// -*- c++ -*-
// Distributed under the BSD 2-Clause License.
// See accompanying file LICENSE for details.
#include <ctor.h>
#include <filesystem>
#include <iostream>
#include <fstream>

namespace
{
ctor::build_configurations ctorConfigs(const ctor::settings& settings)
{
	return
	{
		{
			ctor::target("world"),
			ctor::sources{
				{ "world.cc", ctor::source_type::generated },
			},
		},
		{
			ctor::target("foo"),
			ctor::sources{
				{ "foo.cc", ctor::source_type::generated },
			},
		},
		{
			ctor::target("this_is_unused"),
			ctor::sources{
				{"hello.cc", ctor::output_file{"world.cc"}},
				{"hello.cc", ctor::output_file{"foo.cc"}},
			},
			ctor::GeneratorOneToOne{[](const std::string& input,
			               const std::string& output,
			               const ctor::build_configuration& config,
			               const ctor::settings& settings)
			{
				namespace fs = std::filesystem;
				std::cout << "Input: " << input << '\n';
				std::cout << "Output: " << output << '\n';
				fs::copy_file(input, output, fs::copy_options::overwrite_existing);
				return 0;
			}}
		},

		{
			ctor::target("many_to_one"),
			ctor::sources{
				{"many_to_one.cc", ctor::source_type::generated}
			},
			ctor::flags{
				ctor::cxx_flags{
					"-fexceptions",
				},
			},
		},
		{
			ctor::target("many_to_one.cc"),
			ctor::sources{
				{"hello.cc"},
			},
			ctor::GeneratorManyToOne{[](const std::vector<std::string>& input,
			               const std::string& output,
			               const ctor::build_configuration& config,
			               const ctor::settings& settings)
			{
				std::cout << "Output: " << output << '\n';
				std::ofstream ofs(output);
				bool comment{true};
				for(const auto& input_file : input)
				{
					std::cout << "Input: " << input_file << '\n';
					std::ifstream ifs(input_file);
					std::string line;
					while(std::getline(ifs, line))
					{
						ofs << line << '\n';
					}
					if(comment) ofs << "/*\n";
					comment = false;
				}
				ofs << "*/\n";
				return 0;
			}}
		},

	};
}
}

REG(ctorConfigs);