From 067f23cc1996593ab50087cb881f73cff329278d Mon Sep 17 00:00:00 2001
From: Jonas Hahn <jonas@hahn1.one>
Date: Sun, 6 Sep 2026 15:27:31 +0200
Subject: [PATCH] add stats

---
 .gitignore |  1 +
 justfile   |  3 +++
 stats.py   | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 51 insertions(+)
 create mode 100644 stats.py

diff --git a/.gitignore b/.gitignore
index 98e6ef6..aa28b5b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 *.db
+__pycache__
diff --git a/justfile b/justfile
index d3be8aa..e86dd78 100644
--- a/justfile
+++ b/justfile
@@ -1,2 +1,5 @@
+stats:
+    python stats.py
+
 fetch:
     python fetch.py
diff --git a/stats.py b/stats.py
new file mode 100644
index 0000000..b935ca5
--- /dev/null
+++ b/stats.py
@@ -0,0 +1,47 @@
+import json
+import sqlite3
+from collections import Counter
+from datetime import date
+
+db = sqlite3.connect("mensa.db")
+
+rows = db.execute("""
+    SELECT date, title, category, type
+    FROM dishes
+    WHERE title != ''
+""").fetchall()
+
+meals = [title for _, title, _, _ in rows]
+vegan = [title for _, title, category, _ in rows if "vegan" in json.loads(category)]
+nds = [title for _, title, category, _ in rows if "NDS" in json.loads(category)]
+
+counts = Counter(meals)
+vegan_counts = Counter(vegan)
+nds_counts = Counter(nds)
+
+dates = [date.fromisoformat(d) for d, _, _, _ in rows]
+
+print(f"date range:     {min(dates)} → {max(dates)}")
+print(f"meals:          {len(meals)}")
+print(f"vegan meals:    {len(vegan)}")
+print(f"unique meals:   {len(counts)}")
+
+print("\ntop 5 most served:")
+for meal, count in counts.most_common(5):
+    print(f"  {count:3}x  {meal}")
+
+print("\ntop 5 vegan meals:")
+for meal, count in vegan_counts.most_common(5):
+    print(f"  {count:3}x  {meal}")
+
+print("\ntop 5 NDS menus:")
+for meal, count in nds_counts.most_common(5):
+    print(f"  {count:3}x  {meal}")
+
+print("\nmeals served only once:")
+for date_, meal, _, _ in rows:
+    if counts[meal] == 1:
+        days = (date.today() - date.fromisoformat(date_)).days
+        print(f"  {days:3} days ago  {date_}  {meal}")
+
+db.close()