added removetag and sessionids

main.py

@@ -1,10 +1,11 @@
 import queue
-from flask import Flask, render_template, request, make_response, flash
+from flask import Flask, render_template, request, make_response, session
 from flask_socketio import SocketIO #https://pythonprogramminglanguage.com/python-flask-websocket/
 import sqlite3
 import time
 import atexit
 import sys
+import uuid
 
 db_path = 'mate.db'
 conn = sqlite3.connect(db_path, check_same_thread=False)
@@ -43,7 +44,7 @@ def user_info():
     user = c.fetchall()
     if user != []:
         user = user[0]
-        return f'<p>{user[1]}: {user[2]} <form action="/addtag" method="get"><input name="id" type="hidden" value="{user[0]}"><button type="submit">Add Tag</button></form><form action="/change" method="get"><input name="id" type="hidden" value="{user[0]}"> Change balance: <input name="change"><input type="submit"></form></p>'
+        return f'<p>{user[1]}: {user[2]} <p><form action="/addtag" method="get"><input name="id" type="hidden" value="{user[0]}"><button type="submit">Add Tag</button></form><form action="/removetags" method="get"><input name="id" type="hidden" value="{user[0]}"><button type="submit">Remove Tag</button></form></p><form action="/change" method="get"><input name="id" type="hidden" value="{user[0]}"> Change balance: <input name="change"><input type="submit"></form></p>'
     else:
         return "User does not exists"
 
@@ -90,7 +91,9 @@ def get_addtag_request():
         user_id = int(request.args.get("id"))
     except:  #except im Normalen Code!
         return "Wrong user id!"
-    users.put(user_id)
+    session_id = uuid.uuid4()
+    session[id] = session_id
+    users.put([user_id, "add", session_id])
     return render_template("addtag.html", user=user_id)
 
 @socketio.on('addtag')
@@ -98,10 +101,10 @@ def request_addtag(data):
     global finished
     if len(users.queue) > 0:
         user = users.queue[len(users.queue) - 1]
-        if user == data["data"]:
+        if user == [data["data"], "add", session[id]]:
             socketio.emit("wait", "wait")
             i = 0
-            while finished != data["data"]:
+            while finished != [data["data"], "add", session[id]]:
                 time.sleep(1)
                 i += 1
                 if i > 20:
@@ -120,6 +123,45 @@ def request_addtag(data):
     else:
         socketio.emit("error", "error")
 
+@app.route("/removetag", methods=['GET'])
+def get_addtag_request():
+    global users 
+    try:
+        user_id = int(request.args.get("id"))
+    except:  #except im Normalen Code!
+        return "Wrong user id!"
+    session_id = uuid.uuid4()
+    session[id] = session_id
+    users.put([user_id, "remove"])
+    return render_template("removetag.html", user=user_id)
+
+@socketio.on('removetag')
+def request_addtag(data):
+    global finished
+    if len(users.queue) > 0:
+        user = users.queue[len(users.queue) - 1]
+        if user == [data["data"], "remove", session[id]]:
+            socketio.emit("wait", "wait")
+            i = 0
+            while finished != [data["data"], "remove", session[id]]:
+                time.sleep(1)
+                i += 1
+                if i > 20:
+                    socketio.emit("error", "timeout")
+                    notimportant = users.get()
+                    break
+            else:
+                finished = None
+                c.execute(f"SELECT * FROM users WHERE id ={user}")
+                username = c.fetchall()[0][1]
+                c.execute(f"SELECT * FROM tags WHERE userid={user}")
+                tag_id = c.fetchall()[0][0]
+                socketio.emit("finished", f"removed {tag_id} from {username}")
+        else:
+            socketio.emit("busy", "busy")
+    else:
+        socketio.emit("error", "error")
+
 #api
 @app.route("/api/tag_id", methods=['GET'])
 def get_id():
@@ -136,10 +178,15 @@ def get_id():
             return make_response("True")
 
     elif users.qsize() > 0:
-        user = users.get()
-        c.execute(f"INSERT OR IGNORE INTO tags (tagid, userid) VALUES ({tag_id}, {user})")
+        queue_item = users.get()
+        user = queue_item[0]
+        state = queue_item[1]
+        if state == "add":
+            c.execute(f"INSERT OR IGNORE INTO tags (tagid, userid) VALUES ({tag_id}, {user})")
+        elif state == "remove":
+            c.execute(f"DELETE FROM tags WHERE (tagid = {tag_id} AND userid = {user}) ")
         conn.commit()
-        finished = user
+        finished = queue_item
         return make_response("True")
 
     return make_response("False")