[Global] Basic commands api implementation (#9)

* [Global] Basic commands api implementation

* [Commands] Return unregister method when registering command

* [Commands] Code cleanup pass

Co-authored-by: Beef <beefers@riseup.net>

src/def.d.ts

@@ -63,6 +63,66 @@ interface Settings {
     developerSettings: boolean;
 }
 
+export interface ApplicationCommand {
+    description: string;
+    name: string;
+    options: ApplicationCommandOption[];
+    execute: (args: any[], ctx: CommandContext) => CommandResult | void | Promise<CommandResult> | Promise<void>;
+    id?: string;
+    applicationId: string;
+    displayName: string;
+    displayDescription: string;
+    inputType: ApplicationCommandInputType;
+    type: ApplicationCommandType;
+}
+
+export enum ApplicationCommandInputType {
+    BUILT_IN,
+    BUILT_IN_TEXT,
+    BUILT_IN_INTEGRATION,
+    BOT,
+    PLACEHOLDER,
+}
+
+export interface ApplicationCommandOption {
+    name: string;
+    description: string;
+    required?: boolean;
+    type: ApplicationCommandOptionType;
+    displayName: string;
+    displayDescription: string;
+}
+
+export enum ApplicationCommandOptionType {
+    SUB_COMMAND = 1,
+    SUB_COMMAND_GROUP,
+    STRING,
+    INTEGER,
+    BOOLEAN,
+    USER,
+    CHANNEL,
+    ROLE,
+    MENTIONABLE,
+    NUMBER,
+    ATTACHMENT,
+}
+
+export enum ApplicationCommandType {
+    CHAT = 1,
+    USER,
+    MESSAGE,
+}
+
+export interface CommandContext {
+    channel: any;
+    guild: any;
+}
+
+export interface CommandResult {
+    content: string;
+    tts?: boolean;
+}
+
 interface RNConstants extends _RN.PlatformConstants {
     // Android
     Version: number;
@@ -174,7 +234,10 @@ interface VendettaObject {
         stopPlugin: (id: string) => void;
         removePlugin: (id: string) => void;
         getSettings: (id: string) => JSX.Element;
-    }
+    };
+    commands: {
+        registerCommand: (command: ApplicationCommand) => () => void;
+    };
     settings: Settings;
     logger: Logger;
     version: string;

src/index.ts

@@ -14,6 +14,7 @@ import { fixTheme } from "@ui/fixTheme";
 import { connectToDebugger, patchLogHook, versionHash } from "@lib/debug";
 import { plugins, fetchPlugin, evalPlugin, stopPlugin, removePlugin, getSettings } from "@lib/plugins";
 import settings from "@lib/settings";
+import { registerCommand } from "./lib/commands";
 
 console.log("Hello from Vendetta!");
 
@@ -50,7 +51,10 @@ async function init() {
                 evalPlugin: evalPlugin,
                 stopPlugin: stopPlugin,
                 removePlugin: removePlugin,
-                getSettings: getSettings
+                getSettings: getSettings,
+            },
+            commands: {
+                registerCommand: registerCommand,
             },
             settings: settings,
             logger: logger,

src/lib/commands.ts

@@ -0,0 +1,26 @@
+import { ApplicationCommand } from "@types";
+import { findByProps } from "@metro/filters";
+import { after } from "@lib/patcher";
+
+const commandsModule = findByProps("getBuiltInCommands")
+
+let commands: ApplicationCommand[] = [];
+
+after("getBuiltInCommands", commandsModule, (args, res) => res.concat(commands));
+
+export function registerCommand(command: ApplicationCommand): () => void {
+	// Get built in commands
+	const builtInCommands = commandsModule.getBuiltInCommands(1, true, false);
+	builtInCommands.sort(function (a: ApplicationCommand, b: ApplicationCommand) { return parseInt(b.id!) - parseInt(a.id!) });
+
+	const lastCommand = builtInCommands[builtInCommands.length - 1];
+
+	// Override the new command's id to the last command id - 1
+	command.id = (parseInt(lastCommand.id, 10) - 1).toString();
+
+	// Add it to the commands array
+	commands.push(command);
+
+	// Return command id so it can be unregistered
+	return () => commands = commands.filter(({ id }) => id !== command.id);
+}