package db

import (
	"database/sql"
	"fmt"
	_ "github.com/go-sql-driver/mysql"
	"os"
)

var Conn *sql.DB

// SetupDatabaseConnection opens up & returns a SQL connection
func SetupDatabaseConnection() (*sql.DB, error) {
	var err error
	var dataSourceName = fmt.Sprintf("%s:%s@%s/%s", os.Getenv("ANA_DATABASE_USER"), os.Getenv("ANA_DATABASE_PASSWORD"), os.Getenv("ANA_DATABASE_HOST"), os.Getenv("ANA_DATABASE_NAME"))

	Conn, err = sql.Open("mysql", dataSourceName)
	if err != nil {
		return nil, err
	}

	// Open doesn't open a connection right away. Validate DSN by calling Ping().
	err = Conn.Ping()
	if err != nil {
		return nil, err
	}

	return Conn, nil
}