#!/usr/bin/env ruby

$LOAD_PATH.unshift(File.join(File.dirname(__FILE__), *%w(.. lib)))

require "optparse"
require "caravan"

options = {}
# rubocop:disable Metrics/BlockLength
option_parser = OptionParser.new do |opts|
  opts.banner = "Caravan #{Caravan::VERSION}\nCopyright (c) David Zhang 2018\n"
  opts.separator ""

  opts.on("-l YAML_NAME", "--load YAML_NAME", "YAML path") do |value|
    options[:yaml] = value
  end

  opts.on("-c SPEC_NAME", "--spec SPEC_NAME", "Spec name") do |value|
    options[:spec] = value
  end

  opts.on("-s SOURCE_PATH", "--source SOURCE_PATH", "Source path") do |value|
    options[:src] = value
  end

  opts.on("-d DEST_PATH", "--dest DEST_PATH", "Destination path") do |value|
    options[:dst] = value
  end

  opts.on("-m DEPLOY_MODE", "--mode DEPLOY_MODE", "Deploy mode") do |value|
    options[:mode] = value || "shell"
  end

  opts.on("-i IGNORE_FILES", "--ignore IGNORE_FILES", "Ignore files") do |value|
    if options.key?(:ignore)
      options[:ignore] << value
    else
      options[:ignore] = [value]
    end
  end

  opts.on("-o", "--once", "Deploy for once") do
    options[:once] = true
  end

  opts.on("-b", "--debug", "Debug mode") do
    options[:debug] = true
  end

  opts.on_head("--init", "Init caravan.yml") do
    Caravan.dump_default_conf
    Caravan::Message.success("Generated #{Caravan::Config.default_conf_name}")
    exit
  end

  opts.on_tail("--version", "Show version") do
    puts Caravan::VERSION
    exit
  end
end
# rubocop:enable Metrics/BlockLength

default_spec_name = Caravan::Config.default_spec_name

if ARGV.length.zero?
  merged_conf = Caravan::Config.merge({}, Caravan.process_conf("."), default_spec_name)
else
  option_parser.parse!(ARGV)
  spec_name = options[:spec] || default_spec_name
  merged_conf = if options.key?(:yaml)
                  Caravan::Config.merge(
                    options,
                    Caravan.process_conf(options[:src], options[:yaml]),
                    spec_name
                  )
                else
                  Caravan::Config.merge(
                    options,
                    Caravan.process_conf(options[:src]),
                    spec_name
                  )
                end
end

if merged_conf.key?("src") &&
   merged_conf.key?("dst") &&
   merged_conf.key?("deploy_mode")
  Caravan.start(merged_conf)
else
  Caravan::Message.error("No src, dst, deploy_mode specified. Cannot deploy.")
end