"""Hardware of the managed server: Processors, Memory, Storage, Drives, SimpleStorage."""

from __future__ import annotations

from collections.abc import Mapping
from typing import Any

from .common import boolean, ident, integer, link, link_list, location_label, present, status, text


def parse_processor(cpu: Mapping[str, Any]) -> dict[str, Any]:
    """One member of ``Systems/{id}/Processors``."""
    state, health = status(cpu)
    return {
        "id": text(cpu.get("Id")),
        "name": text(cpu.get("Name")),
        "socket": text(cpu.get("Socket")) or location_label(cpu),
        "processor_type": text(cpu.get("ProcessorType")),
        "manufacturer": ident(cpu.get("Manufacturer")),
        "model": ident(cpu.get("Model")),
        "architecture": text(cpu.get("ProcessorArchitecture")),
        "instruction_set": text(cpu.get("InstructionSet")),
        "max_speed_mhz": integer(cpu.get("MaxSpeedMHz")),
        "cores": integer(cpu.get("TotalCores")),
        "threads": integer(cpu.get("TotalThreads")),
        "serial_number": ident(cpu.get("SerialNumber")),
        "present": present(cpu),
        "state": state,
        "health": health,
    }


def parse_memory(dimm: Mapping[str, Any]) -> dict[str, Any]:
    """One member of ``Systems/{id}/Memory``.

    An enabled slot with a capacity of 0 counts as empty: some BMCs list empty slots so.
    """
    state, health = status(dimm)
    capacity = integer(dimm.get("CapacityMiB"))
    return {
        "id": text(dimm.get("Id")),
        "name": text(dimm.get("Name")),
        "location": (
            location_label(dimm) or text(dimm.get("DeviceLocator")) or text(dimm.get("Name"))
        ),
        "capacity_mib": capacity,
        "memory_device_type": text(dimm.get("MemoryDeviceType")),
        "base_module_type": text(dimm.get("BaseModuleType")),
        "speed_mhz": integer(dimm.get("OperatingSpeedMhz")),
        "manufacturer": ident(dimm.get("Manufacturer")),
        "part_number": ident(dimm.get("PartNumber")),
        "serial_number": ident(dimm.get("SerialNumber")),
        "present": present(dimm) and capacity != 0,
        "state": state,
        "health": health,
    }


def _controller(ctrl: Mapping[str, Any]) -> dict[str, Any]:
    state, health = status(ctrl)
    return {
        "name": text(ctrl.get("Name")),
        "manufacturer": ident(ctrl.get("Manufacturer")),
        "model": ident(ctrl.get("Model")),
        "serial_number": ident(ctrl.get("SerialNumber")),
        "firmware_version": text(ctrl.get("FirmwareVersion")),
        "speed_gbps": ctrl.get("SpeedGbps")
        if isinstance(ctrl.get("SpeedGbps"), (int, float))
        else None,
        "state": state,
        "health": health,
    }


def parse_storage(storage: Mapping[str, Any]) -> dict[str, Any]:
    """One member of ``Systems/{id}/Storage``.

    Drives are separate resources: ``drive_paths`` lists them for ``parse_drive``. Storage
    1.15 and later move controllers into a collection at ``controllers_path``.
    """
    state, health = status(storage)
    controllers = storage.get("StorageControllers")
    return {
        "id": text(storage.get("Id")),
        "name": text(storage.get("Name")),
        "state": state,
        "health": health,
        "controllers": [_controller(c) for c in controllers if isinstance(c, Mapping)]
        if isinstance(controllers, list)
        else [],
        "controllers_path": link(storage, "Controllers"),
        "drive_paths": link_list(storage, "Drives"),
    }


def parse_drive(drive: Mapping[str, Any]) -> dict[str, Any]:
    """A Drive resource, as linked from Storage."""
    state, health = status(drive)
    return {
        "id": text(drive.get("Id")),
        "name": text(drive.get("Name")),
        "manufacturer": ident(drive.get("Manufacturer")),
        "model": ident(drive.get("Model")),
        "serial_number": ident(drive.get("SerialNumber")),
        "part_number": ident(drive.get("PartNumber")),
        "revision": text(drive.get("Revision")),
        "capacity_bytes": integer(drive.get("CapacityBytes")),
        "media_type": text(drive.get("MediaType")),
        "protocol": text(drive.get("Protocol")),
        "failure_predicted": boolean(drive.get("FailurePredicted")),
        "present": present(drive),
        "state": state,
        "health": health,
    }


def parse_simple_storage(storage: Mapping[str, Any]) -> dict[str, Any]:
    """One member of ``Systems/{id}/SimpleStorage`` (older services, no Storage).

    Its devices come out with the same keys as ``parse_drive``.
    """
    state, health = status(storage)
    devices = storage.get("Devices")
    drives = (
        [parse_drive(dev) for dev in devices if isinstance(dev, Mapping)]
        if isinstance(devices, list)
        else []
    )
    return {
        "id": text(storage.get("Id")),
        "name": text(storage.get("Name")),
        "state": state,
        "health": health,
        "drives": drives,
    }