add db

migrations/0001_battleship.sql

@@ -0,0 +1,28 @@
+-- DROP OWNED BY CURRENT_USER CASCADE;
+CREATE TYPE STAT AS ENUM ('waiting', 'p1turn', 'p2turn');
+
+CREATE TABLE IF NOT EXISTS players (
+    id CHAR(16) PRIMARY KEY,
+    board CHAR(10) [10],
+    room_code CHAR(4)
+);
+
+CREATE TABLE IF NOT EXISTS rooms (
+    code CHAR(4) PRIMARY KEY,
+    player1_id CHAR(16),
+    player2_id CHAR(16),
+    stat STAT DEFAULT 'waiting'
+);
+
+ALTER TABLE players
+ADD CONSTRAINT fk_room_code FOREIGN KEY (room_code) REFERENCES rooms (code) ON DELETE
+SET NULL;
+
+ALTER TABLE rooms
+ADD CONSTRAINT fk_player1 FOREIGN KEY (player1_id) REFERENCES players (id) ON DELETE
+SET NULL,
+    ADD CONSTRAINT fk_player2 FOREIGN KEY (player2_id) REFERENCES players (id) ON DELETE
+SET NULL;
+
+CREATE INDEX idx_player_room_code ON players (room_code);
+CREATE INDEX idx_room_status ON rooms (stat);