/*
 * Application
 *
 * 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/>.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "application.h"

#include <stdlib.h>

#include <gtk/gtk.h>
#include <webkit2/webkit2.h>

#include "config/config.h"
#include "config/profiles.h"
#include "download.h"
#include "schemes/about.h"
#include "schemes/view-source.h"
#include "window.h"

struct MqApplication {
	GList      *windows;
	GHashTable *tabs;
	gint64      last_tab_id;
	MqProfiles *profiles;
	MqConfig   *config;
	gboolean    marquee_mode;
	gchar      *resources_dir;
};

static void
setup_web_context(MqApplication *application)
{
	WebKitWebContext *web_context;

	web_context = webkit_web_context_get_default();
	webkit_web_context_set_favicon_database_directory(web_context, NULL);
	webkit_web_context_set_process_model(web_context,
		WEBKIT_PROCESS_MODEL_MULTIPLE_SECONDARY_PROCESSES);

	webkit_web_context_register_uri_scheme(web_context, "mq-about",
		(WebKitURISchemeRequestCallback) mq_about_request, application,
		NULL);
	webkit_security_manager_register_uri_scheme_as_local(
		webkit_web_context_get_security_manager(web_context),
		"mq-about");

	webkit_web_context_register_uri_scheme(web_context, "view-source",
		(WebKitURISchemeRequestCallback) mq_view_source_request,
		application, NULL);
	webkit_security_manager_register_uri_scheme_as_local(
		webkit_web_context_get_security_manager(web_context),
		"view-source");
}

static void
download_started_cb(WebKitWebContext G_GNUC_UNUSED *context,
	WebKitDownload *download, MqApplication *application)
{
	mq_download_new(application->config, download);
}

MqApplication *
mq_application_new(const gchar *profile)
{
	MqApplication    *application;

	application = malloc(sizeof(*application));
	application->profiles = mq_profiles_new();
	mq_profiles_set_current(application->profiles, profile);
	application->config = mq_config_new(profile);
	mq_config_load(application->config);
	application->windows = NULL;
	application->tabs = g_hash_table_new_full(g_int64_hash, g_int64_equal,
		g_free, NULL);
	application->last_tab_id = 0;
	application->marquee_mode = FALSE;

#if defined(RUN_IN_PLACE) && RUN_IN_PLACE
	application->resources_dir = g_build_filename(ABS_TOP_BUILDDIR,
		"data", "resources", NULL);
#else
	application->resources_dir = g_build_filename(PKGDATADIR, "resources",
		NULL);
#endif

	setup_web_context(application);

	g_signal_connect(webkit_web_context_get_default(), "download-started",
		G_CALLBACK(download_started_cb), application);

	return application;
}

int
mq_application_main(MqApplication G_GNUC_UNUSED *application)
{
	gtk_main();

	return EXIT_SUCCESS;
}

static void
quit_confirm_warn_check_button_toggled_cb(GtkToggleButton *toggle_button,
	MqApplication *application)
{
	mq_config_set_boolean(application->config, "tabs.warn-on-close",
		gtk_toggle_button_get_active(toggle_button));
	mq_config_save(application->config);
}

static void
quit_confirm_response_cb(GtkWidget *dialog, gint response_id)
{
	gtk_widget_destroy(dialog);
	if (response_id == GTK_RESPONSE_OK) {
		gtk_main_quit();
	}
}

void
mq_application_quit(MqApplication *application, GtkWindow *parent)
{
	guint      num_windows;
	guint      num_tabs;
	GList     *item;
	gchar     *message;
	GtkWidget *message_label;
	GtkWidget *check_button;
	GtkWidget *vbox;
	GtkWidget *hbox;
	GtkWidget *dialog;

	num_windows = 0;
	num_tabs = 0;
	for (item = application->windows; item; item = item->next) {
		++num_windows;
		num_tabs += mq_window_get_num_tabs(item->data);
	}

	if (num_tabs == 1) {  /* Also implies num_windows == 1 */
		gtk_main_quit();
		return;  /* Making sure... */
	}

	if (!mq_config_get_boolean(application->config, "tabs.warn-on-close")) {
		gtk_main_quit();
		return;  /* Making sure... */
	}

	/* Message */
	if (num_windows == 1) {
		message = g_strdup_printf("You are about to close %d tabs "
			"in %d window.  Are you sure you want to continue?",
			num_tabs, num_windows);
	} else {
		message = g_strdup_printf("You are about to close %d tabs "
			"in %d windows.  Are you sure you want to continue?",
			num_tabs, num_windows);
	}
	message_label = gtk_label_new(message);
	g_free(message);

