administration view added, flash msg fixed, access level custom decorator added

app/app/__init__.py

@@ -11,4 +11,5 @@ else:
 mail = Mail(app)
 
 from app import views
+from app import views_admin
 from app.helpers import maintainer

app/app/dao/misc/misc.py

@@ -13,6 +13,7 @@ def get_user_data_count(cur, username):
     for a in apps:
         devs.append(dd.get_list(a[1])[1])
     
+    if apps != [] and devs != []:
         query = 'WITH t AS ('
         i = 0
         for a in apps:
@@ -25,6 +26,8 @@ def get_user_data_count(cur, username):
         cur.execute(query, ())
         
         return (True,cur.fetchone())
+    else:
+        return (True,(0,))
 
 
 @with_psql
@@ -35,6 +38,7 @@ def get_user_data_count_per_hour(cur, username, hour):
     for a in apps:
         devs.append(dd.get_list(a[1])[1])
 
+    if apps != [] and devs != []:
         utc_hour = utc_roundhour(hour)
 
         query = 'WITH t AS ('
@@ -50,6 +54,8 @@ def get_user_data_count_per_hour(cur, username, hour):
         cur.execute(query, ())
         
         return (True,cur.fetchone())
+    else:
+        return (True, (0,))
 
 
 @with_psql
@@ -62,6 +68,7 @@ def get_user_data_count_per_hour_period(cur, username, period):
 
     utc_hour = [utc_roundhour(x) for x in range(period,-1,-1)]
 
+    if apps != [] and devs != []:
         query = 'WITH t AS ('
         i = 0
         for a in apps:
@@ -78,6 +85,9 @@ def get_user_data_count_per_hour_period(cur, username, period):
         cur.execute(query, ())
         
         return (True,cur.fetchall())
+    else:
+        return (True, (0,))
+
 
 
 @with_psql
@@ -88,6 +98,7 @@ def get_user_data_count_per_day(cur, username, day=0):
     for a in apps:
         devs.append(dd.get_list(a[1])[1])
 
+    if apps != [] and devs != []:
         utc_day = utc_roundday(day)
 
         query = 'WITH t AS ('
@@ -102,6 +113,8 @@ def get_user_data_count_per_day(cur, username, day=0):
         cur.execute(query, ())
         
         return (True,cur.fetchone())
+    else:
+        return (True, (0,))
 
 
 @with_psql
@@ -112,6 +125,7 @@ def get_user_data_count_per_day_period(cur, username, period):
     for a in apps:
         devs.append(dd.get_list(a[1])[1])
 
+    if apps != [] and devs != []:
         utc_hour = [utc_roundday(x) for x in range(period,-1,-1)]
 
         query = 'WITH t AS ('
@@ -130,6 +144,8 @@ def get_user_data_count_per_day_period(cur, username, period):
         cur.execute(query, ())
         
         return (True,cur.fetchall())
+    else:
+        return (True, (0,))
 
 
 @with_psql

app/app/helpers/misc.py

 from app import app
+from flask import session,flash,redirect,url_for
 from binascii import hexlify
 import os
 import psycopg2
 import binascii
 from datetime import datetime
+from functools import wraps
 
 def rand_str(length):
     if length % 2 == 0:
@@ -75,6 +77,19 @@ def with_psql(f):
         return res
     return _with_psql
 
+
+def restricted(access_level):
+    def user_control(f):
+        @wraps(f)
+        def decorated_function(*args, **kwargs):
+            if 'role' in session and session['role'] != access_level:
+                flash('Access level "{}" required for this page.'.format(access_level), 'danger')
+                return redirect(url_for('index'))
+            return f(*args, **kwargs)
+        return decorated_function
+    return user_control
+
+
 def clean_data_folder():
     try:
         filelist = [f for f in os.listdir(app.config['DATA_DOWNLOAD_DIR_OS'])]

app/app/templates/logged_layout.html

@@ -172,7 +172,7 @@
 {% with messages = get_flashed_messages(with_categories=true) %}
 	{% if messages %}
 		{% for category, message in messages %}
-		    <div class="col-md-6" style="position: absolute; top:25%; right:30px;">
+		    <div class="col-md-6" style="position: absolute; top:17%; right:30px;">
 			<div class="alert alert-{{ category }} alert-dismissible show fade"  role="alert">
 				<button type="button" class="close" data-dismiss="alert" aria-label="Close">
 					<span aria-hidden="true">&times;</span>

app/app/templates/new/admin/administration.html

+{% extends 'logged_layout.html' %}
+
+{% block title %} Administration - HPC&A IoT {% endblock %}
+
+{% block location %} 
+<a class="h4 mb-0 text-white text-uppercase d-none d-lg-inline-block" href="/administration">Administration</a>
+{% endblock %}
+
+{% block body %}
+    <!-- Page content -->
+    <div class="container-fluid mt--7">
+      <!-- Table -->
+      <div class="row">
+        <div class="col">
+          <div class="card shadow">
+            <div class="card-header bg-transparent">
+              <h3 class="mb-0">Server Administration</h3>
+            </div>
+            <div class="card-body">
+		<form action="/administration" method="post" id="administration">
+			<div class="custom-control custom-control-alternative custom-checkbox">
+			  <input class="custom-control-input" id="signup" type="checkbox" name="signup" {% if config['USERS_SIGNUP'] %} checked {% endif %}>
+			  <label class="custom-control-label" for="signup">
+			    <span class="text-muted">Allow users autonomous registration</span>
+			  </label>
+			</div>
+			<br>
+		</form>
+             	<div class="row" style="margin-top: 30px;">
+                  	<div class="col-lg-3">
+				<button type="submit" form="administration" class="btn btn-primary btn-block">Save</button>
+               		</div>
+                     </div>
+                  </div>
+                </div>
+               </div>
+
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+{% endblock %}
+

