package sqldb

import (
	"database/sql"
	"fmt"
	"log"
	"sprechstundentool/config"

	_ "github.com/go-sql-driver/mysql"
	_ "github.com/mattn/go-sqlite3"
)

func Connect(config config.Config) *sql.DB {
	switch config.SQL.Type {
	case "SQLite":
		return connectSQLite(config.SQL.SQLiteFile)
	case "Mysql":
		return connectMysql(config.SQL.MysqlUser,
			config.SQL.MysqlPassword,
			config.SQL.MysqlHost,
			config.SQL.MysqlPort,
			config.SQL.MysqlDatabase)
	default:
		log.Fatal("Type of database not recognised.")
	}
	return nil
}

func connectSQLite(file string) *sql.DB {
	db, err := sql.Open("sqlite3", file)
	if err != nil {
		log.Fatal(err)
	}

	return db
}

func connectMysql(user string, password string, address string, port int, database string) *sql.DB {
	db, err := sql.Open("mysql", fmt.Sprintf("%s:%s@tcp(%s:%d)/%s", user, password, address, port, database))
	if err != nil {
		log.Fatalf("Error connecting to database: %s", err)
	}

	err = db.Ping()
	// handle error
	if err != nil {
		log.Fatalf("Error pinging database: %s", err)
	}
	return db
}