socketDrop/websocket_server.py at main · Auraxc/socketDrop · GitHub

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import json
import os
import shutil
from typing import List

import uvicorn
from fastapi import FastAPI, WebSocket, WebSocketDisconnect, UploadFile, File, Header, Request
from fastapi.responses import HTMLResponse
from starlette.responses import FileResponse

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
<head>
    <title>Chat</title>
</head>
<body>
<h1>WebSocket Chat</h1>
<h2>Your ID: <span id="ws-id"></span></h2>
<form action="" onsubmit="sendMessage(event)">
    <input type="text" id="messageText" autocomplete="off"/>
    <button>Send</button>
</form>

<iframe name="dummyframe" id="dummyframe" style="display: none;"></iframe>

<form action="/upload/" method="post" enctype="multipart/form-data" target="dummyframe">
<input name="file" id="file" type="file">
<input type="submit" value="uploadFile上传">
</form>

<ul id='messages'>
</ul>
<script>
    var client_id = Date.now()
    var host = location.host
    document.querySelector("#ws-id").textContent = client_id;
    var ws = new WebSocket(`ws://${host}/ws/msg/${client_id}`);
    ws.onmessage = function (event) {
        var messages = document.getElementById('messages')
        var message = document.createElement('li')
        var msg = JSON.parse(event.data)
        console.log("type", msg.type, event)
        var msg_type = msg.type
        if (msg_type == 'text'){
            var content = document.createTextNode(msg.data)}
            else {
                var content = document.createElement('a')
                content.href = '/file/' + msg.filename
                content.innerText = msg.filename
            }
        message.appendChild(content)
        messages.appendChild(message)
    };

    function sendMessage(event) {
        var input = document.getElementById("messageText")
        var data = input.value;
        form = {"type":"text", "data":data, "client_id":client_id}
        ws.send(JSON.stringify(form))
        input.value = ''
        event.preventDefault()
    }
</script>
</body>
</html>
"""


class ConnectionManager:
    def __init__(self):
        self.active_connections: List[WebSocket] = []

    async def connect(self, websocket: WebSocket):
        await websocket.accept()
        self.active_connections.append(websocket)

    def disconnect(self, websocket: WebSocket):
        self.active_connections.remove(websocket)

    async def send_personal_message(self, message: str, websocket: WebSocket):
        await websocket.send_text(message)

    async def broadcast(self, message: str):
        for connection in self.active_connections:
            await connection.send_text(message)


manager = ConnectionManager()
file_manager = ConnectionManager()


@app.get("/")
async def get():
    # return HTMLResponse(html)
    return FileResponse("index.html")


@app.websocket("/ws/msg/{client_id}")
async def websocket_endpoint(websocket: WebSocket, client_id: int):
    await manager.connect(websocket)

    try:
        while True:
            json_data = await websocket.receive_text()
            data = json.loads(json_data)
            form = {
                "type": data.get("type"),
                "data": data.get("data"),
                "client_id": client_id
            }
            await manager.broadcast(json.dumps(form))
    except WebSocketDisconnect:
        manager.disconnect(websocket)
        await manager.broadcast(f"Client #{client_id} left the chat")


def save_path(folder):
    if not os.path.exists(folder):
        os.makedirs(folder)
    path = os.path.join(folder)
    print("path", path)
    return path + "/"


@app.post("/upload/")
async def create_upload_file(client_id: int, request: Request, file: UploadFile = File(...)):
    try:
        path = save_path("files")
        size = int(request.headers.get("content-length", 1000000))
        if size <= 83886080:

            print("file size", size)
            filename = file.filename
            filepath = path + filename
            with open(filepath, "wb") as buffer:
                shutil.copyfileobj(file.file, buffer)
            form = {"type": "file", "data": filename, "client_id": client_id}
            await manager.broadcast(json.dumps(form))
        else:
            print("too large file")
            return
    except Exception as e:
        print("save file error", e)
    # return {"filename": file.filename}


@app.get("/file/{filename}")
def file_download(filename):
    path = save_path("files")
    file_path = path + filename
    return FileResponse(file_path)


if __name__ == '__main__':
    # uvicorn.run(app, host="0.0.0.0", port=8000, debug=True)
    uvicorn.run(app, host="localhost", port=8000, debug=True)