Initial upload: git-insights-cli with CI/CD workflow

src/analyzers/velocity.py

@@ -0,0 +1,67 @@
+from dataclasses import dataclass
+from typing import Any, Dict, List, Optional
+
+from src.analyzers.git_repository import GitRepository
+from src.models.data_structures import VelocityAnalysis, Author
+
+
+@dataclass
+class VelocityAnalyzer:
+    """Analyzes team velocity."""
+
+    repo: GitRepository
+    days: int
+
+    def analyze(self) -> Optional[VelocityAnalysis]:
+        """Analyze team velocity."""
+        commits = self.repo.get_commits()
+
+        if not commits:
+            return None
+
+        authors = self.repo.get_authors()
+        authors.sort(key=lambda a: a.commit_count, reverse=True)
+        top_contributors = authors[:10]
+
+        commits_per_day = len(commits) / max(1, self.days)
+        commits_per_week = commits_per_day * 7
+        commits_per_month = commits_per_day * 30
+
+        commits_by_day: Dict[str, int] = {}
+        commits_by_hour: Dict[str, int] = {}
+
+        for commit in commits:
+            day_key = commit.timestamp.strftime("%A")
+            hour_key = commit.timestamp.strftime("%H:00")
+
+            commits_by_day[day_key] = commits_by_day.get(day_key, 0) + 1
+            commits_by_hour[hour_key] = commits_by_hour.get(hour_key, 0) + 1
+
+        most_active_day = max(commits_by_day, key=commits_by_day.get) if commits_by_day else "N/A"
+        most_active_hour = max(commits_by_hour, key=commits_by_hour.get) if commits_by_hour else "N/A"
+
+        if len(commits) >= 2:
+            recent_commits = commits[:10]
+            older_commits = commits[10:20]
+
+            recent_avg = sum(1 for _ in recent_commits) / max(1, len(recent_commits))
+            older_avg = sum(1 for _ in older_commits) / max(1, len(older_commits))
+
+            if recent_avg > older_avg * 1.1:
+                velocity_trend = "increasing"
+            elif recent_avg < older_avg * 0.9:
+                velocity_trend = "decreasing"
+            else:
+                velocity_trend = "stable"
+        else:
+            velocity_trend = "stable"
+
+        return VelocityAnalysis(
+            commits_per_day=commits_per_day,
+            commits_per_week=commits_per_week,
+            commits_per_month=commits_per_month,
+            velocity_trend=velocity_trend,
+            top_contributors=top_contributors,
+            most_active_day=most_active_day,
+            most_active_hour=most_active_hour,
+        )