first commit

main.py

@@ -0,0 +1,72 @@
+from nicegui import ui 
+import sqlite3
+import signal
+import os
+
+
+
+
+def dict_factory(cursor, row):
+    d = {}
+    for idx, col in enumerate(cursor.description):
+        d[col[0]] = row[idx]
+    return d
+
+def read_data(query):
+    try:
+        cursor.execute(query)
+        rows = cursor.fetchall()
+        return rows
+    except sqlite3.Error as e:
+        ui.notify("{e}")
+        return None
+
+def registra_presenza(id, flag):
+    
+    try:
+        cursor.execute("UPDATE users SET presenze = ? WHERE id = ?", (1 if flag==True  else 0, id) ) 
+        conn.commit()
+        
+    finally:
+        tabellaUtenti.refresh()
+        os.kill(os.getpid(), signal.SIGUSR1)
+
+@ui.refreshable
+def tabellaUtenti():
+    rows = read_data("SELECT u.*, (SELECT data FROM pagamenti WHERE user_id=u.id AND date(data) = '2021-05-31' ORDER BY id DESC LIMIT 1) as pagamenti FROM users as u;")
+    for row in rows:
+        with ui.row().classes("w-full"):
+            with ui.column().classes("grow"):
+                ui.label(f"{row['nome']} {row['cognome'][0].upper()}.").style('color:'+("black" if row['pagamenti'] else "red"))
+            with ui.column():
+                if row["presenze"] == 1:
+                    ui.button(color="primary", text= "presente", on_click= lambda: registra_presenza(row["id"], False))
+                else:
+                    ui.button(color="secondary", text= "assente", on_click= lambda: registra_presenza(row["id"], True))
+
+        ui.separator()  
+
+def onSignal(signum, frame):
+    tabellaUtenti.refresh()
+
+signal.signal(signal.SIGUSR1, onSignal)
+
+# START
+
+conn = sqlite3.connect('letsswing.db')
+conn.row_factory = dict_factory
+cursor = conn.cursor()
+
+
+
+with ui.row().classes("w-full"):
+    with ui.column().classes("grow"):
+        ui.label("Beginner a matera")
+    with ui.column():
+        ui.icon("thumb_up")    
+
+tabellaUtenti()
+
+
+ui.run(host="0.0.0.0")
+