"""Procurement budget serializers."""

from rest_framework import serializers

from procurement.models import Budget


class BudgetSerializer(serializers.ModelSerializer):
    """Сериализатор бюджета отдела."""

    department_name = serializers.CharField(source="department.name", read_only=True)
    remaining_amount = serializers.DecimalField(
        max_digits=14, decimal_places=2, read_only=True
    )
    reserved_amount = serializers.DecimalField(
        max_digits=14, decimal_places=2, read_only=True
    )
    available_amount = serializers.DecimalField(
        max_digits=14, decimal_places=2, read_only=True
    )
    utilization_percentage = serializers.DecimalField(
        max_digits=5, decimal_places=2, read_only=True
    )

    class Meta:
        model = Budget
        fields = [
            "id",
            "department",
            "department_name",
            "year",
            "quarter",
            "allocated_amount",
            "spent_amount",
            "remaining_amount",
            "reserved_amount",
            "available_amount",
            "utilization_percentage",
            "created_at",
            "updated_at",
        ]
        read_only_fields = fields