Changed the structure of the whole application, should be no changes to functionality.

pkg/db/dbHelper.go

@@ -0,0 +1,61 @@
+package db
+
+import (
+	"context"
+	"fmt"
+	"github.com/jackc/pgx/v4/pgxpool"
+	"os"
+)
+
+var pool *pgxpool.Pool
+
+func InitDB(host string, port int, user string, password string, dbname string) {
+
+	psqlInfo := fmt.Sprintf("host=%s port=%d user=%s "+
+		"password=%s dbname=%s sslmode=disable",
+		host, port, user, password, dbname)
+
+	fmt.Println(psqlInfo)
+
+	var err error
+	pool, err = pgxpool.Connect(context.Background(), psqlInfo)
+	if err != nil {
+		_, _ = fmt.Fprintf(os.Stderr, "Unable to connect to database: %v\n", err)
+		os.Exit(1)
+	}
+
+	var success string
+	err = pool.QueryRow(context.Background(), "select 'Successfully connected!'").Scan(&success)
+	if err != nil {
+		_, _ = fmt.Fprintf(os.Stderr, "QueryRow failed: %v\n", err)
+		os.Exit(1)
+	}
+	fmt.Println(success)
+}
+
+func CloseDb() {
+	pool.Close()
+}
+
+func Testf() {
+	rows, dbErr := pool.Query(context.Background(), "select game_name from game")
+	if dbErr != nil {
+		_, _ = fmt.Fprintf(os.Stderr, "QueryRow failed: %v\n", dbErr)
+		os.Exit(1)
+	}
+	for rows.Next() {
+		var gameName string
+		dbErr = rows.Scan(&gameName)
+		if dbErr != nil {
+			_, _ = fmt.Fprintf(os.Stderr, "QueryRow failed: %v\n", dbErr)
+		}
+		_, _ = fmt.Fprintf(os.Stderr, "%v\n", gameName)
+	}
+}
+
+func resetGameIdSeq() {
+	_, err := pool.Query(context.Background(), "SELECT setval('game_id_seq', (SELECT MAX(id) FROM game)+1);")
+	if err != nil {
+		_, _ = fmt.Fprintf(os.Stderr, "Exec failed: %v\n", err)
+	}
+}