From f6e8fefc25a9c693a560d7b61afd69698a7db3ac Mon Sep 17 00:00:00 2001
From: Franklin Waller <franklin.dijks@gmail.com>
Date: Thu, 31 Oct 2019 16:53:56 +0100
Subject: [PATCH] feat(terminal): Add support for running applications inside
 the filesystem

---
 src/js/apps/Explorer/Explorer.scss            |  4 +++
 src/js/apps/Explorer/Explorer.tsx             | 32 +++++++++++++++++--
 .../apps/Explorer/components/File/File.scss   |  7 +++-
 src/js/apps/Explorer/components/File/File.tsx | 17 +++++++++-
 .../molecules/AppHeader/AppHeader.scss        |  4 +++
 .../molecules/AppHeader/AppHeader.tsx         |  6 +++-
 .../organims/AppWindow/AppTitleBar.tsx        |  5 +--
 src/js/pages/HomePage/HomePage.tsx            |  4 +--
 src/js/services/BootService.ts                |  4 +--
 src/js/services/FileSystemService.ts          | 23 +++++++++++--
 src/js/services/TerminalService.ts            |  8 +++++
 11 files changed, 99 insertions(+), 15 deletions(-)

diff --git a/src/js/apps/Explorer/Explorer.scss b/src/js/apps/Explorer/Explorer.scss
index c23964d..87fc904 100644
--- a/src/js/apps/Explorer/Explorer.scss
+++ b/src/js/apps/Explorer/Explorer.scss
@@ -3,3 +3,7 @@
     // justify-content: space-evenly;
     flex-flow: wrap;
 }
+
+.toolbarButton {
+    color: white;
+}
diff --git a/src/js/apps/Explorer/Explorer.tsx b/src/js/apps/Explorer/Explorer.tsx
index 80e9cfc..7f812a7 100644
--- a/src/js/apps/Explorer/Explorer.tsx
+++ b/src/js/apps/Explorer/Explorer.tsx
@@ -2,8 +2,11 @@ import * as React from 'react';
 import AppHeader from '../../components/molecules/AppHeader';
 import List from '@material-ui/core/List';
 import ListItem from '@material-ui/core/ListItem';
+import IconButton from '@material-ui/core/IconButton';
 import ListItemIcon from '@material-ui/core/ListItemIcon';
 import FolderIcon from '@material-ui/icons/Folder';
+import CreateNewFolderOutlinedIcon from '@material-ui/icons/CreateNewFolderOutlined';
+import ArrowUpwardIcon from '@material-ui/icons/ArrowUpward';
 import ListItemText from '@material-ui/core/ListItemText';
 import Collapse from '@material-ui/core/Collapse';
 import ExpandLess from '@material-ui/icons/ExpandLess';
@@ -18,11 +21,12 @@ const styles = require('./Explorer.scss');
 export default function Explorer() {
     const [isLocationsOpen, setLocationsOpen] = React.useState(true);
     const [files, setFiles] = React.useState<Dirent[]>([]);
-    const [path, setPath] = React.useState('/');
+    const [path, setPath] = React.useState('');
 
     React.useEffect(() => {
         const wasmFs = InstanceBag.get<WasmFs>('fs');
-        const filesAndDirectories: any = wasmFs.fs.readdirSync(path, {
+        const newPath = path === '' ? '/' : path;
+        const filesAndDirectories: any = wasmFs.fs.readdirSync(newPath, {
             encoding: "utf8",
             withFileTypes: true,
         });
@@ -37,9 +41,31 @@ export default function Explorer() {
         }
     }
 
+    function handleFolderUpButtonClick() {
+        const splittedPath = path.split('/');
+        splittedPath.pop();
+
+        const newPath = splittedPath.join('/');
+        setPath(newPath);
+    }
+
+    const currentPathFolder = path.split('/').pop();
+    const appHeaderTitle = currentPathFolder === '' ? 'Files' : currentPathFolder;
+
     return (
         <>
-            <AppHeader title="Files" menu={
+            <AppHeader title={appHeaderTitle} toolbar={
+                <>
+                    <IconButton>
+                        <CreateNewFolderOutlinedIcon className={styles.toolbarButton} />
+                    </IconButton>
+                    <IconButton onClick={handleFolderUpButtonClick}>
+                        <ArrowUpwardIcon className={styles.toolbarButton} />
+                    </IconButton>
+                </>
+            }
+
+            menu={
                 <List>
                     <ListItem button onClick={() => setLocationsOpen(!isLocationsOpen)}>
                         <ListItemText primary="Locations" />
diff --git a/src/js/apps/Explorer/components/File/File.scss b/src/js/apps/Explorer/components/File/File.scss
index b59aea4..7fa15c3 100644
--- a/src/js/apps/Explorer/components/File/File.scss
+++ b/src/js/apps/Explorer/components/File/File.scss
@@ -5,9 +5,14 @@
     width: 25%;
 }
 
