// This is Free Software under GNU Affero General Public License v >= 3.0
// without warranty, see README.md and license for details.
//
// SPDX-License-Identifier: AGPL-3.0-or-later
// License-Filename: LICENSES/AGPL-3.0.txt
//
// Copyright (C) 2018 by via donau
//   – Österreichische Wasserstraßen-Gesellschaft mbH
// Software engineering by Intevation GmbH
//
// Author(s):
//  * Sascha L. Teichmann <sascha.teichmann@intevation.de>

package main

import (
	"database/sql"
	"flag"

	"github.com/jackc/pgx"
	"github.com/jackc/pgx/stdlib"
)

var (
	dbhost     = flag.String("dbhost", "localhost", "database host")
	dbport     = flag.Uint("dbport", 5432, "database port")
	dbname     = flag.String("dbname", "gemma", "database user")
	dbuser     = flag.String("dbuser", "scott", "database user")
	dbpassword = flag.String("dbpw", "tiger", "database password")
	dbssl      = flag.String("dbssl", "prefer", "database SSL mode")
)

func run(fn func(*sql.DB) error) error {

	// To ease SSL config ride a bit on parsing.
	cc, err := pgx.ParseConnectionString("sslmode=" + *dbssl)
	if err != nil {
		return err
	}

	// Do the rest manually to allow whitespace in user/password.
	cc.Host = *dbhost
	cc.Port = uint16(*dbport)
	cc.User = *dbuser
	cc.Password = *dbpassword
	cc.Database = *dbname

	db := stdlib.OpenDB(cc)
	defer db.Close()

	return fn(db)
}