from datetime import date, datetime
from decimal import Decimal

from pydantic import BaseModel, ConfigDict, field_validator

from app.services.vehicle_identity import normalize_license_plate, validate_vin


class ServiceCenterCreate(BaseModel):
    legal_name: str | None = None
    display_name: str
    country: str | None = None
    city: str | None = None
    address: str | None = None
    phone: str | None = None
    business_registration_number: str | None = None
    telegram_chat_id: str | None = None
    contact_phone: str | None = None


class ServiceCenterRead(ServiceCenterCreate):
    id: int
    name: str
    verification_status: str
    owner_user_id: int | None = None
    created_at: datetime
    verified_at: datetime | None = None
    suspended_at: datetime | None = None

    model_config = ConfigDict(from_attributes=True)


class ServiceCenterVerificationCreate(BaseModel):
    submitted_documents: list[dict] | None = None
    comment: str | None = None


class ServiceCenterVerificationRead(ServiceCenterVerificationCreate):
    id: int
    service_center_id: int
    status: str
    reviewed_by: int | None = None
    reviewed_at: datetime | None = None
    created_at: datetime

    model_config = ConfigDict(from_attributes=True)


class ServiceEmployeeInvite(BaseModel):
    telegram_id: int
    role: str = "receptionist"
    permissions: dict | None = None


class ServiceEmployeeRead(BaseModel):
    id: int
    service_center_id: int
    user_id: int
    role: str
    permissions: dict | None = None
    status: str
    created_at: datetime

    model_config = ConfigDict(from_attributes=True)


class VehicleAccessGrant(BaseModel):
    service_center_id: int | None = None
    user_id: int | None = None
    role: str = "viewer"


class VehicleAccessRead(BaseModel):
    id: int
    vehicle_id: int
    user_id: int
    role: str
    status: str
    created_at: datetime
    revoked_at: datetime | None = None

    model_config = ConfigDict(from_attributes=True)


class VehicleCreate(BaseModel):
    name: str
    make: str | None = None
    model: str | None = None
    year: int | None = None
    license_plate: str | None = None
    license_plate_country: str | None = None
    vin: str | None = None
    current_odometer: int | None = None
    engine_oil_type: str | None = None
    engine_oil_volume_l: Decimal | None = None

    @field_validator("vin")
    @classmethod
    def validate_vin_field(cls, value: str | None) -> str | None:
        return validate_vin(value)


class VehicleUpdate(BaseModel):
    name: str | None = None
    make: str | None = None
    model: str | None = None
    year: int | None = None
    license_plate: str | None = None
    license_plate_country: str | None = None
    vin: str | None = None
    current_odometer: int | None = None
    engine_oil_type: str | None = None
    engine_oil_volume_l: Decimal | None = None

    @field_validator("vin")
    @classmethod
    def validate_vin_field(cls, value: str | None) -> str | None:
        return validate_vin(value)


class VehicleRead(BaseModel):
    id: int
    owner_id: int
    name: str
    make: str | None = None
    model: str | None = None
    year: int | None = None
    license_plate_display: str | None = None
    license_plate_country: str | None = None
    vin_normalized: str | None = None
    current_odometer: int | None = None
    engine_oil_type: str | None = None
    engine_oil_volume_l: Decimal | None = None
    created_at: datetime

    model_config = ConfigDict(from_attributes=True)


class ServiceVisitCreate(BaseModel):
    vehicle_id: int
    visit_date: date
    odometer: int | None = None
    notes: str | None = None
    total_cost: Decimal | None = None
    currency: str = "RUB"


class ServiceVisitRead(ServiceVisitCreate):
    id: int
    service_center_id: int
    created_by_employee_id: int | None = None
    status: str
    owner_resolved_at: datetime | None = None
    created_at: datetime

    model_config = ConfigDict(from_attributes=True)


class ServiceWorkItemCreate(BaseModel):
    work_type: str = "other"
    title: str
    description: str | None = None
    parts: list[dict] | None = None
    oil_brand: str | None = None
    oil_viscosity: str | None = None
    oil_volume: Decimal | None = None
    next_due_odometer: int | None = None
    next_due_date: date | None = None
    price: Decimal | None = None


class ServiceWorkItemRead(ServiceWorkItemCreate):
    id: int
    service_visit_id: int
    created_at: datetime

    model_config = ConfigDict(from_attributes=True)


class VehicleDataChangeRequestCreate(BaseModel):
    vehicle_id: int
    field_name: str
    new_value: str | None = None


class VehicleDataChangeRequestRead(VehicleDataChangeRequestCreate):
    id: int
    requested_by_service_center_id: int | None = None
    requested_by_employee_id: int | None = None
    old_value: str | None = None
    status: str
    owner_user_id: int
    created_at: datetime
    resolved_at: datetime | None = None

    model_config = ConfigDict(from_attributes=True)


class VehicleSearchRequest(BaseModel):
    license_plate: str | None = None
    country_code: str | None = None
    vin: str | None = None

    @field_validator("vin")
    @classmethod
    def validate_vin_field(cls, value: str | None) -> str | None:
        return validate_vin(value)

    @field_validator("license_plate")
    @classmethod
    def normalize_plate_field(cls, value: str | None) -> str | None:
        return normalize_license_plate(value)


class VehicleSearchResult(BaseModel):
    vehicle_id: int | None = None
    make: str | None = None
    model: str | None = None
    year: int | None = None
    masked_license_plate: str | None = None
    masked_vin: str | None = None
    access_status: str = "none"


class CarServiceLinkCreate(BaseModel):
    car_id: int
    service_center_id: int
    external_vehicle_ref: str | None = None
    is_active: bool = True


class CarServiceLinkRead(CarServiceLinkCreate):
    id: int
    created_at: datetime

    model_config = ConfigDict(from_attributes=True)


class ServiceInboxCreate(BaseModel):
    source_chat_id: str | None = None
    raw_text: str
    car_id: int | None = None
    service_center_id: int | None = None


class ServiceInboxRead(ServiceInboxCreate):
    id: int
    parsed_status: str
    parsed_payload: str | None = None
    error: str | None = None
    created_at: datetime

    model_config = ConfigDict(from_attributes=True)