first commit

internal/db/postgres.go

@@ -0,0 +1,16 @@
+package db
+
+import (
+	"database/sql"
+	"fmt"
+
+	_ "github.com/lib/pq"
+)
+
+func Connect(host, port, user, password, dbname, sslmode string) (*sql.DB, error) {
+	dsn := fmt.Sprintf(
+		"host=%s port=%s user=%s password=%s dbname=%s sslmode=%s",
+		host, port, user, password, dbname, sslmode,
+	)
+	return sql.Open("postgres", dsn)
+}