push

#!/usr/bin/env ruby
repo='sickp/alpine-nginx'

def error(message)
  puts message
  puts "Usage: #{__FILE__} {major}.{minor}.{patch}-r{revision} [tag]... ]"
  exit 1
end

def execute(cmd)
  puts "=> #{cmd}"
  system(cmd) || abort
end

version, *tags = ARGV
md = version&.match(/\A(((\d+)\.\d+)\.\d+)-r\d+\z/)
case md && md[2]
when "1.17"
  puts "Pushing 1.17.x mainline..."
  possible_tags = [ md[1], md[2], 'mainline', 'latest' ]
when "1.16"
  puts "Pushing 1.16.x stable..."
  possible_tags = [ md[1], md[2], 'stable' ]
when "1.15"
  puts "Pushing 1.15.x..."
  possible_tags = [ md[1], md[2] ]
when "1.14"
  puts "Pushing 1.14.x..."
  possible_tags = [ md[1], md[2] ]
when "1.13"
  puts "Pushing 1.13.x..."
  possible_tags = [ md[1], md[2] ]
when "1.12"
  puts "Pushing 1.12.x..."
  possible_tags = [ md[1], md[2] ]
when "1.11"
  puts "Pushing 1.11.x..."
  possible_tags = [ md[1], md[2] ]
when "1.10"
  puts "Pushing 1.10.x..."
  possible_tags = [ md[1], md[2] ]
else
  error("Unknown version: #{md ? md[2] : 'missing'}")
end

dockerfile = File.join(File.dirname(__FILE__), 'versions', version, 'Dockerfile')
error("Missing Dockerfile #{dockerfile}") unless File.file?(dockerfile)

bad_tags = tags - possible_tags
puts "Possible tags: #{possible_tags.join(', ')}"
error('Must provide at least one tag.') if tags.empty?
puts "Given tags: #{tags.join(', ')}"
error("Illegal tag(s): #{bad_tags.join(', ')}") unless bad_tags.empty?

puts "==== Pushing #{repo}:#{version} ===="
execute("docker image push #{repo}:#{version}")

tags.each do |tag|
  puts "==== Tagging #{repo}:#{tag} ===="
  execute("docker image tag #{repo}:#{version} #{repo}:#{tag}")
  execute("docker image push #{repo}:#{tag}")
  execute("docker image rm #{repo}:#{tag}")
end