Add pult frontend stuff

pult/backend/.gitignore

@@ -0,0 +1,153 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+

pult/backend/frontend

@@ -0,0 +1 @@
+../frontend/build

pult/backend/main.py

@@ -0,0 +1,162 @@
+import asyncio
+from typing import *
+
+from fastapi import FastAPI, WebSocket, WebSocketDisconnect, Request
+from fastapi.staticfiles import StaticFiles
+from fastapi.responses import FileResponse
+
+from pydantic import BaseModel, Field, ValidationError
+
+
+app = FastAPI()
+
+
+class Slider:
+    def __init__(self):
+        self.value = 0
+        self.owner: Optional[WebSocket] = None
+        self.release_timer: Optional[asyncio.Task] = None
+        self.release_event = asyncio.Event()
+
+    def cancel_release_timer(self):
+        if self.release_timer is not None:
+            self.release_timer.cancel()
+            self.release_timer = None
+
+    def reset_release_timer(self):
+        self.cancel_release_timer()
+        self.release_timer = asyncio.create_task(self._release_timer())
+
+    async def _release_timer(self):
+        await asyncio.sleep(1)
+        self.release_event.set()
+
+
+dmx_state = [Slider() for _ in range(8)]
+
+
+class GrabAction(BaseModel):
+    action_type: Literal["grab"]
+    slider: int
+
+
+class ReleaseAction(BaseModel):
+    action_type: Literal["release"]
+    slider: int
+
+
+class MoveAction(BaseModel):
+    action_type: Literal["move"]
+    slider: int
+    new_value: int
+
+
+class ClientAction(BaseModel):
+    action: Union[GrabAction, ReleaseAction, MoveAction] = Field(
+        ..., discriminator="action_type"
+    )
+
+
+class SocketManager:
+    def __init__(self):
+        self.sockets = set()
+
+    async def on_connect(self, ws: WebSocket):
+        self.sockets.add(ws)
+        await self.push_state(ws)
+
+    def on_disconnect(self, ws: WebSocket):
+        self.sockets.remove(ws)
+
+        for slider in dmx_state:
+            if slider.owner == ws:
+                slider.owner = None
+
+    async def on_action(
+        self, ws: WebSocket, action: Union[GrabAction, ReleaseAction, MoveAction]
+    ):
+        slider = dmx_state[action.slider]
+
+        if action.action_type == "grab":
+            print(f"grab {action.slider}")
+
+            if slider.owner is None:
+                slider.owner = ws
+                slider.reset_release_timer()
+
+        elif action.action_type == "release":
+            print(f"release {action.slider}")
+
+            if slider.owner == ws:
+                slider.owner = None
+                slider.cancel_release_timer()
+                
+        elif action.action_type == "move":
+            print(f"move {action.slider} -> {action.new_value}")
+
+            if slider.owner == ws:
+                slider.value = action.new_value
+                slider.reset_release_timer()
+
+        await self.push_all()
+
+    async def push_state(self, ws: WebSocket):
+
+        response = []
+
+        for slider in dmx_state:
+            value = slider.value
+
+            if slider.owner == ws:
+                status = "owned"
+            elif slider.owner is not None:
+                status = "locked"
+            else:
+                status = "open"
+
+            response.append({"value": value, "status": status})
+
+        await ws.send_json(response)
+
+    async def push_all(self):
+        await asyncio.gather(*[self.push_state(ws) for ws in self.sockets])
+
+    async def watch_auto_release(self):
+        async def _watch(slider):
+            while True:
+                await slider.release_event.wait()
+                print("resetteroni")
+                slider.release_event.clear()
+                slider.owner = slider.release_timer = None
+                await self.push_all()
+
+        await asyncio.gather(*[_watch(slider) for slider in dmx_state])
+
+
+socket_manager = SocketManager()
+
+
+@app.websocket("/ws")
+async def ws_handler(ws: WebSocket):
+    await ws.accept()
+    await socket_manager.on_connect(ws)
+    try:
+        while True:
+            data = await ws.receive_json()
+            try:
+                action = ClientAction.parse_obj(data)
+                await socket_manager.on_action(ws, action.action)
+            except ValidationError as e:
+                print(e)
+    except WebSocketDisconnect as e:
+        pass
+    finally:
+        socket_manager.on_disconnect(ws)
+
+
+app.mount("/", StaticFiles(directory="frontend", html=True))
+
+
+@app.on_event("startup")
+async def on_startup():
+    asyncio.create_task(socket_manager.watch_auto_release())

pult/backend/requirements.txt

@@ -0,0 +1,11 @@
+anyio==3.5.0
+asgiref==3.5.0
+click==8.0.3
+fastapi==0.73.0
+h11==0.13.0
+idna==3.3
+pydantic==1.9.0
+sniffio==1.2.0
+starlette==0.17.1
+typing-extensions==4.1.1
+uvicorn==0.17.5

