#  Phusion Passenger - https://www.phusionpassenger.com/
#  Copyright (c) 2017 Phusion Holding B.V.
#
#  "Passenger", "Phusion Passenger" and "Union Station" are registered
#  trademarks of Phusion Holding B.V.
#
#  Permission is hereby granted, free of charge, to any person obtaining a copy
#  of this software and associated documentation files (the "Software"), to deal
#  in the Software without restriction, including without limitation the rights
#  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#  copies of the Software, and to permit persons to whom the Software is
#  furnished to do so, subject to the following conditions:
#
#  The above copyright notice and this permission notice shall be included in
#  all copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#  THE SOFTWARE.

SCAN_FILES = Dir['src/**/*.{h,cpp}']

def main
  class_names, headers = find_all_schemas

  comment copyright_header_for(__FILE__), 1

  separator

  comment %q{
    SchemaPrinterMain.cpp is automatically generated from SchemaPrinterMain.cpp.cxxcodebuilder,
    using "BEGIN ConfigKit schema" magic comments from various C++ source files.
    Edits to SchemaPrinterMain.cpp will be lost.

    To update SchemaPrinterMain.cpp:
      rake apache2
      -OR-
      rake nginx

    To force regeneration of SchemaPrinterMain.cpp:
      rm -f src/schema_printer/SchemaPrinterMain.cpp
      rake src/schema_printer/SchemaPrinterMain.cpp
  }

  separator

  add_code %Q{
    #include <ev++.h> // include first in order to avoid macro clash on EV_ERROR
    #include <iostream>
  }

  headers.each do |header|
    add_code %Q{
      #include <#{header_path_to_include_path(header)}>
    }
  end

  separator

  function 'int main(int argc, char *argv[])' do
    add_code %Q{
      Passenger::Json::Value doc(Passenger::Json::objectValue);
    }

    separator

    class_names.each do |name|
      add_code %Q{
        doc[#{name.inspect}] = #{name}().inspect();
      }
    end

    separator

    add_code %Q{
      std::cout << doc.toStyledString() << std::endl;
      return 0;
    }
  end
end

def header_path_to_include_path(path)
  path.sub(%r{^src/(cxx_supportlib|agent)/}, '')
end

def scan_class_names_in(path)
  result = []
  lines = File.open(path, 'r:utf-8') do |f|
    f.read.split("\n")
  end
  lines.each do |line|
    if line =~ /BEGIN ConfigKit schema: (.+)/
      result << $1
    end
  end
  result
end

def find_all_schemas
  all_names = []
  all_headers = []
  SCAN_FILES.each do |path|
    names = scan_class_names_in(path)
    if !names.empty?
      all_names.concat(names)
      all_headers << path
    end
  end
  [all_names.sort, all_headers.sort]
end

main