVP/mA==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
     "node_modules/object-path-set": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/object-path-set/-/object-path-set-1.0.2.tgz",

package.json

@@ -23,7 +23,9 @@
     "discord.js": "^14.18.0",
     "dotenv": "^16.4.7",
     "esbuild": "^0.25.0",
+    "is-plain-object": "^5.0.0",
     "log4js": "^6.9.1",
+    "node-cron": "^4.0.7",
     "object-path-set": "^1.0.2",
     "svg2img": "^1.0.0-beta.2"
   }

source/Container/Container.ts

@@ -1,15 +1,17 @@
+import {Class} from "../types/Class";
+
 export class Container {
     static instance: Container;
     
     private instances: Map<string, object> = new Map();
     
-    public set<T extends {constructor: {name: string}}>(instance: T, name: string|null = null): void
+    public set<T extends Class>(instance: T, name: string|null = null): void
     {
         const settingName = name ?? instance.constructor.name;
         this.instances.set(settingName.toLowerCase(), instance);
     }
     
-    public get<T>(name: string): T
+    public get<T extends Class>(name: string): T
     {
         return <T>this.instances.get(name.toLowerCase());
     }

source/Container/Services.ts

@@ -9,6 +9,7 @@ import {GuildEmojiRoleManager} from "discord.js";
 import {GroupConfigurationRepository} from "../Repositories/GroupConfigurationRepository";
 import {DiscordClient} from "../Discord/DiscordClient";
 import {IconCache} from "../Icons/IconCache";
+import {EventHandler} from "../Events/EventHandler";
 
 export enum ServiceHint {
     App,
@@ -30,6 +31,8 @@ export class Services {
         const iconCache = new IconCache(discordClient);
         container.set<IconCache>(iconCache);
         
+        container.set<EventHandler>(new EventHandler());
+        
         // @ts-ignore
         configure({
             appenders: {

source/Discord/CommandPartials/GroupSelection.ts

@@ -30,7 +30,7 @@ export class GroupSelection {
         )
     }
     
-    public static getGroup(interaction: CommandInteraction): GroupModel {
+    public static getGroup(interaction: CommandInteraction|AutocompleteInteraction): GroupModel {
         const groupname = interaction.options.get("group", true);
         if (!groupname) {
             throw new UserError("No group name provided");

source/Discord/Commands/Playdates.ts

@@ -4,7 +4,7 @@ import {
     CommandInteraction,
     AutocompleteInteraction,
     GuildMember,
-    EmbedBuilder, MessageFlags, ChatInputCommandInteraction, ModalSubmitFields
+    EmbedBuilder, MessageFlags, ChatInputCommandInteraction, ModalSubmitFields, time, User
 } from "discord.js";
 import {AutocompleteCommand, ChatInteractionCommand, Command} from "./Command";
 import {Container} from "../../Container/Container";
@@ -93,17 +93,32 @@ export class PlaydatesCommand implements Command, AutocompleteCommand, ChatInter
             throw new UserError("No date or invalid date format for the to parameter.");
         }
 
+        if (fromDate > toDate) {
+            throw new UserError("The to-date can't be earlier than the from-date");
+        }
+        
+        const playdateRepo = Container.get<PlaydateRepository>(PlaydateRepository.name);
+        
+        const collidingTimes = playdateRepo.findPlaydatesInRange(fromDate, toDate, group);
+        if (collidingTimes.length > 0) {
+            throw new UserError("The playdate collides with another playdate. Please either remove the old one or choose a different time.")
+        }
+        
         const playdate: Partial<PlaydateModel> = {
             group: group,
             from_time: new Date(fromDate),
             to_time: new Date(toDate),
         }
 
-        const id = Container.get<PlaydateRepository>(PlaydateRepository.name).create(playdate);
+        const id = playdateRepo.create(playdate);
 
         const embed = new EmbedBuilder()
             .setTitle("Created a play-date.")
             .setDescription(":white_check_mark: Your playdate has been created! You and your group get notified, when its time.")
+            .setFields({
+                name: "Created playdate",
+                value: `${time(new Date(fromDate),'F')} - ${time(new Date(toDate), 'F')}`,
+            })
             .setFooter({
                 text: `Group: ${group.name}`
             })
@@ -127,12 +142,8 @@ export class PlaydatesCommand implements Command, AutocompleteCommand, ChatInter
             return;
         }
 
