#include "physicaldisk.h"
#include "util/apple/cf_helpers.h"

#include <IOKit/IOKitLib.h>
#include <IOKit/IOBSD.h>
#include <IOKit/storage/IOMedia.h>
#include <IOKit/storage/IOBlockStorageDriver.h>
#include <IOKit/storage/IOStorageDeviceCharacteristics.h>
#include <IOKit/storage/IOStorageProtocolCharacteristics.h>
#ifdef MAC_OS_X_VERSION_10_15
    #include <IOKit/storage/nvme/NVMeSMARTLibExternal.h>
#endif

#ifdef MAC_OS_X_VERSION_10_15
static inline void wrapIoDestroyPlugInInterface(IOCFPlugInInterface*** pluginInf)
{
    assert(pluginInf);
    if (*pluginInf)
        IODestroyPlugInInterface(*pluginInf);
}
#endif

static const char* detectSsdTemp(io_service_t entryPhysical, double* temp)
{
    #ifdef MAC_OS_X_VERSION_10_15
    __attribute__((__cleanup__(wrapIoDestroyPlugInInterface))) IOCFPlugInInterface** pluginInf = NULL;
    int32_t score;
    if (IOCreatePlugInInterfaceForService(entryPhysical, kIONVMeSMARTUserClientTypeID, kIOCFPlugInInterfaceID, &pluginInf, &score) != kIOReturnSuccess)
        return "IOCreatePlugInInterfaceForService() failed";

    IONVMeSMARTInterface** smartInf = NULL;
    if ((*pluginInf)->QueryInterface(pluginInf, CFUUIDGetUUIDBytes(kIONVMeSMARTInterfaceID), (LPVOID) &smartInf) != kIOReturnSuccess)
        return "QueryInterface() failed";

    NVMeSMARTData smartData;
    const char* error = NULL;
    if ((*smartInf)->SMARTReadData(smartInf, &smartData) == kIOReturnSuccess)
        *temp = smartData.TEMPERATURE - 273;
    else
        error = "SMARTReadData() failed";

    (*pluginInf)->Release(smartInf);
    return error;
    #else
    return "No support for old MacOS version";
    #endif
}

const char* ffDetectPhysicalDisk(FFlist* result, FFPhysicalDiskOptions* options)
{
    FF_IOOBJECT_AUTO_RELEASE io_iterator_t iterator = 0;
    if (IOServiceGetMatchingServices(MACH_PORT_NULL, IOServiceMatching(kIOMediaClass), &iterator) != KERN_SUCCESS)
        return "IOServiceGetMatchingServices() failed";

    io_registry_entry_t registryEntry;
    while ((registryEntry = IOIteratorNext(iterator)) != IO_OBJECT_NULL)
    {
        FF_IOOBJECT_AUTO_RELEASE io_registry_entry_t entryPartition = registryEntry;

        io_name_t deviceName;
        if (IORegistryEntryGetName(registryEntry, deviceName) != KERN_SUCCESS)
            continue;

        if (options->namePrefix.length && strncmp(deviceName, options->namePrefix.chars, options->namePrefix.length) != 0)
            continue;

        FF_IOOBJECT_AUTO_RELEASE io_registry_entry_t entryDriver = 0;
        if (IORegistryEntryGetParentEntry(entryPartition, kIOServicePlane, &entryDriver) != KERN_SUCCESS)
            continue;

        if (!IOObjectConformsTo(entryDriver, kIOBlockStorageDriverClass)) // physical disk only
            continue;

        FFPhysicalDiskResult* device = (FFPhysicalDiskResult*) ffListAdd(result);
        ffStrbufInit(&device->serial);
        ffStrbufInit(&device->revision);
        ffStrbufInitS(&device->name, deviceName);
        ffStrbufInit(&device->devPath);
        ffStrbufInit(&device->interconnect);
        device->type = FF_PHYSICALDISK_TYPE_NONE;
        device->size = 0;
        device->temperature = FF_PHYSICALDISK_TEMP_UNSET;