-.icon {
+.iconWrapper {
     width: 100%;
     height: 60%;
+}
+
+.icon {
+    width: 100%;
+    height: 100%;
     color: #94a9b3;
     cursor: pointer;
 
diff --git a/src/js/apps/Explorer/components/File/File.tsx b/src/js/apps/Explorer/components/File/File.tsx
index 37e1281..4c302fc 100644
--- a/src/js/apps/Explorer/components/File/File.tsx
+++ b/src/js/apps/Explorer/components/File/File.tsx
@@ -1,6 +1,7 @@
 import * as React from 'react';
 import Dirent from 'memfs/lib/Dirent';
 import InsertDriveFileOutlinedIcon from '@material-ui/icons/InsertDriveFileOutlined';
+import WebIcon from '@material-ui/icons/Web';
 const styles = require('./File.scss');
 
 interface Props {
@@ -8,10 +9,24 @@ interface Props {
     onClick?: (folder: Dirent) => void;
 }
 
+function getFileIcon(file: Dirent): any {
+    const fileNameSplitted = file.name.toString().split('.');
+    const fileExtension = fileNameSplitted.pop();
+
+    switch(fileExtension) {
+        case 'wasm':
+            return <WebIcon className={styles.icon}/>
+        default:
+            return <InsertDriveFileOutlinedIcon className={styles.icon}/>
+    }
+}
+
 export default function File(props: Props) {
     return (
         <div className={styles.file}>
-            <InsertDriveFileOutlinedIcon className={styles.icon} onClick={() => props.onClick(props.file)} />
+            <div className={styles.iconWrapper} onClick={() => props.onClick(props.file)}>
+                {getFileIcon(props.file)}
+            </div>
             <span>{props.file.name}</span>
         </div>
     );
diff --git a/src/js/components/molecules/AppHeader/AppHeader.scss b/src/js/components/molecules/AppHeader/AppHeader.scss
index 0d447c1..60f1583 100644
--- a/src/js/components/molecules/AppHeader/AppHeader.scss
+++ b/src/js/components/molecules/AppHeader/AppHeader.scss
@@ -6,6 +6,10 @@ $drawer-width: 240px;
     height: 100%;
 }
 
+.title {
+    flex-grow: 1;
+}
+
 .menuButton {
     color: white !important;
 }
diff --git a/src/js/components/molecules/AppHeader/AppHeader.tsx b/src/js/components/molecules/AppHeader/AppHeader.tsx
index 3c4b73e..c2d326a 100644
--- a/src/js/components/molecules/AppHeader/AppHeader.tsx
+++ b/src/js/components/molecules/AppHeader/AppHeader.tsx
@@ -11,6 +11,7 @@ const styles = require('./AppHeader.scss');
 interface Props {
     title: string;
     menu: React.ReactElement;
+    toolbar?: React.ReactNode;
     children: React.ReactNode;
     headerBackground?: string;
     headerTextColor?: string;
@@ -27,9 +28,12 @@ function AppHeader(props: Props) {
                     {/* <IconButton edge="start" aria-label="open drawer" className={styles.menuButton}>
                         <MenuIcon />
                     </IconButton> */}
-                    <Typography variant="h6" noWrap style={{ color: headerTextColor }}>
+                    <Typography variant="h6" noWrap style={{ color: headerTextColor }} className={styles.title}>
                         {props.title}
                     </Typography>
+                    <div>
+                        {props.toolbar}
+                    </div>
                 </Toolbar>
             </AppBar>
 
diff --git a/src/js/components/organims/AppWindow/AppTitleBar.tsx b/src/js/components/organims/AppWindow/AppTitleBar.tsx
index 8c25863..dbd7155 100644
--- a/src/js/components/organims/AppWindow/AppTitleBar.tsx
+++ b/src/js/components/organims/AppWindow/AppTitleBar.tsx
@@ -25,9 +25,10 @@ function AppTitleBar(props: Props) {
 
     return (
         <header className={styles.appBar} style={{ backgroundColor: props.process.app.theme_color }}>
-            <IconButton aria-label="Back" style={{ color: textColor }}>
+            <div></div>
+            {/* <IconButton aria-label="Back" style={{ color: textColor }}>
                 <ArrowBackIcon />
-            </IconButton>
+            </IconButton> */}
             {isDesktop && <span style={{ color: textColor }}>{props.process.app.short_name}</span>}
             {!isDesktop && <Time style={{ color: textColor }} />}
             <IconButton aria-label="Close" onClick={handleCloseClick} style={{ color: textColor }}>
diff --git a/src/js/pages/HomePage/HomePage.tsx b/src/js/pages/HomePage/HomePage.tsx
index b8686c0..42c34f6 100644
--- a/src/js/pages/HomePage/HomePage.tsx
+++ b/src/js/pages/HomePage/HomePage.tsx
@@ -24,9 +24,9 @@ class HomePage extends React.Component<Props, State> {
         isLoaded: false,
     }
 
