add settings page for usage stats config

app/settings/forms.py

@@ -53,3 +53,9 @@ class EmailSettings(FlaskForm):
     username = StringField("User name:")
     password = PasswordField("Password:")
     submit = SubmitField("Save changes and send test email")
+
+
+class UsageStatsSettings(FlaskForm):
+    key = StringField("Key:", validators=[DataRequired()], render_kw={"readonly": True})
+    site = StringField("Site name:", validators=[DataRequired()])
+    submit = SubmitField("Save changes")

app/settings/views.py

@@ -4,7 +4,7 @@
 from flask_login import current_user, login_required
 
 from . import settings
-from .forms import NewSMBResourceForm, NewUserForm, EmailSettings
+from .forms import NewSMBResourceForm, NewUserForm, EmailSettings, UsageStatsSettings
 from .. import db
 from ..decorators import admin_required
 from ..emailing import send_mail, read_mailconfig, write_mailconfig
@@ -110,6 +110,27 @@ def email():
     return render_template("settings/email.html", form=form)
 
 
+@settings.route("/stats", methods=["GET", "POST"])
+@login_required
+@admin_required
+def stats():
+    form = UsageStatsSettings()
+    if form.validate_on_submit():
+        with open("data/usage_stats_site", "w") as f:
+            f.write(form.site.data)
+        flash("Saved changes")
+
+    try:
+        with open("data/usage_stats_key") as f:
+            form.key.data = f.read()
+        with open("data/usage_stats_site") as f:
+            form.site.data = f.read()
+    except Exception:
+        pass
+
+    return render_template("settings/stats.html", form=form)
+
+
 # ----- two helper functions for the settings/uploads page
 def handle_img(loc, src, refdlist):
     if src[:15] == "/browser/ulimg/":

app/templates/settings/base.html

@@ -10,6 +10,7 @@
             {{ me.menu_entry("uploads", "Uploads", active) }}
         {% endif %}
         {{ me.menu_entry("email", "Email", active) }}
+        {{ me.menu_entry("stats", "Usage stats", active) }}
         {{ me.menu_entry("log", "Log", active) }}
     </ul>
 </div>

app/templates/settings/stats.html

@@ -0,0 +1,13 @@
+{% set active = "stats" %}
+{% extends "settings/base.html" %}
+{% import "util/wtf.html" as wtf %}
+
+{% block page_content %}
+<h3 class="page-header">Usage stats</h3>
+<form method="POST">
+    {{ form.hidden_tag() }}
+    {{ wtf.form_field(form.key) }}
+    {{ wtf.form_field(form.site) }}
+    {{ wtf.form_field(form.submit) }}
+</form>
+{% endblock %}