Show actual bug state changes

build.py

@@ -64,19 +64,18 @@ def get_all_bugs() -> list[Bug]:
     return all_bugs
 
 
-def parse_date(date_str: str | None) -> date | None:
+def parse_date(date_str: str | None) -> datetime | None:
     """Parse a date string with timezone information."""
     if date_str is None:
         return None
 
     fmt = "%Y-%m-%dT%H:%M:%SZ" if date_str.endswith("Z") else "%Y-%m-%dT%H:%M:%S%z"
-    return datetime.strptime(date_str, fmt).astimezone(pytz.utc).date()
+    return datetime.strptime(date_str, fmt).astimezone(pytz.utc)
 
 
 def count_open_bugs(bug_reports: list[Bug]) -> list[tuple[str, int]]:
     """Count the number of open bugs for each date based on a list of bug reports."""
-    open_dates: Counter[date] = Counter()
-    close_dates: Counter[date] = Counter()
+    dates: list[tuple[datetime, int]] = []
 
     # Process each bug report
     seen: set[int] = set()
@@ -86,25 +85,19 @@ def count_open_bugs(bug_reports: list[Bug]) -> list[tuple[str, int]]:
         seen.add(report["id"])
         open_date = parse_date(report["created_at"])
         assert open_date
-        open_dates[open_date] += 1
+        dates.append((open_date, 1))
 
         close_date = parse_date(report["closed_at"])
         if close_date:
-            close_dates[close_date] += 1
+            dates.append((close_date, -1))
 
-    # Create a date range from the earliest open date to the latest close date
-    start_date = min(open_dates.keys())
-    end_date = max(close_dates.keys(), default=start_date)
-    delta = end_date - start_date
-
-    # Count open bugs for each date
-    open_bug_count = 0
+    dates.sort()
+    bug_count = 0
     open_bugs_over_time = []
-    for i in range(delta.days + 1):
-        current_date = start_date + timedelta(days=i)
-        open_bug_count += open_dates.get(current_date, 0)
-        open_bug_count -= close_dates.get(current_date, 0)
-        open_bugs_over_time.append((current_date.isoformat(), open_bug_count))
+    for dt, delta in dates:
+        bug_count += delta
+        iso_date = dt.isoformat()
+        open_bugs_over_time.append((iso_date, bug_count))
 
     return open_bugs_over_time
 

template.html

@@ -35,11 +35,7 @@ document.addEventListener('DOMContentLoaded', function () {
             scales: {
                 x: {
                     type: 'time',
-                    time: {
-                        parser: 'yyyy-MM-dd',
-                        unit: 'month',
-                        // displayFormats: {'month': 'MMM yyyy'}
-                    }
+                    time: {unit: 'month'}
                 },
                 y: {
                     ticks: {