Roster versioning

3 files changed, 120 insertions, 23 deletions

diff --git a/libdino/src/application.vala b/libdino/src/application.vala
index 1ce0bca4..c8834288 100644
--- a/libdino/src/application.vala
+++ b/libdino/src/application.vala
@@ -30,7 +30,7 @@ public class Dino.Application : Gtk.Application {
         CounterpartInteractionManager.start(stream_interaction);
         PresenceManager.start(stream_interaction);
         MucManager.start(stream_interaction);
-        RosterManager.start(stream_interaction);
+        RosterManager.start(stream_interaction, db);
         ConversationManager.start(stream_interaction, db);
         ChatInteraction.start(stream_interaction);
 
diff --git a/libdino/src/service/database.vala b/libdino/src/service/database.vala
index 021d1c21..2836751f 100644
--- a/libdino/src/service/database.vala
+++ b/libdino/src/service/database.vala
@@ -115,6 +115,31 @@ public class Database : Qlite.Database {
         }
     }
 
+    public class RosterTable : Table {
+        public Column<int> account_id = new Column.Integer("account_id");
+        public Column<string> jid = new Column.Text("jid");
+        public Column<string> name = new Column.Text("name");
+        public Column<string> subscription = new Column.Text("subscription");
+
+        internal RosterTable(Database db) {
+            base(db, "roster");
+            init({account_id, jid, name, subscription});
+            unique({account_id, jid}, "IGNORE");
+        }
+    }
+
+    public class AccountKeyValueTable : Table {
+        public Column<int> account_id = new Column.Integer("account_id");
+        public Column<string> key = new Column.Text("key");
+        public Column<string> value = new Column.Text("value");
+
+        internal AccountKeyValueTable(Database db) {
+            base(db, "account_key_value");
+            init({account_id, key, value});
+            unique({account_id, key}, "IGNORE");
+        }
+    }
+
     public AccountTable account { get; private set; }
     public JidTable jid { get; private set; }
     public MessageTable message { get; private set; }
@@ -122,6 +147,8 @@ public class Database : Qlite.Database {
     public ConversationTable conversation { get; private set; }
     public AvatarTable avatar { get; private set; }
     public EntityFeatureTable entity_feature { get; private set; }
+    public RosterTable roster { get; private set; }
+    public AccountKeyValueTable account_key_value { get; private set; }
 
     public Map<int, string> jid_table_cache = new HashMap<int, string>();
     public Map<string, int> jid_table_reverse = new HashMap<string, int>();
@@ -136,7 +163,9 @@ public class Database : Qlite.Database {
         conversation = new ConversationTable(this);
         avatar = new AvatarTable(this);
         entity_feature = new EntityFeatureTable(this);
-        init({ account, jid, message, real_jid, conversation, avatar, entity_feature });
+        roster = new RosterTable(this);
+        account_key_value = new AccountKeyValueTable(this);
+        init({ account, jid, message, real_jid, conversation, avatar, entity_feature, roster, account_key_value });
         exec("PRAGMA synchronous=0");
     }
 
diff --git a/libdino/src/service/roster_manager.vala b/libdino/src/service/roster_manager.vala
index bb9fbd3a..91da7579 100644
--- a/libdino/src/service/roster_manager.vala
+++ b/libdino/src/service/roster_manager.vala
@@ -13,32 +13,30 @@ public class RosterManager : StreamInteractionModule, Object {
     public signal void updated_roster_item(Account account, Jid jid, Roster.Item roster_item);
 
     private StreamInteractor stream_interactor;
+    private Database db;
+    private Gee.Map<Account, RosterStoreImpl> roster_stores = new HashMap<Account, RosterStoreImpl>(Account.hash_func, Account.equals_func);
 
-    public static void start(StreamInteractor stream_interactor) {
-        RosterManager m = new RosterManager(stream_interactor);
+    public static void start(StreamInteractor stream_interactor, Database db) {
+        RosterManager m = new RosterManager(stream_interactor, db);
         stream_interactor.add_module(m);
     }
 
-    public RosterManager(StreamInteractor stream_interactor) {
+    public RosterManager(StreamInteractor stream_interactor, Database db) {
         this.stream_interactor = stream_interactor;
+        this.db = db;
         stream_interactor.account_added.connect(on_account_added);
+        stream_interactor.module_manager.initialize_account_modules.connect((account, modules) => {
+            if (!roster_stores.has_key(account)) roster_stores[account] = new RosterStoreImpl(account, db);
+            modules.add(new Roster.VersioningModule(roster_stores[account]));
+        });
     }
 
