/*
 * Copyright (C) 2012-2023 Robin Haberkorn
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdarg.h>
#include <stdio.h>

#include <glib.h>
#include <glib/gprintf.h>
#include <glib/gstdio.h>

#include <Scintilla.h>

#include "sciteco.h"
#include "string-utils.h"
#include "undo.h"
#include "view.h"
#include "interface.h"

//#define DEBUG

teco_view_t *teco_interface_current_view = NULL;

TECO_DEFINE_UNDO_CALL(teco_interface_show_view, teco_view_t *);
TECO_DEFINE_UNDO_CALL(teco_interface_ssm, unsigned int, uptr_t, sptr_t);
TECO_DEFINE_UNDO_CALL(teco_interface_info_update_qreg, const teco_qreg_t *);
TECO_DEFINE_UNDO_CALL(teco_interface_info_update_buffer, const teco_buffer_t *);

typedef struct {
	teco_string_t str;
	gchar name[];
} teco_undo_set_clipboard_t;

static void
teco_undo_set_clipboard_action(teco_undo_set_clipboard_t *ctx, gboolean run)
{
	if (run)
		teco_interface_set_clipboard(ctx->name, ctx->str.data, ctx->str.len, NULL);
	teco_string_clear(&ctx->str);
}

/**
 * Set the clipboard upon rubout.
 *
 * This passes ownership of the clipboard content string
 * to the undo token object.
 */
void
teco_interface_undo_set_clipboard(const gchar *name, gchar *str, gsize len)
{
	teco_undo_set_clipboard_t *ctx;

	ctx = teco_undo_push_size((teco_undo_action_t)teco_undo_set_clipboard_action,
	                          sizeof(*ctx) + strlen(name) + 1);
	if (ctx) {
		ctx->str.data = str;
		ctx->str.len = len;
		strcpy(ctx->name, name);
	} else {
		g_free(str);
	}
}

/**
 * Print a message to the appropriate stdio streams.
 *
 * This method has similar semantics to `vprintf`, i.e.
 * it leaves `ap` undefined. Therefore to pass the format
 * string and arguments to another `vprintf`-like function,
 * you have to copy the arguments via `va_copy`.
 */
void
teco_interface_stdio_vmsg(teco_msg_t type, const gchar *fmt, va_list ap)
{
	FILE *stream = stdout;

	switch (type) {
	case TECO_MSG_USER:
		break;
	case TECO_MSG_INFO:
		fputs("Info: ", stream);
		break;
	case TECO_MSG_WARNING:
		stream = stderr;
		fputs("Warning: ", stream);
		break;
	case TECO_MSG_ERROR:
		stream = stderr;
		fputs("Error: ", stream);
		break;
	}

	g_vfprintf(stream, fmt, ap);
	fputc('\n', stream);
}

void
teco_interface_process_notify(SCNotification *notify)
{
#ifdef DEBUG
	g_printf("SCINTILLA NOTIFY: code=%d\n", notify->nmhdr.code);
#endif
}