No, it is not that easy to get a Portuguese passport.
You have to live legally
in Portugal for six years (3 years if you are married to a Portuguese national), you have to pass a Portuguese language test and you need to have a clean Portuguese criminal record.
You need to provide a certified translation of all your documents (e.g. birth certificate), as well as the criminal record from your country (translated).
You then submit the application and wait (can take a few months).
The application is quite cheap though (compared to the UK), only about 250 euros.
More information here: https://justica.gov.pt/Como-obter-nacio ... nos-6-anos