        FF_CFTYPE_AUTO_RELEASE CFBooleanRef removable = IORegistryEntryCreateCFProperty(entryPartition, CFSTR(kIOMediaRemovableKey), kCFAllocatorDefault, kNilOptions);
        if (removable)
            device->type |= CFBooleanGetValue(removable) ? FF_PHYSICALDISK_TYPE_REMOVABLE : FF_PHYSICALDISK_TYPE_FIXED;

        FF_CFTYPE_AUTO_RELEASE CFBooleanRef writable = IORegistryEntryCreateCFProperty(entryPartition, CFSTR(kIOMediaWritableKey), kCFAllocatorDefault, kNilOptions);
        if (writable)
            device->type |= CFBooleanGetValue(writable) ? FF_PHYSICALDISK_TYPE_READWRITE : FF_PHYSICALDISK_TYPE_READONLY;

        FF_CFTYPE_AUTO_RELEASE CFStringRef bsdName = IORegistryEntryCreateCFProperty(entryPartition, CFSTR(kIOBSDNameKey), kCFAllocatorDefault, kNilOptions);
        if (bsdName)
        {
            ffCfStrGetString(bsdName, &device->devPath);
            ffStrbufPrependS(&device->devPath, "/dev/");
        }

        FF_CFTYPE_AUTO_RELEASE CFNumberRef mediaSize = IORegistryEntryCreateCFProperty(entryPartition, CFSTR(kIOMediaSizeKey), kCFAllocatorDefault, kNilOptions);
        if (mediaSize)
            ffCfNumGetInt64(mediaSize, (int64_t*) &device->size);
        else
            device->size = 0;

        FF_IOOBJECT_AUTO_RELEASE io_registry_entry_t entryPhysical = 0;
        if (IORegistryEntryGetParentEntry(entryDriver, kIOServicePlane, &entryPhysical) == KERN_SUCCESS)
        {
            FF_CFTYPE_AUTO_RELEASE CFDictionaryRef protocolCharacteristics = IORegistryEntryCreateCFProperty(entryPhysical, CFSTR(kIOPropertyProtocolCharacteristicsKey), kCFAllocatorDefault, kNilOptions);
            if (protocolCharacteristics)
                ffCfDictGetString(protocolCharacteristics, CFSTR(kIOPropertyPhysicalInterconnectTypeKey), &device->interconnect);

            FF_CFTYPE_AUTO_RELEASE CFDictionaryRef deviceCharacteristics = IORegistryEntryCreateCFProperty(entryPhysical, CFSTR(kIOPropertyDeviceCharacteristicsKey), kCFAllocatorDefault, kNilOptions);
            if (deviceCharacteristics)
            {
                ffCfDictGetString(deviceCharacteristics, CFSTR(kIOPropertyProductSerialNumberKey), &device->serial);
                ffStrbufTrim(&device->serial, ' ');
                ffCfDictGetString(deviceCharacteristics, CFSTR(kIOPropertyProductRevisionLevelKey), &device->revision);
                ffStrbufTrim(&device->revision, ' ');

                CFStringRef mediumType = (CFStringRef) CFDictionaryGetValue(deviceCharacteristics, CFSTR(kIOPropertyMediumTypeKey));
                if (mediumType)
                {
                    if (CFStringCompare(mediumType, CFSTR(kIOPropertyMediumTypeSolidStateKey), 0) == 0)
                        device->type |= FF_PHYSICALDISK_TYPE_SSD;
                    else if (CFStringCompare(mediumType, CFSTR(kIOPropertyMediumTypeRotationalKey), 0) == 0)
                        device->type |= FF_PHYSICALDISK_TYPE_HDD;
                }
            }

            #ifdef MAC_OS_X_VERSION_10_15
            if (options->temp)
            {
                FF_CFTYPE_AUTO_RELEASE CFBooleanRef nvmeSMARTCapable = IORegistryEntryCreateCFProperty(entryPhysical, CFSTR(kIOPropertyNVMeSMARTCapableKey), kCFAllocatorDefault, kNilOptions);
                if (nvmeSMARTCapable && CFBooleanGetValue(nvmeSMARTCapable))
                    detectSsdTemp(entryPhysical, &device->temperature);
            }
            #endif
        }
    }

    return NULL;
}
