#include "chassis.h"
#include "common/smbios.h"

// 7.4
typedef struct [[gnu::packed]] FFSmbiosSystemEnclosure {
    FFSmbiosHeader Header;

    uint8_t Manufacturer;   // string
    uint8_t Type;           // varies
    uint8_t Version;        // string
    uint8_t SerialNumber;   // string
    uint8_t AssetTagNumber; // string

    // 2.1+
    uint8_t BootupState;      // enum
    uint8_t PowerSupplyState; // enum
    uint8_t ThermalState;     // enum
    uint8_t SecurityStatus;   // enum

    // 2.3+
    uint32_t OEMDefined;           // varies
    uint8_t Height;                // varies
    uint8_t NumberOfPowerCords;    // varies
    uint8_t ContainedElementCount; // varies
    uint8_t ContainedRecordLength; // varies
    uint8_t ContainedElements[];   // varies
} FFSmbiosSystemEnclosure;

static_assert(offsetof(FFSmbiosSystemEnclosure, ContainedElements) == 0x15,
    "FFSmbiosSystemEnclosure: Wrong struct alignment");

const char* ffDetectChassis(FFChassisResult* result) {
    const FFSmbiosHeaderTable* smbiosTable = ffGetSmbiosHeaderTable();
    if (!smbiosTable) {
        return "Failed to get SMBIOS data";
    }

    const FFSmbiosSystemEnclosure* data = (const FFSmbiosSystemEnclosure*) (*smbiosTable)[FF_SMBIOS_TYPE_SYSTEM_ENCLOSURE];
    if (!data) {
        return "System enclosure is not found in SMBIOS data";
    }

    const char* strings = (const char*) data + data->Header.Length;

    ffStrbufSetStatic(&result->vendor, ffSmbiosLocateString(strings, data->Manufacturer));
    ffCleanUpSmbiosValue(&result->vendor);
    ffStrbufSetStatic(&result->serial, ffSmbiosLocateString(strings, data->SerialNumber));
    ffCleanUpSmbiosValue(&result->serial);
    ffStrbufSetStatic(&result->version, ffSmbiosLocateString(strings, data->Version));
    ffCleanUpSmbiosValue(&result->version);
    ffStrbufSetStatic(&result->type, ffChassisTypeToString(data->Type));

    return nullptr;
}
