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its working

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Waylon S. Walker 2025-03-16 20:32:02 -05:00
parent 3410f98d7e
commit 30d01b82b0
2 changed files with 119 additions and 41 deletions
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74
server.py
View file

@ -12,6 +12,7 @@
import asyncio
from fastapi import FastAPI, Request, WebSocket, WebSocketDisconnect
from fastapi.responses import HTMLResponse
import json
from redis import asyncio as redis
@ -24,6 +25,43 @@ templates = Jinja2Templates(directory="templates")
# Redis connection
redis_client = redis.Redis(host="localhost", port=6379, decode_responses=True)
new_button = """
<div id='after_chat_wrapper'>
<div
id='after_chat'
class='h-12'
_="
on load
wait 10ms
on intersection(intersecting) having threshold 0.5
if #go_to_bottom exists and intersecting
then remove #go_to_bottom
"
>
</div>
</div>
<div id="after_form" class='mb-24'>
<button
id="go_to_bottom"
class="fixed bottom-0 right-0 px-2 py-1 rounded font-bold m-4 invisible"
hx-get="/null"
hx-swap="outerHTML"
hx-trigger="intersect from:#after_chat"
_="
on load
wait 10ms
remove .invisible
on click
go to bottom of the body
"
>
go to bottom
</button>
</div>
"""
# Constants
REDIS_MESSAGE_LIST = "chat_messages"
WEBSOCKET_CHANNEL = "websocket_channel"
@ -41,6 +79,7 @@ async def listen_to_redis():
await pubsub.subscribe(WEBSOCKET_CHANNEL)
async for message in pubsub.listen():
print(message)
if message["type"] == "message":
data = message["data"]
data = json.loads(data)
@ -52,11 +91,16 @@ async def listen_to_redis():
color_level = color_levels[level]
# Send message to all connected clients
for name, websocket in connected_clients.items():
html_data = ""
if "chat_message" in data:
if data.get("name") == name:
html_data = f'<div id="chat_room" hx-swap-oob="beforeend"><li class="px-4 py-2 h-12 w-64 rounded bg-green-{color_level} ml-8 my-4">{data.get("name")}: {data.get("chat_message")}</li></div>'
html_data += f'<div id="chat_room" hx-swap-oob="beforeend" hx-swap="scroll:bottom"><li class="px-4 py-2 h-12 w-124 rounded bg-green-{color_level} ml-8 my-4">{data.get("name")}: {data.get("chat_message")}</li></div>'
else:
html_data = f'<div id="chat_room" hx-swap-oob="beforeend"><li class="px-4 py-2 h-12 w-64 rounded bg-blue-{color_level} my-4">{data.get("name")}: {data.get("chat_message")}</li></div>'
await websocket.send_text(html_data)
html_data += f'<div id="chat_room" hx-swap-oob="beforeend" hx-swap="scroll:bottom"><li class="px-4 py-2 h-12 w-124 rounded bg-blue-{color_level} my-4">{data.get("name")}: {data.get("chat_message")}</li></div>'
if "notification" in data:
html_data += f'<div id="notifications" hx-swap-oob="beforeend"><li class="px-4 py-2 h-12 w-64 rounded bg-blue-{color_level} my-4" _="on click remove me on load wait 3s remove me" hx-trigger="click, load delay:3s" hx-swap="outerHTML">{data.get("notification")}</li></div>'
await websocket.send_text(html_data + new_button)
@app.on_event("startup")
@ -106,17 +150,30 @@ async def websocket_endpoint(websocket: WebSocket):
name = random.choice(chat_names)
connected_clients[name] = websocket
data = {
"name": name,
"notification": f"{name} joined the chat",
}
data_str = json.dumps(data)
await redis_client.publish(WEBSOCKET_CHANNEL, data_str)
# Send previous messages to the new client
messages = await redis_client.lrange(REDIS_MESSAGE_LIST, 0, -1)
for msg in messages:
msg_data = json.loads(msg)
color_level = color_levels[0] # Use first color level for old messages
html_data = ""
if "chat_message" in msg_data:
if msg_data.get("name") == name:
html_data = f'<div id="chat_room" hx-swap-oob="beforeend"><li class="px-4 py-2 h-12 w-64 rounded bg-green-{color_level} ml-8 my-4">{msg_data.get("name")}: {msg_data.get("chat_message")}</li></div>'
html_data += f'<div id="chat_room" hx-swap-oob="beforeend"><li class="px-4 py-2 h-12 w-124 rounded bg-green-{color_level} ml-8 my-4" _="">{msg_data.get("name")}: {msg_data.get("chat_message")}</li></div>'
else:
html_data = f'<div id="chat_room" hx-swap-oob="beforeend"><li class="px-4 py-2 h-12 w-64 rounded bg-blue-{color_level} my-4">{msg_data.get("name")}: {msg_data.get("chat_message")}</li></div>'
await websocket.send_text(html_data)
html_data += f'<div id="chat_room" hx-swap-oob="beforeend"><li class="px-4 py-2 h-12 w-124 rounded bg-blue-{color_level} my-4" _="">{msg_data.get("name")}: {msg_data.get("chat_message")}</li></div>'
if "notification" in msg_data:
html_data += f'<div id="notifications" hx-swap-oob="beforeend"><li class="px-4 py-2 h-12 w-64 rounded bg-blue-{color_level} my-4">{msg_data.get("notification")}</li></div>'
await websocket.send_text(html_data + new_button)
try:
while True:
@ -139,6 +196,11 @@ async def root(request: Request):
return templates.TemplateResponse("index.html", {"request": request})
@app.get("/null")
async def root(request: Request):
return HTMLResponse("")
if __name__ == "__main__":
import uvicorn

