#include <FileInfo.h>

#include <Cytoplasm/Memory.h>
#include <Cytoplasm/Str.h>

#include <string.h>
#include <stdlib.h>

static int
GetField(XMLElement *elem)
{
    XMLElement *child;
    if (!elem || ArraySize(elem->children) != 1)
    {
        return 0;
    }

    child = ArrayGet(elem->children, 0);

    return strtol(child->data, NULL, 10);
}

FileInfo *
FileInfoFromXMPP(XMLElement *stanza)
{
    FileInfo *info;
    XMLElement *reference, *sims, *file;

    if (!stanza)
    {
        return NULL;
    }

    reference = XMLookForTKV(stanza, 
        "reference", "xmlns", "urn:xmpp:reference:0"
    );
    sims = XMLookForTKV(reference,
        "media-sharing", "xmlns", "urn:xmpp:sims:1"
    );
    file = XMLookForTKV(sims,
        "file", "xmlns", "urn:xmpp:jingle:apps:file-transfer:5"
    );
    /* TODO: We'll definitely need MIME types to do things like 
     * WebXDC */
    if (!file)
    {
        return NULL;
    }

    info = Malloc(sizeof(*info));


    info->width = GetField(XMLookForUnique(file, "width"));
    info->height = GetField(XMLookForUnique(file, "height"));
    info->size = GetField(XMLookForUnique(file, "size"));
    return info;
}

void 
FileInfoFree(FileInfo *info)
{
    if (!info)
    {
        return;
    }

    Free(info);
}