added stats page

main.py

@@ -399,6 +399,34 @@ def book(id):
     book_s = book_schema.dump(book)
     return render_template("book.html", b=book, books=book_s, book_form=book_form, author_list=author_list, genre_list=genre_list, alert=alert, message=message, n=book_form.notes, poss_series_list=ListOfSeriesWithMissingBooks() )
 
+def GetCount( what, where ):
+    st="select count(id) as count from book where "
+    res=db.engine.execute( st + where )
+    rtn={}
+    for row in res:
+        rtn['stat']=what
+        rtn['value']=row['count']
+        return rtn
+
+@app.route("/stats", methods=["GET"])
+def stats():
+    stats=[]
+
+    stats.append( GetCount( "Num physical Books in DB", "id not in ( select sub_book_id from book_sub_book_link )" ) )
+    stats.append( GetCount( "Num physical Books owned (aka books on shelf)", "owned=(select id from owned where name = 'Currently Owned') and id not in ( select sub_book_id from book_sub_book_link )" ) )
+    stats.append( GetCount( "Num physical Books on Wish List", "owned=(select id from owned where name='On Wish List') and id not in ( select sub_book_id from book_sub_book_link )" ) )
+    stats.append( GetCount( "Num physical Books sold", "owned=(select id from owned where name='Sold') and id not in ( select sub_book_id from book_sub_book_link )" ) )
+
+    stats.append( GetCount( "Num all Books in DB", "id>0" ) )
+    stats.append( GetCount( "Num all Books owned", "owned in (select id from owned where name='Currently Owned')" ) )
+    stats.append( GetCount( "Num all Books on wish list", "owned in (select id from owned where name='On Wish List')" ) )
+    stats.append( GetCount( "Num all Books sold", "owned=(select id from owned where name='Sold')" ) )
+
+    stats.append( GetCount( "Num all owned Books unrated", "rating in (select id from rating where name in ('N/A', 'Undefined')) and owned = (select id from owned where name='Currently Owned')" ) )
+    stats.append( GetCount( "Num all Books unrated", "rating in (select id from rating where name in ('N/A', 'Undefined'))" ) )
+    return render_template("stats.html", stats=stats )
+
+
 @app.route("/", methods=["GET"])
 def main_page():
     return render_template("base.html")

templates/base.html

@@ -26,6 +26,7 @@
 					<div class="dropdown-menu" aria-labelledby="BookMenu">
 						<a class="dropdown-item" href="{{url_for('books')}}">Create</a>
 						<a class="dropdown-item" href="{{url_for('books')}}">Show All</a>
+						<a class="dropdown-item" href="{{url_for('stats')}}">Show Stats</a>
 					</div>
 				</div class="nav-item dropdown">
 				<div class="nav-item dropdown">

templates/stats.html

@@ -0,0 +1,15 @@
+{% extends "base.html" %}
+
+{% block main_content %}
+<h3>Stats</h3>
+<table id="stats_table" class="table table-striped table-sm" data-toolbar="#toolbar" data-search="true">
+	<thead>
+		<tr class="thead-light"><th>Statistic</th><th>Value</th></tr>
+	</thead>
+	<tbody>
+	{% for s in stats %}
+		<tr><td>{{s.stat}}</td><td>{{s.value}}</tr>
+	{% endfor %}
+	</tbody>
+</table>
+{% endblock main_content %}