pult/frontend/.gitignore

@@ -0,0 +1,23 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

pult/frontend/README.md

@@ -0,0 +1,46 @@
+# Getting Started with Create React App
+
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `npm start`
+
+Runs the app in the development mode.\
+Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
+
+The page will reload if you make edits.\
+You will also see any lint errors in the console.
+
+### `npm test`
+
+Launches the test runner in the interactive watch mode.\
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+
+### `npm run build`
+
+Builds the app for production to the `build` folder.\
+It correctly bundles React in production mode and optimizes the build for the best performance.
+
+The build is minified and the filenames include the hashes.\
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `npm run eject`
+
+**Note: this is a one-way operation. Once you `eject`, you can’t go back!**
+
+If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
+
+Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.
+
+You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.
+
+## Learn More
+
+You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
+
+To learn React, check out the [React documentation](https://reactjs.org/).

pult/frontend/package.json

@@ -0,0 +1,48 @@
+{
+  "name": "frontend",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "@emotion/react": "^11.7.1",
+    "@emotion/styled": "^11.6.0",
+    "@fontsource/roboto": "^4.5.3",
+    "@mui/icons-material": "^5.4.1",
+    "@mui/material": "^5.4.1",
+    "@testing-library/jest-dom": "^5.16.2",
+    "@testing-library/react": "^12.1.2",
+    "@testing-library/user-event": "^13.5.0",
+    "@types/jest": "^27.4.0",
+    "@types/node": "^16.11.24",
+    "@types/react": "^17.0.39",
+    "@types/react-dom": "^17.0.11",
+    "react": "^17.0.2",
+    "react-dom": "^17.0.2",
+    "react-scripts": "5.0.0",
+    "typescript": "^4.5.5",
+    "web-vitals": "^2.1.4"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": [
+      "react-app",
+      "react-app/jest"
+    ]
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}

pult/frontend/public/index.html

@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>React App</title>
+  </head>
+  <body>
+    <noscript>You need to enable JavaScript to run this app.</noscript>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start` or `yarn start`.
+      To create a production bundle, use `npm run build` or `yarn build`.
+    -->
+  </body>
+</html>

pult/frontend/public/robots.txt

@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

pult/frontend/src/App.tsx

@@ -0,0 +1,107 @@
+import React, { useState, useMemo, createContext, useContext } from "react";
+
+import { createTheme, ThemeProvider } from "@mui/material/styles";
+import useMediaQuery from "@mui/material/useMediaQuery";
+import blueGrey from "@mui/material/colors/blueGrey"
+import teal from "@mui/material/colors/teal";
+
+import AppBar from "@mui/material/AppBar";
+import Box from "@mui/material/Box";
+import Button from "@mui/material/Button";
+import Brightness4Icon from "@mui/icons-material/Brightness4";
+import Container from "@mui/material/Container";
+import CssBaseline from "@mui/material/CssBaseline";
+import IconButton from "@mui/material/IconButton";
+import Menu from "@mui/material/Menu";
+import MenuItem from "@mui/material/MenuItem";
+import Toolbar from "@mui/material/Toolbar";
+import Typography from "@mui/material/Typography";
+import Sliders from "./Sliders";
+
+// Light / Dark mode
+
+type ThemeMode = 'system' | 'light' | 'dark';
+const ThemeModeContext = createContext((_: ThemeMode) => { })
+
+const App: React.FC = () => {
+
+  const systemDarkMode = useMediaQuery('(prefers-color-scheme: dark)');
+
+  const [themeMode, setThemeMode] = useState<ThemeMode>('system');
+
+  const theme = useMemo(
+    () => createTheme({
+      palette: {
+        mode: themeMode === 'system' ? (systemDarkMode ? 'dark' : 'light') : themeMode,
+        primary: blueGrey,
+        secondary: teal,
+      }
+    }),
+    [themeMode, systemDarkMode],
+  );
+
+  return <ThemeModeContext.Provider value={setThemeMode}>
+    <ThemeProvider theme={theme}>
+      <CssBaseline />
+      <Layout />
+    </ThemeProvider>
+  </ThemeModeContext.Provider>
+}
+
+// Layout
+
+const Layout: React.FC = () => {
+  return <>
+    <TopBar />
+    <main>
+      <Box sx={{
+        pt: 8,
+        pb: 6,
+      }}>
+        <Container>
+          <Sliders />
+        </Container>
+      </Box>
+    </main>
+  </>
+}
+
+// Top Bar
+
+const TopBar: React.FC = () => {
+
+  const setThemeMode = useContext(ThemeModeContext);
+  const [anchorEl, setAnchorEl] = useState<HTMLButtonElement | null>(null);
+  const open = Boolean(anchorEl);
+
+  return <AppBar position="relative">
+    <Toolbar>
+      <Typography variant="h6" sx={{ flexGrow: 1 }}>
+        DMX Controllinator
+      </Typography>
+      <IconButton
+        onClick={(event: React.MouseEvent<HTMLButtonElement>) => { setAnchorEl(event.currentTarget) }}
+        color="inherit"
+      >
+        <Brightness4Icon />
+      </IconButton>
+      <Menu
+        open={open}
+        anchorEl={anchorEl}
+        onClose={() => { setAnchorEl(null) }}
+      >
+        <MenuItem onClick={() => { setAnchorEl(null); setThemeMode('light'); }}>Light</MenuItem>
+        <MenuItem onClick={() => { setAnchorEl(null); setThemeMode('system'); }}>System</MenuItem>
+        <MenuItem onClick={() => { setAnchorEl(null); setThemeMode('dark'); }}>Dark</MenuItem>
+      </Menu>
+      <Button variant="contained" href="docs">
+        API
+      </Button>
+    </Toolbar>
+  </AppBar >
+}
+
+// Content
+
+
+export default App;

