From b7f285f2b866366cff49d49ccfb49a40c62cb0e3 Mon Sep 17 00:00:00 2001
From: hmj6502 <hashim@hmj6502.com>
Date: Thu, 18 Dec 2025 21:54:49 +0000
Subject: add basic rendering

display each day as a seperate svg; each a bar chart of tags of that day
---
 display.py    | 24 ++++++++++++++++++++++++
 formatting.py | 22 ++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 display.py

diff --git a/display.py b/display.py
new file mode 100644
index 0000000..e5b9bda
--- /dev/null
+++ b/display.py
@@ -0,0 +1,24 @@
+# displays stats as graph. assumes csv is in chronological order, with no
+# overlapping sessions. as initial test: make a bar chart for time spent per
+# tag, for every day
+import pygal
+import csv
+import argparse
+from collections import OrderedDict
+import formatting as f
+
+parser = argparse.ArgumentParser()
+parser.add_argument("logfile", help="log file to display chart of",
+                    type=argparse.FileType('r'))
+args = parser.parse_args()
+
+day_times = f.per_tag_per_day(args.logfile)
+print(day_times)
+
+for day in day_times:
+    chart = pygal.Bar()
+    for key, value in day.items():
+        if key == "date":
+            continue
+        chart.add(key, value)
+    chart.render_to_file(str(day["date"]+".svg"))
diff --git a/formatting.py b/formatting.py
index a7c7ed7..5002ee9 100644
--- a/formatting.py
+++ b/formatting.py
@@ -22,3 +22,25 @@ def sess_to_log(session, filename):
         if logmode == 'w':
             writer.writeheader()
         writer.writerow(session)
+
+def per_tag_per_day(file):
+    """returns list of dicts, each has date, tag and time spent per tag"""
+    reader = csv.DictReader(file)
+
+    rows = [] # need to make into list to transverse backwards
+    for row in reader:
+        rows.append(row)
+
+# list of dicts; each dict is tag: time_spent
+    day_times = []
+    cur = -1
+    for i in range(len(rows)):
+        date = rows[i]['date']
+        tag = rows[i]['tag']
+        if i > 0 and date == rows[i-1]['date']:
+            day_times[cur][tag] = day_times[cur].get(tag, 0) + int(rows[i]['elapsed'])
+        else:
+            cur += 1
+            day_times.append({"date": date, tag: int(rows[i]['elapsed'])})
+
+    return day_times
-- 
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