#!/usr/bin/env ruby
# vim: set noet sw=2 ts=2 sts=2:

require 'dencli'
require 'duperemoverb'
require 'ostruct'
require 'logger'

$logger = Logger.new STDERR
$logger.formatter =
	proc do |severity, datetime, progname, message|
		sprintf "%s %s %s\n", datetime.strftime( '%H:%M:%S.%6N'), severity[0], message
	end

begin
	cli = DenCli.new File.basename($0), <<EOF
Deduplicates extents, which were already registered by `duperemove`.
This tool does not provide scanning, yet.
If PATHx given, only extents of files which matches this pattern and equal extents will be deduplicated.  So, non-equal extents of not listed paths will be ignored.
EOF

	cli.cmd :help, '(Help)', aliases: [nil, '-h', '--help'], &lambda {|cmd=nil|
		STDERR.puts cli.help(cmd)
		exit 1
	}

	cli.cmd( :dedupe, 'deduplicates files', &lambda {|db, *dirs, tempdb: nil|
		dbfile = Pathname.new db
		raise DenCli::UsageError, "Argument 0: Database missing: #{dbfile}"  unless dbfile.exist?
		tempdb ||= Pathname.new("/run/user/#{Process.uid}").join dbfile.basename
		dr = Duperemove.new dbfile, tempdb
		dr.run dirs
		dr.finish
	}).opt( :tempdb, '--tempdb=FILE', '-t', "Use given [empty] database as temporary database. (default in /run/user/...)")

	cli.call *ARGV

rescue DenCli::UsageError
	$logger.fatal "#$!"

rescue SystemExit
	raise

rescue Interrupt
	$logger.info "was interrupted"
	exit 1

rescue
	$logger.fatal "#$! (#{$!.class})\n#{$!.backtrace.join "\n\t"}"

end