-        const groupname = interaction.options.getString("group")
-        const group = Container.get<GroupRepository>(GroupRepository.name).findGroupByName((groupname ?? '').toString());
-        if (!group) {
-            throw new UserError("No group found");
-        }
-
+        const group = GroupSelection.getGroup(interaction);
+        
         const playdates = Container.get<PlaydateRepository>(PlaydateRepository.name).findFromGroup(group);
         await interaction.respond(
             playdates.map(playdate => {
@@ -153,8 +164,8 @@ export class PlaydatesCommand implements Command, AutocompleteCommand, ChatInter
                 playdates.map((playdate) =>
                 {
                     return {
-                        name: `${playdate.from_time.toLocaleString()} - ${playdate.to_time.toLocaleString()}`,
-                        value: ``
+                        name: `${time(playdate.from_time, 'F')} - ${time(playdate.to_time, 'F')}`,
+                        value: `${time(playdate.from_time, 'R')}`
                     }
                 })
             )

source/Events/DefaultEvents.ts

@@ -0,0 +1,27 @@
+import {EventHandler, TimedEvent} from "./EventHandler";
+import {Container} from "../Container/Container";
+import {ReminderEvent} from "./ReminderEvent";
+import {ElementCreatedEvent} from "./ElementCreatedEvent";
+import {ClassNamed} from "../types/Class";
+import {sendCreatedNotificationEventHandler} from "./Handlers/SendCreatedNotification";
+import {PlaydateModel} from "../Models/PlaydateModel";
+
+export class DefaultEvents {
+  public static setupTimed() {
+    const events: TimedEvent[] = [
+      new ReminderEvent()
+    ]
+    
+    const eventHandler = Container.get<EventHandler>(EventHandler.name);
+    
+    events.forEach((event) => {
+      eventHandler.addTimed(event);
+    })
+  }
+  
+  public static setupHandlers() {
+    const eventHandler = Container.get<EventHandler>(EventHandler.name);
+    
+    eventHandler.addHandler<ElementCreatedEvent<PlaydateModel>>(ElementCreatedEvent.name, sendCreatedNotificationEventHandler);
+  }
+}

source/Events/ElementCreatedEvent.ts

@@ -0,0 +1,10 @@
+import {Model} from "../Models/Model";
+
+export class ElementCreatedEvent<T extends Model = Model> {
+  constructor(
+    public readonly tableName: string, 
+    public readonly instanceValues: Partial<T>,
+    public readonly instanceId: number
+  ) {
+  }
+}

source/Events/EventHandler.ts

@@ -0,0 +1,48 @@
+import cron from "node-cron";
+import {Nullable} from "../types/Nullable";
+import {Class, ClassNamed} from "../types/Class";  
+
+export type EventConfiguration = {
+  name: string, 
+  maxExecutions?: number,
+}
+
+export interface TimedEvent {
+  configuration: EventConfiguration,
+  cronExpression: string,
+  execute: () => void
+}
+
+export class EventHandler {
+  private eventHandlers: Map<string, CallableFunction[]> = new Map();
+  
+  constructor() {
+  }
+  
+  public addHandler<T extends Class>(eventName: string, handler: (event: T) => void) {
+    if (!this.eventHandlers.has(eventName)) {
+      this.eventHandlers.set(eventName, []);
+    }
+    
+    this.eventHandlers.get(eventName)?.push(handler);
+  }
+  
+  public dispatch<T extends Class>(event: T) {
+    const eventName = event.constructor.name;
+    if (!this.eventHandlers.has(eventName)) {
+      return;
+    }
+    
+    this.eventHandlers.get(eventName)?.forEach((handler) => {
+      handler(event);
+    })
+  }
+  
+  public addTimed(event: TimedEvent) {
+    if (!cron.validate(event.cronExpression)) {
+      throw new Error(`Can't create event with name '${event.configuration.name}': Invalid cron expression.`)
+    }
+    
+    cron.schedule(event.cronExpression, event.execute.bind(event), event.configuration);
+  }
+}

