[Global] Loader config and identity (#17)

* [TS] Add definition for DCDFileManager

* [Storage] Introduce backends

* [Settings] Add loader config

* [TS] Update storage definitions

* [TS] Update loader config and identity types

* [Loader] Expose loader config and identity

* [UI] Actually update UI for the new loader config fields

src/def.d.ts

@@ -176,6 +176,42 @@ interface MMKVManager {
     clear: () => void;
 }
 
+interface DCDFileManager {
+    /**
+     * @param path **Full** path to file
+     */
+    fileExists: (path: string) => Promise<boolean>;
+    /**
+     * Allowed URI schemes on Android: `file://`, `content://` ([See here](https://developer.android.com/reference/android/content/ContentResolver#accepts-the-following-uri-schemes:_3))
+     */
+    getSize: (uri: string) => Promise<boolean>;
+    /**
+     * @param path **Full** path to file
+     * @param encoding Set to `base64` in order to encode response
+     */
+    readFile(path: string, encoding: "base64" | "utf8"): Promise<string>;
+    /**
+     * Beware! This function has differing functionality on IOS and Android.
+     * @param storageDir Either `cache` or `documents`.
+     * @param path Path in `storageDir`, parents are recursively created.
+     * @param data The data to write to the file
+     * @param encoding Set to `base64` if `data` is base64 encoded.
+     * @returns Promise that resolves to path of the file once it got written
+     */
+    writeFile(storageDir: "cache" | "documents", path: string, data: string, encoding: "base64" | "utf8"): Promise<string>;
+    getConstants: () => {
+        /**
+         * The path the `documents` storage dir (see {@link writeFile}) represents.
+         */
+        DocumentsDirPath: string;
+    };
+    /**
+     * Will apparently cease to exist some time in the future so please use {@link getConstants} instead.
+     * @deprecated
+     */
+    DocumentsDirPath: string;
+}
+
 type Indexable<Type> = { [index: string]: Type }
 
 type EmitterEvent = "SET" | "GET" | "DEL";
@@ -200,6 +236,30 @@ interface Emitter {
     emit: (event: EmitterEvent, data: EmitterListenerData) => void;
 }
 
+interface StorageBackend {
+    get: () => unknown | Promise<unknown>;
+    set: (data: unknown) => void | Promise<void>;
+}
+
+interface LoaderConfig {
+    customLoadUrl: {
+        enabled: boolean;
+        url: string;
+    };
+    loadReactDevTools: boolean;
+}
+
+interface LoaderIdentity {
+    name: string;
+    features: {
+        loaderConfig?: boolean;
+        devtools?: {
+            prop: string;
+            version: string;
+        }
+    }
+}
+
 interface VendettaObject {
     patcher: {
         after: typeof _spitroast.after;
@@ -277,11 +337,17 @@ interface VendettaObject {
     storage: {
         createProxy: <T>(target: T) => { proxy: T, emitter: Emitter };
         useProxy: <T>(storage: T) => T;
-        createStorage: <T>(storeName: string) => Promise<Awaited<T>>;
+        createStorage: <T>(backend: StorageBackend) => Promise<Awaited<T>>;
         wrapSync: <T extends Promise<any>>(store: T) => Awaited<T>;
         awaitSyncWrapper: (store: any) => Promise<void>;
+        createMMKVBackend: (store: string) => StorageBackend;
+        createFileBackend: (file: string) => StorageBackend;
     };
     settings: Settings;
+    loader: {
+        identity?: LoaderIdentity;
+        config: LoaderConfig;
+    };
     logger: Logger;
     version: string;
     unload: () => void;
@@ -299,5 +365,6 @@ declare global {
         modules: MetroModules;
         vendetta: VendettaObject;
         React: typeof _React;
+        __vendetta_loader?: LoaderIdentity;
     }
 }

src/lib/plugins.ts

@@ -1,5 +1,5 @@
 import { Indexable, PluginManifest, Plugin } from "@types";
-import { awaitSyncWrapper, createStorage, wrapSync } from "@lib/storage";
+import { awaitSyncWrapper, createMMKVBackend, createStorage, wrapSync } from "@lib/storage";
 import safeFetch from "@utils/safeFetch";
 import logger from "@lib/logger";
 
