/*
 * Copyright (c) 2021 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup libui
 * @{
 */
/**
 * @file Message dialog
 */

#include <errno.h>
#include <mem.h>
#include <stdlib.h>
#include <ui/fixed.h>
#include <ui/label.h>
#include <ui/msgdialog.h>
#include <ui/pbutton.h>
#include <ui/resource.h>
#include <ui/ui.h>
#include <ui/window.h>
#include "../private/msgdialog.h"

static void ui_msg_dialog_wnd_close(ui_window_t *, void *);

ui_window_cb_t ui_msg_dialog_wnd_cb = {
	.close = ui_msg_dialog_wnd_close
};

static void ui_msg_dialog_btn_clicked(ui_pbutton_t *, void *);

ui_pbutton_cb_t ui_msg_dialog_btn_cb = {
	.clicked = ui_msg_dialog_btn_clicked
};

/** Initialize message dialog parameters structure.
 *
 * Message dialog parameters structure must always be initialized using
 * this function first.
 *
 * @param params Message dialog parameters structure
 */
void ui_msg_dialog_params_init(ui_msg_dialog_params_t *params)
{
	memset(params, 0, sizeof(ui_msg_dialog_params_t));
}

/** Create new message dialog.
 *
 * @param ui User interface
 * @param params Message dialog parameters
 * @param rdialog Place to store pointer to new dialog
 * @return EOK on success or an error code
 */
errno_t ui_msg_dialog_create(ui_t *ui, ui_msg_dialog_params_t *params,
    ui_msg_dialog_t **rdialog)
{
	errno_t rc;
	ui_msg_dialog_t *dialog;
	ui_window_t *window = NULL;
	ui_wnd_params_t wparams;
	ui_fixed_t *fixed = NULL;
	ui_label_t *label = NULL;
	ui_pbutton_t *bok = NULL;
	gfx_rect_t rect;
	ui_resource_t *ui_res;

	dialog = calloc(1, sizeof(ui_msg_dialog_t));
	if (dialog == NULL) {
		rc = ENOMEM;
		goto error;
	}

	ui_wnd_params_init(&wparams);
	wparams.caption = params->caption;

	/* FIXME: Auto layout */
	if (ui_is_textmode(ui)) {
		wparams.rect.p0.x = 0;
		wparams.rect.p0.y = 0;
		wparams.rect.p1.x = 20;
		wparams.rect.p1.y = 7;
	} else {
		wparams.rect.p0.x = 0;
		wparams.rect.p0.y = 0;
		wparams.rect.p1.x = 200;
		wparams.rect.p1.y = 110;
	}

	rc = ui_window_create(ui, &wparams, &window);
	if (rc != EOK)
		goto error;

	ui_window_set_cb(window, &ui_msg_dialog_wnd_cb, dialog);

	ui_res = ui_window_get_res(window);

	rc = ui_fixed_create(&fixed);
	if (rc != EOK)
		goto error;

	rc = ui_label_create(ui_res, params->text, &label);
	if (rc != EOK)
		goto error;

	/* FIXME: Auto layout */
	if (ui_is_textmode(ui)) {
		rect.p0.x = 3;
		rect.p0.y = 2;
		rect.p1.x = 17;
		rect.p1.y = 3;
	} else {
		rect.p0.x = 10;
		rect.p0.y = 35;
		rect.p1.x = 190;
		rect.p1.y = 50;
	}

	ui_label_set_rect(label, &rect);
	ui_label_set_halign(label, gfx_halign_center);

	rc = ui_fixed_add(fixed, ui_label_ctl(label));
	if (rc != EOK)
		goto error;

	label = NULL;

	rc = ui_pbutton_create(ui_res, "OK", &bok);
	if (rc != EOK)
		goto error;

	ui_pbutton_set_cb(bok, &ui_msg_dialog_btn_cb, dialog);

	/* FIXME: Auto layout */
	if (ui_is_textmode(ui)) {
		rect.p0.x = 8;
		rect.p0.y = 4;
		rect.p1.x = 12;
		rect.p1.y = 5;
	} else {
		rect.p0.x = 55;
		rect.p0.y = 60;
		rect.p1.x = 145;
		rect.p1.y = 88;
	}

	ui_pbutton_set_rect(bok, &rect);

	ui_pbutton_set_default(bok, true);

	rc = ui_fixed_add(fixed, ui_pbutton_ctl(bok));
	if (rc != EOK)
		goto error;

	bok = NULL;

	ui_window_add(window, ui_fixed_ctl(fixed));
	fixed = NULL;

	rc = ui_window_paint(window);
	if (rc != EOK)
		goto error;

	dialog->window = window;
	dialog->bok = bok;
	*rdialog = dialog;
	return EOK;
error:
	if (label != NULL)
		ui_label_destroy(label);
	if (fixed != NULL)
		ui_fixed_destroy(fixed);
	if (window != NULL)
		ui_window_destroy(window);
	if (dialog != NULL)
		free(dialog);
	return rc;
}

/** Destroy message dialog.
 *
 * @param dialog Message dialog or @c NULL
 */
void ui_msg_dialog_destroy(ui_msg_dialog_t *dialog)
{
	if (dialog == NULL)
		return;

	ui_window_destroy(dialog->window);
	free(dialog);
}

/** Set mesage dialog callback.
 *
 * @param dialog Message dialog
 * @param cb Message dialog callbacks
 * @param arg Callback argument
 */
void ui_msg_dialog_set_cb(ui_msg_dialog_t *dialog, ui_msg_dialog_cb_t *cb,
    void *arg)
{
	dialog->cb = cb;
	dialog->arg = arg;
}

/** Message dialog window close handler.
 *
 * @param window Window
 * @param arg Argument (ui_msg_dialog_t *)
 */
static void ui_msg_dialog_wnd_close(ui_window_t *window, void *arg)
{
	ui_msg_dialog_t *dialog = (ui_msg_dialog_t *) arg;

	if (dialog->cb != NULL && dialog->cb->close != NULL)
		dialog->cb->close(dialog, dialog->arg);
}

/** Message dialog button click handler.
 *
 * @param pbutton Push button
 * @param arg Argument (ui_msg_dialog_t *)
 */
static void ui_msg_dialog_btn_clicked(ui_pbutton_t *pbutton, void *arg)
{
	ui_msg_dialog_t *dialog = (ui_msg_dialog_t *) arg;

	if (dialog->cb != NULL && dialog->cb->button != NULL)
		dialog->cb->button(dialog, dialog->arg, 0);
}

/** @}
 */