/**
 * Copyright 2014 (c) Anna Schumaker.
 */
#include <core/index.h>


index_entry :: index_entry() {}
index_entry :: index_entry(const std::string &key)
	    : ie_key(key)
{}

const std::string index_entry :: primary_key() const
{
	return ie_key;
}

typename index_entry::iterator index_entry :: begin()
{
	return ie_set.begin();
}

typename index_entry::iterator index_entry :: end()
{
	return ie_set.end();
}

void index_entry :: write(file &file)
{
	std::set<unsigned int>::iterator it;
	file_writef(&file, "%s\n%zu ", ie_key.c_str(), ie_set.size());
	for (it = ie_set.begin(); it != ie_set.end(); it++)
		file_writef(&file, "%u ", *it);
}

void index_entry :: read(file &file)
{
	unsigned int num, val;
	gchar *key = file_readl(&file);

	file_readf(&file, "%u ", &num);
	ie_key = key;
	g_free(key);

	for (unsigned int i = 0; i < num; i++) {
		file_readf(&file, "%u", &val);
		ie_set.insert(val);
	}
}



void index_init(database<index_entry> *index, const gchar *filepath,
		bool autosave)
{
	db_init(index, filepath, autosave);
}

index_entry *index_insert(database<index_entry> *index, const gchar *key,
			  unsigned int value)
{
	index_entry *it = db_find(index, key);

	it->ie_set.insert(value);
	db_autosave(index);
	return it;
}

void index_remove(database<index_entry> *index, const gchar *key,
		  unsigned int value)
{
	index_entry *it = db_get(index, key);
	if (it) {
		it->ie_set.erase(value);
		db_autosave(index);
	}
}

bool index_has(database<index_entry> *index, const gchar *key, unsigned int value)
{
	index_entry *it = db_get(index, key);

	if (!it)
		return false;
	return it->ie_set.find(value) != it->ie_set.end();
}