#include <Matrix.h>

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

#include <string.h>

UserID *
MatrixParseID(char *user)
{
    UserID *ret = NULL;
    char *localstart, *serverstart;
    if (!user || *user != '@')
    {
        return NULL;
    }

    localstart = user + 1;
    serverstart = strchr(user, ':');
    if (!*localstart || !serverstart || localstart == serverstart)
    {
        return NULL;
    }
    if (!*++serverstart)
    {
        return NULL;
    }

    ret = Malloc(sizeof(*ret));
    memset(ret, '\0', sizeof(*ret));
    memcpy(ret->localpart, localstart, serverstart - localstart - 1);
    memcpy(ret->server, serverstart, strlen(serverstart));

    return ret;
}
UserID *
MatrixParseIDFromMTO(Uri *uri)
{
    UserID *id = NULL;
    char *path, *params, *decoded;
    if (!uri)
    {
        return NULL;
    }

    if (!StrEquals(uri->proto, "https") || !StrEquals(uri->host, "matrix.to"))
    {
        return NULL;
    }
    if (strncmp(uri->path, "/#/", 3))
    {
        return NULL;
    }
    path = StrDuplicate(uri->path + 3);
    params = path ? strchr(path, '?') : NULL;
    if (params)
    {
        *params = '\0';
    }
    decoded = HttpUrlDecode(path);
    id = MatrixParseID(decoded);
    Free(decoded);
    Free(path);

    return id;
}