// THIS FILE ISOLATES THE COMPONENTS THAT INTERACT WITH NEWRPL
// THIS IS ONLY NEEDED BECAUSE OF THE REDEFINITION OF THE TYPE WORD
// IN NEWRPL CONFLICTING WITH QT

// ONLY REQUIRED UNDER MINGW
#ifdef DrawText
#undef DrawText
#endif
#define WORD _WORD

#include <cmdcodes.h>
#include <libraries.h>
#include <ui.h>

// GET A POINTER TO AN OBJECT ON THE STACK, AS WELL AS ITS SIZE
uint32_t *getrplstackobject(int level, int *size)
{
    if(level > rplDepthData())
        return 0;
    if(level < 1)
        return 0;
    if(size)
        *size = rplObjSize(rplPeekData(level));
    return rplPeekData(level);
}

int getrplobjsize(uint32_t *object)
{
 return (int)rplObjSize((WORDPTR) object);
}

void removestackobject(int level, int nitems)
{
    if(rplDepthData() >= level + nitems - 1)
        rplRemoveAtData(level, nitems);
    halScreen.DirtyFlag |=
            CMDLINE_ALLDIRTY | FORM_DIRTY | STACK_DIRTY | MENU1_DIRTY |
            MENU2_DIRTY | STAREA_DIRTY;

}

// DECOMPILES THE OBJECT AT THE STACK, THEN STORES THE SIZE OF THE STRING AND
// RETURNS A POINTER TO THE TEXT
char *getdecompiledrplobject(int level, int *strsize)
{
    if(level > rplDepthData())
        return 0;
    if(level < 1)
        return 0;

    WORDPTR newobj = rplDecompile(rplPeekData(level), DECOMP_MAXWIDTH(60));
    if(!newobj)
        return 0;
    if(strsize)
        *strsize = rplStrSize(newobj);
    return (char *)(newobj + 1);
}

// PUSH A BINARY OBJECT IN THE STACK
// OBJECT IS GIVEN BY A STREAM OF BYTES
void pushobject(char *data, int sizebytes)
{
    if(sizebytes & 3)
        return; // SIZE MUST BE MULTIPLE OF 4, OTHERWISE IT'S AN INVALID OBJECT

    WORDPTR newobj = rplAllocTempOb((sizebytes - 1) / 4);
    if(!newobj)
        return;
    memmoveb((char *)newobj, data, sizebytes);
    rplPushData(newobj);
    halScreen.DirtyFlag |=
            CMDLINE_ALLDIRTY | FORM_DIRTY | STACK_DIRTY | MENU1_DIRTY |
            MENU2_DIRTY | STAREA_DIRTY;
}

// PUSH A TEXT OBJECT IN THE STACK
void pushtext(char *data, int sizebytes)
{
    WORDPTR newobj = rplCreateStringBySize(sizebytes);
    if(!newobj)
        return;

    memmoveb((char *)(newobj + 1), data, sizebytes);

    rplPushData(newobj);
    halScreen.DirtyFlag |=
            CMDLINE_ALLDIRTY | FORM_DIRTY | STACK_DIRTY | MENU1_DIRTY |
            MENU2_DIRTY | STAREA_DIRTY;

}

// COMPILE OBJECT AT LEVEL 1 OF THE STACK
int compileobject()
{
    int strsize;
    BYTEPTR strdata;
    if(rplDepthData() < 1)
        return 0;
    if(!ISSTRING(*rplPeekData(1)))
        return 0;

    strdata = (BYTEPTR) rplPeekData(1);
    strdata += 4;
    strsize = rplStrSize(rplPeekData(1));

    WORDPTR newobj = rplCompile(strdata, strsize, 0);
    if(!newobj) {
        rplBlameError(0);
        return 0;
    }
    rplOverwriteData(1, newobj);
    return 1;
}

// THESE ARE INTERNALS FROM THE USB DRIVER - COPIED HERE FOR PROPER INTERACTION
extern BINT __usb_longoffset;
extern BINT __usb_longactbuffer;        // WHICH BUFFER IS BEING WRITTEN
extern BINT __usb_longlastsize; // LAST BLOCK SIZE IN A LONG TRANSMISSION
extern BYTEPTR __usb_rcvbuffer;
extern WORD __usb_rcvtotal __SYSTEM_GLOBAL__;
extern WORD __usb_rcvpartial __SYSTEM_GLOBAL__;
extern WORD __usb_rcvcrc __SYSTEM_GLOBAL__;
extern BINT __usb_rcvblkmark __SYSTEM_GLOBAL__; // TYPE OF RECEIVED BLOCK (ONE OF USB_BLOCKMARK_XXX CONSTANTS)
extern BYTEPTR __usb_longbuffer[2];     // DOUBLE BUFFERING FOR LONG TRANSMISSIONS OF DATA
extern BYTE __usb_rxtmpbuffer[RAWHID_TX_SIZE + 1] __SYSTEM_GLOBAL__;    // TEMPORARY BUFFER FOR NON-BLOCKING CONTROL TRANSFERS

extern BINT __usb_localbigoffset __SYSTEM_GLOBAL__;

extern volatile int __usb_paused;
extern void usb_irqservice();
extern int usb_remoteready();

int usb_transmitdata(BYTEPTR data, int nbytes)
{
    int fileid = usb_txfileopen('O');
    if(!fileid)
        return 0;

    if(!usb_filewrite(fileid, data, nbytes))
        return 0;

    if(!usb_txfileclose(fileid))
        return 0;

    return 1;
}

int usbsendtoremote(uint32_t * data, int nwords)
{
    return usb_transmitdata((BYTEPTR) data, nwords * sizeof(WORD));
}

