#include "config.h"

#include "files.h"
#include <QFile>
#include <QJsonDocument>
#include <QJsonArray>

#include <Log.h>

#include "json.h"

#ifdef WIN32
#define CONFPATH "lolautoacceptor/"
#else
#define CONFPATH ".config/lolautoaccept/"
#endif

Config::StageConfig::StageConfig() : enabled(false) {}

Config::StageConfig::StageConfig(const QJsonObject& j) {
	if(j["champ"].isString()) {
		champs.push_back(getValue<QString>(j, "champ"));
	}
	if(j["champs"].isArray()) {
		QJsonArray jchamps = j["champs"].toArray();
		for(auto jchamp : jchamps) {
			if(jchamp.isString()) {
				QString jchampstr = jchamp.toString();
				if(!jchampstr.isEmpty()) {
					champs.push_back(jchampstr);
				}
			}
		}
	}
	enabled = getValue(j, "enabled", false);
}

Config::StageConfig::operator QJsonObject() const {
	QJsonObject out;

	QJsonArray jchamps;
	for(const QString& champ : champs) {
		if(!champ.isEmpty()) {
			jchamps.push_back(champ);
		}
	}

	out.insert("champs", jchamps);
	out.insert("enabled", enabled);

	return out;
}

Config::PositionConfig::PositionConfig() {}
Config::PositionConfig::PositionConfig(const QJsonObject& j) {
	ban = getValue<Config::StageConfig>(j, "ban");
	pick = getValue<Config::StageConfig>(j, "pick");
	position = toPosition(getValue<QString>(j, "position"));
	if((int) position < 0 || position > Position::UTILITY) {
		qWarning() << "invalid config value \"position\"";
		position = Position::MIDDLE;
	}
}
Config::PositionConfig::operator QJsonObject() const {
	QJsonObject out;

	out["ban"] = (QJsonObject) ban;
	out["pick"] = (QJsonObject) pick;
	out["position"] = toString(position);

	return out;
}

Config::RunePageConfig::RunePageConfig() {}
Config::RunePageConfig::RunePageConfig(const QJsonObject& j) {
	name = getValue<QString>(j, "name");
	runepage = getValue<::RunePage>(j, "runepage");
}
Config::RunePageConfig::operator QJsonObject() const {
	QJsonObject out;

	out["name"] = name;
	out["runepage"] = static_cast<QJsonObject>(runepage);

	return out;
}

Config::RootConfig::RootConfig() {}

Config::RunePageConfig::RunePageConfig(QString name, const RunePage& rp) : name(name), runepage(rp) {}

Config::GeneralRunePageConfig::GeneralRunePageConfig() {}
Config::GeneralRunePageConfig::GeneralRunePageConfig(const QJsonObject& j) {
	auto runepagesRef = j["pages"];
	if(runepagesRef.isArray()) {
		QJsonArray jpages = runepagesRef.toArray();

		runePages.reserve(jpages.size());
		for(QJsonValue val : jpages) {
			if(val.isObject()) {
				runePages.push_back(std::make_shared<RunePageConfig>(val.toObject()));
			}
		}
	}

	autoSync = getValue(j, "autosync", true);
}
Config::GeneralRunePageConfig::operator QJsonObject() const {
	QJsonObject out;

	QJsonArray runepagesArr;
	for(std::shared_ptr<RunePageConfig> rp : runePages) {
		runepagesArr.push_back((QJsonObject) *rp);
	}
	out.insert("pages", runepagesArr);
	out.insert("autosync", autoSync);

	return out;
}

Config::RootConfig::RootConfig(const QJsonObject& j) {
	if(j.contains("version")) {
		int version = j["version"].toInt();
		if(version > 1) {
			// error
			qCritical() << "config version is not known: " << version << " using the config might corrupt it.";

			// TODO: make backup of config or something
		}

		// add migrations here if required
	}

	auto jposref = j["positions"];
	if(jposref.isArray()) {
		QJsonArray jpos = jposref.toArray();

		positionConfigs.reserve(jpos.size());
		for(QJsonValue val : jpos) {
			if(val.isObject()) {
				positionConfigs.push_back(std::make_shared<Config::PositionConfig>(val.toObject())); // implicit cast to PositionConfig
			}
		}
	}

	runepagesConfig = getValue<GeneralRunePageConfig>(j, "runepages");

	enabledAutoAccept = getValue(j, "enabledAutoAccept", true);
	enabledSmiteWarn = getValue(j, "enabledSmiteWarn", true);
	enabledAutoWrite = getValue(j, "enabledAutoWrite", false);
	autoWriteText = getValue<QString>(j, "autoWriteText");
}

Config::RootConfig::operator QJsonObject() const {
	QJsonObject out;

	QJsonArray positionarr;
	for(auto pos : positionConfigs) {
		positionarr.push_back((QJsonObject) *pos.get());
	}

	out["positions"] = positionarr;
	out["runepages"] = (QJsonObject) runepagesConfig;
	out.insert("enabledAutoAccept", enabledAutoAccept);
	out.insert("enabledSmiteWarn", enabledSmiteWarn);
	out.insert("enabledAutoWrite", enabledAutoWrite);
	out.insert("autoWriteText", autoWriteText);
	out.insert("version", 1);

	return out;
}

std::shared_ptr<Config::PositionConfig> Config::RootConfig::getPositionConfig(Position position) {
	// find existing configuration with given position
	for(auto posc : positionConfigs) {
		if(posc->position == position) {
			return posc;
		}
	}

	// add a new config
	auto posconfig = std::make_shared<Config::PositionConfig>();
	positionConfigs.push_back(posconfig);
	posconfig->position = position;
	return posconfig;
}

Config::Config() {
	configFolderPath = getHome() + CONFPATH;
	configFilePath = configFolderPath + "config.json";
	mkdirs(configFolderPath);
}

Config::~Config() {}

bool Config::load() {
	QFile conffile(configFilePath);
	if(!conffile.open(QIODevice::ReadOnly)) {
		qCritical() << "could not open configfile: " << configFilePath;
		return false;
	}

	QJsonParseError err;
	QJsonDocument doc = QJsonDocument::fromJson(conffile.readAll(), &err);
	if(err.error != QJsonParseError::NoError) {
		qCritical() << "config parse error: " << err.errorString() << " position: " << err.offset;
		return false;
	}
	if(doc.isObject()) {
		// implicit cast
		root = doc.object();

		qInfo() << "config loaded";
		return true;
	}

	qCritical() << "config is not a json object!";
	return false;
}

void Config::save() {
	mkdirs(configFolderPath);

	QFile conffile(configFilePath);
	if(!conffile.open(QIODevice::WriteOnly)) {
		qCritical() << "could not open configfile: " << configFilePath;
		return;
	}

	QJsonDocument doc;
	doc.setObject(root);
	conffile.write(doc.toJson());
	qInfo() << "config saved";
}

Config::RootConfig& Config::getConfig() {
	return root;
}