source/Events/Handlers/SendCreatedNotification.ts

@@ -0,0 +1,75 @@
+import {ElementCreatedEvent} from "../ElementCreatedEvent";
+import {DefaultHandler} from "../DefaultEvents";
+import {PlaydateModel} from "../../Models/PlaydateModel";
+import PlaydateTableConfiguration from "../../Database/tables/Playdate";
+import {EmbedBuilder, roleMention, time} from "discord.js";
+import {ArrayUtils} from "../../Utilities/ArrayUtils";
+import {GroupConfigurationHandler} from "../../Groups/GroupConfigurationHandler";
+import {Container} from "../../Container/Container";
+import {GroupConfigurationRenderer} from "../../Groups/GroupConfigurationRenderer";
+import {GroupConfigurationRepository} from "../../Repositories/GroupConfigurationRepository";
+import {DiscordClient} from "../../Discord/DiscordClient";
+
+const NEW_PLAYDATE_MESSAGES = [
+  'A new playdate was added. Lets hope, your GM has not planned to kill you. >:]',
+  'Oh look. A new playdate... neat.',
+  'A new playdate. Lets polish the dice.'
+];
+
+export async function sendCreatedNotificationEventHandler(event: ElementCreatedEvent<PlaydateModel>) {
+  if (event.tableName !== PlaydateTableConfiguration.name) {
+    return;
+  }
+
+  const playdate = event.instanceValues;
+  if (!playdate.group || !playdate.from_time || !playdate.to_time) {
+    return;
+  }
+ 
+  
+  const configurationHandler = new GroupConfigurationHandler(
+    Container.get<GroupConfigurationRepository>(GroupConfigurationRepository.name),
+    playdate.group
+  );
+  
+  const targetChannel = configurationHandler.getConfigurationByPath('channels.newPlaydates');
+  if (!targetChannel) {
+    return;
+  }
+  
+  const channel = await Container.get<DiscordClient>(DiscordClient.name).Client.channels.fetch(targetChannel)
+  if (!channel) {
+    return;
+  }
+
+  if (!channel.isTextBased()) {
+    return;
+  }
+
+  if (!channel.isSendable()) {
+    return;
+  }
+
+  const embed = new EmbedBuilder()
+    .setTitle("New Playdate added")
+    .setDescription(
+      ArrayUtils.chooseRandom(NEW_PLAYDATE_MESSAGES)
+    )
+    .addFields({
+      name: "Playdate:",
+      value: `${time(playdate.from_time, "F")} - ${time(playdate.to_time, 'F')}`,
+    })
+    .setFooter({
+      text: `Group: ${playdate.group.name}`
+    });
+
+  channel.send({
+    content: roleMention(playdate.group.role.roleid),
+    embeds: [
+      embed
+    ],
+    allowedMentions: {
+      roles: [ playdate.group.role.roleid ]
+    }
+  })
+}

