What are the visa & residency requirements in Sri Lanka?

"To apply for a visa to Sri Lanka, travelers must submit an online application form and provide a valid passport, two passport-sized photographs, and proof of sufficient funds. Depending on the purpose of the visit, additional documents may be required. Once the application is approved, the visa will be issued and sent to the applicant. To apply for residency in Sri Lanka, applicants must submit an application form, a valid passport, two passport-sized photographs, proof of sufficient funds, and a valid work permit. Depending on the purpose of the residency, additional documents may be required. Once the application is approved, the residency permit will be issued and sent to the applicant," mentioned another expat when asked about moving to Sri Lanka.