/*
 * about: URI scheme
 *
 * Copyright (C) 2017  Patrick McDermott
 *
 * This file is part of Marquee.
 *
 * Marquee is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Marquee is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Marquee.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <string.h>

#include <webkit2/webkit2.h>

#include "about.h"
#include "application.h"
#include "about/paths.h"

static GHashTable *
parse_query_string(gchar *str)
{
	GHashTable *hash_table;
	gchar      *key;
	gchar      *val;

	hash_table = g_hash_table_new_full(g_str_hash, g_str_equal,
		g_free, g_free);

	while (*str) {
		key = str;
		for (; *str && *str != '='; ++str);
		if (!*str) {
			g_hash_table_insert(hash_table,
				g_uri_unescape_string(key, NULL), NULL);
			break;
		}
		*str = '\0';
		val = ++str;
		for (; *str && *str != '&'; ++str);
		if (!*str) {
			g_hash_table_insert(hash_table,
				g_uri_unescape_string(key, NULL),
				g_uri_unescape_string(val, NULL));
			break;
		}
		*str = '\0';
		g_hash_table_insert(hash_table,
			g_uri_unescape_string(key, NULL),
			g_uri_unescape_string(val, NULL));
		++str;
	}

	return hash_table;
}

void
mq_about_request(WebKitURISchemeRequest *request, MqApplication *application)
{
	const gchar *path;
	gchar       *query_str;
	GHashTable  *query;

	path = webkit_uri_scheme_request_get_path(request);
	query_str = strchr(webkit_uri_scheme_request_get_uri(request), '?');
	if (query_str && query_str[1]) {
		query_str = g_strdup(query_str + 1);
		query = parse_query_string(query_str);
		g_free(query_str);
	} else {
		query = NULL;
	}

	if (g_strcmp0(path, "") == 0 || g_strcmp0(path, "version") == 0) {
		mq_about_version_response(application, query, request);
	} else if (g_strcmp0(path, "preferences") == 0) {
		mq_about_preferences_response(application, query, request);
	} else if (g_strcmp0(path, "marquee") == 0) {
		mq_about_marquee_response(application, query, request);
	} else {
		return;
	}

	if (query) {
		g_hash_table_unref(query);
	}
}

void
mq_about_response(WebKitURISchemeRequest *request, gchar *contents)
{
	gsize         stream_length;
	GInputStream *stream;

	stream_length = strlen(contents);
	stream = g_memory_input_stream_new_from_data(contents,
		stream_length, g_free);
	webkit_uri_scheme_request_finish(request, stream, stream_length,
		"text/html");
	g_object_unref(stream);
}

void
mq_about_redirect(WebKitURISchemeRequest *request, const gchar *uri)
{
	WebKitWebView *web_view;

	web_view = webkit_uri_scheme_request_get_web_view(request);
	webkit_web_view_load_request(web_view, webkit_uri_request_new(uri));
	mq_about_response(request, g_strdup(""));
}