//
// Headless communication constants and structures.
//
#define VTUTF8_CLEAR_SCREEN         L"\033[2J\033[0;0H"
#define MY_MAX_STRING_LENGTH        (256)

typedef struct _UserInputParams {
    EMSVTUTF8Channel* Channel; // headless channel object
    HANDLE hInputCompleteEvent; //signals that the user is done.
    HANDLE hRemoveUI;  //signals that we should abort.
} UserInputParams, *PUserInputParams;

            


typedef BOOL    ( STDAPICALLTYPE *SETUPPIDGENW )(
                        LPWSTR  lpstrSecureCdKey,   // [IN] 25-character Secure CD-Key (gets U-Cased)
                        LPCWSTR lpstrMpc,           // [IN] 5-character Microsoft Product Code
                        LPCWSTR lpstrSku,           // [IN] Stock Keeping Unit (formatted like 123-12345)
                        BOOL   fOem,                // [IN] is this an OEM install?
                        LPWSTR lpstrPid2,           // [OUT] PID 2.0, pass in ptr to 24 character array
                        LPBYTE  lpbDigPid,          // [IN/OUT] pointer to DigitalPID buffer. First DWORD is the length
                        LPBOOL  pfCCP);              // [OUT] optional ptr to Compliance Checking flag (can be NULL)


DEFINE_GUID(
    SAC_CHANNEL_GUI_SETUP_PROMPT, /* 77320899-e37c-41bc-8cbc-840920e12b60 */
    0x77320899,0xe37c,0x41bc,0x8c, 0xbc, 0x84, 0x09, 0x20, 0xe1, 0x2b, 0x60);





//
// PID presentation constants.
//
#define MAX_PID30_SITE              (3)
#define MAX_PID30_RPC               (5)
#define SETUP_TYPE_BUFFER_LEN       (8)


//
// EULA presentation constants.
//
#define EULA_LINES_PER_SCREEN       (15)






//
// EMS communication function prototypes.
//

BOOL 
IsHeadlessPresent(
    OUT EMSVTUTF8Channel **Channel
    );

BOOL
InitializeGlobalChannelAttributes(
    PSAC_CHANNEL_OPEN_ATTRIBUTES ChannelAttributes
    );

BOOL
WaitForUserInputFromEMS(
    IN  DWORD   TimeOut,
    OUT BOOL    *TimedOut,  OPTIONAL
    IN  HANDLE  hCancelEvent  OPTIONAL
    );

BOOL
ReadCharFromEMS(
    OUT PWCHAR  awc,
    IN  HANDLE  hCancelEvent  OPTIONAL
    );

BOOL
GetStringFromEMS(
    OUT PWSTR   String,
    IN  ULONG   BufferSize,
    IN  BOOL    GetAllChars,
    IN  BOOL    EchoClearText,
    IN  HANDLE  hCancelEvent  OPTIONAL
    );

VOID
ClearEMSScreen();

BOOL
GetDecodedKeyPressFromEMS(
    OUT PULONG  KeyPress,
    IN  HANDLE  hCancelEvent  OPTIONAL
    );

#define ASCI_ETX    3   //  control-C
#define ASCI_BS     8
#define ASCI_NL     10
#define ASCI_C      67
#define ASCI_LOWER_C 99
#define ASCI_CR     13
#define ASCI_ESC    27

//
// Character codes are passed around as ULONGs within setup.
// The low word is a Unicode character value; the high word
// is used for various other keypresses.
//
#define KEY_PAGEUP          0x00010000
#define KEY_PAGEDOWN        0x00020000
#define KEY_UP              0x00030000
#define KEY_DOWN            0x00040000
#define KEY_LEFT            0x00050000
#define KEY_RIGHT           0x00060000
#define KEY_HOME            0x00070000
#define KEY_END             0x00080000
#define KEY_INSERT          0x00090000
#define KEY_DELETE          0x000a0000
#define KEY_F1              0x00110000
#define KEY_F2              0x00120000
#define KEY_F3              0x00130000
#define KEY_F4              0x00140000
#define KEY_F5              0x00150000
#define KEY_F6              0x00160000
#define KEY_F7              0x00170000
#define KEY_F8              0x00180000
#define KEY_F9              0x00190000
#define KEY_F10             0x001a0000
#define KEY_F11             0x001b0000
#define KEY_F12             0x001c0000
//
// PID function prototypes.
//
BOOL
InitializePidVariables(
    );

BOOL
ValidatePidEx(
    LPTSTR PID, 
    BOOL *pbStepup, 
    BOOL *bSelect
    );

BOOL
ValidatePid30(
    LPTSTR aPID
    );

BOOL
ValidatePid30Assemble(
    LPTSTR Edit1,
    LPTSTR Edit2,
    LPTSTR Edit3,
    LPTSTR Edit4,
    LPTSTR Edit5
    );

BOOL
GetPid( 
    IN PWSTR   PidString, 
    IN ULONG   BufferSize,
    IN HANDLE  hCancelEvent
    );

//
// EULA function prototypes
//
BOOL
PresentEula(
    HANDLE  hCancelEvent
    );

//
// Core Functionality
//

INT_PTR CALLBACK 
UserInputAbortProc(
    HWND hwndDlg,  // handle to dialog box
    UINT uMsg,     // message
    WPARAM wParam, // first message parameter
    LPARAM lParam  // second message parameter
    );

DWORD    
PromptForUserInputThreadOverHeadlessConnection(
    PVOID params
    );

DWORD    
PromptForUserInputThreadViaLocalDialog(
    PVOID params
    );

BOOL
LoadStringResource(
    PUNICODE_STRING  pUnicodeString,
    INT              MsgId
    );

BOOL
WriteResourceMessage(
    ULONG   MessageID
    );

BOOL
PromptForPassword(
    IN PWSTR   Password,
    IN ULONG   BufferSize,
    IN HANDLE  hCancelEvent
    );

DWORD
ProcessUnattendFile(
    BOOL    FixUnattendFile,
    PBOOL   ProcessingRequired, OPTIONAL
    PHANDLE hCancelEvent OPTIONAL
    );

extern "C"
BOOL
CheckEMS(
    IN int argc,
    WCHAR *argvW[]
    );