require 'kvm/log'

module KVM
  module Subversion
    # define class/static var
    @@SVN_ROOT="https://test.kuali.org/svn/"
    # no attr_* helpers for *class* variables :(
    def self.svn_root=(val); @@SVN_ROOT = val; end
    def self.svn_root; @@SVN_ROOT; end

    RICE_SERVER_DB_REPO_PATH="rice-cfg-dbs"
    RICE_CLIENT_DB_REPO_PATH="rice-cfg-dbs/rice-client-db"
    IMPEX_TOOL_REPO_PATH="kul-cfg-dbs"
    
    def self.checkout(base_dir, repo, path)
      dir = checkout_path(base_dir, repo, path)
      url = svn_url(repo, path)
      LOG.debug url
      command = "svn co #{url} #{dir}"
      LOG.debug command 
      system(command) || raise("Error checking out #{repo} (#{path})")
    end
    
    def self.svn_url(repo, path)
      "#{@@SVN_ROOT}/#{repo}/#{path}"
    end
  
    def self.update(base_dir, repo, path)
      dir = checkout_path(base_dir, repo, path)
      system("svn update #{dir}") || raise("Error updating #{repo} (#{path})")
    end
    
    def self.checkout_path(base_dir, repo, path="trunk")
      File.expand_path(checkout_dirname(repo, path), base_dir)
    end

    def self.checkout_dirname(repo, path="trunk")
      "#{repo}__#{filepathify(path)}"
    end
    
    def self.parse_dirname(name)
      repo, path_mangled = name.split("__")
      [ repo, path_mangled.gsub('_', '/') ]
    end

    protected
    
    def self.filepathify(path)
      path.gsub('/', '_')
    end
  end
end