Statistik Import- und Export.

backend/app.py

@@ -7,6 +7,7 @@ import os
 import json
 from flask_basicauth import BasicAuth
 from helpers import nocache
+from werkzeug.utils import secure_filename
 app = Flask(__name__, static_url_path='/static')
 
 basic_auth = BasicAuth(app)
@@ -186,6 +187,54 @@ def query_songs_with_details_suggest(input_string=""):
     return jsonify(result)
 
 
+@app.route("/api/songs/stats")
+@nocache
+# Return the data from long_term_stats as json
+def get_stats():
+    db_result = database.get_long_term_stats()
+    data = []
+    for row in db_result:
+        data.append(dict(zip(['id', 'count'], row)))
+    return jsonify(data)
+
+
+@app.route("/api/songs/stats.csv")
+@nocache
+# Return data from long_term_stats as csv
+def get_stats_csv():
+    db_result = database.get_long_term_stats()
+    print(db_result)
+    csv = "Id,Playbacks\n"
+    for row in db_result:
+        csv += str(row[0]) + "," + str(row[1]) + "\n"
+    return Response(csv, mimetype='text/csv')
+
+
+@app.route("/api/songs/stats.csv", methods=['POST'])
+@nocache
+@basic_auth.required
+# Update long_term_stats from csv
+def update_stats_csv():
+    if not request.files:
+        abort(400)
+    file = request.files['file']
+    if file.filename is None:
+        abort(400)
+    else:
+        filename = secure_filename(file.filename)
+    if filename == '':
+        abort(400)
+    if not filename.endswith('.csv'):
+        abort(400)
+    if file:
+        if database.import_stats(file):
+            return Response('{"status": "OK"}', mimetype='text/json')
+        else:
+            return Response('{"status": "FAIL"}', mimetype='text/json', status=400)
+    else:
+        abort(400)
+
+
 @app.route("/api/songs/details/<song_id>")
 def get_song_details(song_id):
     result = database.get_song_details(song_id)

backend/database.py

@@ -40,6 +40,20 @@ def import_songs(song_csv):
     return ("Imported songs ({} in Database)".format(num_songs))
 
 
+def import_stats(stats_csv):
+    print("Start importing Stats...")
+    df = pandas.read_csv(stats_csv, sep=',')
+    if (df.columns[0] != "Id" or df.columns[1] != "Playbacks"):
+        return False
+    with get_db_engine().connect() as conn:
+        for index, row in df.iterrows():
+            stmt = text(
+                "INSERT INTO long_term_stats (Id,Playbacks) VALUES (:par_id,:par_playbacks) ON DUPLICATE KEY UPDATE Playbacks=:par_playbacks")
+            conn.execute(stmt, {"par_id": row["Id"], "par_playbacks": row["Playbacks"]})
+        conn.commit()
+    return True
+
+
 def create_schema():
     create_song_table()
     create_entry_table()
@@ -161,6 +175,16 @@ def get_song_suggestions(count: int):
     return cur.fetchall()
 
 
+def get_long_term_stats():
+    with get_db_engine().connect() as conn:
+        stmt = text("""
+                    SELECT lts.Id, lts.Playbacks
+                    FROM long_term_stats lts
+                    """)
+        cur = conn.execute(stmt)
+    return cur.fetchall()
+
+
 def get_song_list():
     with get_db_engine().connect() as conn:
         stmt = text("SELECT Artist || \" - \" || Title AS Song, Id FROM songs;")

backend/templates/settings.html

@@ -4,7 +4,8 @@
 <form method="post">
     <p>
         <label for="entryquota">Maximale Anzahl an Einträgen pro Nutzer</label>
-        <input type="number" class="form-control" id="entryquota" name="entryquota" min=1 value={{app.config['ENTRY_QUOTA']}}>
+        <input type="number" class="form-control" id="entryquota" name="entryquota" min=1
+            value={{app.config['ENTRY_QUOTA']}}>
     </p>
     <p>
         <label for="maxqueue">Maximale Anzahl an Einträgen Insgesamt</label>
@@ -24,7 +25,8 @@
     </div>
     <p>
         <label for="username">Benutzername</label>
-        <input type="text" class="form-control" id="username" name="username" value={{app.config['BASIC_AUTH_USERNAME']}}>
+        <input type="text" class="form-control" id="username" name="username"
+            value={{app.config['BASIC_AUTH_USERNAME']}}>
     </p>
     <p>
         <label for="password">Passwort ändern</label>
@@ -32,10 +34,69 @@
     </p>
     <input type="submit" class="btn btn-primary mr-1 mb-2" value="Einstellungen anwenden">
 </form>
+<form>
+    <p>
+        <label for="statsImport">Statistiken importieren/exportieren</label>
+    </p>
+    <div class="row">
+        <div class="col-sm-4">
+            <a class="btn btn-secondary" type="button" id="statsExport" href="/api/songs/stats.csv"><i class="fas fa-download mr-1"></i>Exportieren</a>
+        </div>
+        <div class="col input-group mb-3">
+            <div class="custom-file mr-1">
+                <input type="file" class="custom-file-input" id="statsImport" data-allowed-file-extensions='["csv"]'>
+                <label class="custom-file-label" for="statsImport">CSV-Datei auswählen</label>
+            </div>
+            <button class="btn btn-secondary" type="button" id="statsImportBtn"><i class="fas fa-upload mr-1"></i>Importieren</button>
+        </div>
+    </div>
+    
+    <p>
+    </p>
+</form>
 <details>
     <summary>Current config:</summary>
     <pre>{% for key, val in config.items() %}{{key}}: {{val}}<br>{% endfor %}</pre>
 </details>
 {% endblock %}
 {% block extrajs %}
+<script>
+    $(document).ready(function () {
+        $('#statsImport').on('change', function () {
+            var fileName = $(this).val().split('\\').pop();
+            $(this).next('.custom-file-label').html(fileName);
+        });
+        $('#statsImportBtn').on('click', function () {
+            var file_data = $('#statsImport').prop('files')[0];
+            var form_data = new FormData();
+            form_data.append('file', file_data);
+            $.ajax({
+                url: '/api/songs/stats.csv',
+                cache: false,
+                contentType: false,
+                processData: false,
+                data: form_data,
+                type: 'post',
+                success: function (response) {
+                    toast = {
+                        title: "Erfolgreich importiert",
+                        message: "Die Statistiken wurden erfolgreich importiert.",
+                        status: TOAST_STATUS.SUCCESS,
+                        timeout: 5000
+                    }
+                    Toast.create(toast);
+                },
+                error: function (response) {
+                    toast = {
+                        title: "Fehler beim Importieren",
+                        message: "Die Statistiken konnten nicht importiert werden.",
+                        status: TOAST_STATUS.ERROR,
+                        timeout: 5000
+                    }
+                    Toast.create(toast);
+                }
+            });
+        });
+    });
+</script>
 {% endblock %}