update schema

migrations/20240727123308_initial.sql

@@ -26,7 +26,7 @@ CREATE TRIGGER lng_upd_trg
     BEFORE UPDATE
     ON languages
     FOR EACH ROW
-EXECUTE PROCEDURE lng_upd_trg_fn();
+EXECUTE FUNCTION lng_upd_trg_fn();
 
 
 
@@ -64,8 +64,11 @@ CREATE TABLE IF NOT EXISTS contest_problem
 (
     contest_id    INT          REFERENCES contests ON DELETE CASCADE,
     problem_id    INT          REFERENCES problems ON DELETE CASCADE,
+    position      INT          NOT NULL,
     position_name VARCHAR(10)  NOT NULL,     -- problem name like: A,B,A1,etc
-    UNIQUE (contest_id,problem_id)
+    UNIQUE (contest_id,problem_id),
+    UNIQUE (contest_id,position),
+    UNIQUE (contest_id,position_name)
 );
 
 CREATE INDEX ON contest_problem USING BTREE (contest_id);
@@ -81,6 +84,7 @@ CREATE TABLE IF NOT EXISTS participants
     contest_id    INT           REFERENCES contests ON DELETE CASCADE,
     name          varchar(200)  NOT NULL,
 
+    UNIQUE (user_id,contest_id),
     PRIMARY KEY (id)
 );
 
@@ -160,16 +164,48 @@ CREATE INDEX ON testruns USING BTREE (solution_id);
 
 CREATE TABLE IF NOT EXISTS participant_problem
 (
-    participand_id INT     REFERENCES participants ON DELETE CASCADE,
+    participant_id INT     REFERENCES participants ON DELETE CASCADE,
     problem_id     INT     REFERENCES problems ON DELETE CASCADE,
     result         INT     NOT NULL,
-    best_score     INT     NOT NULL
+    best_score     INT     NOT NULL,
+    penalty        INT     NOT NULL
 );
+
+CREATE FUNCTION fill_participant_result() RETURNS TRIGGER AS 
+$$
+BEGIN
+    RAISE NOTICE 'NEW.ID:%, NEW.contest_id:%', NEW.id,NEW.contest_id;
+    INSERT INTO participant_problem (participant_id,problem_id,result,best_score,penalty) SELECT NEW.id,problem_id,0,0,0 FROM contest_problem WHERE contest_id=NEW.contest_id;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER fill_participant_result_trg
+    AFTER INSERT
+    ON participants
+    FOR EACH ROW
+EXECUTE FUNCTION fill_participant_result();
+
+CREATE FUNCTION fill_problem_result() RETURNS TRIGGER AS 
+$$
+BEGIN
+    INSERT INTO participant_problem (participant_id,problem_id,result,best_score,penalty) SELECT id,NEW.problem_id,0,0,0 FROM participants WHERE contest_id=NEW.contest_id;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER fill_problem_result_trg
+    AFTER INSERT
+    ON contest_problem
+    FOR EACH ROW
+EXECUTE FUNCTION fill_problem_result();
 -- TODO: automatic creating & deleting entries on creating & deleting users & problems to contest
 -- +goose StatementEnd
 
 -- +goose Down
 DROP FUNCTION IF EXISTS lng_upd_trg_fn CASCADE;
+DROP FUNCTION IF EXISTS fill_participant_result CASCADE;
+DROP FUNCTION IF EXISTS fill_problem_result CASCADE;
 DROP TABLE IF EXISTS tests CASCADE;
 DROP TABLE IF EXISTS solutions CASCADE;
 DROP TABLE IF EXISTS languages CASCADE;