[+] Server

src/receiver.py

@@ -0,0 +1,59 @@
+from fastapi import FastAPI, HTTPException
+from fastapi.middleware.cors import CORSMiddleware
+from pathlib import Path
+import uvicorn
+import time
+import re
+import winsound
+from vk import press_key, release_key
+
+app = FastAPI()
+
+# CORS
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# Configuration
+PATH = Path('aime.txt')
+AUDIO_EFFECT = Path(__file__).parent / 'audio/mixkit-gaming-lock-2848.wav'
+
+
+@app.post("/scan")
+def scan(uid: str):
+    """
+    Parse the UID from the raw input string.
+    """
+    uid = uid.replace(":", "")
+
+    # If the UID is 16-digit hex, treat it as a Felica and convert that to a 20-digit int
+    if re.match(r'^[0-9a-fA-F]{16}$', uid):
+        uid = str(int(uid, 16))
+
+    # Else if uid is a 20-digit int, use it
+    elif re.match(r'^\d{20}$', uid):
+        pass
+
+    # Else, raise an error
+    else:
+        raise HTTPException(status_code=400, detail="Invalid UID format")
+
+    PATH.write_text(uid)
+
+    # Play sound
+    winsound.PlaySound(str(AUDIO_EFFECT), winsound.SND_FILENAME)
+
+    # Simulate key press
+    press_key()
+    time.sleep(5)
+    release_key()
+
+    return {"uid": uid}
+
+
+if __name__ == '__main__':
+    uvicorn.run(app, host="0.0.0.0", port=8249)

src/vk.py

@@ -0,0 +1,17 @@
+import ctypes
+from ctypes import wintypes
+
+# Virtual-Key codes
+# RESERVED: 0xEA
+VK = 0x6B
+KEYEVENTF_KEYUP = 0x0002
+
+
+def press_key(vk_code = VK):
+    scan_code = ctypes.windll.user32.MapVirtualKeyA(vk_code, 0)
+    ctypes.windll.user32.keybd_event(vk_code, scan_code, 0, 0)
+
+
+def release_key(vk_code = VK):
+    scan_code = ctypes.windll.user32.MapVirtualKeyA(vk_code, 0)
+    ctypes.windll.user32.keybd_event(vk_code, scan_code, KEYEVENTF_KEYUP, 0)