require 'formula'

class Varnish < Formula
  homepage 'http://www.varnish-cache.org/'
  url 'http://repo.varnish-cache.org/source/varnish-3.0.3.tar.gz'
  sha1 '6e1535caa30c3f61af00160c59d318e470cd6f57'

  depends_on 'pkg-config' => :build
  depends_on 'pcre'

  def install
    system "./configure", "--disable-dependency-tracking",
                          "--prefix=#{prefix}",
                          "--localstatedir=#{var}"
    system "make install"
    (var+'varnish').mkpath
  end

  def caveats; <<-EOS.undent
    To launch on startup (port > 1024):
    * if this is your first install:
        mkdir -p ~/Library/LaunchAgents
        cp #{plist_path} ~/Library/LaunchAgents/
        launchctl load -w ~/Library/LaunchAgents/#{plist_path.basename}

    * if this is an upgrade and you already have the #{plist_path.basename} loaded:
        launchctl unload -w ~/Library/LaunchAgents/#{plist_path.basename}
        cp #{plist_path} ~/Library/LaunchAgents/
        launchctl load -w ~/Library/LaunchAgents/#{plist_path.basename}

    To launch on startup (port < 1024):
    * if this is your first install:
        sudo cp #{plist_path} /Library/LaunchAgents/
        sudo launchctl load -w /Library/LaunchAgents/#{plist_path.basename}

    * if this is an upgrade and you already have the #{plist_path.basename} loaded:
        sudo launchctl unload -w /Library/LaunchAgents/#{plist_path.basename}
        sudo cp #{plist_path} /Library/LaunchAgents/
        sudo launchctl load -w /Library/LaunchAgents/#{plist_path.basename}

    EOS
  end

  def startup_plist; <<-EOPLIST.undent
      <?xml version="1.0" encoding="UTF-8"?>
      <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
      <plist version="1.0">
      <dict>
        <key>Label</key>
        <string>#{plist_name}</string>
        <key>ProgramArguments</key>
        <array>
          <string>#{HOMEBREW_PREFIX}/sbin/varnishd</string>
          <string>-n</string>
          <string>#{var}/varnish</string>
          <string>-f</string>
          <string>#{etc}/varnish/default.vcl</string>
          <string>-s</string>
          <string>malloc,1G</string>
          <string>-T</string>
          <string>127.0.0.1:2000</string>
          <string>-a</string>
          <string>0.0.0.0:80</string>
        </array>
        <key>KeepAlive</key>
        <true/>
        <key>RunAtLoad</key>
        <true/>
        <key>WorkingDirectory</key>
        <string>#{HOMEBREW_PREFIX}</string>
        <key>StandardErrorPath</key>
        <string>#{var}/varnish/varnish.log</string>
        <key>StandardOutPath</key>
        <string>#{var}/varnish/varnish.log</string>
      </dict>
      </plist>
    EOPLIST
  end
end