add map

internal/repos/game_map_repo/repo.go

@@ -0,0 +1,53 @@
+package game_map_repo
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+type Item struct {
+	GameID int
+	Kind   string
+	ItemID int
+	X      int
+	Y      int
+	Hidden bool
+}
+
+type Repo struct{ 
+	pool *pgxpool.Pool 
+}
+
+func New(pool *pgxpool.Pool) *Repo { 
+	return &Repo{pool: pool} 
+}
+
+func (r *Repo) Ensure(ctx context.Context, gameID int, kind string, itemID int) error {
+	_, err := r.pool.Exec(ctx, `
+		INSERT INTO game_map_items (game_id, kind, item_id)
+		VALUES ($1, $2, $3) ON CONFLICT (game_id, kind, item_id) DO NOTHING`, gameID, kind, itemID)
+	return err
+}
+
+func (r *Repo) List(ctx context.Context, gameID int) ([]Item, error) {
+	rows, err := r.pool.Query(ctx, `SELECT game_id, kind, item_id, x, y, hidden FROM game_map_items WHERE game_id = $1 ORDER BY kind, item_id`, gameID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []Item
+	for rows.Next() {
+		var item Item
+		if err := rows.Scan(&item.GameID, &item.Kind, &item.ItemID, &item.X, &item.Y, &item.Hidden); err != nil {
+			return nil, err
+		}
+		items = append(items, item)
+	}
+	return items, rows.Err()
+}
+
+func (r *Repo) Update(ctx context.Context, item Item) error {
+	_, err := r.pool.Exec(ctx, `UPDATE game_map_items SET x = $4, y = $5, hidden = $6 WHERE game_id = $1 AND kind = $2 AND item_id = $3`, item.GameID, item.Kind, item.ItemID, item.X, item.Y, item.Hidden)
+	return err
+}