70
templates/index.html
View file

@ -7,62 +7,78 @@
<script src="https://unpkg.com/htmx.org@1.9.12"></script>
<script src="https://unpkg.com/htmx.org@1.9.12/dist/ext/ws.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@tailwindcss/browser@4"></script>
<style>
#ws-status {
position: fixed;
top: 10px;
right: 10px;
padding: 5px 10px;
border-radius: 5px;
font-weight: bold;
}
.connecting { background-color: orange; color: white; }
.connected { background-color: green; color: white; }
.disconnected { background-color: red; color: white; }
.error { background-color: darkred; color: white; }
</style>
<script src="https://unpkg.com/hyperscript.org@0.9.14"></script>
<script>
window.onload = () => {
document.getElementById("chatInput").focus();
const messagesContainer = document.getElementById("chat_room");
messagesContainer.scrollTop = messagesContainer.scrollHeight;
};
</script>
</head>
<body>
<body onload="window.scrollTo(0, document.body.scrollHeight);">
<div class="flex flex-col gap-2 justify-center items-center" hx-ext="ws" ws-connect="/ws">
<h2>WebSocket HTML Example</h2>
<div id="ws-status" class="disconnected">Disconnected</div>
<div id="notifications"></div>
<ul id="chat_room" hx-swap-oob='beforeend'>
<div id="ws-status"
class="disconnected fixed top-0 right-0 px-2 py-1 rounded font-bold m-4"
>Disconnected</div>
<ul
id="notifications"
class="fixed top-0 left-0 px-2 py-1 rounded font-bold m-4"
></ul>
<ul id="chat_room"
hx-swap-oob='beforeend'
>
</ul>
<form id="form" ws-send class="flex gap-2 fixed bottom-0">
<input id="chatInput" name="chat_message" class='px-2 py-1 bg-gray-800 border border-gray-600 rounded' type="text">
<div id='after_chat_wrapper'>
</div>
<form id="form" ws-send class="flex gap-2 fixed bottom-0 w-full p-4 bg-gray-900">
<input id="chatInput" name="chat_message" class='w-124 min-h-24 rounded-lg px-2 py-1 mx-auto bg-gray-800 border border-gray-600 rounded' type="text">
</form>
<div id="after_form" class='mb-24'>
<button
id="go_to_bottom"
class="fixed bottom-0 right-0 px-2 py-1 rounded font-bold m-4 invisible"
hx-get="/null"
hx-swap="outerHTML"
hx-trigger="intersect from:#after_chat"
_="
on load
wait 10ms
remove .invisible
on click
go to bottom of the body
"
>
go to bottom
</button>
</div>
</div>
</body>
<script>
document.addEventListener("htmx:wsConnecting", function() {
updateStatus("Connecting...", "connecting");
updateStatus("Connecting...", "bg-orange-500");
});
document.addEventListener("htmx:wsOpen", function() {
updateStatus("Connected", "connected");
updateStatus("Connected", "bg-green-500");
});
document.addEventListener("htmx:wsClose", function() {
updateStatus("Disconnected", "disconnected");
updateStatus("Disconnected", "bg-red-500");
});
document.addEventListener("htmx:wsError", function() {
updateStatus("Error!", "error");
updateStatus("Error!", "bg-red-500");
});
function updateStatus(text, statusClass) {
let statusElement = document.getElementById("ws-status");
statusElement.textContent = text;
statusElement.className = statusClass;
statusElement.classList.remove('bg-orange-500', 'bg-green-500', 'bg-red-500');
statusElement.classList.add(statusClass);
}
</script>
</html>