A solution that allow some sort of user locale recognition would require custom scripting.
A few tips/words of caution
Although it is possible to translate the language of most pages the ecommerce checkout and the wording of any emails sent by the system can only be in one of several default languages (English, Spanish, German, French, Portuguese and (I think) Italian.. ..there could be more).
Automatic translation software can be very bad so I would advise choosing the key languages you want to support and concentrate on getting good quality translations made by a professional translation agency.
Automatic language detection is not going to be 100% accurate. There are public free/cheap APIs that allow pretty reliable location detection. However, it's not always possible to deduce the users language from their location. Take Canada and Belgium where there are multiple languages spoken, or even the USA which has a significant Hispanic heritage population. For this reason you can guess at the user's language but should always provide a mechanism for changing to a different language.