-    public ArrayList<Roster.Item> get_roster(Account account) {
-        Core.XmppStream? stream = stream_interactor.get_stream(account);
-        ArrayList<Roster.Item> ret = new ArrayList<Roster.Item>();
-        if (stream != null) {
-            ret.add_all(stream.get_flag(Roster.Flag.IDENTITY).get_roster());
-        }
-        return ret;
+    public Collection<Roster.Item> get_roster(Account account) {
+        return roster_stores[account].get_roster();
     }
 
     public Roster.Item? get_roster_item(Account account, Jid jid) {
-        Core.XmppStream? stream = stream_interactor.get_stream(account);
-        if (stream == null) return null;
-        Xmpp.Roster.Flag? flag = stream.get_flag(Xmpp.Roster.Flag.IDENTITY);
-        if (flag == null) return null;
-        return flag.get_item(jid.bare_jid.to_string());
+        return roster_stores[account].get_item(jid);
     }
 
     public void remove_jid(Account account, Jid jid) {
@@ -53,7 +51,9 @@ public class RosterManager : StreamInteractionModule, Object {
 
     private void on_account_added(Account account) {
         stream_interactor.module_manager.get_module(account, Roster.Module.IDENTITY).received_roster.connect( (stream, roster) => {
-            on_roster_received(account, roster);
+            foreach (Roster.Item roster_item in roster) {
+                on_roster_item_updated(account, roster_item);
+            }
         });
         stream_interactor.module_manager.get_module(account, Roster.Module.IDENTITY).item_removed.connect( (stream, roster_item) => {
             removed_roster_item(account, new Jid(roster_item.jid), roster_item);
@@ -63,14 +63,82 @@ public class RosterManager : StreamInteractionModule, Object {
         });
     }
 
-    private void on_roster_received(Account account, Collection<Roster.Item> roster_items) {
-        foreach (Roster.Item roster_item in roster_items) {
-            on_roster_item_updated(account, roster_item);
+    private void on_roster_item_updated(Account account, Roster.Item roster_item) {
+        updated_roster_item(account, new Jid(roster_item.jid), roster_item);
+    }
+}
+
+public class RosterStoreImpl : Roster.Storage, Object {
+    private Account account;
+    private Database db;
+
+    private string version = "";
+    private HashMap<string, Roster.Item> items = new HashMap<string, Roster.Item>();
+
+    public class RosterStoreImpl(Account account, Database db) {
+        this.account = account;
+        this.db = db;
+
+        version = db_get_roster_version() ?? "";
+        foreach (Qlite.Row row in db.roster.select().with(db.roster.account_id, "=", account.id)) {
+            Roster.Item item = new Roster.Item();
+            item.jid = row[db.roster.jid];
+            item.name = row[db.roster.name];
+            item.subscription = row[db.roster.subscription];
+            items[item.jid] = item;
         }
     }
 
-    private void on_roster_item_updated(Account account, Roster.Item roster_item) {
-        updated_roster_item(account, new Jid(roster_item.jid), roster_item);
+    public string? get_roster_version() {
+        return version;
+    }
+
+    public Collection<Roster.Item> get_roster() {
+        return items.values;
+    }
+
+    public Roster.Item? get_item(Jid jid) {
+        return items.has_key(jid.bare_jid.to_string()) ? items[jid.bare_jid.to_string()] : null;
+    }
+
+    public void set_roster_version(string version) {
+        db.account_key_value.insert().or("REPLACE")
+            .value(db.account_key_value.account_id, account.id)
+            .value(db.account_key_value.key, "roster_version")
+            .value(db.account_key_value.value, version)
+            .perform();
+    }
+
+    public void set_roster(Collection<Roster.Item> items) {
+        db.roster.delete().with(db.roster.account_id, "=", account.id).perform();
+        foreach (Roster.Item item in items) {
+            set_item(item);
+        }
+    }
+
+    public void set_item(Roster.Item item) {
+        items[item.jid] = item;
+        db.roster.insert().or("REPLACE")
+            .value(db.roster.account_id, account.id)
+            .value(db.roster.jid, item.jid)
+            .value(db.roster.name, item.name)
+            .value(db.roster.subscription, item.subscription)
+            .perform();
+    }
+
+    public void remove_item(Roster.Item item) {
+        items.unset(item.jid);
+        db.roster.delete()
+            .with(db.roster.account_id, "=", account.id)
+            .with(db.roster.jid, "=", item.jid);
+    }
+
+    private string? db_get_roster_version() {
+        Qlite.Row? row =  db.account_key_value.select()
+            .with(db.account_key_value.account_id, "=", account.id)
+            .with(db.account_key_value.key, "=", "roster_version").iterator().get_next();
+        if (row != null) return row[db.account_key_value.value];
+        return null;
     }
 }