fix: add analyzer modules

src/analyzers/velocity.py

@@ -1,77 +1,67 @@
-from collections import defaultdict
-from typing import Dict
+from dataclasses import dataclass
+from typing import Dict, Optional
 
 from src.analyzers.git_repository import GitRepository
-from src.models import VelocityAnalysis
+from src.models.data_structures import VelocityAnalysis
 
 
+@dataclass
 class VelocityAnalyzer:
-    """Analyze development velocity and productivity."""
+    """Analyzes team velocity."""
 
-    def __init__(
-        self,
-        repo: GitRepository,
-        days: int = 30,
-    ) -> None:
-        """Initialize VelocityAnalyzer."""
-        self.repo = repo
-        self.days = days
+    repo: GitRepository
+    days: int
 
-    def analyze(self) -> VelocityAnalysis:
-        """Analyze velocity metrics."""
-        commits = self.repo.get_commits(since_days=self.days)
+    def analyze(self) -> Optional[VelocityAnalysis]:
+        """Analyze team velocity."""
+        commits = self.repo.get_commits()
 
         if not commits:
-            return VelocityAnalysis()
+            return None
 
-        total_commits = len(commits)
-        commits_per_day = total_commits / max(self.days, 1)
-        commits_per_week = total_commits / max(self.days / 7, 1)
+        authors = self.repo.get_authors()
+        authors.sort(key=lambda a: a.commit_count, reverse=True)
+        top_contributors = authors[:10]
 
-        daily_totals = defaultdict(int)
-        weekly_totals = defaultdict(int)
+        commits_per_day = len(commits) / max(1, self.days)
+        commits_per_week = commits_per_day * 7
+        commits_per_month = commits_per_day * 30
 
-        day_counts = defaultdict(int)
-        hour_counts = defaultdict(int)
+        commits_by_day: Dict[str, int] = {}
+        commits_by_hour: Dict[str, int] = {}
 
         for commit in commits:
-            day_key = commit.author_datetime.strftime("%Y-%m-%d")
-            week_key = commit.author_datetime.strftime("%Y-W%W")
-            day_name = commit.author_datetime.strftime("%A")
-            hour = commit.author_datetime.strftime("%H:00")
+            day_key = commit.timestamp.strftime("%A")
+            hour_key = commit.timestamp.strftime("%H:00")
 
-            daily_totals[day_key] += 1
-            weekly_totals[week_key] += 1
-            day_counts[day_name] += 1
-            hour_counts[hour] += 1
+            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(day_counts, key=day_counts.get) if day_counts else ""
-        most_active_hour = max(hour_counts, key=hour_counts.get) if hour_counts else ""
+        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(weekly_totals) >= 2:
-            weeks = sorted(weekly_totals.keys())
-            recent_weeks = weeks[-2:]
-            if len(recent_weeks) == 2:
-                current = weekly_totals[recent_weeks[1]]
-                previous = weekly_totals[recent_weeks[0]]
-                if current > previous:
+        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 current < previous:
+            elif recent_avg < older_avg * 0.9:
                 velocity_trend = "decreasing"
             else:
                 velocity_trend = "stable"
         else:
             velocity_trend = "stable"
-        else:
-            velocity_trend = "stable"
 
         return VelocityAnalysis(
-            total_commits=total_commits,
-            commits_per_day=round(commits_per_day, 2),
-            commits_per_week=round(commits_per_week, 2),
+            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,
-            weekly_totals=dict(weekly_totals),
-            daily_totals=dict(daily_totals),
         )