Implement Subcommands; fix errors due to Settings <-> Plugins circular imports (#174)

4 files changed, 68 insertions, 24 deletions

diff --git a/src/api/Commands/index.ts b/src/api/Commands/index.ts
index 3b42379..a20ac50 100644
--- a/src/api/Commands/index.ts
+++ b/src/api/Commands/index.ts
@@ -18,7 +18,7 @@
 
 import { makeCodeblock } from "../../utils/misc";
 import { generateId, sendBotMessage } from "./commandHelpers";
-import { ApplicationCommandInputType, ApplicationCommandType, Argument, Command, CommandContext, Option } from "./types";
+import { ApplicationCommandInputType, ApplicationCommandOptionType, ApplicationCommandType, Argument, Command, CommandContext, Option } from "./types";
 
 export * from "./commandHelpers";
 export * from "./types";
@@ -79,7 +79,12 @@ export const _handleCommand = function (cmd: Command, args: Argument[], ctx: Com
     }
 } as never;
 
-function modifyOpt(opt: Option | Command) {
+
+/**
+ * Prepare a Command Option for Discord by filling missing fields
+ * @param opt
+ */
+export function prepareOption<O extends Option | Command>(opt: O): O {
     opt.displayName ||= opt.name;
     opt.displayDescription ||= opt.description;
     opt.options?.forEach((opt, i, opts) => {
@@ -88,11 +93,36 @@ function modifyOpt(opt: Option | Command) {
         else if (opt === ReqPlaceholder) opts[i] = RequiredMessageOption;
         opt.choices?.forEach(x => x.displayName ||= x.name);
 
-        modifyOpt(opts[i]);
+        prepareOption(opts[i]);
+    });
+    return opt;
+}
+
+// Yes, Discord registers individual commands for each subcommand
+// TODO: This probably doesn't support nested subcommands. If that is ever needed,
+// investigate
+function registerSubCommands(cmd: Command, plugin: string) {
+    cmd.options?.forEach(o => {
+        if (o.type !== ApplicationCommandOptionType.SUB_COMMAND)
+            throw new Error("When specifying sub-command options, all options must be sub-commands.");
+        const subCmd = {
+            ...cmd,
+            ...o,
+            type: ApplicationCommandType.CHAT_INPUT,
+            name: `${cmd.name} ${o.name}`,
+            displayName: `${cmd.name} ${o.name}`,
+            subCommandPath: [{
+                name: o.name,
+                type: o.type,
+                displayName: o.name
+            }],
+            rootCommand: cmd
+        };
+        registerCommand(subCmd as any, plugin);
     });
 }
 
-export function registerCommand(command: Command, plugin: string) {
+export function registerCommand<C extends Command>(command: C, plugin: string) {
     if (!BUILT_IN) {
         console.warn(
             "[CommandsAPI]",
@@ -112,7 +142,13 @@ export function registerCommand(command: Command, plugin: string) {
     command.inputType ??= ApplicationCommandInputType.BUILT_IN_TEXT;
     command.plugin ||= plugin;
 
-    modifyOpt(command);
+    prepareOption(command);
+
+    if (command.options?.[0]?.type === ApplicationCommandOptionType.SUB_COMMAND) {
+        registerSubCommands(command, plugin);
+        return;
+    }
+
     commands[command.name] = command;
     BUILT_IN.push(command);
 }
diff --git a/src/api/Commands/types.ts b/src/api/Commands/types.ts
index a40353f..9acab66 100644
--- a/src/api/Commands/types.ts
+++ b/src/api/Commands/types.ts
@@ -81,6 +81,7 @@ export interface Argument {
     name: string;
     value: string;
     focused: undefined;
+    options: Argument[];
 }
 
 export interface Command {
diff --git a/src/api/settings.ts b/src/api/settings.ts
index e25572f..9e518c6 100644
--- a/src/api/settings.ts
+++ b/src/api/settings.ts
@@ -42,12 +42,6 @@ const DefaultSettings: Settings = {
     plugins: {}
 };
 
-for (const plugin in plugins) {
-    DefaultSettings.plugins[plugin] = {
-        enabled: plugins[plugin].required ?? false
-    };
-}
-
 try {
     var settings = JSON.parse(VencordNative.ipc.sendSync(IpcEvents.GET_SETTINGS)) as Settings;
     mergeDefaults(settings, DefaultSettings);
@@ -60,13 +54,19 @@ type SubscriptionCallback = ((newValue: any, path: string) => void) & { _path?:
 const subscriptions = new Set<SubscriptionCallback>();
 
 // Wraps the passed settings object in a Proxy to nicely handle change listeners and default values
-function makeProxy(settings: Settings, root = settings, path = ""): Settings {
+function makeProxy(settings: any, root = settings, path = ""): Settings {
     return new Proxy(settings, {
         get(target, p: string) {
             const v = target[p];
 
             // using "in" is important in the following cases to properly handle falsy or nullish values
             if (!(p in target)) {
+                // Return empty for plugins with no settings
+                if (path === "plugins" && p in plugins)
+                    return target[p] = makeProxy({
+                        enabled: plugins[p].required ?? false
+                    }, root, `plugins/${p}`);
+
                 // Since the property is not set, check if this is a plugin's setting and if so, try to resolve
                 // the default value.
                 if (path.startsWith("plugins.")) {
diff --git a/src/plugins/index.ts b/src/plugins/index.ts
index fdb256c..be6fae3 100644
--- a/src/plugins/index.ts
+++ b/src/plugins/index.ts
@@ -28,24 +28,31 @@ const logger = new Logger("PluginManager", "#a6d189");
 export const plugins = Plugins;
 export const patches = [] as Patch[];
 
-for (const plugin of Object.values(Plugins)) if (plugin.patches && Settings.plugins[plugin.name].enabled) {
-    for (const patch of plugin.patches) {
-        patch.plugin = plugin.name;
-        if (!Array.isArray(patch.replacement)) patch.replacement = [patch.replacement];
-        patches.push(patch);
-    }
+export function isPluginEnabled(p: string) {
+    return (Settings.plugins[p]?.enabled || Plugins[p]?.required) ?? false;
 }
 
-export function startAllPlugins() {
-    for (const name in Plugins) if (Settings.plugins[name].enabled) {
-        startPlugin(Plugins[name]);
+for (const p of Object.values(Plugins))
+    if (p.patches && isPluginEnabled(p.name)) {
+        for (const patch of p.patches) {
+            patch.plugin = p.name;
+            if (!Array.isArray(patch.replacement))
+                patch.replacement = [patch.replacement];
+            patches.push(patch);
+        }
     }
+
+export function startAllPlugins() {
+    for (const name in Plugins)
+        if (isPluginEnabled(name)) {
+            startPlugin(Plugins[name]);
+        }
 }
 
 export function startDependenciesRecursive(p: Plugin) {
     let restartNeeded = false;
     const failures: string[] = [];
-    if (p.dependencies) for (const dep of p.dependencies) {
+    p.dependencies?.forEach(dep => {
         if (!Settings.plugins[dep].enabled) {
             startDependenciesRecursive(Plugins[dep]);
             // If the plugin has patches, don't start the plugin, just enable it.
@@ -53,12 +60,12 @@ export function startDependenciesRecursive(p: Plugin) {
                 logger.warn(`Enabling dependency ${dep} requires restart.`);
                 Settings.plugins[dep].enabled = true;
                 restartNeeded = true;
-                continue;
+                return;
             }
             const result = startPlugin(Plugins[dep]);
             if (!result) failures.push(dep);
         }
-    }
+    });
     return { restartNeeded, failures };
 }