/* save to vips
 *
 * 24/11/11
 */

/*

	This file is part of VIPS.

	VIPS is free software; you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation; either version 2 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 Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	02110-1301  USA

 */

/*

	These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk

 */

/*
#define DEBUG_VERBOSE
#define DEBUG
#define VIPS_DEBUG
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <glib/gi18n-lib.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <vips/vips.h>
#include <vips/internal.h>

typedef struct _VipsForeignSaveVips {
	VipsForeignSave parent_object;

	VipsTarget *target;

} VipsForeignSaveVips;

typedef VipsForeignSaveClass VipsForeignSaveVipsClass;

G_DEFINE_ABSTRACT_TYPE(VipsForeignSaveVips, vips_foreign_save_vips,
	VIPS_TYPE_FOREIGN_SAVE);

static void
vips_foreign_save_vips_dispose(GObject *gobject)
{
	VipsForeignSaveVips *vips = (VipsForeignSaveVips *) gobject;

	VIPS_UNREF(vips->target);

	G_OBJECT_CLASS(vips_foreign_save_vips_parent_class)->dispose(gobject);
}

static int
vips_foreign_save_vips_build(VipsObject *object)
{
	VipsForeignSaveVips *vips = (VipsForeignSaveVips *) object;

	const char *filename;

	if (VIPS_OBJECT_CLASS(vips_foreign_save_vips_parent_class)->build(object))
		return -1;

	if ((filename =
				vips_connection_filename(VIPS_CONNECTION(vips->target)))) {
		VipsForeignSave *save = (VipsForeignSave *) object;

		VipsImage *x;

		/* vips_image_build() has some magic for "w"
		 * preventing recursion and sending this directly to the
		 * saver built into iofuncs.
		 */
		if (!(x = vips_image_new_mode(filename, "w")))
			return -1;
		if (vips_image_write(save->ready, x)) {
			g_object_unref(x);
			return -1;
		}
		g_object_unref(x);
	}
	else {
		VipsObjectClass *class = VIPS_OBJECT_GET_CLASS(object);

		/* We could add load vips from memory, fd, via mmap etc. here.
		 * We should perhaps move iofuncs/vips.c into this file.
		 *
		 * For now, just fail unless there's a filename associated
		 * with this source.
		 */
		vips_error(class->nickname,
			"%s", _("no filename associated with target"));
		return -1;
	}

	if (vips_target_end(vips->target))
		return -1;

	return 0;
}

/* From vipsload.c.
 */
extern const char *vips__suffs[];

static void
vips_foreign_save_vips_class_init(VipsForeignSaveVipsClass *class)
{
	int i;

	GObjectClass *gobject_class = G_OBJECT_CLASS(class);
	VipsObjectClass *object_class = (VipsObjectClass *) class;
	VipsForeignClass *foreign_class = (VipsForeignClass *) class;
	VipsForeignSaveClass *save_class = (VipsForeignSaveClass *) class;

	gobject_class->dispose = vips_foreign_save_vips_dispose;

	object_class->nickname = "vipssave_base";
	object_class->description = _("save vips base class");
	object_class->build = vips_foreign_save_vips_build;

	foreign_class->suffs = vips__suffs;

	save_class->saveable = VIPS_SAVEABLE_ANY;
	for (i = 0; i < VIPS_CODING_LAST; i++)
		save_class->coding[i] = TRUE;
}

static void
vips_foreign_save_vips_init(VipsForeignSaveVips *vips)
{
}

typedef struct _VipsForeignSaveVipsFile {
	VipsForeignSaveVips parent_object;

	char *filename;
} VipsForeignSaveVipsFile;

typedef VipsForeignSaveVipsClass VipsForeignSaveVipsFileClass;