@@ -11,7 +11,7 @@ type EvaledPlugin = {
     settings: JSX.Element;
 };
 
-export const plugins = wrapSync(createStorage<Indexable<Plugin>>("VENDETTA_PLUGINS"));
+export const plugins = wrapSync(createStorage<Indexable<Plugin>>(createMMKVBackend("VENDETTA_PLUGINS")));
 const loadedPlugins: Indexable<EvaledPlugin> = {};
 
 export async function fetchPlugin(id: string) {
@@ -61,7 +61,7 @@ export async function evalPlugin(plugin: Plugin) {
         plugin: {
             manifest: plugin.manifest,
             // Wrapping this with wrapSync is NOT an option.
-            storage: await createStorage<Indexable<any>>(plugin.id),
+            storage: await createStorage<Indexable<any>>(createMMKVBackend(plugin.id)),
         }
     };
     const pluginString = `vendetta=>{return ${plugin.js}}\n//# sourceURL=${plugin.id}`;

src/lib/settings.ts

@@ -1,4 +1,5 @@
-import { createStorage, wrapSync } from "@lib/storage";
+import { createFileBackend, createMMKVBackend, createStorage, wrapSync } from "@lib/storage";
-import { Settings } from "@types";
+import { LoaderConfig, Settings } from "@types";
 
-export default wrapSync(createStorage<Settings>("VENDETTA_SETTINGS"));
+export default wrapSync(createStorage<Settings>(createMMKVBackend("VENDETTA_SETTINGS")));
+export const loaderConfig = wrapSync(createStorage<LoaderConfig>(createFileBackend("vendetta_loader.json")));

src/lib/storage/backends.ts

@@ -0,0 +1,24 @@
+import { DCDFileManager, MMKVManager, StorageBackend } from "@types";
+import { ReactNative as RN } from "@metro/hoist";
+
+const MMKVManager = RN.NativeModules.MMKVManager as MMKVManager;
+const DCDFileManager = RN.NativeModules.DCDFileManager as DCDFileManager;
+
+const filePathFixer: (file: string) => string = RN.Platform.select({
+  default: (f) => f,
+  ios: (f) => `Documents/${f}`,
+});
+
+export const createMMKVBackend = (store: string): StorageBackend => ({
+  get: async function() {
+    return JSON.parse((await MMKVManager.getItem(store)) ?? "{}");
+  },
+  set: (data) => MMKVManager.setItem(store, JSON.stringify(data)),
+});
+
+export const createFileBackend = (file: string): StorageBackend => ({
+  get: async function() {
+    return JSON.parse((await DCDFileManager.readFile(`${DCDFileManager.getConstants().DocumentsDirPath}/${file}`, "utf8")) ?? "{}");
+  },
+  set: (data) => void DCDFileManager.writeFile("documents", filePathFixer(file), JSON.stringify(data), "utf8"),
+});

src/lib/storage/index.ts

@@ -1,6 +1,6 @@
-import { Emitter, MMKVManager } from "@types";
+import { Emitter, MMKVManager, StorageBackend } from "@types";
 import { ReactNative as RN } from "@metro/hoist";
-import createEmitter from "./emitter";
+import createEmitter from "../emitter";
 
 const MMKVManager = RN.NativeModules.MMKVManager as MMKVManager;
 
@@ -79,11 +79,11 @@ export function useProxy<T>(storage: T): T {
     return storage;
 }
 
-export async function createStorage<T>(storeName: string): Promise<Awaited<T>> {
+export async function createStorage<T>(backend: StorageBackend): Promise<Awaited<T>> {
-    const data = JSON.parse((await MMKVManager.getItem(storeName)) ?? "{}");
+    const data = await backend.get();
     const { proxy, emitter } = createProxy(data);
 
-    const handler = () => MMKVManager.setItem(storeName, JSON.stringify(proxy));
+    const handler = () => backend.set(proxy);
     emitter.on("SET", handler);
     emitter.on("DEL", handler);
 
