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public class CoreConnector {
unowned Thread thread;
bool running;
Erl.Node node;
Erl.Connection con;
Erl.Term self;
public signal void update_contact(Contact contact);
public signal void new_conversation(string jid);
public signal void receive_message(string jid, string type, string message);
public signal void sent_message(string jid, string type, string message);
private class TermStore {
public Erl.Term term;
}
static construct {
Erl.init();
}
public CoreConnector() {
running = false;
}
public bool start() {
if(running)
return true;
running = true;
node = Erl.Node("ephraim-gtk", "magiccookie", 0);
con = node.connect("ephraim-core@avalon.local");
self = Erl.mk_self_pid(node);
con.reg_send("ephraim", Erl.format("{register_ui,~w}", self));
try {
thread = Thread.create(receive, true);
return true;
} catch(ThreadError e) {
return false;
}
}
public void stop() {
if(!running)
return;
running = false;
thread.join();
con.reg_send("ephraim", Erl.format("{unregister_ui,~w}", self));
}
private void* receive() {
while(running) {
TermStore response = new TermStore();
Erl.ReceiveType ret = con.receive(out response.term, 1000);
switch(ret) {
case Erl.ReceiveType.ERROR:
if(Erl.errno == Erl.Error.TIMEDOUT)
break;
running = false;
break;
case Erl.ReceiveType.TICK:
// Do nothing
break;
case Erl.ReceiveType.MSG:
Idle.add(() => {handle_term(response); return false;});
break;
}
}
return null;
}
private Erl.Term? match(string pattern, Erl.Term term) {
Erl.Term pattern_term = Erl.format(pattern);
if(pattern_term.match(term) != 0)
return pattern_term;
else
return null;
}
private void handle_term(TermStore store) {
unowned Erl.Term term = store.term;
Erl.Term match_term;
if((match_term = match("{roster_update,JID,Name,Subscription,Groups,Resources,Avatar}", term)) != null) {
Erl.Term jid_term = match_term.var_content("JID");
if(!jid_term.is_binary())
// TODO Debug output
return;
string jid = ((string)jid_term.bin_ptr()).ndup(jid_term.bin_size());
Erl.Term name_term = match_term.var_content("Name");
string? name;
if (name_term.is_binary())
name = ((string)name_term.bin_ptr()).ndup(name_term.bin_size());
else
name = null;
Contact contact = new Contact(jid, name);
Erl.Term groups = match_term.var_content("Groups");
while(groups.is_cons()) {
Erl.Term group_term = groups.hd();
if(group_term.is_binary()) {
string group = ((string)group_term.bin_ptr()).ndup(group_term.bin_size());
contact.add_group(group);
}
groups = groups.tl();
}
Erl.Term resources = match_term.var_content("Resources");
while(resources.is_cons()) {
Erl.Term r;
if((r = match("{Name,{resource_entry,Priority,Show,Status}}", resources.hd())) != null) {
Erl.Term rname_term = r.var_content("Name");
Erl.Term prio_term = r.var_content("Priority");
Erl.Term show_term = r.var_content("Show");
Erl.Term status_term = r.var_content("Status");
if(rname_term.is_binary() && prio_term.is_integer() && show_term.is_atom()) {
string rname = ((string)rname_term.bin_ptr()).ndup(rname_term.bin_size());
int prio = prio_term.int_value();
Contact.Show show = Contact.Show.UNDEFINED;
switch((string)show_term.atom_ptr()) {
case "online":
show = Contact.Show.ONLINE;
break;
case "away":
show = Contact.Show.AWAY;
break;
case "chat":
show = Contact.Show.CHAT;
break;
case "dnd":
show = Contact.Show.DND;
break;
case "xa":
show = Contact.Show.XA;
break;
}
string? status = null;
if(status_term.is_binary())
status = ((string)status_term.bin_ptr()).ndup(status_term.bin_size());
contact.update_resource(rname, new Contact.Resource(prio, show, status));
}
}
resources = resources.tl();
}
Erl.Term avatar = match("{avatar,Data}", match_term.var_content("Avatar"));
if(avatar != null) {
Erl.Term avatarData = avatar.var_content("Data");
if(avatarData.is_binary()) {
InputStream avatarStream = new MemoryInputStream.from_data(avatarData.bin_ptr(), avatarData.bin_size(), null);
try {
contact.avatar = new Gdk.Pixbuf.from_stream_at_scale(avatarStream, 32, 32, true, null);
avatarStream.close(null);
} catch(Error e) {
// TODO Debug output
}
}
}
update_contact(contact);
}
else if((match_term = match("{new_conversation,JID}", term)) != null) {
Erl.Term jid_term = match_term.var_content("JID");
if(!jid_term.is_binary())
// TODO Debug output
return;
string jid = ((string)jid_term.bin_ptr()).ndup(jid_term.bin_size());
new_conversation(jid);
}
else if((match_term = match("{receive_message,JID,Type,Body}", term)) != null) {
Erl.Term jid_term = match_term.var_content("JID");
if(!jid_term.is_binary())
// TODO Debug output
return;
string jid = ((string)jid_term.bin_ptr()).ndup(jid_term.bin_size());
Erl.Term type_term = match_term.var_content("Type");
if(!type_term.is_atom())
// TODO Debug output
return;
string type = ((string)type_term.atom_ptr()).ndup(type_term.atom_size());
Erl.Term body_term = match_term.var_content("Body");
if(!body_term.is_binary())
// TODO Debug output
return;
string body = ((string)body_term.bin_ptr()).ndup(body_term.bin_size());
receive_message(jid, type, body);
}
else if((match_term = match("{sent_message,JID,Type,Body}", term)) != null) {
Erl.Term jid_term = match_term.var_content("JID");
if(!jid_term.is_binary())
// TODO Debug output
return;
string jid = ((string)jid_term.bin_ptr()).ndup(jid_term.bin_size());
Erl.Term type_term = match_term.var_content("Type");
if(!type_term.is_atom())
// TODO Debug output
return;
string type = ((string)type_term.atom_ptr()).ndup(type_term.atom_size());
Erl.Term body_term = match_term.var_content("Body");
if(!body_term.is_binary())
// TODO Debug output
return;
string body = ((string)body_term.bin_ptr()).ndup(body_term.bin_size());
sent_message(jid, type, body);
}
else {
Erl.print_term(stdout, term);
stdout.printf("\n");
}
}
public void start_conversation(string jid) {
con.reg_send("ephraim", Erl.format("{start_conversation,~w}", Erl.mk_binary(jid.to_utf8())));
}
public void send_message(string jid, string type, string message) {
con.reg_send("ephraim", Erl.format("{send_message,~w,~a,~w}", Erl.mk_binary(jid.to_utf8()), type, Erl.mk_binary(message.to_utf8())));
}
}
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