from datetime import datetime
from typing import Any, Generic, TypeVar

from pydantic import BaseModel, ConfigDict, Field

T = TypeVar("T")


# ---------------------------------------------------------------------------
# Generic API response wrapper
# ---------------------------------------------------------------------------


class APIResponse(BaseModel, Generic[T]):
    """Standard envelope for every API response."""

    code: int = 0
    message: str = "success"
    data: T | None = None


class PaginationParams(BaseModel):
    """Query parameters for paginated list endpoints."""

    page: int = Field(default=1, ge=1, description="Page number (1-indexed)")
    page_size: int = Field(default=20, ge=1, le=100, description="Items per page")


class PaginatedList(BaseModel, Generic[T]):
    """Paginated result set."""

    items: list[T]
    total: int
    page: int
    page_size: int
    total_pages: int


# ---------------------------------------------------------------------------
# Device schemas
# ---------------------------------------------------------------------------


class DeviceBase(BaseModel):
    imei: str = Field(..., min_length=15, max_length=20, description="IMEI number")
    device_type: str = Field(..., max_length=10, description="Device type code")
    name: str | None = Field(None, max_length=100, description="Friendly name")
    timezone: str = Field(default="+8", max_length=30)
    language: str = Field(default="cn", max_length=10)


class DeviceCreate(DeviceBase):
    pass


class DeviceUpdate(BaseModel):
    name: str | None = Field(None, max_length=100)
    status: str | None = Field(None, max_length=20)
    battery_level: int | None = None
    gsm_signal: int | None = None
    iccid: str | None = Field(None, max_length=30)
    imsi: str | None = Field(None, max_length=20)
    timezone: str | None = Field(None, max_length=30)
    language: str | None = Field(None, max_length=10)


class DeviceResponse(DeviceBase):
    model_config = ConfigDict(from_attributes=True)

    id: int
    status: str
    battery_level: int | None = None
    gsm_signal: int | None = None
    last_heartbeat: datetime | None = None
    last_login: datetime | None = None
    iccid: str | None = None
    imsi: str | None = None
    created_at: datetime
    updated_at: datetime | None = None


class DeviceListResponse(APIResponse[PaginatedList[DeviceResponse]]):
    pass


class DeviceSingleResponse(APIResponse[DeviceResponse]):
    pass


# ---------------------------------------------------------------------------
# Location Record schemas
# ---------------------------------------------------------------------------


class LocationRecordBase(BaseModel):
    device_id: int
    location_type: str = Field(..., max_length=10)
    latitude: float | None = None
    longitude: float | None = None
    speed: float | None = None
    course: float | None = None
    gps_satellites: int | None = None
    gps_positioned: bool = False
    mcc: int | None = None
    mnc: int | None = None
    lac: int | None = None
    cell_id: int | None = None
    rssi: int | None = None
    neighbor_cells: list[dict[str, Any]] | None = None
    wifi_data: list[dict[str, Any]] | None = None
    report_mode: int | None = None
    is_realtime: bool = True
    mileage: float | None = None
    address: str | None = None
    raw_data: str | None = None
    recorded_at: datetime


class LocationRecordCreate(LocationRecordBase):
    pass


class LocationRecordResponse(LocationRecordBase):
    model_config = ConfigDict(from_attributes=True)

    id: int
    created_at: datetime


class LocationRecordFilters(BaseModel):
    device_id: int | None = None
    location_type: str | None = None
    start_time: datetime | None = None
    end_time: datetime | None = None


class LocationListResponse(APIResponse[PaginatedList[LocationRecordResponse]]):
    pass


# ---------------------------------------------------------------------------
# Alarm Record schemas
# ---------------------------------------------------------------------------


class AlarmRecordBase(BaseModel):
    device_id: int
    alarm_type: str = Field(..., max_length=30)
    alarm_source: str | None = Field(None, max_length=10)
    protocol_number: int
    latitude: float | None = None
    longitude: float | None = None
    speed: float | None = None
    course: float | None = None
    mcc: int | None = None
    mnc: int | None = None
    lac: int | None = None
    cell_id: int | None = None
    battery_level: int | None = None
    gsm_signal: int | None = None
    fence_data: dict[str, Any] | None = None
    wifi_data: list[dict[str, Any]] | None = None
    address: str | None = None
    recorded_at: datetime


class AlarmRecordCreate(AlarmRecordBase):
    pass


class AlarmRecordResponse(AlarmRecordBase):
    model_config = ConfigDict(from_attributes=True)

    id: int
    acknowledged: bool
    created_at: datetime


class AlarmAcknowledge(BaseModel):
    acknowledged: bool = True


class AlarmRecordFilters(BaseModel):
    device_id: int | None = None
    alarm_type: str | None = None
    acknowledged: bool | None = None
    start_time: datetime | None = None
    end_time: datetime | None = None


class AlarmListResponse(APIResponse[PaginatedList[AlarmRecordResponse]]):
    pass


