require 'formula'

class Postgresql < Formula
  homepage 'http://www.postgresql.org/'
  url 'http://ftp.postgresql.org/pub/source/v9.2.4/postgresql-9.2.4.tar.bz2'
  sha1 '75b53c884cb10ed9404747b51677358f12082152'

  option '32-bit'
  option 'no-perl', 'Build without Perl support'
  option 'no-tcl', 'Build without Tcl support'
  option 'enable-dtrace', 'Build with DTrace support'

  depends_on 'readline'
  depends_on 'libxml2' if MacOS.version <= :leopard # Leopard libxml is too old
  depends_on 'ossp-uuid' => :recommended
  depends_on :python => :recommended

  conflicts_with 'postgres-xc',
    :because => 'postgresql and postgres-xc install the same binaries.'

  fails_with :clang do
    build 211
    cause 'Miscompilation resulting in segfault on queries'
  end

  # Fix PL/Python build: https://github.com/mxcl/homebrew/issues/11162
  # Fix uuid-ossp build issues: http://archives.postgresql.org/pgsql-general/2012-07/msg00654.php
  def patches
    DATA
  end

  def install
    ENV.libxml2 if MacOS.version >= :snow_leopard

    args = %W[
      --disable-debug
      --prefix=#{prefix}
      --datadir=#{share}/#{name}
      --docdir=#{doc}
      --enable-thread-safety
      --with-bonjour
      --with-gssapi
      --with-krb5
      --with-ldap
      --with-openssl
      --with-pam
      --with-libxml
      --with-libxslt
    ]

    args << "--with-ossp-uuid" if build.with? 'ossp-uuid'
    args << "--with-python" if build.with? 'python'
    args << "--with-perl" unless build.include? 'no-perl'
    args << "--with-tcl" unless build.include? 'no-tcl'
    args << "--enable-dtrace" if build.include? 'enable-dtrace'

    if build.with? 'ossp-uuid'
      ENV.append 'CFLAGS', `uuid-config --cflags`.strip
      ENV.append 'LDFLAGS', `uuid-config --ldflags`.strip
      ENV.append 'LIBS', `uuid-config --libs`.strip
    end

    if build.with? 'python'
      args << "ARCHFLAGS='-arch #{MacOS.preferred_arch}'"
      check_python_arch
    end

    if build.build_32_bit?
      ENV.append 'CFLAGS', "-arch #{MacOS.preferred_arch}"
      ENV.append 'LDFLAGS', "-arch #{MacOS.preferred_arch}"
    end

    system "./configure", *args
    system "make install-world"
  end

  def check_python_arch
    # On 64-bit systems, we need to look for a 32-bit Framework Python.
    # The configure script prefers this Python version, and if it doesn't
    # have 64-bit support then linking will fail.
    framework_python = Pathname.new("/Library/Frameworks/Python.framework/Versions/Current/Python")
    return unless framework_python.exist?
    unless (archs_for_command(framework_python)).include? :x86_64
      opoo "Detected a framework Python that does not have 64-bit support in:"
      puts <<-EOS.undent
          #{framework_python}

        The configure script seems to prefer this version of Python over any others,
        so you may experience linker problems as described in:
          http://osdir.com/ml/pgsql-general/2009-09/msg00160.html

        To fix this issue, you may need to either delete the version of Python
        shown above, or move it out of the way before brewing PostgreSQL.
      EOS
    end
  end

  def caveats
    s = <<-EOS.undent
        initdb #{var}/postgres -E utf8    # create a database
        postgres -D #{var}/postgres       # serve that database
        PGDATA=#{var}/postgres postgres   # …alternatively

    If builds of PostgreSQL 9 are failing and you have version 8.x installed,
    you may need to remove the previous version first. See:
      https://github.com/mxcl/homebrew/issues/issue/2510

    To migrate existing data from a previous major version (pre-9.2) of PostgreSQL, see:
      http://www.postgresql.org/docs/9.2/static/upgrading.html

    Some machines may require provisioning of shared memory:
      http://www.postgresql.org/docs/9.2/static/kernel-resources.html#SYSVIPC
    EOS

    s << "\n" << gem_caveats if MacOS.prefer_64_bit?
    return s
  end

  def gem_caveats; <<-EOS.undent
    When installing the postgres gem, including ARCHFLAGS is recommended:
      ARCHFLAGS="-arch x86_64" gem install pg

    To install gems without sudo, see the Homebrew wiki.
    EOS
  end

  plist_options :manual => "pg_ctl -D #{HOMEBREW_PREFIX}/var/postgres -l #{HOMEBREW_PREFIX}/var/postgres/server.log start"

  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>KeepAlive</key>
      <true/>
      <key>Label</key>
      <string>#{plist_name}</string>
      <key>ProgramArguments</key>
      <array>
        <string>#{opt_prefix}/bin/postgres</string>
        <string>-D</string>
        <string>#{var}/postgres</string>
        <string>-r</string>
        <string>#{var}/postgres/server.log</string>
      </array>
      <key>RunAtLoad</key>
      <true/>
      <key>WorkingDirectory</key>
      <string>#{HOMEBREW_PREFIX}</string>
      <key>StandardErrorPath</key>
      <string>#{var}/postgres/server.log</string>
    </dict>
    </plist>
    EOS
  end
end


__END__
--- a/src/pl/plpython/Makefile	2011-09-23 08:03:52.000000000 +1000
+++ b/src/pl/plpython/Makefile	2011-10-26 21:43:40.000000000 +1100
@@ -24,8 +24,6 @@
 # Darwin (OS X) has its own ideas about how to do this.
 ifeq ($(PORTNAME), darwin)
 shared_libpython = yes
-override python_libspec = -framework Python
-override python_additional_libs =
 endif
 
 # If we don't have a shared library and the platform doesn't allow it
--- a/contrib/uuid-ossp/uuid-ossp.c	2012-07-30 18:34:53.000000000 -0700
+++ b/contrib/uuid-ossp/uuid-ossp.c	2012-07-30 18:35:03.000000000 -0700
@@ -9,6 +9,8 @@
  *-------------------------------------------------------------------------
  */

+#define _XOPEN_SOURCE
+
 #include "postgres.h"
 #include "fmgr.h"
 #include "utils/builtins.h"