Add ability to save and edit queries, still need to add ability to edit queries

app.py

@@ -471,17 +471,53 @@ def delete_exercise(exercise_id):
 
 @app.route("/sql_explorer", methods=['GET'])
 def sql_explorer():
+    saved_queries = db.sql_explorer.list_saved_queries()
     if htmx:
-        return render_block(app.jinja_env, 'sql_explorer.html', 'content')
-    return render_template('sql_explorer.html')
+        return render_block(app.jinja_env, 'sql_explorer.html', 'content', saved_queries=saved_queries)
+    return render_template('sql_explorer.html', saved_queries=saved_queries)
 
 @app.route("/sql_query", methods=['POST'])
 def sql_query():
     query = request.form.get('query')
-    (results, columns, error) = db.sql_explorer.execute_sql(query)
-    
-    return render_template('partials/sql_explorer/sql_query.html', query=query, results=results, columns=columns, error=error)
+    action = request.form.get('action')
+    title = request.form.get('title')
 
+    if action == 'execute':
+        (results, columns, error) = db.sql_explorer.execute_sql(query)
+        saved_queries = db.sql_explorer.list_saved_queries()
+        return render_template('partials/sql_explorer/sql_query.html', 
+            title=title,
+            query=query, 
+            results=results, 
+            columns=columns, 
+            error=error,
+            saved_queries=saved_queries)
+    else:
+        error = db.sql_explorer.save_query(title, query)
+        saved_queries = db.sql_explorer.list_saved_queries()
+        return render_template('partials/sql_explorer/sql_query.html',
+            title=title, 
+            query=query, 
+            error=error,
+            saved_queries=saved_queries)
+
+@app.route('/load_sql_query/<int:query_id>', methods=['GET'])
+def load_sql_query(query_id):
+    (title, query) = db.sql_explorer.get_saved_query(query_id)
+    saved_queries = db.sql_explorer.list_saved_queries()
+    return render_template('partials/sql_explorer/sql_query.html',
+        title=title, 
+        query=query, 
+        saved_queries=saved_queries)
+
+@app.route('/delete_sql_query/<int:query_id>', methods=['DELETE'])
+def delete_sql_query(query_id):
+    db.sql_explorer.delete_saved_query(query_id)
+    saved_queries = db.sql_explorer.list_saved_queries()
+    return render_template('partials/sql_explorer/sql_query.html',
+        title="", 
+        query="", 
+        saved_queries=saved_queries)
 
 
 @ app.route("/sql_schema", methods=['GET'])