require 'formula'

class Nginx < Formula
  homepage 'http://nginx.org/'
  url 'http://nginx.org/download/nginx-1.2.5.tar.gz'
  sha1 'c36feaadbaad6938b02f4038c2d68cab10907f59'

  devel do
    url 'http://nginx.org/download/nginx-1.3.9.tar.gz'
    sha1 'dcf32eaaf7e99d169ef1d202ffe1ec38215b4d98'
  end

  env :userpaths

  depends_on 'pcre'

  option 'with-passenger', 'Compile with support for Phusion Passenger module'
  option 'with-webdav', 'Compile with support for WebDAV module'

  skip_clean 'logs'

  # Changes default port to 8080
  def patches
    DATA
  end

  def passenger_config_args
    passenger_root = `passenger-config --root`.chomp

    if File.directory?(passenger_root)
      return "--add-module=#{passenger_root}/ext/nginx"
    end

    puts "Unable to install nginx with passenger support. The passenger"
    puts "gem must be installed and passenger-config must be in your path"
    puts "in order to continue."
    exit
  end

  def install
    args = ["--prefix=#{prefix}",
            "--with-http_ssl_module",
            "--with-pcre",
            "--with-ipv6",
            "--with-cc-opt=-I#{HOMEBREW_PREFIX}/include",
            "--with-ld-opt=-L#{HOMEBREW_PREFIX}/lib",
            "--conf-path=#{etc}/nginx/nginx.conf",
            "--pid-path=#{var}/run/nginx.pid",
            "--lock-path=#{var}/run/nginx.lock",
            "--http-client-body-temp-path=#{var}/run/nginx/client_body_temp",
            "--http-proxy-temp-path=#{var}/run/nginx/proxy_temp",
            "--http-fastcgi-temp-path=#{var}/run/nginx/fastcgi_temp",
            "--http-uwsgi-temp-path=#{var}/run/nginx/uwsgi_temp",
            "--http-scgi-temp-path=#{var}/run/nginx/scgi_temp"]

    args << passenger_config_args if build.include? 'with-passenger'
    args << "--with-http_dav_module" if build.include? 'with-webdav'

    system "./configure", *args
    system "make"
    system "make install"
    man8.install "objs/nginx.8"
    (var/'run/nginx').mkpath
  end

  def caveats; <<-EOS.undent
    In the interest of allowing you to run `nginx` without `sudo`, the default
    port is set to localhost:8080.

    If you want to host pages on your local machine to the public, you should
    change that to localhost:80, and run `sudo nginx`. You'll need to turn off
    any other web servers running port 80, of course.

    You can start nginx automatically on login running as your user with:
      mkdir -p ~/Library/LaunchAgents
      cp #{plist_path} ~/Library/LaunchAgents/
      launchctl load -w ~/Library/LaunchAgents/#{plist_path.basename}

    Though note that if running as your user, the launch agent will fail if you
    try to use a port below 1024 (such as http's default of 80.)
    EOS
  end

  def plist; <<-EOS.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>RunAtLoad</key>
        <true/>
        <key>KeepAlive</key>
        <false/>
        <key>UserName</key>
        <string>#{`whoami`.chomp}</string>
        <key>ProgramArguments</key>
        <array>
            <string>#{opt_prefix}/sbin/nginx</string>
            <string>-g</string>
            <string>daemon off;</string>
        </array>
        <key>WorkingDirectory</key>
        <string>#{HOMEBREW_PREFIX}</string>
      </dict>
    </plist>
    EOS
  end
end

__END__
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -33,7 +33,7 @@
     #gzip  on;

     server {
-        listen       80;
+        listen       8080;
         server_name  localhost;

         #charset koi8-r;