# ---------------------------------------------------------------------------
# Heartbeat Record schemas
# ---------------------------------------------------------------------------


class HeartbeatRecordBase(BaseModel):
    device_id: int
    protocol_number: int
    terminal_info: int
    battery_level: int
    gsm_signal: int
    extension_data: dict[str, Any] | None = None


class HeartbeatRecordCreate(HeartbeatRecordBase):
    pass


class HeartbeatRecordResponse(HeartbeatRecordBase):
    model_config = ConfigDict(from_attributes=True)

    id: int
    created_at: datetime


class HeartbeatListResponse(APIResponse[PaginatedList[HeartbeatRecordResponse]]):
    pass


# ---------------------------------------------------------------------------
# Attendance Record schemas
# ---------------------------------------------------------------------------


class AttendanceRecordBase(BaseModel):
    device_id: int
    attendance_type: str = Field(..., max_length=20)
    protocol_number: int
    gps_positioned: bool = False
    latitude: float | None = None
    longitude: float | None = None
    speed: float | None = None
    course: float | None = None
    gps_satellites: int | None = None
    battery_level: int | None = None
    gsm_signal: int | None = None
    mcc: int | None = None
    mnc: int | None = None
    lac: int | None = None
    cell_id: int | None = None
    wifi_data: list[dict[str, Any]] | None = None
    lbs_data: list[dict[str, Any]] | None = None
    address: str | None = None
    recorded_at: datetime


class AttendanceRecordCreate(AttendanceRecordBase):
    pass


class AttendanceRecordResponse(AttendanceRecordBase):
    model_config = ConfigDict(from_attributes=True)

    id: int
    created_at: datetime


class AttendanceRecordFilters(BaseModel):
    device_id: int | None = None
    attendance_type: str | None = None
    start_time: datetime | None = None
    end_time: datetime | None = None


class AttendanceListResponse(APIResponse[PaginatedList[AttendanceRecordResponse]]):
    pass


# ---------------------------------------------------------------------------
# Bluetooth Record schemas
# ---------------------------------------------------------------------------


class BluetoothRecordBase(BaseModel):
    device_id: int
    record_type: str = Field(..., max_length=20)
    protocol_number: int
    beacon_mac: str | None = None
    beacon_uuid: str | None = None
    beacon_major: int | None = None
    beacon_minor: int | None = None
    rssi: int | None = None
    beacon_battery: float | None = None
    beacon_battery_unit: str | None = None
    attendance_type: str | None = None
    bluetooth_data: dict[str, Any] | None = None
    latitude: float | None = None
    longitude: float | None = None
    recorded_at: datetime


class BluetoothRecordCreate(BluetoothRecordBase):
    pass


class BluetoothRecordResponse(BluetoothRecordBase):
    model_config = ConfigDict(from_attributes=True)

    id: int
    created_at: datetime


class BluetoothRecordFilters(BaseModel):
    device_id: int | None = None
    record_type: str | None = None
    start_time: datetime | None = None
    end_time: datetime | None = None


class BluetoothListResponse(APIResponse[PaginatedList[BluetoothRecordResponse]]):
    pass


# ---------------------------------------------------------------------------
# Beacon Config schemas
# ---------------------------------------------------------------------------


class BeaconConfigBase(BaseModel):
    beacon_mac: str = Field(..., max_length=20, description="信标MAC地址")
    beacon_uuid: str | None = Field(None, max_length=36, description="iBeacon UUID")
    beacon_major: int | None = Field(None, description="iBeacon Major")
    beacon_minor: int | None = Field(None, description="iBeacon Minor")
    name: str = Field(..., max_length=100, description="信标名称")
    floor: str | None = Field(None, max_length=20, description="楼层")
    area: str | None = Field(None, max_length=100, description="区域")
    latitude: float | None = Field(None, description="纬度")
    longitude: float | None = Field(None, description="经度")
    address: str | None = Field(None, description="详细地址")
    status: str = Field(default="active", max_length=20, description="状态")


class BeaconConfigCreate(BeaconConfigBase):
    pass


class BeaconConfigUpdate(BaseModel):
    beacon_uuid: str | None = Field(None, max_length=36)
    beacon_major: int | None = None
    beacon_minor: int | None = None
    name: str | None = Field(None, max_length=100)
    floor: str | None = Field(None, max_length=20)
    area: str | None = Field(None, max_length=100)
    latitude: float | None = None
    longitude: float | None = None
    address: str | None = None
    status: str | None = Field(None, max_length=20)


class BeaconConfigResponse(BeaconConfigBase):
    model_config = ConfigDict(from_attributes=True)

    id: int
    created_at: datetime
    updated_at: datetime | None = None


# ---------------------------------------------------------------------------
# Command Log schemas
# ---------------------------------------------------------------------------


class CommandCreate(BaseModel):
    device_id: int
    command_type: str = Field(..., max_length=30)
    command_content: str
    server_flag: str = Field(..., max_length=20)


class CommandUpdate(BaseModel):
    response_content: str | None = None
    status: str | None = Field(None, max_length=20)
    sent_at: datetime | None = None
    response_at: datetime | None = None


class CommandResponse(BaseModel):
    model_config = ConfigDict(from_attributes=True)

    id: int
    device_id: int
    command_type: str
    command_content: str
    server_flag: str
    response_content: str | None = None
    status: str
    sent_at: datetime | None = None
    response_at: datetime | None = None
    created_at: datetime


class CommandListResponse(APIResponse[PaginatedList[CommandResponse]]):
    pass