# encoding: utf-8

usage 'deploy [options]'
summary 'deploy the compiled site'
description "
Deploys the compiled site. The compiled site contents in the output directory will be uploaded to the destination, which is specified using the `--target` option.
"

option :t, :target,           'specify the location to deploy to (default: `default`)', argument: :required
flag :C, :'no-check',       'do not run the issue checks marked for deployment'
flag :L, :list,             'list available locations to deploy to'
flag :D, :'list-deployers', 'list available deployers'
option :n, :'dry-run',        'show what would be deployed'

module Nanoc::CLI::Commands
  class Deploy < ::Nanoc::CLI::CommandRunner
    def run
      load_site

      # List deployers
      if options[:'list-deployers']
        deployers      = Nanoc::Int::PluginRegistry.instance.find_all(Nanoc::Extra::Deployer)
        deployer_names = deployers.keys.sort_by(&:to_s)
        puts 'Available deployers:'
        deployer_names.each do |name|
          puts "  #{name}"
        end
        return
      end

      # Get & list configs
      deploy_configs = site.config.fetch(:deploy, {})

      if options[:list]
        if deploy_configs.empty?
          puts 'No deployment configurations.'
        else
          puts 'Available deployment configurations:'
          deploy_configs.keys.each do |name|
            puts "  #{name}"
          end
        end
        return
      end

      # Can't proceed further without a deploy config
      if deploy_configs.empty?
        raise Nanoc::Int::Errors::GenericTrivial, 'The site has no deployment configurations.'
      end

      # Get target
      target = options.fetch(:target, :default).to_sym
      config = deploy_configs.fetch(target) do
        raise Nanoc::Int::Errors::GenericTrivial, "The site has no deployment configuration for #{target}."
      end

      # Get deployer
      names = Nanoc::Extra::Deployer.all.keys
      name = config.fetch(:kind) do
        $stderr.puts 'Warning: The specified deploy target does not have a kind attribute. Assuming rsync.'
        'rsync'
      end
      deployer_class = Nanoc::Extra::Deployer.named(name)
      if deployer_class.nil?
        raise Nanoc::Int::Errors::GenericTrivial, "The specified deploy target has an unrecognised kind “#{name}” (expected one of #{names.join(', ')})."
      end

      # Check
      unless options[:'no-check']
        runner = Nanoc::Extra::Checking::Runner.new(site)
        if runner.dsl_present?
          puts 'Running issue checks…'
          ok = runner.run_for_deploy
          unless ok
            puts 'Issues found, deploy aborted.'
            return
          end
          puts 'No issues found. Deploying!'
        end
      end

      # Run
      deployer = deployer_class.new(
        site.config[:output_dir],
        config,
        dry_run: options[:'dry-run'])
      deployer.run
    end
  end
end

runner Nanoc::CLI::Commands::Deploy