fixes #4 - adds modular analyses system using plugins

app/analysis/plot_bar_peak_hours.py

@@ -0,0 +1,31 @@
+import os
+import pandas as pd
+import matplotlib.pyplot as plt
+import seaborn as sns
+from .basePlotAnalysis import BasePlotAnalysis
+from flask import current_app, url_for
+
+import matplotlib
+matplotlib.use('Agg')
+
+class PlotPeakHours(BasePlotAnalysis):
+    name = "Peak Hours Analysis"
+    description = "Identifies peak activity hours using a bar chart."
+    plot_filename = "peak_hours.png"
+    note = ""
+
+    def transform_data(self, df: pd.DataFrame) -> pd.DataFrame:
+        """Transform data to add was_active column and extract peak hours"""
+        return df
+
+    def plot_data(self, df: pd.DataFrame):
+        """Generate bar chart for peak hours"""
+        peak_hours = df[df["was_active"]]["hour"].value_counts().sort_index()
+
+        plt.figure(figsize=(12, 5))
+        sns.barplot(x=peak_hours.index, y=peak_hours.values, hue=peak_hours.values, palette="coolwarm")
+
+        plt.xlabel("Hour of the Day")
+        plt.ylabel("Activity Count")
+        plt.title("Peak Hours of User Activity")
+        plt.xticks(range(0, 24))