/**
 * config.cpp:
 * parses the config... lol
 **/
#include "core/config.h"
#include "core/anime.h"
#include "core/filesystem.h"
#include "core/json.h"
#include <cstdlib>
#include <cstring>
#include <filesystem>
#include <fstream>
#include <limits.h>

std::map<std::string, Themes> StringToTheme = {
	{"Default", Themes::OS	  },
	 {"Light",   Themes::LIGHT},
	   {"Dark",	Themes::DARK }
};

std::map<Themes, std::string> ThemeToString = {
	{Themes::OS,	 "Default"},
	 {Themes::LIGHT, "Light"	},
	   {Themes::DARK,  "Dark"	}
};

std::map<Anime::Services, std::string> ServiceToString{
	{Anime::Services::NONE,	"None"	  },
	 {Anime::Services::ANILIST, "AniList"}
};

std::map<std::string, Anime::Services> StringToService{
	{"None",	 Anime::Services::NONE	  },
	 {"AniList", Anime::Services::ANILIST}
};

std::map<Anime::TitleLanguage, std::string> AnimeTitleToStringMap = {
	{Anime::TitleLanguage::ROMAJI,  "Romaji" },
	{Anime::TitleLanguage::NATIVE,  "Native" },
	{Anime::TitleLanguage::ENGLISH, "English"}
};

std::map<std::string, Anime::TitleLanguage> StringToAnimeTitleMap = {
	{"Romaji",  Anime::TitleLanguage::ROMAJI },
	{"Native",  Anime::TitleLanguage::NATIVE },
	{"English", Anime::TitleLanguage::ENGLISH}
};

int Config::Load() {
	std::filesystem::path cfg_path = get_config_path();
	if (!std::filesystem::exists(cfg_path))
		return 0;
	std::ifstream config_in(cfg_path.string().c_str(), std::ifstream::in);
	auto config_js = nlohmann::json::parse(config_in);
	service = StringToService[JSON::GetString(config_js, "/General/Service"_json_pointer)];
	anime_list.language = StringToAnimeTitleMap[JSON::GetString(
		config_js, "/Anime List/Display only aired episodes"_json_pointer, "Romaji")];
	anime_list.display_aired_episodes =
		JSON::GetBoolean(config_js, "/Anime List/Display only aired episodes"_json_pointer, true);
	anime_list.display_available_episodes =
		JSON::GetBoolean(config_js, "/Anime List/Display only available episodes in library"_json_pointer, true);
	anime_list.highlight_anime_if_available =
		JSON::GetBoolean(config_js, "/Anime List/Highlight anime if available"_json_pointer, true);
	anime_list.highlighted_anime_above_others =
		JSON::GetBoolean(config_js, "/Anime List/Display highlighted anime above others"_json_pointer);
	anilist.auth_token = JSON::GetString(config_js, "/Authorization/AniList/Auth Token"_json_pointer);
	anilist.username = JSON::GetString(config_js, "/Authorization/AniList/Username"_json_pointer);
	anilist.user_id = JSON::GetInt(config_js, "/Authorization/AniList/User ID"_json_pointer);
	theme = StringToTheme[JSON::GetString(config_js, "/Appearance/Theme"_json_pointer)];
	config_in.close();
	return 0;
}

int Config::Save() {
	std::filesystem::path cfg_path = get_config_path();
	if (!std::filesystem::exists(cfg_path.parent_path()))
		std::filesystem::create_directories(cfg_path.parent_path());
	std::ofstream config_out(cfg_path.string().c_str(), std::ofstream::out | std::ofstream::trunc);
	// clang-format off
	nlohmann::json config_js = {
		{"General",	{
			{"Service", ServiceToString[service]}
		}},
		{"Anime List", {
			{"Title language", AnimeTitleToStringMap[anime_list.language]},
			{"Display only aired episodes", anime_list.display_aired_episodes},
			{"Display only available episodes in library", anime_list.display_available_episodes},
			{"Highlight anime if available", anime_list.highlight_anime_if_available},
			{"Display highlighted anime above others", anime_list.highlighted_anime_above_others}
		}},
		{"Authorization", {
			{"AniList", {
				{"Auth Token", anilist.auth_token},
				{"Username", anilist.username},
				{"User ID", anilist.user_id}
			}}
		}},
		{"Appearance", {
			{"Theme", ThemeToString[theme]}
		}}
	};
	// clang-format on
	config_out << std::setw(4) << config_js << std::endl;
	config_out.close();
	return 0;
}