[WEI] Add script to import bus scores

Signed-off-by: Yohann D'ANELLO <ynerant@crans.org>

apps/wei/management/commands/import_scores.py

+# Copyright (C) 2018-2021 by BDE ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
+import argparse
+import sys
+
+from django.core.management import BaseCommand
+from django.db import transaction
+
+from ...forms import CurrentSurvey
+from ...forms.surveys.wei2021 import WORDS   # WARNING: this is specific to 2021
+from ...models import Bus
+
+
+class Command(BaseCommand):
+    """
+    This script is used to load scores for buses from a CSV file.
+    """
+    def add_arguments(self, parser):
+        parser.add_argument('file', nargs='?', type=argparse.FileType('r'), default=sys.stdin, help='Input CSV file')
+
+    @transaction.atomic
+    def handle(self, *args, **options):
+        file = options['file']
+        head = file.readline().replace('\n', '')
+        bus_names = head.split(';')
+        bus_names = [name for name in bus_names if name]
+        buses = []
+        for name in bus_names:
+            qs = Bus.objects.filter(name__iexact=name)
+            if not qs.exists():
+                raise ValueError(f"Bus '{name}' does not exist")
+            buses.append(qs.get())
+
+        informations = {bus: CurrentSurvey.get_algorithm_class().get_bus_information(bus) for bus in buses}
+
+        for line in file:
+            elem = line.split(';')
+            word = elem[0]
+            if word not in WORDS:
+                raise ValueError(f"Word {word} is not used")
+
+            for i, bus in enumerate(buses):
+                info = informations[bus]
+                info.scores[word] = float(elem[i + 1].replace(',', '.'))
+
+        for bus, info in informations.items():
+            info.save()
+            bus.save()
+            if options['verbosity'] > 0:
+                self.stdout.write(f"Bus {bus.name} saved!")