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class PostgresqlAT16 < Formula
  desc "Object-relational database system"
  homepage "https://www.postgresql.org/"
  url "https://ftp.postgresql.org/pub/source/v16.6/postgresql-16.6.tar.bz2"
  sha256 "23369cdaccd45270ac5dcc30fa9da205d5be33fa505e1f17a0418d2caeca477b"
  license "PostgreSQL"

  livecheck do
    url "https://ftp.postgresql.org/pub/source/"
    regex(%r{href=["']?v?(16(?:\.\d+)+)/?["' >]}i)
  end

  bottle do
    rebuild 1
    sha256 arm64_sequoia: "a125571f9fef1986bedf7300e3d99ad0b9c7b1f7d2798adcc7dc84af7f8b6173"
    sha256 arm64_sonoma:  "cba3ec296592f3a10b8f9c412524610aa56eaf7d9cab8f498cd9a1264d5f1adf"
    sha256 arm64_ventura: "a36cab1b111803ca1ad88fec990d5a5d3d5a6d5f20667d1322217e2ac2072c6c"
    sha256 sonoma:        "17ce2aafc8b68a7560e6650240466cc0d5a83df0eca998f8420cc6d818acc79d"
    sha256 ventura:       "da6354aa893f7de19811cca70816556df8257011bc1e9b16f4eb0ad447d3ed47"
    sha256 x86_64_linux:  "50858f007990ab7356c183b6b1d02dffabc4fa058321a44e71de67efe33a8d95"
  end

  keg_only :versioned_formula

  # https://www.postgresql.org/support/versioning/
  deprecate! date: "2028-11-09", because: :unsupported

  depends_on "gettext" => :build
  depends_on "pkgconf" => :build
  depends_on "icu4c@76"

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

  depends_on "lz4"
  depends_on "openssl@3"
  depends_on "readline"
  depends_on "zstd"

  uses_from_macos "libxml2"
  uses_from_macos "libxslt"
  uses_from_macos "openldap"
  uses_from_macos "perl"
  uses_from_macos "zlib"

  on_macos do
    depends_on "gettext"
  end

  on_linux do
    depends_on "linux-pam"
    depends_on "util-linux"
  end

  def install
    ENV.delete "PKG_CONFIG_LIBDIR"
    ENV.prepend "LDFLAGS", "-L#{Formula["openssl@3"].opt_lib} -L#{Formula["readline"].opt_lib}"
    ENV.prepend "CPPFLAGS", "-I#{Formula["openssl@3"].opt_include} -I#{Formula["readline"].opt_include}"

    # Fix 'libintl.h' file not found for extensions
    # Update config to fix `error: could not find function 'gss_store_cred_into' required for GSSAPI`
    if OS.mac?
      ENV.prepend "LDFLAGS", "-L#{Formula["gettext"].opt_lib} -L#{Formula["krb5"].opt_lib}"
      ENV.prepend "CPPFLAGS", "-I#{Formula["gettext"].opt_include} -I#{Formula["krb5"].opt_include}"
    end

    args = %W[
      --datadir=#{opt_pkgshare}
      --includedir=#{opt_include}
      --sysconfdir=#{etc}
      --docdir=#{doc}
      --enable-nls
      --enable-thread-safety
      --with-gssapi
      --with-icu
      --with-ldap
      --with-libxml
      --with-libxslt
      --with-lz4
      --with-zstd
      --with-openssl
      --with-pam
      --with-perl
      --with-uuid=e2fs
    ]
    args << "--with-extra-version= (#{tap.user})" if tap
    args += %w[--with-bonjour --with-tcl] if OS.mac?

    # PostgreSQL by default uses xcodebuild internally to determine this,
    # which does not work on CLT-only installs.
    args << "PG_SYSROOT=#{MacOS.sdk_path}" if OS.mac? && MacOS.sdk_root_needed?

    system "./configure", *args, *std_configure_args(libdir: opt_lib)

    # Work around busted path magic in Makefile.global.in. This can't be specified
    # in ./configure, but needs to be set here otherwise install prefixes containing
    # the string "postgres" will get an incorrect pkglibdir.
    # See https://github.com/Homebrew/homebrew-core/issues/62930#issuecomment-709411789
    system "make", "pkglibdir=#{opt_lib}/postgresql",
                   "pkgincludedir=#{opt_include}/postgresql",
                   "includedir_server=#{opt_include}/postgresql/server"
    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
    postgresql_datadir.mkpath

    # Don't initialize database, it clashes when testing other PostgreSQL versions.
    return if ENV["HOMEBREW_GITHUB_ACTIONS"]

    system bin/"initdb", "--locale=C", "-E", "UTF-8", postgresql_datadir unless pg_version_exists?
  end

  def postgresql_datadir
    var/name
  end

  def postgresql_log_path
    var/"log/#{name}.log"
  end

  def pg_version_exists?
    (postgresql_datadir/"PG_VERSION").exist?
  end

  def caveats
    <<~EOS
      This formula has created a default database cluster with:
        initdb --locale=C -E UTF-8 #{postgresql_datadir}
    EOS
  end

  service do
    run [opt_bin/"postgres", "-D", f.postgresql_datadir]
    environment_variables LC_ALL: "C"
    keep_alive true
    log_path f.postgresql_log_path
    error_log_path f.postgresql_log_path
    working_dir HOMEBREW_PREFIX
  end

  test do
    system bin/"initdb", testpath/"test" unless ENV["HOMEBREW_GITHUB_ACTIONS"]
    assert_equal opt_pkgshare.to_s, shell_output("#{bin}/pg_config --sharedir").chomp
    assert_equal opt_lib.to_s, shell_output("#{bin}/pg_config --libdir").chomp
    assert_equal (opt_lib/"postgresql").to_s, shell_output("#{bin}/pg_config --pkglibdir").chomp
    assert_equal (opt_include/"postgresql").to_s, shell_output("#{bin}/pg_config --pkgincludedir").chomp
    assert_equal (opt_include/"postgresql/server").to_s, shell_output("#{bin}/pg_config --includedir-server").chomp
    assert_match "-I#{Formula["gettext"].opt_include}", shell_output("#{bin}/pg_config --cppflags") if OS.mac?
  end
end