pult/frontend/src/Sliders.tsx

@@ -0,0 +1,120 @@
+import MuiSlider from "@mui/material/Slider";
+import React from "react";
+import { useState, useEffect, useRef } from "react";
+
+type StateItem = {
+    value: number,
+    status: "open" | "owned" | "locked",
+};
+
+type State = Array<StateItem>;
+
+type ClientAction = {
+    action_type: "grab" | "release",
+    slider: number,
+} | {
+    action_type: "move",
+    slider: number,
+    new_value: number,
+}
+
+const Sliders: React.FC = () => {
+    const ws = useRef<WebSocket>();
+    const reconnectInterval = useRef<number>();
+
+    const [state, setState] = useState<State>();
+
+    const connect = () => {
+        // https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/readyState
+        if (ws.current !== undefined && ws.current.readyState !== 3) return;
+
+        const wsURL = new URL("ws", window.location.href);
+        wsURL.protocol = wsURL.protocol.replace("http", "ws");
+        ws.current = new WebSocket(wsURL.href);
+
+        ws.current.onmessage = (ev) => {
+            setState(JSON.parse(ev.data));
+        }
+
+    }
+
+    useEffect(() => {
+        connect();
+        reconnectInterval.current = window.setInterval(connect, 1000);
+
+        return () => {
+            if (reconnectInterval.current !== undefined) window.clearInterval(reconnectInterval.current);
+            if (ws.current !== undefined) ws.current.close();
+        };
+    }, []);
+
+    const cb = (action: ClientAction) => {
+        if (ws.current !== undefined && ws.current.readyState !== 3) {
+            ws.current.send(JSON.stringify({
+                action: action,
+            }));
+        }
+    }
+
+    return <>
+        {state?.map((item, index) => <Slider key={index} item={item} index={index} cb={cb} />)}
+    </>
+}
+
+
+const styleOverride = {
+    "& .MuiSlider-track": { transition: "none" },
+    "& .MuiSlider-thumb": { transition: "none" },
+};
+
+const Slider: React.FC<{
+    item: StateItem,
+    index: number,
+    cb: (action: ClientAction) => void,
+}> = ({ item, index, cb }) => {
+
+    const disabled = item.status === "locked";
+    const [value, setValue] = useState(item.value);
+
+    useEffect(() => {
+        if (item.status !== "owned") setValue(item.value);
+    }, [item]);
+
+    const onChange = (n: number) => {
+        setValue(n);
+        cb({
+            action_type: "move",
+            slider: index,
+            new_value: n,
+        });
+    };
+
+    const onGrab = () => {
+        cb({
+            action_type: "grab",
+            slider: index,
+        });
+    };
+
+    const onRelease = () => {
+        cb({
+            action_type: "release",
+            slider: index,
+        });
+    };
+
+    return <MuiSlider
+        min={0}
+        max={255}
+        sx={disabled ? styleOverride : {}}
+        disabled={disabled}
+        value={value}
+        onChange={(_, n) => { onChange(n as number) }}
+        onMouseDown={onGrab}
+        onTouchStart={onGrab}
+        onMouseUp={onRelease}
+        onTouchEnd={onRelease}
+    />
+};
+
+export default Sliders;

pult/frontend/src/index.tsx

@@ -0,0 +1,15 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App';
+
+import '@fontsource/roboto/300.css';
+import '@fontsource/roboto/400.css';
+import '@fontsource/roboto/500.css';
+import '@fontsource/roboto/700.css';
+
+ReactDOM.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+  document.getElementById('root')
+);

pult/frontend/src/react-app-env.d.ts

@@ -0,0 +1 @@
+/// <reference types="react-scripts" />

pult/frontend/tsconfig.json

@@ -0,0 +1,26 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "lib": [
+      "dom",
+      "dom.iterable",
+      "esnext"
+    ],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "noFallthroughCasesInSwitch": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react-jsx"
+  },
+  "include": [
+    "src"
+  ]
+}