refactor: initial moves

bot/lib/handlers/AutocompleteHandler.ts

@@ -0,0 +1,22 @@
+import { AutocompleteInteraction } from "discord.js";
+import { AuroraClient } from "@/lib/BotClient";
+ 
+
+/**
+ * Handles autocomplete interactions for slash commands
+ */
+export class AutocompleteHandler {
+    static async handle(interaction: AutocompleteInteraction): Promise<void> {
+        const command = AuroraClient.commands.get(interaction.commandName);
+
+        if (!command || !command.autocomplete) {
+            return;
+        }
+
+        try {
+            await command.autocomplete(interaction);
+        } catch (error) {
+            console.error(`Error handling autocomplete for ${interaction.commandName}:`, error);
+        }
+    }
+}

bot/lib/handlers/CommandHandler.test.ts

@@ -0,0 +1,59 @@
+import { describe, test, expect, mock, beforeEach } from "bun:test";
+import { CommandHandler } from "./CommandHandler";
+import { AuroraClient } from "@/lib/BotClient";
+import { ChatInputCommandInteraction } from "discord.js";
+
+// Mock UserService
+mock.module("@/modules/user/user.service", () => ({
+    userService: {
+        getOrCreateUser: mock(() => Promise.resolve())
+    }
+}));
+
+describe("CommandHandler", () => {
+    beforeEach(() => {
+        AuroraClient.commands.clear();
+        AuroraClient.lastCommandTimestamp = null;
+    });
+
+    test("should update lastCommandTimestamp on successful execution", async () => {
+        const executeSuccess = mock(() => Promise.resolve());
+        AuroraClient.commands.set("test", {
+            data: { name: "test" } as any,
+            execute: executeSuccess
+        } as any);
+
+        const interaction = {
+            commandName: "test",
+            user: { id: "123", username: "testuser" }
+        } as unknown as ChatInputCommandInteraction;
+
+        await CommandHandler.handle(interaction);
+
+        expect(executeSuccess).toHaveBeenCalled();
+        expect(AuroraClient.lastCommandTimestamp).not.toBeNull();
+        expect(AuroraClient.lastCommandTimestamp).toBeGreaterThan(0);
+    });
+
+    test("should not update lastCommandTimestamp on failed execution", async () => {
+        const executeError = mock(() => Promise.reject(new Error("Command Failed")));
+        AuroraClient.commands.set("fail", {
+            data: { name: "fail" } as any,
+            execute: executeError
+        } as any);
+
+        const interaction = {
+            commandName: "fail",
+            user: { id: "123", username: "testuser" },
+            replied: false,
+            deferred: false,
+            reply: mock(() => Promise.resolve()),
+            followUp: mock(() => Promise.resolve())
+        } as unknown as ChatInputCommandInteraction;
+
+        await CommandHandler.handle(interaction);
+
+        expect(executeError).toHaveBeenCalled();
+        expect(AuroraClient.lastCommandTimestamp).toBeNull();
+    });
+});

bot/lib/handlers/CommandHandler.ts

@@ -0,0 +1,41 @@
+import { ChatInputCommandInteraction, MessageFlags } from "discord.js";
+import { AuroraClient } from "@/lib/BotClient";
+import { userService } from "@shared/modules/user/user.service";
+import { createErrorEmbed } from "@lib/embeds";
+ 
+
+/**
+ * Handles slash command execution
+ * Includes user validation and comprehensive error handling
+ */
+export class CommandHandler {
+    static async handle(interaction: ChatInputCommandInteraction): Promise<void> {
+        const command = AuroraClient.commands.get(interaction.commandName);
+
+        if (!command) {
+            console.error(`No command matching ${interaction.commandName} was found.`);
+            return;
+        }
+
+        // Ensure user exists in database
+        try {
+            await userService.getOrCreateUser(interaction.user.id, interaction.user.username);
+        } catch (error) {
+            console.error("Failed to ensure user exists:", error);
+        }
+
+        try {
+            await command.execute(interaction);
+            AuroraClient.lastCommandTimestamp = Date.now();
+        } catch (error) {
+            console.error(String(error));
+            const errorEmbed = createErrorEmbed('There was an error while executing this command!');
+
+            if (interaction.replied || interaction.deferred) {
+                await interaction.followUp({ embeds: [errorEmbed], flags: MessageFlags.Ephemeral });
+            } else {
+                await interaction.reply({ embeds: [errorEmbed], flags: MessageFlags.Ephemeral });
+            }
+        }
+    }
+}

bot/lib/handlers/ComponentInteractionHandler.ts

@@ -0,0 +1,78 @@
+import { ButtonInteraction, StringSelectMenuInteraction, ModalSubmitInteraction, MessageFlags } from "discord.js";
+ 
+import { UserError } from "@lib/errors";
+import { createErrorEmbed } from "@lib/embeds";
+
+type ComponentInteraction = ButtonInteraction | StringSelectMenuInteraction | ModalSubmitInteraction;
+
+/**
+ * Handles component interactions (buttons, select menus, modals)
+ * Routes to appropriate handlers based on customId patterns
+ * Provides centralized error handling with UserError differentiation
+ */
+export class ComponentInteractionHandler {
+    static async handle(interaction: ComponentInteraction): Promise<void> {
+        const { interactionRoutes } = await import("@lib/interaction.routes");
+
+        for (const route of interactionRoutes) {
+            if (route.predicate(interaction)) {
+                const module = await route.handler();
+                const handlerMethod = module[route.method];
+
+                if (typeof handlerMethod === 'function') {
+                    try {
+                        await handlerMethod(interaction);
+                        return;
+                    } catch (error) {
+                        await this.handleError(interaction, error, route.method);
+                        return;
+                    }
+                } else {
+                    console.error(`Handler method ${route.method} not found in module`);
+                }
+            }
+        }
+    }
+
+    /**
+     * Handles errors from interaction handlers
+     * Differentiates between UserError (user-facing) and system errors
+     */
+    private static async handleError(
+        interaction: ComponentInteraction,
+        error: unknown,
+        handlerName: string
+    ): Promise<void> {
+        const isUserError = error instanceof UserError;
+
+        // Determine error message
+        const errorMessage = isUserError
+            ? (error as Error).message
+            : 'An unexpected error occurred. Please try again later.';
+
+        // Log system errors (non-user errors) for debugging
+        if (!isUserError) {
+            console.error(`Error in ${handlerName}:`, error);
+        }
+
+        const errorEmbed = createErrorEmbed(errorMessage);
+
+        try {
+            // Handle different interaction states
+            if (interaction.replied || interaction.deferred) {
+                await interaction.followUp({
+                    embeds: [errorEmbed],
+                    flags: MessageFlags.Ephemeral
+                });
+            } else {
+                await interaction.reply({
+                    embeds: [errorEmbed],
+                    flags: MessageFlags.Ephemeral
+                });
+            }
+        } catch (replyError) {
+            // If we can't send a reply, log it
+            console.error(`Failed to send error response in ${handlerName}:`, replyError);
+        }
+    }
+}

bot/lib/handlers/index.ts

@@ -0,0 +1,3 @@
+export { ComponentInteractionHandler } from "./ComponentInteractionHandler";
+export { AutocompleteHandler } from "./AutocompleteHandler";
+export { CommandHandler } from "./CommandHandler";