added features.

.env.example

@@ -0,0 +1,2 @@
+url = https://discord.com/api/webhooks/...
+hostname = your.domain.tld:port

.gitignore

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+*.json
+.env
+.vscode/
+!.vscode/extensions.json
+*.code-workspace

README.md

@@ -1,3 +1,3 @@
 # mss-webhooksu
 
-Discord webhook that pings you.
+Discord webhook that pings you when someone joins or leaves a minecraft server.

main.py

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+import json
+import requests
+from dotenv import dotenv_values
+
+config = dotenv_values(".env")
+
+WEBHOOK_URL = config["url"]
+HOSTNAME = config["hostname"]
+
+STATUS_FILE = "previous_status.json" # could get it from the .env, but it's not secret information so :shrug:
+
+with open(STATUS_FILE, "r") as file:
+    previous_status = json.load(file)
+
+try:
+    response = requests.get(
+        f"https://api.mcsrvstat.us/3/{HOSTNAME}",
+        timeout=10
+    )
+    response.raise_for_status()
+    server_status = response.json()
+except requests.RequestException as e:
+    print(f"Failed to get server status: {e}")
+    exit(1)
+
+previous_players_data = previous_status.get("players", {})
+current_players_data = server_status.get("players", {})
+
+previous_online = previous_players_data.get("online", 0)
+current_online = current_players_data.get("online", 0)
+
+previous_max = previous_players_data.get("max", 0)
+current_max = current_players_data.get("max", 0)
+
+previous_player_list = {
+    player["name"]
+    for player in previous_players_data.get("list", [])
+}
+
+current_player_list = {
+    player["name"]
+    for player in current_players_data.get("list", [])
+}
+
+if (
+    previous_online == current_online
+    and previous_player_list == current_player_list
+):
+    print("nothing changed.")
+    exit()
+
+
+if current_online > previous_online:
+    pc_diff_sign = "+"
+elif current_online < previous_online:
+    pc_diff_sign = "-"
+else:
+    pc_diff_sign = " "
+
+
+if previous_online != current_online:
+    pc_diff_previously = f"(previously {previous_online})"
+else:
+    pc_diff_previously = ""
+
+
+playercount_diff_formatted = (
+    f"{pc_diff_sign} {current_online}/{current_max} "
+    f"{pc_diff_previously}"
+)
+
+
+joined_players = current_player_list - previous_player_list
+left_players = previous_player_list - current_player_list
+
+player_diff = []
+
+for player in sorted(current_player_list):
+    if player in joined_players:
+        player_diff.append(f"+ {player}")
+    else:
+        player_diff.append(f"  {player}")
+
+for player in sorted(left_players):
+    player_diff.append(f"- {player}")
+
+player_diff_formatted = "\n".join(player_diff) or "  no one is here."
+
+
+payload = {
+    "content": f"""---
+# status changed on {HOSTNAME}
+
+```diff
+{playercount_diff_formatted}
+```
+
+```diff
+{player_diff_formatted}
+```
+"""
+}
+
+
+try:
+    response = requests.post(
+        WEBHOOK_URL,
+        json=payload,
+        timeout=10
+    )
+    response.raise_for_status()
+except requests.RequestException as e:
+    print(f"failed to send webhook: {e}")
+    exit(1)
+
+
+print("success")
+
+
+with open(STATUS_FILE, "w") as file:
+    json.dump(server_status, file, indent=2)