"""
Сериализаторы для организаций.

Содержит:
- legacy nested serializers for report forms;
- frontend-facing serializers for organization catalog endpoints.
"""

from apps.organization.availability import has_financial_reports, has_tax_reports
from apps.organization.models import Organization
from apps.organization.scope_utils import (
    SCOPE_LABELS,
    primary_registry_category,
    registry_category_label,
)
from apps.registers.models import Register
from rest_framework import serializers


class OrganizationRegisterSerializer(serializers.ModelSerializer):
    """Краткий сериализатор активного реестра организации."""

    class Meta:
        model = Register
        fields = ["id", "name"]
        read_only_fields = fields


class OrganizationSerializer(serializers.ModelSerializer):
    """Полный nested-сериализатор организации для внутренних API."""

    active_registry_names = serializers.SerializerMethodField()
    active_registries = serializers.SerializerMethodField()

    @staticmethod
    def get_active_registry_names(obj: Organization) -> list[str]:
        return obj.get_active_registry_names()

    @staticmethod
    def get_active_registries(obj: Organization) -> list[dict[str, str]]:
        return OrganizationRegisterSerializer(
            obj.get_active_registries(), many=True
        ).data

    class Meta:
        model = Organization
        fields = [
            "id",
            "name",
            "inn",
            "ogrn",
            "kpp",
            "okpo",
            "active_registry_names",
            "active_registries",
            "created_at",
            "updated_at",
        ]
        read_only_fields = ["id", "created_at", "updated_at"]


class OrganizationListSerializer(serializers.ModelSerializer):
    """Краткий nested-сериализатор для списков."""

    active_registry_names = serializers.SerializerMethodField()

    @staticmethod
    def get_active_registry_names(obj: Organization) -> list[str]:
        return obj.get_active_registry_names()

    class Meta:
        model = Organization
        fields = [
            "id",
            "name",
            "inn",
            "ogrn",
            "active_registry_names",
        ]


class GeneralDirectorSerializer(serializers.Serializer):
    """Сериализатор блока генерального директора."""

    full_name = serializers.CharField()
    inn = serializers.CharField()
    appointment_date = serializers.DateField(allow_null=True)


class OrganizationCatalogSummarySerializer(serializers.Serializer):
    """Сериализатор summary блока организации."""

    financial_reports_available = serializers.BooleanField()
    tax_reports_available = serializers.BooleanField()
    active_registry_names = serializers.ListField(child=serializers.CharField())


class OrganizationCatalogBaseSerializer(serializers.ModelSerializer):
    """Базовый сериализатор frontend-контракта организации."""

    short_name = serializers.SerializerMethodField()
    full_name = serializers.CharField(source="name", read_only=True)
    corporation_scope = serializers.SerializerMethodField()
    corporation_scope_label = serializers.SerializerMethodField()
    registry_category = serializers.SerializerMethodField()
    registry_category_label = serializers.SerializerMethodField()
    organization_type_label = serializers.CharField(read_only=True)
    active_registry_names = serializers.SerializerMethodField()

    @staticmethod
    def get_short_name(obj: Organization) -> str:
        return obj.display_short_name

    @staticmethod
    def get_active_registry_names(obj: Organization) -> list[str]:
        return obj.get_active_registry_names()

    @staticmethod
    def get_registry_category(obj: Organization) -> str:
        return primary_registry_category(obj.get_active_registry_names())

    @staticmethod
    def get_registry_category_label(obj: Organization) -> str:
        return registry_category_label(
            OrganizationCatalogBaseSerializer.get_registry_category(obj)
        )

    @staticmethod
    def _primary_scope_or_default(obj: Organization) -> str:
        scopes = obj.get_corporation_scopes()
        return scopes[0] if scopes else ""

    @staticmethod
    def get_corporation_scope(obj: Organization) -> str:
        return OrganizationCatalogBaseSerializer._primary_scope_or_default(obj)

    @staticmethod
    def get_corporation_scope_label(obj: Organization) -> str:
        scope = OrganizationCatalogBaseSerializer._primary_scope_or_default(obj)
        return OrganizationCatalogBaseSerializer._label_or_empty(scope)

    @staticmethod
    def _label_or_empty(scope_code: str) -> str:
        if not scope_code:
            return ""
        return SCOPE_LABELS.get(scope_code, "")


class OrganizationCatalogListSerializer(OrganizationCatalogBaseSerializer):
    """Сериализатор списка организаций для `/api/v1/organizations/`."""

    class Meta:
        model = Organization
        fields = [
            "id",
            "short_name",
            "full_name",
            "corporation_scope",
            "corporation_scope_label",
            "registry_category",
            "registry_category_label",
            "organization_type",
            "organization_type_label",
            "inn",
            "ogrn",
            "kpp",
            "okpo",
            "active_registry_names",
        ]


class OrganizationCatalogDetailSerializer(OrganizationCatalogBaseSerializer):
    """Сериализатор детальной карточки организации."""

    active_registries = serializers.SerializerMethodField()
    general_director = serializers.SerializerMethodField()
    summary = serializers.SerializerMethodField()

    @staticmethod
    def get_active_registries(obj: Organization) -> list[dict[str, str]]:
        return OrganizationRegisterSerializer(
            obj.get_active_registries(), many=True
        ).data

    @staticmethod
    def get_general_director(obj: Organization) -> dict[str, str | None]:
        return {
            "full_name": obj.general_director_name,
            "inn": obj.general_director_inn,
            "appointment_date": obj.general_director_appointment_date,
        }

    @staticmethod
    def get_summary(obj: Organization) -> dict[str, object]:
        return {
            "financial_reports_available": has_financial_reports(obj),
            "tax_reports_available": has_tax_reports(obj),
            "active_registry_names": obj.get_active_registry_names(),
        }

    class Meta:
        model = Organization
        fields = [
            "id",
            "short_name",
            "full_name",
            "corporation_scope",
            "corporation_scope_label",
            "registry_category",
            "registry_category_label",
            "organization_type",
            "organization_type_label",
            "inn",
            "ogrn",
            "kpp",
            "okpo",
            "registration_date",
            "legal_address",
            "activity_type",
            "founder_name",
            "ownership_type",
            "legal_form",
            "charter_capital_amount",
            "general_director",
            "summary",
            "active_registries",
            "created_at",
            "updated_at",
        ]


class CorporationScopeDictionarySerializer(serializers.Serializer):
    """Serializer for corporation scope dictionary entries."""

    code = serializers.CharField()
    name = serializers.CharField()
    short_name = serializers.CharField()
    sort_order = serializers.IntegerField()