Implemented database summary on index page

Closes #41

app.py

@@ -153,7 +153,22 @@ class BaseView(HTTPMethodView):
 
 @app.route('/')
 async def index(request, sql=None):
-    databases = ensure_build_metadata(True)
+    databases = []
+    for key, info in ensure_build_metadata(True).items():
+        database = {
+            'name': key,
+            'hash': info['hash'],
+            'path': '{}-{}'.format(key, info['hash'][:7]),
+            'tables_truncated': sorted(
+                info['tables'].items(),
+                key=lambda p: p[1],
+                reverse=True
+            )[:5],
+            'tables_count': len(info['tables'].items()),
+            'tables_more': len(info['tables'].items()) > 5,
+            'total_rows': sum(info['tables'].values()),
+        }
+        databases.append(database)
     return jinja.render(
         'index.html',
         request,

templates/database.html

@@ -5,6 +5,8 @@
 {% block content %}
 <h1>{{ database }}</h1>
 
+<p><a href="/{{ database }}-{{ database_hash }}.db">download {{ database }}.db</a></p>
+
 <style>
 td {
     vertical-align: top;

templates/index.html

@@ -3,9 +3,11 @@
 {% block title %}Databases{% endblock %}
 
 {% block content %}
-<h1>Database{% if databases.keys()|length != 1 %}s{% endif %}</h1>
-{% for name, info in databases.items() %}
-    <p><a href="{{ name}}-{{ info.hash|truncate(7, end='') }}">{{ name }}</a></p>
+<h1>Database{% if databases|length != 1 %}s{% endif %}</h1>
+{% for database in databases %}
+    <h2><a href="{{ database.path }}">{{ database.name }}</a></h2>
+    <p>{{ "{:,}".format(database.total_rows) }} rows in {{ database.tables_count }} table{% if database.tables_count != 1 %}s{% endif %}</p>
+    <p>{% for table, count in database.tables_truncated %}<a href="{{ database.path }}/{{ table }}" title="{{ count }} rows">{{ table }}</a>{% if not loop.last %}, {% endif %}{% endfor %}{% if database.tables_more %}, <a href="{{ database.path }}">...</a>{% endif %}</p>
 {% endfor %}
 
 {% endblock %}

templates/table.html

@@ -5,7 +5,7 @@
 {% block content %}
 <h1><a href="/{{ database }}-{{ database_hash }}">{{ database }}</a></h1>
 
-<h2>{{ table }}{% if total_rows != None %} ({{ total_rows }} total row{% if total_rows == 1 %}{% else %}s{% endif %} in this table){% endif %}</h2>
+<h2>{{ table }}{% if total_rows != None %} ({{ "{:,}".format(total_rows) }} total row{% if total_rows == 1 %}{% else %}s{% endif %} in this table){% endif %}</h2>
 
 <style>
 td {