"""Сериализаторы формы Ф-6."""

from apps.form_6.models import FormF6Record
from apps.organization.serializers import OrganizationSerializer
from rest_framework import serializers


class FormF6RecordSerializer(serializers.ModelSerializer):
    organization = OrganizationSerializer(read_only=True)

    class Meta:
        model = FormF6Record
        fields = "__all__"
        read_only_fields = ["id", "created_at", "updated_at"]


class FormF6RecordListSerializer(serializers.ModelSerializer):
    organization_name = serializers.CharField(source="organization.name", read_only=True)
    organization_inn = serializers.CharField(source="organization.inn", read_only=True)

    class Meta:
        model = FormF6Record
        fields = [
            "id", "organization_name", "organization_inn", "load_batch",
            "row_code", "category", "total_equipment", "physical_wear_percent",
            "created_at",
        ]


class FormF6UploadSerializer(serializers.Serializer):
    file = serializers.FileField(help_text="Excel файл формы Ф-6 (.xlsx)")

    def validate_file(self, value):
        if not value.name.endswith((".xlsx", ".xls")):
            raise serializers.ValidationError("Неподдерживаемый формат файла")
        if value.size > 50 * 1024 * 1024:
            raise serializers.ValidationError("Размер файла превышает 50MB")
        return value


class FieldErrorSerializer(serializers.Serializer):
    field = serializers.CharField()
    message = serializers.CharField()


class RowValidationErrorSerializer(serializers.Serializer):
    row = serializers.IntegerField()
    inn = serializers.CharField(allow_null=True)
    kpp = serializers.CharField(allow_null=True)
    organization_name = serializers.CharField(allow_null=True)
    errors = FieldErrorSerializer(many=True)


class FormF6ParseResultSerializer(serializers.Serializer):
    batch_id = serializers.IntegerField()
    loaded_count = serializers.IntegerField()
    skipped_count = serializers.IntegerField()
    errors = RowValidationErrorSerializer(many=True)