core: improve group link protocol (immediately establish group connection without first creating contact) (#3288)

src/Simplex/Chat/Migrations/M20231030_xgrplinkmem_received.hs

@@ -0,0 +1,18 @@
+{-# LANGUAGE QuasiQuotes #-}
+
+module Simplex.Chat.Migrations.M20231030_xgrplinkmem_received where
+
+import Database.SQLite.Simple (Query)
+import Database.SQLite.Simple.QQ (sql)
+
+m20231030_xgrplinkmem_received :: Query
+m20231030_xgrplinkmem_received =
+  [sql|
+ALTER TABLE group_members ADD COLUMN xgrplinkmem_received INTEGER NOT NULL DEFAULT 0;
+|]
+
+down_m20231030_xgrplinkmem_received :: Query
+down_m20231030_xgrplinkmem_received =
+  [sql|
+ALTER TABLE group_members DROP COLUMN xgrplinkmem_received;
+|]

src/Simplex/Chat/Migrations/chat_schema.sql

@@ -146,6 +146,7 @@ CREATE TABLE group_members(
   updated_at TEXT CHECK(updated_at NOT NULL),
   member_profile_id INTEGER REFERENCES contact_profiles ON DELETE SET NULL,
   show_messages INTEGER NOT NULL DEFAULT 1,
+  xgrplinkmem_received INTEGER NOT NULL DEFAULT 0,
   FOREIGN KEY(user_id, local_display_name)
   REFERENCES display_names(user_id, local_display_name)
   ON DELETE CASCADE