Add ability to plot saved queries using plotly, need to check performance in production, also need to improve generate_plot function

app.py

@@ -7,7 +7,7 @@ import jinja_partials
 from jinja2_fragments import render_block
 from decorators import validate_person, validate_topset, validate_workout
 from db import DataBase
-from utils import count_prs_over_time, get_people_and_exercise_rep_maxes, convert_str_to_date, get_earliest_and_latest_workout_date, filter_workout_topsets, first_and_last_visible_days_in_month, get_weekly_pr_graph_model, get_workout_counts
+from utils import count_prs_over_time, get_people_and_exercise_rep_maxes, convert_str_to_date, get_earliest_and_latest_workout_date, filter_workout_topsets, first_and_last_visible_days_in_month, get_weekly_pr_graph_model, get_workout_counts, generate_plot
 from flask_htmx import HTMX
 import minify_html
 from urllib.parse import quote
@@ -526,6 +526,14 @@ def sql_schema():
     mermaid_code = db.sql_explorer.generate_mermaid_er(schema_info)
     return render_template('partials/sql_explorer/schema.html', mermaid_code=mermaid_code)
 
+@app.route("/plot/<int:query_id>", methods=['GET'])
+def plot_query(query_id):
+    (title, query) = db.sql_explorer.get_saved_query(query_id)
+    #(results, columns, error) = db.sql_explorer.execute_sql(query)
+    results_df = db.read_sql_as_df(query)
+    plot_div = generate_plot(results_df, title)
+    return plot_div
+
 @app.teardown_appcontext
 def closeConnection(exception):
     db.close_connection()

db.py

@@ -6,6 +6,7 @@ from datetime import datetime
 from dateutil.relativedelta import relativedelta
 from urllib.parse import urlparse
 from flask import g
+import pandas as pd
 from features.calendar import Calendar
 from features.exercises import Exercises
 from features.stats import Stats
@@ -61,6 +62,14 @@ class DataBase():
 
         return (rv[0] if rv else None) if one else rv
     
+    def read_sql_as_df(self, query, params=None):
+        conn = self.getDB()
+        try:
+            df = pd.read_sql(query, conn, params=params)
+            return df
+        except Exception as e:
+            raise e
+
     def get_exercise(self, exercise_id):
         exercise = self.execute(
             'SELECT exercise_id, name FROM exercise WHERE exercise_id=%s LIMIT 1', [exercise_id], one=True)

requirements.txt

@@ -11,3 +11,4 @@ Werkzeug==2.2.2
 numpy==1.19.5
 pandas==1.3.1
 python-dotenv==1.0.1
+plotly==5.24.1

templates/partials/sql_explorer/sql_query.html

@@ -94,22 +94,36 @@
                 <tbody>
                     {% for saved in saved_queries %}
                     <tr class="hover:bg-gray-100 transition-colors duration-200">
-                        <td class="py-4 px-6 border-b">{{ saved.title }}</td>
+                        <!-- Query Title as Load Action -->
+                        <td class="py-4 px-6 border-b">
+                            <a href="#" hx-get="{{ url_for('load_sql_query', query_id=saved.id) }}"
+                                hx-target="#sql-query"
+                                class="flex items-center text-blue-500 hover:text-blue-700 cursor-pointer">
+                                <!-- Load Icon (Heroicon: Eye) -->
+                                <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5 mr-2" fill="none"
+                                    viewBox="0 0 24 24" stroke="currentColor">
+                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
+                                        d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
+                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
+                                        d="M2.458 12C3.732 7.943 7.523 5 12 5c4.477 0 8.268 2.943 9.542 7-1.274 4.057-5.065 7-9.542 7-4.477 0-8.268-2.943-9.542-7z" />
+                                </svg>
+                                {{ saved.title }}
+                            </a>
+                        </td>
                         <td class="py-4 px-6 border-b">
                             <div class="flex space-x-4">
-                                <!-- Load Action -->
+                                <!-- Plot Action -->
-                                <a href="#" hx-get="{{ url_for('load_sql_query', query_id=saved.id) }}"
+                                <a href="#" hx-get="{{ url_for('plot_query', query_id=saved.id) }}"
-                                    hx-target="#sql-query"
+                                    hx-target="#sql-plot-results"
-                                    class="flex items-center text-blue-500 hover:text-blue-700 cursor-pointer">
+                                    class="flex items-center text-green-500 hover:text-green-700 cursor-pointer"
-                                    <!-- Load Icon (Heroicon: Eye) -->
+                                    hx-trigger="click">
+                                    <!-- Plot Icon (Heroicon: Chart Bar) -->
                                     <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5 mr-1" fill="none"
                                         viewBox="0 0 24 24" stroke="currentColor">
                                         <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
-                                            d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
+                                            d="M3 3h2l.4 2M7 13h10l4-8H5.4M7 13L5.4 5M7 13l-2 9m5-9v9m4-9v9m5-9v9" />
-                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2"
-                                            d="M2.458 12C3.732 7.943 7.523 5 12 5c4.477 0 8.268 2.943 9.542 7-1.274 4.057-5.065 7-9.542 7-4.477 0-8.268-2.943-9.542-7z" />
                                     </svg>
-                                    Load
+                                    Plot
                                 </a>
 
                                 <!-- Delete Action -->
@@ -137,5 +151,10 @@
         {% endif %}
     </div>
 
+    <!-- Plot Results Section -->
+    <div id="sql-plot-results" class="mt-8">
+        <!-- Plot will be loaded here via htmx -->
+    </div>
+
 
 </div>

utils.py

@@ -2,6 +2,8 @@ import colorsys
 from datetime import datetime, date, timedelta
 import numpy as np
 import pandas as pd
+import plotly.express as px
+import plotly.io as pio
 
 def get_workouts(topsets):
     # Ensure all entries have 'WorkoutId' and 'TopSetId', then sort by 'WorkoutId' and 'TopSetId'
@@ -440,3 +442,36 @@ def get_distinct_colors(n):
         hex_color = '#{:02x}{:02x}{:02x}'.format(int(rgb[0]*255), int(rgb[1]*255), int(rgb[2]*255))
         colors.append(hex_color)
     return colors
+
+def generate_plot(df, title):
+    """
+    Analyzes the DataFrame and generates an appropriate Plotly visualization.
+    Returns the Plotly figure as a div string.
+    """
+    if df.empty:
+        return "<p>No data available to plot.</p>"
+
+    num_columns = len(df.columns)
+
+    # Simple logic to decide plot type based on DataFrame structure
+    if num_columns == 1:
+        # Single column: perhaps a histogram or bar chart
+        column = df.columns[0]
+        if pd.api.types.is_numeric_dtype(df[column]):
+            fig = px.histogram(df, x=column, title=title)
+        else:
+            fig = px.bar(df, x=column, title=title)
+    elif num_columns == 2:
+        # Two columns: scatter plot or line chart
+        col1, col2 = df.columns
+        if pd.api.types.is_numeric_dtype(df[col1]) and pd.api.types.is_numeric_dtype(df[col2]):
+            fig = px.scatter(df, x=col1, y=col2, title=title)
+        else:
+            fig = px.bar(df, x=col1, y=col2, title=title)
+    else:
+        # More than two columns: heatmap or other complex plots
+        fig = px.imshow(df.corr(), text_auto=True, title=title)
+
+    # Convert Plotly figure to HTML div
+    plot_div = pio.to_html(fig, full_html=False)
+    return plot_div