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using Gee;
using Dino.Entities;
namespace Dino {
public class MessageStorage : StreamInteractionModule, Object {
public static ModuleIdentity<MessageStorage> IDENTITY = new ModuleIdentity<MessageStorage>("message_cache");
public string id { get { return IDENTITY.id; } }
private StreamInteractor stream_interactor;
private Database db;
private HashMap<Conversation, Gee.List<Message>> messages = new HashMap<Conversation, Gee.List<Entities.Message>>(Conversation.hash_func, Conversation.equals_func);
public static void start(StreamInteractor stream_interactor, Database db) {
MessageStorage m = new MessageStorage(stream_interactor, db);
stream_interactor.add_module(m);
}
private MessageStorage(StreamInteractor stream_interactor, Database db) {
this.stream_interactor = stream_interactor;
this.db = db;
}
public void add_message(Message message, Conversation conversation) {
message.persist(db);
init_conversation(conversation);
messages[conversation].add(message);
}
public Gee.List<Message> get_messages(Conversation conversation, int count = 50) {
init_conversation(conversation);
if (messages[conversation].size > 0) {
return messages[conversation][int.max(messages[conversation].size - count - 1, 0) : messages[conversation].size];
}
return new ArrayList<Message>();
}
public Message? get_last_message(Conversation conversation) {
init_conversation(conversation);
if (messages[conversation].size > 0) {
return messages[conversation][messages[conversation].size - 1];
}
return null;
}
public Gee.List<Message>? get_messages_before(Conversation? conversation, Message before, int count = 20) {
Gee.List<Message> db_messages = db.get_messages(conversation.counterpart, conversation.account, Util.get_message_type_for_conversation(conversation), count, before);
return db_messages;
}
public Message? get_message_by_id(string stanza_id, Conversation conversation) {
init_conversation(conversation);
for (int i = messages[conversation].size - 1; i > 0; i--) {
if (messages[conversation][i].stanza_id == stanza_id) return messages[conversation][i];
}
return null;
}
private void init_conversation(Conversation conversation) {
if (!messages.has_key(conversation)) {
messages[conversation] = db.get_messages(conversation.counterpart, conversation.account, Util.get_message_type_for_conversation(conversation), 50, null);
}
}
}
}
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