int usbremotearchivestart()
{
    WORD program[] = {
        MKPROLOG(SECO, 2),
        CMD_USBARCHIVE,
        CMD_QSEMI,
    };

    return usb_transmitdata((BYTEPTR) & program, 3 * sizeof(WORD));
}

int usbremoterestorestart()
{
    WORD program[] = {
        MKPROLOG(SECO, 3),
        MAKESINT(3),
        CMD_USBRESTORE,
        CMD_QSEMI,
    };

    return usb_transmitdata((BYTEPTR) & program, 4 * sizeof(WORD));
}

int usbremotefwupdatestart()
{

    WORD program[] = {
        MKPROLOG(SECO, 2),
        CMD_USBFWUPDATE,
        CMD_QSEMI,
    };

    return usb_transmitdata((BYTEPTR) & program, 3 * sizeof(WORD));
}

// RECEIVE AN ENTIRE ARCHIVE, RETURN WORD COUNT, OR -1 IF ERROR
int usbreceivearchive(uint32_t * buffer, int bufsize)
{
    int count, bytesread;
    int totalfilelen;
    int fileid;
    BYTEPTR bufptr;

    if(!usb_waitfordata(4))
        return 0;

    fileid = usb_rxfileopen();

    if(usb_filetype(fileid) != 'B') {
        if(fileid) usb_rxfileclose(fileid);
        return 0;
    }

    count = 0;
    totalfilelen=-1;

    bufptr = (BYTEPTR) buffer;
    while(!usb_eof(fileid)) {

        bytesread = usb_fileread(fileid, bufptr, 4);

        if(bytesread != 4) {
            break;   // USB COMMUNICATIONS ERROR
        }


        bufptr += bytesread;

        count+=bytesread;

        if((totalfilelen==-1)&&(count>84)) {
            // CHECK FOR PROPER BACKUP HEADER
            if(buffer[0]!=TEXT2WORD('N', 'R', 'P', 'B')) break;
            // WE RECEIVED ENOUGH INFORMATION TO COMPUTE TOTAL FILE SIZE NEEDED
            totalfilelen=(buffer[10]+buffer[20])*sizeof(WORD);
            if( (totalfilelen<0)|| (totalfilelen<4096)) {
                // INVALID FILE SIZE
                break;
            }
        }


    }


    //  WE ARE DONE WITH THE TRANSMISSION
    if(!usb_rxfileclose(fileid))
        return -1;

    // IF WE DIDN'T GET THE RIGTH NUMBER OF BYTES
    if(count!=totalfilelen) return -1;

    return (count + 3) >> 2;

}

// SEND AN ENTIRE ARCHIVE, RETURN WORD COUNT, OR -1 IF ERROR
int usbsendarchive(uint32_t * buffer, int bufsize)
{
    if(!usb_isconfigured()) {
        rplError(ERR_USBNOTCONNECTED);
        return -1;
    }

    int fileid = usb_txfileopen('B');
    if(!fileid) {
        rplError(ERR_USBCOMMERROR);     // IT'S ACTUALLY OUT OF BUFFER MEMORY
        return -1;
    }

    if(!usb_filewrite(fileid, (BYTEPTR) buffer, bufsize * sizeof(WORD))) {
        rplError(ERR_USBCOMMERROR);
        bufsize = -1;
    }

    usb_txfileclose(fileid);            // DON'T CARE ABOUT ERRORS, IF THE WRITE WAS COMPLETED, THE CALC WILL PROCESS AND RESTART

    return bufsize;

}

void usbflush()
{

}

void setExceptionPoweroff()
{
    HWExceptions |= EX_POWEROFF;
}

int change_autorcv(int newfl)
{
    int fl = rplTestSystemFlag(FL_NOAUTORECV);
    if(newfl)
        rplSetSystemFlag(FL_NOAUTORECV);
    else
        rplClrSystemFlag(FL_NOAUTORECV);
    return fl;
}


void fullscreenupdate()
{
    uiClearRenderCache();
    halScreen.DirtyFlag|=FORM_DIRTY|STACK_DIRTY|CMDLINE_ALLDIRTY|MENU1_DIRTY|MENU2_DIRTY|STAREA_DIRTY;
}

// Make a list with the color theme palette vlaues (64 BINTs)
// size contains the buffer maximum size, if palette doesn't fit it returns size=0
// if it fits, it returns size = actual object size in words
// and the object is stored at the buffer (list)
void palette2list(uint32_t *list,int *size)
{
    int k;
    if(*size<PALETTESIZE * 3 + 2) { *size=0; return; }  // 64 PALETTE ENTRIES, 3 WORDS PER 64-BIT BINT, PLUS PROLOG AND ENDLIST

    list[0]=MKPROLOG(DOLIST, PALETTESIZE * 3 + 1);
    for(k=0;k<PALETTESIZE;++k)
    {
        list[1+3*k]=MKPROLOG(HEXBINT,2);
        list[2+3*k]=cgl_palette[k];
        list[3+3*k]=0;
    }
    list[1+3*k]=CMD_ENDLIST;

    *size=PALETTESIZE*3+2;

}

void list2palette(uint32_t *list)
{
    int k;
    WORDPTR ptr=list+1;
    for(k=0;k<PALETTESIZE;++k)
    {
        if(*ptr==CMD_ENDLIST) break;
        if(ISBINT(*ptr)) cgl_palette[k]=ptr[1];
        ptr=rplSkipOb(ptr);
    }
}

// Get the size of the palette to outside the RPL world
int palettesize()
{
    return PALETTESIZE;
}