G_DEFINE_TYPE(VipsForeignSaveVipsFile, vips_foreign_save_vips_file,
	vips_foreign_save_vips_get_type());

static int
vips_foreign_save_vips_file_build(VipsObject *object)
{
	VipsForeignSaveVips *vips = (VipsForeignSaveVips *) object;
	VipsForeignSaveVipsFile *file = (VipsForeignSaveVipsFile *) object;

	if (!(vips->target = vips_target_new_to_file(file->filename)))
		return -1;

	if (VIPS_OBJECT_CLASS(vips_foreign_save_vips_file_parent_class)
			->build(object))
		return -1;

	return 0;
}

static void
vips_foreign_save_vips_file_class_init(VipsForeignSaveVipsFileClass *class)
{
	GObjectClass *gobject_class = G_OBJECT_CLASS(class);
	VipsObjectClass *object_class = (VipsObjectClass *) class;

	gobject_class->set_property = vips_object_set_property;
	gobject_class->get_property = vips_object_get_property;

	object_class->nickname = "vipssave";
	object_class->description = _("save image to file in vips format");
	object_class->build = vips_foreign_save_vips_file_build;

	VIPS_ARG_STRING(class, "filename", 1,
		_("Filename"),
		_("Filename to save to"),
		VIPS_ARGUMENT_REQUIRED_INPUT,
		G_STRUCT_OFFSET(VipsForeignSaveVipsFile, filename),
		NULL);
}

static void
vips_foreign_save_vips_file_init(VipsForeignSaveVipsFile *file)
{
}

typedef struct _VipsForeignSaveVipsTarget {
	VipsForeignSaveVips parent_object;

	VipsTarget *target;

} VipsForeignSaveVipsTarget;

typedef VipsForeignSaveVipsClass VipsForeignSaveVipsTargetClass;

G_DEFINE_TYPE(VipsForeignSaveVipsTarget, vips_foreign_save_vips_target,
	vips_foreign_save_vips_get_type());

static int
vips_foreign_save_vips_target_build(VipsObject *object)
{
	VipsForeignSaveVips *vips = (VipsForeignSaveVips *) object;
	VipsForeignSaveVipsTarget *target =
		(VipsForeignSaveVipsTarget *) object;

	vips->target = target->target;
	g_object_ref(vips->target);

	if (VIPS_OBJECT_CLASS(vips_foreign_save_vips_target_parent_class)
			->build(object))
		return -1;

	return 0;
}

static void
vips_foreign_save_vips_target_class_init(
	VipsForeignSaveVipsTargetClass *class)
{
	GObjectClass *gobject_class = G_OBJECT_CLASS(class);
	VipsObjectClass *object_class = (VipsObjectClass *) class;

	gobject_class->set_property = vips_object_set_property;
	gobject_class->get_property = vips_object_get_property;

	object_class->nickname = "vipssave_target";
	object_class->description = _("save image to target in vips format");
	object_class->build = vips_foreign_save_vips_target_build;

	VIPS_ARG_OBJECT(class, "target", 1,
		_("Target"),
		_("Target to save to"),
		VIPS_ARGUMENT_REQUIRED_INPUT,
		G_STRUCT_OFFSET(VipsForeignSaveVipsTarget, target),
		VIPS_TYPE_TARGET);
}

static void
vips_foreign_save_vips_target_init(VipsForeignSaveVipsTarget *target)
{
}

/**
 * vips_vipssave: (method)
 * @in: image to save
 * @filename: file to write to
 * @...: %NULL-terminated list of optional named arguments
 *
 * Write @in to @filename in VIPS format.
 *
 * See also: vips_vipsload().
 *
 * Returns: 0 on success, -1 on error.
 */
int
vips_vipssave(VipsImage *in, const char *filename, ...)
{
	va_list ap;
	int result;

	va_start(ap, filename);
	result = vips_call_split("vipssave", ap, in, filename);
	va_end(ap);

	return result;
}

/**
 * vips_vipssave_target: (method)
 * @in: image to save
 * @target: save image to this target
 * @...: %NULL-terminated list of optional named arguments
 *
 * As vips_vipssave(), but save to a target.
 *
 * Returns: 0 on success, -1 on error.
 */
int
vips_vipssave_target(VipsImage *in, VipsTarget *target, ...)
{
	va_list ap;
	int result;

	va_start(ap, target);
	result = vips_call_split("vipssave_target", ap, in, target);
	va_end(ap);

	return result;
}
