pub(all) struct FileEntry {
  path : String
  content : String
}

pub struct FileHash {
  path : String
  hash : String
  size : Int
} derive(Eq)

pub struct Manifest {
  version : String
  package_name : String
  package_version : String
  total_files : Int
  total_size : Int
  created_at : String
  files : Array[FileHash]
}

fn compute_file_hash(entry : FileEntry) -> FileHash

fn generate_manifest(package_name : String, package_version : String, entries : Array[FileEntry]) -> Manifest

fn hash_string(content : String) -> String

fn manifest_from_json(json : String) -> Manifest?

fn manifest_summary(manifest : Manifest) -> String

fn manifest_to_json(manifest : Manifest) -> String

fn sha256(data : String) -> String

fn slice_chars_(s : String, start : Int, end_ : Int) -> String

fn take_chars_(s : String, n : Int) -> String

fn verify_manifest(manifest : Manifest, entries : Array[FileEntry]) -> Array[String]