// Copyright (c) 2005, Rodrigo Braz Monteiro
// All rights reserved.
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/// @file ass_style_storage.cpp
/// @brief Manage stores of styles
/// @ingroup style_editor
///

#include "ass_style_storage.h"

#include "ass_file.h"
#include "ass_style.h"
#include "options.h"

#include <libaegisub/fs.h>
#include <libaegisub/io.h>
#include <libaegisub/line_iterator.h>
#include <libaegisub/make_unique.h>
#include <libaegisub/path.h>

#include <boost/algorithm/string/predicate.hpp>

AssStyleStorage::~AssStyleStorage() { }
void AssStyleStorage::clear() { style.clear(); }
void AssStyleStorage::push_back(std::unique_ptr<AssStyle> new_style) { style.emplace_back(std::move(new_style)); }

void AssStyleStorage::Save() const {
	if (file.empty()) return;

	agi::fs::CreateDirectory(file.parent_path());

	agi::io::Save out(file);
	out.Get() << "\xEF\xBB\xBF";

	for (auto const& cur : style)
		out.Get() << cur->GetEntryData() << std::endl;
}

void AssStyleStorage::Load(agi::fs::path const& filename) {
	file = filename;
	clear();

	try {
		auto in = agi::io::Open(file);
		for (auto const& line : agi::line_iterator<std::string>(*in)) {
			try {
				style.emplace_back(agi::make_unique<AssStyle>(line));
			} catch(...) {
				/* just ignore invalid lines for now */
			}
		}
	}
	catch (agi::fs::FileNotAccessible const&) {
		// Just treat a missing file as an empty file
	}
}

void AssStyleStorage::LoadCatalog(std::string const& catalogname) {
	auto filename = config::path->Decode("?user/catalog/" + catalogname + ".sty");
	Load(filename);
}

void AssStyleStorage::Delete(int idx) {
	style.erase(style.begin() + idx);
}

std::vector<std::string> AssStyleStorage::GetNames() {
	std::vector<std::string> names;
	for (auto const& cur : style)
		names.emplace_back(cur->name);
	return names;
}

AssStyle *AssStyleStorage::GetStyle(std::string const& name) {
	for (auto& cur : style) {
		if (boost::iequals(cur->name, name))
			return cur.get();
	}
	return nullptr;
}

std::vector<std::string> AssStyleStorage::GetCatalogs() {
	std::vector<std::string> catalogs;
	for (auto const& file : agi::fs::DirectoryIterator(config::path->Decode("?user/catalog/"), "*.sty"))
		catalogs.push_back(agi::fs::path(file).stem().string());
	return catalogs;
}

bool AssStyleStorage::CatalogExists(std::string const& catalogname) {
	if (catalogname.empty()) return false;
	auto filename = config::path->Decode("?user/catalog/" + catalogname + ".sty");
	return agi::fs::FileExists(filename);
}

void AssStyleStorage::ReplaceIntoFile(AssFile &file) {
	for (auto const& s : style) {
		delete file.GetStyle(s->name);
		file.Styles.push_back(*new AssStyle(*s));
	}
}

