/*
 * Copyright 2015 (c) Anna Schumaker.
 */
#include <core/file.h>
#include <core/settings.h>

static GHashTable *gui_settings = NULL;
static struct file gui_settings_file = FILE_INIT_DATA("", "settings", 0);


static void __settings_save_item(gpointer key, gpointer value, gpointer data)
{
	file_writef(&gui_settings_file, "%s %u\n", (const gchar *)key,
						   GPOINTER_TO_UINT(value));
}

static void __settings_save()
{
	file_open(&gui_settings_file, OPEN_WRITE);

	file_writef(&gui_settings_file, "%u\n", g_hash_table_size(gui_settings));
	g_hash_table_foreach(gui_settings, __settings_save_item, NULL);

	file_close(&gui_settings_file);
}

static void __settings_read()
{
	unsigned int num, i, value;
	gchar *key;

	num = file_readu(&gui_settings_file);
	for (i = 0; i < num; i++) {
		key   = file_readw(&gui_settings_file);
		value = file_readu(&gui_settings_file);

		g_hash_table_insert(gui_settings, key, GUINT_TO_POINTER(value));
	}
}

void settings_init()
{
	gui_settings = g_hash_table_new_full(g_str_hash, g_str_equal,
					     g_free, NULL);

	if (file_open(&gui_settings_file, OPEN_READ))
		__settings_read();
	file_close(&gui_settings_file);
}

void settings_deinit()
{
	g_hash_table_destroy(gui_settings);
	gui_settings = NULL;
}

void settings_set(const gchar *key, unsigned int value)
{
	if (gui_settings && key) {
		g_hash_table_replace(gui_settings, g_strdup(key),
				     GUINT_TO_POINTER(value));
		__settings_save();
	}
}

unsigned int settings_get(const gchar *key)
{
	if (gui_settings && key)
		return GPOINTER_TO_UINT(g_hash_table_lookup(gui_settings, key));
	return 0;
}

bool settings_has(const gchar *key)
{
	if (gui_settings && key)
		return g_hash_table_contains(gui_settings, key);
	return false;
}


#ifdef CONFIG_TESTING
GHashTable *test_get_settings()
{
	return gui_settings;
}
#endif /* CONFIG_TESTING */