Add getShop to DAO, preparing to refactor shop loading

src/main/java/database/JdbiConfig.java

@@ -7,21 +7,32 @@ import database.maker.MakerReagentRowMapper;
 import database.maker.MakerRecipeRowMapper;
 import database.note.NoteRowMapper;
 import database.shop.ShopItemRowMapper;
+import database.shop.ShopRowMapper;
 import org.jdbi.v3.core.Jdbi;
+import org.jdbi.v3.core.mapper.RowMapper;
 
 import javax.sql.DataSource;
+import java.util.List;
 
 public final class JdbiConfig {
     private JdbiConfig() {}
 
     public static Jdbi createConfigured(DataSource dataSource) {
-        return Jdbi.create(dataSource)
-                .registerRowMapper(new NoteRowMapper())
-                .registerRowMapper(new MakerReagentRowMapper())
-                .registerRowMapper(new MakerRecipeRowMapper())
-                .registerRowMapper(new MakerIngredientRowMapper())
-                .registerRowMapper(new MonsterDropRowMapper())
-                .registerRowMapper(new GlobalMonsterDropRowMapper())
-                .registerRowMapper(new ShopItemRowMapper());
+        final Jdbi jdbi = Jdbi.create(dataSource);
+        rowMappers().forEach(jdbi::registerRowMapper);
+        return jdbi;
+    }
+
+    private static List<RowMapper<?>> rowMappers() {
+        return List.of(
+                new NoteRowMapper(),
+                new MakerReagentRowMapper(),
+                new MakerRecipeRowMapper(),
+                new MakerIngredientRowMapper(),
+                new MonsterDropRowMapper(),
+                new GlobalMonsterDropRowMapper(),
+                new ShopRowMapper(),
+                new ShopItemRowMapper()
+        );
     }
 }

src/main/java/database/shop/Shop.java

@@ -0,0 +1,4 @@
+package database.shop;
+
+public record Shop(int id, int npcId) {
+}

src/main/java/database/shop/ShopDao.java

@@ -6,6 +6,7 @@ import org.jdbi.v3.core.Handle;
 import org.jdbi.v3.core.JdbiException;
 
 import java.util.List;
+import java.util.Optional;
 
 public class ShopDao {
     private final PgDatabaseConnection connection;
@@ -14,6 +15,20 @@ public class ShopDao {
         this.connection = connection;
     }
 
+    public Optional<Shop> getShop(int shopId) {
+        try (Handle handle = connection.getHandle()) {
+            return handle.createQuery("""
+                            SELECT *
+                            FROM shop
+                            WHERE id = ?;""")
+                    .bind(0, shopId)
+                    .mapTo(Shop.class)
+                    .findOne();
+        } catch (JdbiException e) {
+            throw new DaoException("Failed to get shop with id %d".formatted(shopId), e);
+        }
+    }
+
     public List<ShopItem> getShopItems(int shopId) {
         try (Handle handle = connection.getHandle()) {
             return handle.createQuery("""

src/main/java/database/shop/ShopRowMapper.java

@@ -0,0 +1,17 @@
+package database.shop;
+
+import org.jdbi.v3.core.mapper.RowMapper;
+import org.jdbi.v3.core.statement.StatementContext;
+
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+public class ShopRowMapper implements RowMapper<Shop> {
+
+    @Override
+    public Shop map(ResultSet rs, StatementContext ctx) throws SQLException {
+        final int shopId = rs.getInt("id");
+        final int npcId = rs.getInt("npc_id");
+        return new Shop(shopId, npcId);
+    }
+}