app/app/templates/new/public/applications.html

@@ -16,6 +16,7 @@
             </div>
             <div class="card-body">
               <div class="row">
+	      {% if apps %}
 		{% for a in apps %}
                   <div class="col-lg-6 col-md-6" style="margin-bottom : 30px;">
                       <div class="card">
@@ -27,6 +28,11 @@
                       </div>
                   </div>
 		{% endfor %}
+	      {% else %}
+                  <div class="col-lg-12">
+	        <center><p> There are no created applications. </p></center>
+	          </div>
+		{% endif %}
               </div>
 
               <div class="row" style="margin-top: 30px;">

app/app/templates/new/public/device.html

@@ -96,7 +96,7 @@
 			      <p> Total: <strong> {{ total }} </strong> messages. </p>
 			      <table class="table" id="table_{{ k }}">
 				      <thead> 
-					      <th> Time </th>
+					      <th> Timestamp </th>
 				      	      <th> {{ k }} </th>
 				      </thead>
 				      <tbody id="table_{{ k }}_body">

app/app/templates/new/public/login.html

@@ -34,7 +34,7 @@
           </div>
           <!-- Navbar items -->
           <ul class="navbar-nav ml-auto">
-		{% if users_signup %}
+		{% if config['USERS_SIGNUP'] %}
             <li class="nav-item">
               <a class="nav-link nav-link-icon" href="/register">
                 <i class="ni ni-circle-08"></i>
@@ -113,7 +113,7 @@
               <a href="#" class="text-light"><small>Forgot password?</small></a>
             </div>
             <div class="col-6 text-right">
-		    {% if users_signup %}
+		    {% if config['USERS_SIGNUP'] %}
               <a href="/register" class="text-light"><small>Create new account</small></a>
             	    {% endif %}
 	    </div>

app/app/templates/new/public/register.html

@@ -34,7 +34,7 @@
           </div>
           <!-- Navbar items -->
           <ul class="navbar-nav ml-auto">
-		{% if users_signup %}
+		{% if config['USERS_SIGNUP'] %}
             <li class="nav-item">
               <a class="nav-link nav-link-icon" href="/register">
                 <i class="ni ni-circle-08"></i>

app/app/views.py

@@ -612,8 +612,8 @@ def data_csv():
         return redirect(utl_for('index'))
 
 
-@app.route('/administration', methods=['GET', 'POST'])
-def administration():
+@app.route('/administration_old', methods=['GET', 'POST'])
+def administration_old():
     if 'role' in session and session['role'] == 'admin':
         user_cnt = ud.get_count()
         apps_cnt = ad.get_count()

app/app/views_admin.py

+from app import app
+
+from flask import render_template, request, redirect, url_for, session, flash
+
+import app.dao.user.user as ud
+import app.dao.application.application as ad
+import app.dao.device.device as dd
+import app.dao.pend.pend as pend
+import app.dao.data.data as data
+import app.dao.notification.notification as nfs
+import app.dao.trigger.trigger as tr
+import app.dao.notification_queue.notification_queue as nq
+import app.dao.misc.misc as md
+
+#import app.helpers.misc as misc
+from app.helpers.misc import restricted
+
+#import binascii
+
+
+MAX_PG = 5
+MAX_PG_ENTRIES_USERS = 10
+MAX_PG_ENTRIES_DATA = 10
+MAX_PG_ENTRIES_GRAPH_HOURS = 24
+
+@app.route('/administration', methods=['GET', 'POST'])
+@restricted(access_level='admin')
+def administration():
+    if request.method == 'GET':
+        user_cnt = ud.get_count()[1][0]
+        apps_cnt = ad.get_count()[1][0]
+        devs_cnt = dd.get_count_all()
+        info = [user_cnt, apps_cnt, devs_cnt]
+
+        return render_template('new/admin/administration.html', info=info)
+    elif request.method == 'POST':
+        if request.form.getlist('signup') and request.form.getlist('signup')[0] == 'on':
+            app.config['USERS_SIGNUP'] = True
+        else:
+            app.config['USERS_SIGNUP'] = False
+        
+        return redirect(request.url)
+

app/config.py

@@ -2,7 +2,7 @@ class Config(object):
     DEBUG = False
     TESTING = False
 
-    SECRET_KEY = b'ksj^*(s90*Dklds;osdj'
+    SECRET_KEY = 'al1DuE8cFpk3EJNlFHG73Fd'
 
     DB_NAME = 'iotserver'
     DB_USERNAME = 'pi'