Adds initial progress

source/Discord/Commands/Commands.ts

@@ -0,0 +1,41 @@
+import {HelloWorldCommand} from "./HelloWorldCommand";
+import {Command, CommandUnion} from "./Command";
+import {GroupCommand} from "./Groups";
+import {PlaydatesCommand} from "./Playdates";
+
+const commands: Set<Command> = new Set<Command>([
+    new HelloWorldCommand(),
+    new GroupCommand(),
+    new PlaydatesCommand()
+]);
+
+export default class Commands {
+    private mappedCommands: Map<string, Command> = new Map<string, Command>();
+    
+    constructor() {
+        this.mappedCommands = this.getMap();
+    }
+    
+    public getCommand(commandName: string): CommandUnion|undefined {
+        if (!this.mappedCommands.has(commandName)) {
+            throw new Error(`Unknown command: ${commandName}`);
+        }
+        
+        return this.mappedCommands.get(commandName);
+    }
+    
+    public get allCommands(): Set<Command> {
+        return commands;
+    }
+    
+    private getMap(): Map<string, Command>
+    {
+        const map = new Map<string, Command>();
+        for (const command of commands) {
+            const definition = command.definition()
+            map.set(definition.name, command);
+        }
+        
+        return map;
+    }
+}