feature: insert team members into tournament when selecting a team

Author: lukepolo

hasura/triggers/tournament_teams.sql

@@ -45,3 +45,56 @@ $$;
 
 DROP TRIGGER IF EXISTS tbd_tournament_team ON public.tournament_teams;
 CREATE TRIGGER tbd_tournament_team BEFORE DELETE ON public.tournament_teams FOR EACH ROW EXECUTE FUNCTION public.tbd_tournament_team();
+
+CREATE OR REPLACE FUNCTION public.tai_tournament_team()
+RETURNS TRIGGER
+LANGUAGE plpgsql
+AS $$
+DECLARE
+    max_players_per_lineup INT;
+    player_steam_id BIGINT;
+BEGIN
+    IF NEW.team_id IS NOT NULL THEN
+
+        SELECT tournament_max_players_per_lineup(t)
+        INTO max_players_per_lineup
+        FROM tournaments t
+        WHERE t.id = NEW.tournament_id;
+
+        FOR player_steam_id IN
+            SELECT tr.player_steam_id
+            FROM team_roster tr
+            LEFT JOIN tournament_team_roster ttr
+                ON ttr.player_steam_id = tr.player_steam_id
+               AND ttr.tournament_id = NEW.tournament_id
+            WHERE tr.team_id = NEW.team_id
+              AND ttr.player_steam_id IS NULL
+            ORDER BY
+                CASE tr.status
+                    WHEN 'Starter' THEN 1
+                    WHEN 'Substitute' THEN 2
+                    WHEN 'Benched' THEN 3
+                    ELSE 4
+                END
+            LIMIT max_players_per_lineup
+        LOOP
+            INSERT INTO tournament_team_roster (
+                tournament_team_id,
+                player_steam_id,
+                tournament_id
+            )
+            VALUES (
+                NEW.id,
+                player_steam_id,
+                NEW.tournament_id
+            );
+        END LOOP;
+
+    END IF;
+
+    RETURN NEW;
+END;
+$$;
+
+DROP TRIGGER IF EXISTS tai_tournament_team ON public.tournament_teams;
+CREATE TRIGGER tai_tournament_team AFTER INSERT ON public.tournament_teams FOR EACH ROW EXECUTE FUNCTION public.tai_tournament_team();