source/Events/ReminderEvent.ts

@@ -0,0 +1,122 @@
+import {CronExpression, Event, EventConfiguration, TimedEvent} from "./EventHandler";
+import {Container} from "../Container/Container";
+import Playdate from "../Database/tables/Playdate";
+import {PlaydateRepository} from "../Repositories/PlaydateRepository";
+import {GroupConfigurationHandler} from "../Groups/GroupConfigurationHandler";
+import {GroupConfigurationRepository} from "../Repositories/GroupConfigurationRepository";
+import {PlaydateModel} from "../Models/PlaydateModel";
+import {ChannelId} from "../types/DiscordTypes";
+import {DiscordClient} from "../Discord/DiscordClient";
+import {EmbedBuilder, MessageFlags, roleMention, time} from "discord.js";
+import {ArrayUtils} from "../Utilities/ArrayUtils";
+
+export class ReminderEvent implements TimedEvent {
+  private static REMINDER_INTERVALS = [
+    1,
+    7
+  ];
+  
+  private static REMINDER_NOTIFICATIONS = [
+    'The darkness approaches. Get ready!',
+    'Your aid is requested once again.',
+    'Grab your dice and show them evil-doers how its done!',
+  ]
+  
+
+  configuration: EventConfiguration = {
+    name: "Reminders",
+  }
+  
+  cronExpression: CronExpression = "0 9 * * *"
+
+  private groupConfigurationRepository: GroupConfigurationRepository
+  private playdateRepository: PlaydateRepository
+  private discordClient: DiscordClient
+  
+  constructor() {
+    this.playdateRepository = Container.get<PlaydateRepository>(PlaydateRepository.name);
+    this.groupConfigurationRepository = Container.get<GroupConfigurationRepository>(GroupConfigurationRepository.name);
+    this.discordClient = Container.get<DiscordClient>(DiscordClient.name);
+  }
+
+  async execute() {
+    const today = new Date();
+    today.setHours(0,0,0,0);
+    
+    const playdates = ReminderEvent.REMINDER_INTERVALS.flatMap((interval) => {
+      const fromDate = new Date(today.valueOf())
+      fromDate.setDate(fromDate.getDate() + interval);
+      
+      const toDate = new Date(today.valueOf())
+      toDate.setDate(toDate.getDate() + interval);
+      toDate.setHours(23,59,59,999);
+      
+      return this.playdateRepository.findPlaydatesInRange(fromDate, toDate);
+    }, this)
+    
+    const promises = playdates
+      .map((playdate) => {
+        if (!playdate.group) {
+          return Promise.resolve();
+        }
+        
+        const configurationHandler = new GroupConfigurationHandler(
+          this.groupConfigurationRepository,
+          playdate.group
+        );
+        
+        const config = configurationHandler.getConfiguration();
+        const targetChannel = config.channels?.playdateReminders;
+        
+        if (!targetChannel) {
+          return Promise.resolve();
+        }
+        
+        return this.sendReminder(playdate, targetChannel, config.locale);
+      }, this)
+    
+    await Promise.all(promises);
+  }
+  
+  private async sendReminder(playdate: PlaydateModel, targetChannel: ChannelId, locale: Intl.Locale) {
+    if (!playdate.group) {
+      return;
+    }
+    
+    const channel = await this.discordClient.Client.channels.fetch(targetChannel)
+    if (!channel) {
+      return;
+    }
+    
+    if (!channel.isTextBased()) {
+      return;
+    }
+    
+    if (!channel.isSendable()) {
+      return;
+    }
+    
+    const embed = new EmbedBuilder()
+      .setTitle("Playdate reminder")
+      .setDescription(
+        ArrayUtils.chooseRandom(ReminderEvent.REMINDER_NOTIFICATIONS)
+      )
+      .addFields({
+        name: "Next Playdate:",
+        value: `${time(playdate.from_time, "F")} - ${time(playdate.from_time, 'R')}`,
+      })
+      .setFooter({
+        text: `Group: ${playdate.group.name}`
+      });
+
+    channel.send({
+      content: roleMention(playdate.group.role.roleid),
+      embeds: [
+        embed
+      ],
+      allowedMentions: {
+        roles: [ playdate.group.role.roleid ]
+      }
+    })
+  }
+}

source/Groups/GroupConfigurationHandler.ts

@@ -6,11 +6,15 @@ import {GroupConfigurationResult, GroupConfigurationTransformers} from "./GroupC
 import setPath from 'object-path-set';
 import deepmerge from "deepmerge";
 import {Nullable} from "../types/Nullable";
+import {isPlainObject} from "is-plain-object";
 
 export class GroupConfigurationHandler {
     private static DEFAULT_CONFIGURATION: RuntimeGroupConfiguration = {
         channels: null,
         locale: new Intl.Locale('en-GB'),
+        permissions: {
+            allowMemberManagingPlaydates: false
+        }
     }
     
     private readonly transformers: GroupConfigurationTransformers = new GroupConfigurationTransformers();
@@ -42,7 +46,9 @@ export class GroupConfigurationHandler {
     }
     
     public getConfiguration(): RuntimeGroupConfiguration {
-        return deepmerge(GroupConfigurationHandler.DEFAULT_CONFIGURATION, this.getDatabaseConfiguration());
+        return deepmerge(GroupConfigurationHandler.DEFAULT_CONFIGURATION, this.getDatabaseConfiguration(), {
+            isMergeableObject: isPlainObject
+        });
     }
     
     public getConfigurationByPath(path: string): Nullable<GroupConfigurationResult> {

