class MysqlAT57 < Formula
  desc "Open source relational database management system"
  homepage "https://dev.mysql.com/doc/refman/5.7/en/"
  url "https://cdn.mysql.com/Downloads/MySQL-5.7/mysql-boost-5.7.29.tar.gz"
  sha256 "00f514124de2bad1ba7b380cbbd46e316cae7fc7bc3a5621456cabf352f27978"

  bottle do
    sha256 "bf0cdc294df996455c8abad3e03b6691f2145a4036085ad2570ec6c993e6b9c0" => :catalina
    sha256 "88cf1f9f07a84694654f790507da937909eee1b16a0e47d473b2fc45e19c9ec1" => :mojave
    sha256 "b4bf218448de13e40027117d3813d9a7a72d3205deb9658da16b85f74ad390af" => :high_sierra
    sha256 "11b09ca0cf8a1fa0a3ab1b697b29128a656733447d315c49c2802c8fb46c1258" => :x86_64_linux
  end

  keg_only :versioned_formula

  depends_on "cmake" => :build
  depends_on "openssl@1.1"
  depends_on "pkg-config" => :build unless OS.mac?

  uses_from_macos "libedit"

  def datadir
    var/"mysql"
  end

  def install
    # Fix libmysqlgcs.a(gcs_logging.cc.o): relocation R_X86_64_32
    # against `_ZN17Gcs_debug_options12m_debug_noneB5cxx11E' can not be used when making
    # a shared object; recompile with -fPIC
    ENV.append_to_cflags "-fPIC" unless OS.mac?

    # -DINSTALL_* are relative to `CMAKE_INSTALL_PREFIX` (`prefix`)
    args = %W[
      -DCOMPILATION_COMMENT=Homebrew
      -DDEFAULT_CHARSET=utf8
      -DDEFAULT_COLLATION=utf8_general_ci
      -DINSTALL_DOCDIR=share/doc/#{name}
      -DINSTALL_INCLUDEDIR=include/mysql
      -DINSTALL_INFODIR=share/info
      -DINSTALL_MANDIR=share/man
      -DINSTALL_MYSQLSHAREDIR=share/mysql
      -DINSTALL_PLUGINDIR=lib/plugin
      -DMYSQL_DATADIR=#{datadir}
      -DSYSCONFDIR=#{etc}
      -DWITH_BOOST=boost
      -DWITH_EDITLINE=system
      -DWITH_SSL=yes
      -DWITH_UNIT_TESTS=OFF
      -DWITH_EMBEDDED_SERVER=ON
      -DENABLED_LOCAL_INFILE=1
      -DWITH_INNODB_MEMCACHED=ON
    ]

    system "cmake", ".", *std_cmake_args, *args
    system "make"
    system "make", "install"

    (prefix/"mysql-test").cd do
      system "./mysql-test-run.pl", "status", "--vardir=#{Dir.mktmpdir}"
    end

    # Remove the tests directory
    rm_rf prefix/"mysql-test"

    # Don't create databases inside of the prefix!
    # See: https://github.com/Homebrew/homebrew/issues/4975
    rm_rf prefix/"data"

    # Fix up the control script and link into bin.
    inreplace "#{prefix}/support-files/mysql.server",
              /^(PATH=".*)(")/,
              "\\1:#{HOMEBREW_PREFIX}/bin\\2"
    bin.install_symlink prefix/"support-files/mysql.server"

    # Install my.cnf that binds to 127.0.0.1 by default
    (buildpath/"my.cnf").write <<~EOS
      # Default Homebrew MySQL server config
      [mysqld]
      # Only allow connections from localhost
      bind-address = 127.0.0.1
    EOS
    etc.install "my.cnf"
  end

  def post_install
    # Make sure the datadir exists
    datadir.mkpath
    unless (datadir/"mysql/general_log.CSM").exist?
      ENV["TMPDIR"] = nil
      system bin/"mysqld", "--initialize-insecure", "--user=#{ENV["USER"]}",
        "--basedir=#{prefix}", "--datadir=#{datadir}", "--tmpdir=/tmp"
    end
  end

  def caveats
    s = <<~EOS
      We've installed your MySQL database without a root password. To secure it run:
          mysql_secure_installation

      MySQL is configured to only allow connections from localhost by default

      To connect run:
          mysql -uroot
    EOS
    if my_cnf = ["/etc/my.cnf", "/etc/mysql/my.cnf"].find { |x| File.exist? x }
      s += <<~EOS

        A "#{my_cnf}" from another install may interfere with a Homebrew-built
        server starting up correctly.
      EOS
    end
    s
  end

  plist_options :manual => "#{HOMEBREW_PREFIX}/opt/mysql@5.7/bin/mysql.server 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}/mysqld_safe</string>
        <string>--datadir=#{datadir}</string>
      </array>
      <key>RunAtLoad</key>
      <true/>
      <key>WorkingDirectory</key>
      <string>#{datadir}</string>
    </dict>
    </plist>
  EOS
  end

  test do
    # Expects datadir to be a completely clean dir, which testpath isn't.
    dir = Dir.mktmpdir
    system bin/"mysqld", "--initialize-insecure", "--user=#{ENV["USER"]}",
    "--basedir=#{prefix}", "--datadir=#{dir}", "--tmpdir=#{dir}"

    pid = fork do
      exec bin/"mysqld", "--bind-address=127.0.0.1", "--datadir=#{dir}"
    end
    sleep 2

    output = shell_output("curl 127.0.0.1:3306")
    output.force_encoding("ASCII-8BIT") if output.respond_to?(:force_encoding)
    assert_match version.to_s, output
  ensure
    Process.kill(9, pid)
    Process.wait(pid)
  end
end
