feat(cloud): add notifications for upcoming botb battles

hosts/cloud/botb_battles.py

@@ -0,0 +1,44 @@
+# Simple script to notify me about new BotB battles
+
+from datetime import datetime, timedelta
+import requests, time
+
+NTFY_TOPIC = "botb_upcoming_battles144"
+
+def get_adjusted_time(x):
+    x = datetime.fromisoformat(x)
+    x += timedelta(hours=15) # Adjust to UTC+7
+    return x
+
+def ntfy_send(text):
+    print(f"Sent: \"{text}\"")
+    resp = requests.post(f"https://ntfy.sh/{NTFY_TOPIC}", data = text.encode(encoding="utf-8"))
+    if resp.status_code != 200:
+        print(resp.json())
+
+sent_battles = []
+sent_battles_ids = set()
+
+while True:
+    battles = requests.get("https://battleofthebits.com/api/v1/battle/current").json()
+    battles = [x for x in battles if x["period"] == "warmup"]
+
+    for battle in battles:
+        if battle["id"] in sent_battles_ids:
+            continue
+
+        title = battle["title"]
+        start_time = get_adjusted_time(battle["start"]).strftime("%H:%M %d.%m")
+
+        ntfy_send(f"{title} ({start_time})")
+
+        sent_battles.append(battle)
+        sent_battles_ids.add(battle["id"])
+
+    time.sleep(3600) # 1h
+
+    # Collect garbage battles
+    for battle in sent_battles:
+        if get_adjusted_time(battle["start"]) > datetime.now():
+            sent_battles.remove(battle)
+            sent_battles_ids.remove(battle["id"])

hosts/cloud/default.nix

@@ -1,4 +1,4 @@
-{ ... }: {
+{ pkgs, ... }: {
   modules.server = {
     enable = true;
 
@@ -49,5 +49,15 @@
     };
   };
 
+  systemd.user.services.botb-battles = {
+    enable = true;
+    after = [ "network.target" ];
+    wantedBy = [ "default.target" ];
+    serviceConfig = {
+        Type = "simple";
+        ExecStart = ''${pkgs.python3} ${./botb_battles.py}'';
+    };
+  };
+
   system.stateVersion = "24.05";
 }