source/Groups/GroupConfigurationRenderer.ts

@@ -34,6 +34,7 @@ import {UserError} from "../Discord/UserError";
 import {RuntimeGroupConfiguration} from "./RuntimeGroupConfiguration";
 import {ChannelId} from "../types/DiscordTypes";
 import {IconCache} from "../Icons/IconCache";
+import {ifError} from "node:assert";
 
 type UIElementCollection = Record<string, UIElement>;
 type UIElement = {
@@ -76,6 +77,19 @@ export class GroupConfigurationRenderer {
             key: 'locale',
             description: "Provides locale to be used for this group. This mostly sets how the dates are displayed, but this can also be later used for translations.",
             isConfiguration: true
+        },
+        permissions: {
+            label: "Permissions",
+            key: "permissions",
+            description: "Allows customization, how the members are allowed to interact with the data stored in the group.",
+            childrenElements: {
+                allowMemberManagingPlaydates: {
+                    label: "Manage Playdates",
+                    key: "allowMemberManagingPlaydates",
+                    description: "Defines if the members are allowed to manage playdates like adding or deleting them.",
+                    isConfiguration: true
+                }
+            }
         }
     }
     
@@ -220,6 +234,8 @@ export class GroupConfigurationRenderer {
                 return displaynames.of((<Intl.Locale>value).baseName) ?? "Unknown";
             case TransformerType.Channel:
                 return channelMention(<ChannelId>value);
+            case TransformerType.PermissionBoolean:
+                return value ? "Allowed" : "Disallowed"
                 
             default:
                 return "None";
@@ -279,6 +295,21 @@ export class GroupConfigurationRenderer {
                     .setCustomId(GroupConfigurationRenderer.SETVALUE_COMMAND + breadcrumbPath)
                     .setChannelTypes(ChannelType.GuildText)
                     .setPlaceholder("New Value");
+            case TransformerType.PermissionBoolean:
+                return new StringSelectMenuBuilder()
+                    .setCustomId(GroupConfigurationRenderer.SETVALUE_COMMAND + breadcrumbPath)
+                    .setOptions(
+                      [
+                          {
+                              label: "Allow",
+                              value: "1"
+                          },
+                          {
+                              label: "Disallow",
+                              value: "0" 
+                          }
+                      ]
+                    )
                 
             default:
                 return new StringSelectMenuBuilder()
@@ -309,6 +340,7 @@ export class GroupConfigurationRenderer {
         switch (transformerType) {
             case TransformerType.Locale:
             case TransformerType.Channel:
+            case TransformerType.PermissionBoolean:
                 return interaction.values.join('; ');
             default:
                 throw new Error("Unhandled select menu");

source/Groups/GroupConfigurationTransformers.ts

@@ -8,6 +8,7 @@ import {ArrayUtils} from "../Utilities/ArrayUtils";
 export enum TransformerType {
     Locale,
     Channel,
+    PermissionBoolean,
 }
 
 type GroupConfigurationTransformer = {
@@ -16,7 +17,7 @@ type GroupConfigurationTransformer = {
 }
 
 export type GroupConfigurationResult = 
-    ChannelId | Intl.Locale
+    ChannelId | Intl.Locale | boolean
 
 export class GroupConfigurationTransformers {
     static TRANSFORMERS: GroupConfigurationTransformer[] = [
@@ -31,6 +32,10 @@ export class GroupConfigurationTransformers {
         {
             path: ['locale'],
             type: TransformerType.Locale,
+        },
+        {
+            path: ['permissions', 'allowMemberManagingPlaydates'],
+            type: TransformerType.PermissionBoolean
         }
     ];
     
@@ -45,6 +50,8 @@ export class GroupConfigurationTransformers {
                 return new Intl.Locale(configValue.value)
             case TransformerType.Channel:
                 return <ChannelId>configValue.value;
+            case TransformerType.PermissionBoolean:
+                return configValue.value === '1';
         }
     }
     

source/Groups/RuntimeGroupConfiguration.d.ts

@@ -1,9 +1,17 @@
+import {ChannelId} from "../types/DiscordTypes";
+import {Nullable} from "../types/Nullable";
+
 export type RuntimeGroupConfiguration = {
     channels: Nullable<ChannelRuntimeGroupConfiguration>,
     locale: Intl.Locale,
+    permissions: PermissionRuntimeGroupConfiguration
 };
 
