/*
 * Copyright (c) 2011 Bryan Schumaker.
 * Manages the libsaria library save file
 */
#include <library.h>
#include <notify.h>
#include <track.h>
#include <print.h>
#include <ban.h>
#include <fs.h>
#include "library.h"

#include <stdlib.h>
#include <fstream>
#include <sstream>
using namespace std;

#define LIBRARY_CURRENT_VERSION 3 /* 11/22/2012 */
static string libdir = "library";

static string id_to_filename(unsigned int id)
{
	stringstream s;
	s << id;
	return s.str();
}

static void do_save_path(ofstream &stream, void *data)
{
	libsaria::library::Path *path = (libsaria::library::Path *)data;
	println("Saving library path: %d", path->id);

	stream << LIBRARY_CURRENT_VERSION << "\n";
	stream << path->path << "\n";
	stream << path->id << " " << path->visible << " ";
	stream << path->tracks.size() << "\n";

	for (unsigned int i = 0; i < path->tracks.size(); i++)
		path->tracks[i]->save(&stream);
}

void libsaria::library::save_path(libsaria::library::Path *path)
{
	string filepath = libdir + "/" + id_to_filename(path->id);
	libsaria::app::save(filepath, do_save_path, path);
}

void read_path(ifstream &stream)
{
	string tmp;
	stringstream s;
	unsigned int size;
	unsigned int version;
	libsaria::Track *track;
	struct libsaria::library::Path path, *path_ptr;

	getline(stream, tmp);
	s << tmp;
	s >> version;
	if (version > LIBRARY_CURRENT_VERSION)
		return;

	getline(stream, path.path);

	getline(stream, tmp);
	s.clear();
	s.str(tmp);

	s >> path.id >> path.visible;
	if (version < 3) {
		unsigned int next_track;
		s >> next_track;
	}
	s >> size;

	path_ptr = push_path(path);
	for (unsigned int i = 0; i < size; i++) {
		track = new libsaria::Track(stream, path_ptr, version);
		path_ptr->tracks.push_back(track);
		track->id = i;
	}

	libsaria::library::save_path(path_ptr);
	libsaria::notify(PATH_UPDATED, path_ptr);
	if (path.visible)
		libsaria::library::show_path(path_ptr);
}

unsigned int schedule_load()
{
	return libsaria::app::read_numdir(libdir, read_path);
}

void remove_file(libsaria::library::Path *path)
{
	string file = id_to_filename(path->id);
	libsaria::app::rm(libdir + "/" + file);
}