package server

import (
	"log"
	"database/sql"
	"github.com/spf13/viper"
	_ "github.com/lib/pq"
)

func InitDatabase(config *viper.Viper) *sql.DB {
	connectionString := config.GetString("database.connection_string")
	driverName := config.GetString("database.driver_name")
	if connectionString == "" {
		log.Fatalf("Database connection string is missing")
	}
	dbHandler, err := sql.Open(driverName, connectionString)
	if err != nil {
		log.Fatalf("Error while initializing database: %v", err)
	}
	err = dbHandler.Ping()
	if err != nil {
		dbHandler.Close()
		log.Fatalf("Error while validating database: %v", err)
	}
	return dbHandler
}