From 5864e5abc43b201c3801fa39a2fcaf9e3a9e8914 Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Sun, 27 Feb 2022 12:54:10 +0100
Subject: refactor: use dependency injection

---
 src/game_of_life.cpp | 97 +++++++++-------------------------------------------
 1 file changed, 16 insertions(+), 81 deletions(-)

(limited to 'src/game_of_life.cpp')

diff --git a/src/game_of_life.cpp b/src/game_of_life.cpp
index 3cd662b..9f7b019 100644
--- a/src/game_of_life.cpp
+++ b/src/game_of_life.cpp
@@ -1,94 +1,29 @@
-#include "conversion.hpp"
-#include "randomization.hpp"
+#include "bootstrap.hpp"
+#include "interfaces/argument_parser.hpp"
+#include "interfaces/randomization.hpp"
 
 #include <getopt.h>
-#include <iostream>
-#include <memory>
-#include <string_view>
 #include <vector>
 
-namespace
-{
-void optarg_error(char arg, const std::string_view &error)
-{
-	std::cout << "Error: Invalid option argument for -" << arg << ". " << error
-			  << std::endl;
-	exit(EXIT_FAILURE);
-}
-
-/**
- * Returns the current optarg as a string view.
- */
-std::string_view get_str_optarg()
-{
-	return std::string_view(optarg);
-}
-
-/**
- * Returns the current optarg as a unsigned integer.
- *
- * @param arg The current command-line argument character
- * @param check_zero Whether or not to make sure that the result is not zero
- */
-unsigned int get_uint_optarg(char arg, bool check_zero = false)
-{
-	auto conversion_result = str_to_uint(get_str_optarg());
-
-	if (!conversion_result.success || (check_zero && conversion_result.result == 0))
-	{
-		optarg_error(arg, conversion_result.fail_reason);
-	}
-
-	return conversion_result.result;
-}
-} // namespace
-
-constexpr std::array<option, 8> options = {
-	option({"seed", required_argument, nullptr, 's'}),
-	option({"help", no_argument, nullptr, 0}), option({nullptr, 0, nullptr, 0})};
+const std::vector<option> options = {option({"seed", required_argument, nullptr, 's'}),
+									 option({"help", no_argument, nullptr, 'h'}),
+									 option({nullptr, 0, nullptr, 0})};
 
 int main(int argc, char *argv[])
 {
-	auto args = std::vector<std::string_view>(argv, argv + argc);
+	auto container = bootstrap();
 
-	std::shared_ptr<RandomNumberGenerator> random_gen = nullptr;
+	auto argument_parser = container.get<IArgumentParser>();
 
-	char arg = 0;
-	while ((arg = static_cast<char>(
-				getopt_long(argc, argv, "s:", options.data(), nullptr))) != -1)
-	{
-		switch (arg)
-		{
-		case 's':
-		{
-			auto seed = get_uint_optarg(arg, true);
-
-			random_gen = std::make_shared<RandomNumberGenerator>(seed);
-			break;
-		}
-		case 0:
-		{
-			std::cout << "Usage: " << args[0]
-					  << " [OPTION]...\n\n"
-						 "Options:\n"
-					  << "  -s, --seed SEED         The randomization seed used\n"
-						 "      --help              Displays usage information"
-					  << std::endl;
-			return EXIT_SUCCESS;
-		}
-		case '?':
-		{
-			std::cout << "\nTry '" << args[0] << " --help' for more information"
-					  << std::endl;
-			return EXIT_FAILURE;
-		}
-		default:
-			abort();
-		}
-	}
+	auto parsed_arguments = argument_parser->parse(options, "s:h", argc, argv);
 
-	if (random_gen == nullptr)
+	if (parsed_arguments.random_gen == nullptr)
 	{
-		random_gen = std::make_shared<RandomNumberGenerator>();
+		auto seed_generator_factory = container.get<ISeedGeneratorFactory>();
+		auto random_number_generator_factory =
+			container.get<IRandomNumberGeneratorFactory>();
+
+		parsed_arguments.random_gen =
+			random_number_generator_factory(seed_generator_factory()->random_seed());
 	}
 }
-- 
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