require "yaml"

require "regex"

class Package

property name : String

property author : String

property platform : String

property version : String?

property branch : String?

def initialize(@platform, @author, @name, @branch, @version); end

def path : String

"#{author}/#{name}"

end

def self.parse(uri : String) : Package

platforms = ["github", "gitlab", "bitbucket"].join("|")

regex = Regex.new("^(?:(#{platforms}):)?([^\/]+)\/([^#@]+)(?:#(\w+))?(?:@(.+))?$")

if info = regex.match(uri).not_nil!

platform = info[1]? || "github"

author = info[2]

name = info[3]

branch = info[4]?

version = info[5]?

return Package.new(platform, author, name, branch, version)

else

raise "Invalid package identifier."

end

end

def to_shard_h : Hash(YAML::Any, YAML::Any)

shard_h = Hash(String, String).new

shard_h[platform] = path

if !version.nil?

shard_h["version"] = version.not_nil!

end

if !branch.nil?

shard_h["branch"] = branch.not_nil!

end

shard_h.map { |k, v| [YAML::Any.new(k), YAML::Any.new(v)] }.to_h

end

end