	/* Check button */
	check_button = gtk_check_button_new_with_mnemonic(
		"_Warn When Closing Multiple Tabs or Windows");
	gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check_button),
		mq_config_get_boolean(application->config,
			"tabs.warn-on-close"));
	/* Connect signal after setting initial toggle status, to avoid a
	 * spurious signal. */
	g_signal_connect(check_button, "toggled",
		G_CALLBACK(quit_confirm_warn_check_button_toggled_cb),
		application);

	/* Right vertical box (message and check button) */
	vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
	gtk_box_pack_start(GTK_BOX(vbox), message_label, FALSE, FALSE, 0);
	gtk_box_pack_start(GTK_BOX(vbox), check_button, FALSE, FALSE, 0);

	/* Horizontal box (icon and right vertical box) */
	hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
	gtk_box_pack_start(GTK_BOX(hbox), gtk_image_new_from_icon_name(
			"dialog-question", GTK_ICON_SIZE_DIALOG), FALSE, FALSE,
			0);
	gtk_box_pack_start(GTK_BOX(hbox), vbox, FALSE, FALSE, 0);

	/* Dialog */
	dialog = gtk_dialog_new_with_buttons("Confirm Close", parent,
		GTK_DIALOG_DESTROY_WITH_PARENT,
		"_Cancel",     GTK_RESPONSE_CANCEL,
		"Cl_ose Tabs", GTK_RESPONSE_OK,
		NULL);
	gtk_container_add(
		GTK_CONTAINER(gtk_dialog_get_content_area(GTK_DIALOG(dialog))),
		hbox);
	g_signal_connect(dialog, "response",
		G_CALLBACK(quit_confirm_response_cb), NULL);
	gtk_widget_grab_focus(gtk_dialog_get_widget_for_response(
			GTK_DIALOG(dialog), GTK_RESPONSE_OK));
	gtk_widget_show_all(dialog);

	return;
}

MqProfiles *
mq_application_get_profiles(MqApplication *application)
{
	return application->profiles;
}

MqConfig *
mq_application_get_config(MqApplication *application)
{
	return application->config;
}

MqWindow *
mq_application_add_window(MqApplication *application, const gchar **uris)
{
	MqWindow *window;

	window = mq_window_new(application, uris);

	application->windows = g_list_prepend(application->windows, window);

	return window;
}

void
mq_application_delete_window(MqApplication *application, MqWindow *window)
{
	application->windows = g_list_remove(application->windows, window);
	if (!application->windows) {
		gtk_main_quit();
	}
}

gint64
mq_application_register_tab(MqApplication *application, MqTabPage *tab_page)
{
	gint64 *tab_id;

	tab_id = g_new(gint64, 1);
	*tab_id = ++application->last_tab_id;
	g_hash_table_insert(application->tabs, tab_id, tab_page);
	return application->last_tab_id;
}

gboolean
mq_application_unregister_tab(MqApplication *application, gint64 tab_id)
{
	return g_hash_table_remove(application->tabs, &tab_id);
}

MqTabPage *
mq_application_get_tab(MqApplication *application, gint64 tab_id)
{
	return g_hash_table_lookup(application->tabs, &tab_id);
}

const gchar *
mq_application_get_resources_dir(MqApplication *application)
{
	return application->resources_dir;
}

static gboolean
scroll_tab_labels(MqApplication *application)
{
	GList *item;

	if (application->marquee_mode) {
		for (item = application->windows; item; item = item->next) {
			mq_window_scroll_tab_labels(item->data);
		}
		return G_SOURCE_CONTINUE;
	} else {
		return G_SOURCE_REMOVE;
	}
}

void
mq_application_marquee_mode_activate(MqApplication *application)
{
	GList *item;

	for (item = application->windows; item; item = item->next) {
		mq_window_begin_scrolling_tab_labels(item->data);
	}

	application->marquee_mode = TRUE;
	g_timeout_add(125, (GSourceFunc) scroll_tab_labels, application);
}

void
mq_application_marquee_mode_deactivate(MqApplication *application)
{
	GList *item;

	for (item = application->windows; item; item = item->next) {
		mq_window_end_scrolling_tab_labels(item->data);
	}

	application->marquee_mode = FALSE;
}

gboolean
mq_application_marquee_mode_on(MqApplication *application)
{
	return application->marquee_mode;
}