 export type ChannelRuntimeGroupConfiguration = {
     newPlaydates: ChannelId,
     playdateReminders: ChannelId
+}
+
+export type PermissionRuntimeGroupConfiguration = {
+    allowMemberManagingPlaydates: boolean
 }

source/Icons/IconCache.ts

@@ -2,7 +2,7 @@ import {Routes} from "discord.js";
 import {DiscordClient} from "../Discord/DiscordClient";
 
 export class IconCache {
-  private existingIcons: Map<string, string>|null;
+  private existingIcons: Map<string, string> | undefined;
   
   constructor(
     private readonly client: DiscordClient
@@ -11,7 +11,7 @@ export class IconCache {
   }
   
   public get(iconName: string): string | null {
-    if (!this.existingIcons?.has(iconName) ?? false) {
+    if (!this.existingIcons?.has(iconName)) {
       return null;
     }
     

source/Repositories/PlaydateRepository.ts

@@ -34,6 +34,30 @@ export class PlaydateRepository extends Repository<PlaydateModel, DBPlaydate> {
 
         return finds.map((playdate) => this.convertToModelType(playdate, group));
     }
+    findPlaydatesInRange(fromDate: Date|number, toDate: Date|number, group: GroupModel | undefined = undefined) {
+        if (fromDate instanceof Date) {
+            fromDate = fromDate.getTime();
+        }
+        if (toDate instanceof Date) {
+            toDate = toDate.getTime();
+        }
+        
+        let sql = `SELECT * FROM ${this.schema.name} WHERE time_from > ? AND time_from < ?`;
+        const params = [fromDate, toDate];
+        
+        if (group) {
+            sql = `${sql} AND groupid = ?`
+            params.push(group.id)
+        }
+        
+        const finds = this.database.fetchAll<number, DBPlaydate>(
+          sql,
+          ...params
+        );
+
+        return finds.map((playdate) => this.convertToModelType(playdate, group));
+    }
+    
     protected convertToModelType(intermediateModel: DBPlaydate | undefined, fixedGroup: Nullable<GroupModel> = null): PlaydateModel {
         if (!intermediateModel) {
             throw new Error("Unable to convert the playdate model");

source/Repositories/Repository.ts

@@ -3,8 +3,12 @@ import {Model} from "../Models/Model";
 import { Nullable } from "../types/Nullable";
 import {DatabaseDefinition} from "../Database/DatabaseDefinition";
 import {debug} from "node:util";
+import {Container} from "../Container/Container";
+import {EventHandler} from "../Events/EventHandler";
+import {ElementCreatedEvent} from "../Events/ElementCreatedEvent";
 
 export class Repository<ModelType extends Model, IntermediateModelType = unknown> {
+    
     constructor(
         protected readonly database: DatabaseConnection,
         public readonly schema: DatabaseDefinition,
@@ -30,7 +34,11 @@ export class Repository<ModelType extends Model, IntermediateModelType = unknown
         const sql = `INSERT INTO ${this.schema.name}(${Object.keys(createObject).join(',')}) 
                      VALUES (${Object.keys(createObject).map(() => "?").join(',')})`;
         const result = this.database.execute(sql, ...Object.values(createObject));
-        return result.lastInsertRowid;
+        const id = result.lastInsertRowid;
+        
+        Container.get<EventHandler>(EventHandler.name).dispatch(new ElementCreatedEvent<ModelType>(this.schema.name, instance, id));
+        
+        return id;
     }
     
     public update(instance: Partial<ModelType>&{id: number}): boolean {

source/main.ts

@@ -4,9 +4,12 @@ import {Container} from "./Container/Container";
 import {DatabaseConnection} from "./Database/DatabaseConnection";
 import {ServiceHint, Services} from "./Container/Services";
 import {IconCache} from "./Icons/IconCache";
+import {DefaultEvents} from "./Events/DefaultEvents";
 
 const container = Container.getInstance();
 Services.setup(container, ServiceHint.App);
+DefaultEvents.setupTimed();
+DefaultEvents.setupHandlers();
 (async () => {
   const env = container.get<Environment>(Environment.name);
 

source/types/Class.ts

@@ -0,0 +1,2 @@
+export type Class = {constructor: {name: string}}
+export type ClassNamed = {name: string}