added server-side user unread_count to rooms

db/init.sql

@@ -10,14 +10,14 @@ CREATE TABLE IF NOT EXISTS user_ (
 CREATE TABLE IF NOT EXISTS friendship_ (
   user_first INT NOT NULL REFERENCES user_(id) ON DELETE CASCADE,
   user_second INT NOT NULL REFERENCES user_(id) ON DELETE CASCADE,
-  created_at TIMESTAMP NOT NULL DEFAULT now(),
+  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
   PRIMARY KEY (user_first, user_second)
 );
 
 CREATE TABLE IF NOT EXISTS friend_request_ (
   sender INT NOT NULL REFERENCES user_(id) ON DELETE CASCADE,
   receiver INT NOT NULL REFERENCES user_(id) ON DELETE CASCADE,
-  sent_at TIMESTAMP NOT NULL DEFAULT now(),
+  sent_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
   PRIMARY KEY (sender, receiver),
   CHECK (sender <> receiver)
 );
@@ -33,6 +33,7 @@ CREATE TABLE IF NOT EXISTS room_ (
 CREATE TABLE IF NOT EXISTS membership_ (
   user_id INT REFERENCES user_(id),
   room INT REFERENCES room_(id),
+  last_read_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
   PRIMARY KEY (user_id, room)
 );
 
@@ -40,7 +41,7 @@ CREATE TABLE IF NOT EXISTS room_invite_ (
   sender INT NOT NULL REFERENCES user_(id) ON DELETE CASCADE,
   receiver INT NOT NULL REFERENCES user_(id) ON DELETE CASCADE,
   room INT NOT NULL,
-  sent_at TIMESTAMP NOT NULL DEFAULT now(),
+  sent_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
   PRIMARY KEY (sender, receiver),
   CHECK (sender <> receiver)
 );
@@ -52,7 +53,7 @@ CREATE TABLE IF NOT EXISTS message_ (
   room INT REFERENCES room_(id) NOT NULL,
   message_type VARCHAR(32) NOT NULL,
   content TEXT NOT NULL,
-  sent_at TIMESTAMP NOT NULL DEFAULT now()
+  sent_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
 );
 
 CREATE TABLE ws_token_ (
@@ -60,22 +61,40 @@ CREATE TABLE ws_token_ (
   expires_at TIMESTAMPTZ NOT NULL
 );
 
+-- ==== INDICES ====
+CREATE INDEX idx_message_room_sent_at ON message_ (room, sent_at);
+CREATE UNIQUE INDEX idx_membership_user_room ON membership_ (user_id, room) INCLUDE (last_read_at);
+
 -- Timestamp creation
-CREATE OR REPLACE FUNCTION create_notification_timestamp()
-RETURNS trigger
-AS $$
-BEGIN
-  NEW.sent_at := CURRENT_TIMESTAMP;
-  RETURN NEW;
-END;
-$$ LANGUAGE plpgsql;
-
-CREATE OR REPLACE TRIGGER insert_message
-BEFORE INSERT ON message_
-FOR EACH ROW
-EXECUTE FUNCTION create_notification_timestamp();
-
-CREATE OR REPLACE TRIGGER insert_room_invite
-BEFORE INSERT ON room_invite_
-FOR EACH ROW
-EXECUTE FUNCTION create_notification_timestamp();
+-- CREATE OR REPLACE FUNCTION create_notification_timestamp()
+-- RETURNS trigger
+-- AS $$
+-- BEGIN
+--   NEW.sent_at := CURRENT_TIMESTAMP;
+--   RETURN NEW;
+-- END;
+-- $$ LANGUAGE plpgsql;
+--
+-- CREATE OR REPLACE TRIGGER insert_message
+-- BEFORE INSERT ON message_
+-- FOR EACH ROW
+-- EXECUTE FUNCTION create_notification_timestamp();
+--
+-- CREATE OR REPLACE TRIGGER insert_room_invite
+-- BEFORE INSERT ON room_invite_
+-- FOR EACH ROW
+-- EXECUTE FUNCTION create_notification_timestamp();
+--
+-- CREATE OR REPLACE FUNCTION create_membership_timestamp()
+-- RETURNS trigger
+-- AS $$
+-- BEGIN
+--   NEW.last_read_at = CURRENT_TIMESTAMP;
+--   RETURN NEW;
+-- END;
+-- $$ LANGUAGE plpgsql;
+--
+-- CREATE OR REPLACE TRIGGER insert_membership
+-- BEFORE INSERT ON membership_
+-- FOR EACH ROW
+-- EXECUTE FUNCTION create_membership_timestamp();