#include "XMPPThread/internal.h"

#include <Parsee.h>
#include <XMPP.h>
#include <XML.h>

#include <Cytoplasm/Memory.h>
#include <Cytoplasm/Json.h>
#include <Cytoplasm/Str.h>
#include <Cytoplasm/Log.h>
#include <Cytoplasm/Db.h>

static XMLElement *
CreateAvatarRequest(char *from, char *to, char *avatar_id)
{
    XMLElement *iq_req, *pubsub, *items, *item;
    char *id;
    iq_req = XMLCreateTag("iq");
    XMLAddAttr(iq_req, "from", from);
    XMLAddAttr(iq_req, "to", to);
    XMLAddAttr(iq_req, "id", (id = StrRandom(16)));
    XMLAddAttr(iq_req, "type", "get");

    pubsub = XMLCreateTag("pubsub");
    XMLAddAttr(pubsub, "xmlns", "http://jabber.org/protocol/pubsub");
    XMLAddChild(iq_req, pubsub);

    items = XMLCreateTag("items");
    XMLAddAttr(items, "node", "urn:xmpp:avatar:data");
    XMLAddChild(pubsub, items);

    item = XMLCreateTag("item");
    XMLAddAttr(item, "id", avatar_id);
    XMLAddChild(items, item);

    Free(id);
    return iq_req;
}


void
PEPAvatarEvent(PEPManager *m, XMLElement *stanza, XMLElement *item)
{
    XMPPThreadInfo *info = PEPManagerCookie(m);
    XMPPComponent *jabber = info->jabber;
    ParseeData *args = info->args;
    DbRef *avatars;
    HashMap *json;

    char *publisher = HashMapGet(item->attrs, "publisher");
    char *id = HashMapGet(item->attrs, "id");
    char *mxid;

    avatars = DbLock(args->db, 1, "avatars");
    if (!avatars)
    {
        avatars = DbCreate(args->db, 1, "avatars");
    }
    json = DbJson(avatars);

    mxid = GrabString(json, 1, publisher);
    if (mxid && StrEquals(mxid, id))
    {
        /* We have nothing to do. */
        goto end;
    }

    /* We need to download the media to push it. Let's submit a pubsub request. */
    {
        char *from = HashMapGet(stanza->attrs, "to");
        char *to = HashMapGet(stanza->attrs, "from");
        char *url = HashMapGet(item->attrs, "url");
        XMLElement *request = CreateAvatarRequest(from, to, id);

        XMPPSendStanza(jabber, request, args->config->max_stanza_size);
        XMLFreeElement(request);

        (void) url; /* TODO */
    }

end:
    DbUnlock(args->db, avatars);
}