I am Indian, have currently One-year Resident permit (June 2019-June 2020) in Ireland as a 4-year duration Ph.D. student(June, 2019- June 2023), In this situation, If I accept an offer from Germany, which is also a Ph.D. student position for 3 years, do I need to go back to India and apply for a long-term student visa to go to Germany and start my PhD there, (assuming the fact that I sincerely resign my Ph.D. position here in Ireland)? Or, I can apply for a long-term student visa from the German embassy in Dublin?
PS: I currently possess a one year (Aug 2019- Aug 2020, 90 days at max stay)Schengen Visa from the German embassy in Dublin.