#!/usr/bin/env ruby

# For running when gem not installed
$:.unshift File.dirname(File.dirname(__FILE__)) + "/lib"

require "rubygems"
require "optparse"
require "guider/app"
require "guider/social"

GUIDER_VERSION = '0.0.8'

def format_footer(text)
  guider = "<a href='https://github.com/nene/guider'>Guider</a>"
  date = Time.new.strftime('%a %d %b %Y %H:%M:%S')
  text.gsub(/\{VERSION\}/, GUIDER_VERSION).gsub(/\{GUIDER\}/, guider).gsub(/\{DATE\}/, date)
end

options = {
  :output => Dir.pwd + "/out",
  :title => "Guides",
  :footer => format_footer("Generated on {DATE} by {GUIDER} {VERSION}."),
  :link_url => "http://localhost/extjs/",
  :tpl_dir => File.dirname(File.dirname(__FILE__)) + "/template",
  :warnings => false,
  :social => [],
  :search => nil,
  :analytics => nil,
}

input_files = OptionParser.new do |opts|
  opts.banner = "Generates a guide.\n\n" +
    "Usage: guider <guides/dir/>\n\n"

  opts.on("-o", "--output=DIR", "Where to output the guides.",
    "Defaults to ./out") do |dir|
    options[:output] = File.expand_path(dir)
  end

  opts.on("--title=TEXT", "The title for the whole set of guides.",
    "Defaults to: Guides.") do |title|
    options[:title] = title
  end

  opts.on("--footer=TEXT", "The footer text.",
    "Defaults to: Generated on {DATE} by {GUIDER} {VERSION}.") do |footer|
    options[:footer] = format_footer(footer)
  end

  opts.on("--link-url=URL", "Base path for links created by {@link} tags.",
    "Defaults to http://localhost/extjs/") do |url|
    options[:link_url] = url
  end

  opts.on("--index=PATH", "The guides.json file to create index.html from.") do |path|
    options[:index] = path
  end

  opts.on("--social=google,twitter,facebook", Array, "Buttons to add to the page.") do |social|
    social = social.map {|t| t.to_sym }
    unsupported = social.find_all {|t| !Guider::Social.supported_types.include?(t) }
    if unsupported.length > 0
      $stderr.puts "ERROR: Unsupported social button type: " + unsupported.join(" ")
      exit(1)
    end
    options[:social] = social
  end

  opts.on("--search=id", "ID of custom google search engine.") do |id|
    options[:search] = id
  end

  opts.on("--analytics=id", "ID for Google Analytics tracking.") do |id|
    options[:analytics] = id
  end

  opts.on("--warnings", "Enables warnings.") do
    options[:warnings] = true
  end

  opts.on("-h", "--help", "Show this help message") do
    puts opts
    exit
  end

  opts.on("--version", "Prints guider version number.") do
    puts "Guider #{GUIDER_VERSION}"
    exit
  end
end.parse!

if input_files.length == 1
  options[:input] = File.expand_path(input_files[0])
else
  $stderr.puts "ERROR: Exactly one input directory must be specified."
  exit(1)
end


Guider::App.new(options).run