-    componentDidMount() {
+    async componentDidMount() {
         const keys = KeyService.keysFromStorage();
-        bootup();
+        await bootup();
 
         if (!this.props.user.info.fullName && keys) {
             this.props.dispatch(loadUserInfo());
diff --git a/src/js/services/BootService.ts b/src/js/services/BootService.ts
index a3d1810..136800d 100644
--- a/src/js/services/BootService.ts
+++ b/src/js/services/BootService.ts
@@ -1,6 +1,6 @@
 import InstanceBag from "../InstanceBag";
 import { createFs } from "./FileSystemService";
 
-export function bootup() {
-    InstanceBag.set('fs', createFs());
+export async function bootup() {
+    InstanceBag.set('fs', await createFs());
 }
diff --git a/src/js/services/FileSystemService.ts b/src/js/services/FileSystemService.ts
index a3fe9bc..8f55146 100644
--- a/src/js/services/FileSystemService.ts
+++ b/src/js/services/FileSystemService.ts
@@ -1,11 +1,15 @@
 // @ts-ignore
 import WasmFs from "@wasmer/wasmfs/lib/index.esm";
+import WasmFsType from '@wasmer/wasmfs';
+import { IFs } from "memfs";
+import { TFileId, IReadFileOptions } from "memfs/lib/volume";
+import { TDataOut } from "memfs/lib/encoding";
 
-export function createFs() {
+export async function createFs() {
     const envContents = '$PWD=/\n$SHELL=/\nPWD=/\nSHELL=/\n$PATH=/\nPATH=/\nUSER=franklinwaller\n$USER=franklinwaller';
-    const wasmFs = new WasmFs();
+    const wasmFs: WasmFsType = new WasmFs();
 
-    console.log('[] wasmFs -> ', wasmFs);
+    const wasm = await (await fetch('/wasm/cowsay.wasm')).arrayBuffer();
 
     wasmFs.fs.mkdirSync('/Applications/');
     wasmFs.fs.mkdirSync('/Library/');
@@ -14,6 +18,7 @@ export function createFs() {
         recursive: true,
     });
 
+    wasmFs.fs.writeFileSync('/Applications/cowsay.wasm', new Uint8Array(wasm));
     wasmFs.fs.writeFileSync('/dev/null', envContents);
     // wasmFs.fs.writeFileSync('.env', envContents);
     wasmFs.fs.writeFileSync('/Users/.env', envContents);
@@ -21,3 +26,15 @@ export function createFs() {
 
     return wasmFs;
 }
+
+export function readFileAsync(fs: IFs, id: TFileId, options?: string | IReadFileOptions): Promise<TDataOut> {
+    return new Promise((resolve, reject) => {
+        fs.readFile(id, options, (error, data) => {
+            if (error) {
+                reject(error);
+            } else {
+                resolve(data);
+            }
+        })
+    });
+}
diff --git a/src/js/services/TerminalService.ts b/src/js/services/TerminalService.ts
index 604496f..afab99c 100644
--- a/src/js/services/TerminalService.ts
+++ b/src/js/services/TerminalService.ts
@@ -5,6 +5,7 @@ import WasmFs from "@wasmer/wasmfs";
 import { fetchCommandFromWAPM } from "@wasmer/wasm-terminal/lib/unoptimized/wasm-terminal.esm";
 // @ts-ignore
 import { lowerI64Imports } from "@wasmer/wasm-transformer/lib/unoptimized/wasm-transformer.esm";
+import { readFileAsync } from "./FileSystemService";
 
 export default class TerminalService {
     wasmFs: WasmFs;
@@ -22,8 +23,15 @@ export default class TerminalService {
     }
 
     async handleCommand(commandName: string, args: string[], envEntriest: any[]) {
+        console.log('[] commandName -> ', commandName);
         console.log('[] args, envEntriest -> ', args, envEntriest);
 
+        // We are trying to execute a binary inside the system
+        if (commandName.endsWith('.wasm')) {
+            // Fetch the binary from the file system and return it
+            return readFileAsync(this.wasmFs.fs, commandName);
+        }
+
         // if (commandName === "pwd") {
         //     const callbackCommand = async (args: string[], stdin: string) => {
         //         console.log('[] this -> ', this);