class Postgresql < Formula
  desc "Object-relational database system"
  homepage "https://www.postgresql.org/"
  url "https://ftp.postgresql.org/pub/source/v12.1/postgresql-12.1.tar.bz2"
  sha256 "a09bf3abbaf6763980d0f8acbb943b7629a8b20073de18d867aecdb7988483ed"
  head "https://github.com/postgres/postgres.git"

  bottle do
    rebuild 1
    sha256 "10d46b2d2fba43e24ad03583e3243d928c4dcf8531ded3630c9a942a1ee7e9b6" => :catalina
    sha256 "c620a1f26b954d2e27b37117dde1ce0c0b8a965879a39398ecabc8e548717fa3" => :mojave
    sha256 "6eb005a6b35c7637589733eb2ebd932d5e840023bf71322b1a609909d9035390" => :high_sierra
  end

  depends_on "pkg-config" => :build
  depends_on "icu4c"

  # GSSAPI provided by Kerberos.framework crashes when forked.
  # See https://github.com/Homebrew/homebrew-core/issues/47494.
  depends_on "krb5"

  depends_on "openssl@1.1"
  depends_on "readline"
  uses_from_macos "libxml2"
  uses_from_macos "libxslt"
  uses_from_macos "perl"

  def install
    # avoid adding the SDK library directory to the linker search path
    ENV["XML2_CONFIG"] = "xml2-config --exec-prefix=/usr"

    ENV.prepend "LDFLAGS", "-L#{Formula["openssl@1.1"].opt_lib} -L#{Formula["readline"].opt_lib}"
    ENV.prepend "CPPFLAGS", "-I#{Formula["openssl@1.1"].opt_include} -I#{Formula["readline"].opt_include}"

    args = %W[
      --disable-debug
      --prefix=#{prefix}
      --datadir=#{HOMEBREW_PREFIX}/share/postgresql
      --libdir=#{HOMEBREW_PREFIX}/lib
      --includedir=#{HOMEBREW_PREFIX}/include
      --sysconfdir=#{etc}
      --docdir=#{doc}
      --enable-thread-safety
      --with-bonjour
      --with-gssapi
      --with-icu
      --with-ldap
      --with-libxml
      --with-libxslt
      --with-openssl
      --with-pam
      --with-perl
      --with-uuid=e2fs
    ]

    # The CLT is required to build Tcl support on 10.7 and 10.8 because
    # tclConfig.sh is not part of the SDK
    args << "--with-tcl"
    if File.exist?("#{MacOS.sdk_path}/System/Library/Frameworks/Tcl.framework/tclConfig.sh")
      args << "--with-tclconfig=#{MacOS.sdk_path}/System/Library/Frameworks/Tcl.framework"
    end

    system "./configure", *args
    system "make"
    system "make", "install-world", "datadir=#{pkgshare}",
                                    "libdir=#{lib}",
                                    "pkglibdir=#{lib}/postgresql",
                                    "includedir=#{include}",
                                    "pkgincludedir=#{include}/postgresql",
                                    "includedir_server=#{include}/postgresql/server",
                                    "includedir_internal=#{include}/postgresql/internal"
  end

  def post_install
    (var/"log").mkpath
    (var/"postgres").mkpath
    unless File.exist? "#{var}/postgres/PG_VERSION"
      system "#{bin}/initdb", "--locale=C", "-E", "UTF-8", "#{var}/postgres"
    end
  end

  def caveats; <<~EOS
    To migrate existing data from a previous major version of PostgreSQL run:
      brew postgresql-upgrade-database
  EOS
  end

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

  def plist; <<~EOS
    <?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_bin}/postgres</string>
        <string>-D</string>
        <string>#{var}/postgres</string>
      </array>
      <key>RunAtLoad</key>
      <true/>
      <key>WorkingDirectory</key>
      <string>#{HOMEBREW_PREFIX}</string>
      <key>StandardOutPath</key>
      <string>#{var}/log/postgres.log</string>
      <key>StandardErrorPath</key>
      <string>#{var}/log/postgres.log</string>
    </dict>
    </plist>
  EOS
  end

  test do
    system "#{bin}/initdb", testpath/"test"
    assert_equal "#{HOMEBREW_PREFIX}/share/postgresql", shell_output("#{bin}/pg_config --sharedir").chomp
    assert_equal "#{HOMEBREW_PREFIX}/lib", shell_output("#{bin}/pg_config --libdir").chomp
    assert_equal "#{HOMEBREW_PREFIX}/lib/postgresql", shell_output("#{bin}/pg_config --pkglibdir").chomp
  end
end