feat(api): add endpoints for importing files and getting account balance

app/apps/api/serializers/__init__.py

@@ -2,3 +2,5 @@ from .transactions import *
 from .accounts import *
 from .currencies import *
 from .dca import *
+from .imports import *
+

app/apps/api/serializers/accounts.py

@@ -67,3 +67,12 @@ class AccountSerializer(serializers.ModelSerializer):
             setattr(instance, attr, value)
         instance.save()
         return instance
+
+
+class AccountBalanceSerializer(serializers.Serializer):
+    """Serializer for account balance response."""
+
+    current_balance = serializers.DecimalField(max_digits=20, decimal_places=10)
+    projected_balance = serializers.DecimalField(max_digits=20, decimal_places=10)
+    currency = CurrencySerializer()
+

app/apps/api/serializers/imports.py

@@ -0,0 +1,41 @@
+from rest_framework import serializers
+
+from apps.import_app.models import ImportProfile, ImportRun
+
+
+class ImportProfileSerializer(serializers.ModelSerializer):
+    """Serializer for listing import profiles."""
+
+    class Meta:
+        model = ImportProfile
+        fields = ["id", "name", "version", "yaml_config"]
+
+
+class ImportRunSerializer(serializers.ModelSerializer):
+    """Serializer for listing import runs."""
+
+    class Meta:
+        model = ImportRun
+        fields = [
+            "id",
+            "status",
+            "profile",
+            "file_name",
+            "logs",
+            "processed_rows",
+            "total_rows",
+            "successful_rows",
+            "skipped_rows",
+            "failed_rows",
+            "started_at",
+            "finished_at",
+        ]
+
+
+class ImportFileSerializer(serializers.Serializer):
+    """Serializer for uploading a file to import using an existing profile."""
+
+    profile_id = serializers.PrimaryKeyRelatedField(
+        queryset=ImportProfile.objects.all(), source="profile"
+    )
+    file = serializers.FileField()