What are the visa & residency requirements in Bulgaria?

"In order to visit Bulgaria, foreign nationals must obtain a visa from a Bulgarian embassy or consulate prior to their arrival. The process of applying for a visa involves submitting a completed application form, a valid passport, two passport-sized photographs, and any other documents required by the embassy or consulate. In order to obtain residency in Bulgaria, foreign nationals must apply for a long-term residence permit. The process of applying for a residence permit involves submitting a completed application form, a valid passport, two passport-sized photographs, proof of financial means, proof of health insurance, and any other documents required by the embassy or consulate. Additionally, applicants must provide proof of a valid reason for residence, such as employment, study, or family reunification," remarked another expat in Bulgaria.