@@ -115,3 +115,5 @@ export function wrapSync<T extends Promise<any>>(store: T): Awaited<T> {
 }
 
 export const awaitSyncWrapper = (store: any) => new Promise<void>((res) => store[syncAwaitSymbol](res));
+
+export * from "./backends";

src/lib/windowObject.ts

@@ -1,7 +1,7 @@
 import { VendettaObject } from "@types";
 import patcher from "@lib/patcher";
 import logger from "@lib/logger";
-import settings from "@lib/settings";
+import settings, { loaderConfig } from "@lib/settings";
 import * as constants from "@lib/constants";
 import * as debug from "@lib/debug";
 import * as plugins from "@lib/plugins";
@@ -37,6 +37,10 @@ export default async function windowObject(unloads: any[]): Promise<VendettaObje
         commands: without(commands, "patchCommands"),
         storage,
         settings,
+        loader: {
+            identity: window.__vendetta_loader,
+            config: loaderConfig,
+        },
         logger,
         version: debug.versionHash,
         unload: () => {

src/ui/settings/pages/Developer.tsx

@@ -1,17 +1,28 @@
-import { ReactNative as RN, NavigationNative } from "@metro/common";
+import { ReactNative as RN, NavigationNative, stylesheet, constants } from "@metro/common";
-import { Forms } from "@ui/components";
+import { Forms, General } from "@ui/components";
 import { getAssetIDByName } from "@ui/assets";
 import { showToast } from "@ui/toasts";
 import { connectToDebugger } from "@lib/debug";
 import { useProxy } from "@lib/storage";
-import settings from "@lib/settings";
+import settings, { loaderConfig } from "@lib/settings";
 import logger from "@lib/logger";
 
-const { FormSection, FormRow, FormInput, FormDivider } = Forms;
+const { FormSection, FormRow, FormSwitchRow, FormInput, FormDivider } = Forms;
+const { Text } = General;
+
+const styles = stylesheet.createThemedStyleSheet({
+    code: {
+        fontFamily: constants.Fonts.CODE_SEMIBOLD,
+        includeFontPadding: false,
+        fontSize: 12,
+    }
+});
 
 export default function Developer() {
     const navigation = NavigationNative.useNavigation();
+
     useProxy(settings);
+    useProxy(loaderConfig);
 
     return (
         <RN.ScrollView style={{ flex: 1 }} contentContainerStyle={{ paddingBottom: 38 }}>
@@ -46,6 +57,32 @@ export default function Developer() {
                     }}
                 />}
             </FormSection>
+            {window.__vendetta_loader?.features.loaderConfig && <FormSection title="Loader config">
+                <FormSwitchRow
+                    label="Load from custom url"
+                    subLabel={"Load Vendetta from a custom endpoint."}
+                    leading={<FormRow.Icon source={getAssetIDByName("copy")} />}
+                    value={loaderConfig.customLoadUrl.enabled}
+                    onValueChange={(v: boolean) => {
+                        loaderConfig.customLoadUrl.enabled = v;
+                    }}
+                />
+                {loaderConfig.customLoadUrl.enabled && <FormInput
+                    value={loaderConfig.customLoadUrl.url}
+                    onChange={(v: string) => loaderConfig.customLoadUrl.url = v}
+                    placeholder="http://localhost:4040/vendetta.js"
+                    title="VENDETTA URL"
+                />}
+                {window.__vendetta_loader.features.devtools && <FormSwitchRow
+                    label="Load React DevTools"
+                    subLabel={`Version: ${window.__vendetta_loader.features.devtools.version}`}
+                    leading={<FormRow.Icon source={getAssetIDByName("ic_badge_staff")} />}
+                    value={loaderConfig.loadReactDevTools}
+                    onValueChange={(v: boolean) => {
+                        loaderConfig.loadReactDevTools = v;
+                    }}
+                />}
+            </FormSection>}
             <FormSection title="Other">
                 <FormRow
                     label="Asset Browser"