/*
 * Copyright 2011 Chris Young <chris@unsatisfactorysoftware.co.uk>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf 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; version 2 of the License.
 *
 * NetSurf 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/>.
 */

/** \file
 * Plugin=>external program handler (implementation)
*/

#include "amiga/os3support.h"

#include <stdlib.h>
#include <proto/dos.h>
#include <proto/exec.h>
#include <proto/intuition.h>
#include <proto/utility.h>

#include "utils/log.h"
#include "utils/messages.h"
#include "netsurf/plotters.h"
#include "netsurf/content.h"
#include "amiga/filetype.h"
#include "amiga/plugin_hack.h"
#include "content/content_protected.h"
#include "content/content_factory.h"
#include "content/llcache.h"


typedef struct amiga_plugin_hack_content {
	struct content base;
} amiga_plugin_hack_content;

static nserror amiga_plugin_hack_create(const content_handler *handler,
		lwc_string *imime_type, const struct http_parameter *params,
		llcache_handle *llcache, const char *fallback_charset,
		bool quirks, struct content **c);
static bool amiga_plugin_hack_convert(struct content *c);
static void amiga_plugin_hack_reformat(struct content *c, int width, int height);
static void amiga_plugin_hack_destroy(struct content *c);
static bool amiga_plugin_hack_redraw(struct content *c,
		struct content_redraw_data *data, const struct rect *clip,
		const struct redraw_context *ctx);
static void amiga_plugin_hack_open(struct content *c, struct browser_window *bw,
		struct content *page, struct object_params *params);
static void amiga_plugin_hack_close(struct content *c);
static nserror amiga_plugin_hack_clone(const struct content *old, struct content **newc);
static content_type amiga_plugin_hack_content_type(void);

static const content_handler amiga_plugin_hack_content_handler = {
	.create = amiga_plugin_hack_create,
	.data_complete = amiga_plugin_hack_convert,
	.reformat = amiga_plugin_hack_reformat,
	.destroy = amiga_plugin_hack_destroy,
	.redraw = amiga_plugin_hack_redraw,
	.open = amiga_plugin_hack_open,
	.close = amiga_plugin_hack_close,
	.clone = amiga_plugin_hack_clone,
	.type = amiga_plugin_hack_content_type,
	.no_share = false,
};

nserror amiga_plugin_hack_init(void)
{
	struct Node *node = NULL;
	lwc_string *type;
	nserror error;

	do {
		node = ami_mime_has_cmd(&type, node);

		if(node)
		{
			NSLOG(netsurf, INFO, "plugin_hack registered %s",
			      lwc_string_data(type));

			error = content_factory_register_handler(
				lwc_string_data(type), 
				&amiga_plugin_hack_content_handler);

			if (error != NSERROR_OK)
				return error;
		}

	}while (node != NULL);

	return NSERROR_OK;
}

nserror amiga_plugin_hack_create(const content_handler *handler,
		lwc_string *imime_type, const struct http_parameter *params,
		llcache_handle *llcache, const char *fallback_charset,
		bool quirks, struct content **c)
{
	amiga_plugin_hack_content *plugin;
	nserror error;

	plugin = calloc(1, sizeof(amiga_plugin_hack_content));
	if (plugin == NULL)
		return NSERROR_NOMEM;

	error = content__init(&plugin->base, handler, imime_type, params,
			llcache, fallback_charset, quirks);
	if (error != NSERROR_OK) {
		free(plugin);
		return error;
	}

	*c = (struct content *) plugin;

	return NSERROR_OK;
}

bool amiga_plugin_hack_convert(struct content *c)
{
	NSLOG(netsurf, INFO, "amiga_plugin_hack_convert");

	content_set_ready(c);
	content_set_done(c);

	content_set_status(c, "");

	return true;
}

void amiga_plugin_hack_destroy(struct content *c)
{
	amiga_plugin_hack_content *plugin = (amiga_plugin_hack_content *) c;

	NSLOG(netsurf, INFO, "amiga_plugin_hack_destroy %p", plugin);

	return;
}

bool amiga_plugin_hack_redraw(struct content *c,
		struct content_redraw_data *data, const struct rect *clip,
		const struct redraw_context *ctx)
{
	plot_style_t pstyle = {
		.fill_type = PLOT_OP_TYPE_SOLID,
		.fill_colour = 0xffffff,
		.stroke_colour = 0x000000,
		.stroke_width = plot_style_int_to_fixed(1),
	};
	struct rect rect;
	nserror res;

	NSLOG(netsurf, INFO, "amiga_plugin_hack_redraw");

	rect.x0 = data->x;
	rect.y0 = data->y;
	rect.x1 = data->x + data->width;
	rect.y1 = data->y + data->height;

	ctx->plot->rectangle(ctx, &pstyle, &rect);

	res = ctx->plot->text(ctx,
			      plot_style_font,
			      data->x, data->y+20,
			      lwc_string_data(content__get_mime_type(c)),
			      lwc_string_length(content__get_mime_type(c)));
	if (res != NSERROR_OK) {
		return false;
	}
	return true;
}

/**
 * Handle a window containing a CONTENT_PLUGIN being opened.
 *
 * \param  c       content that has been opened
 * \param  bw      browser window containing the content
 * \param  page    content of type CONTENT_HTML containing c, or 0 if not an
 *                 object within a page
 * \param  params  object parameters, or 0 if not an object
 */
void amiga_plugin_hack_open(struct content *c, struct browser_window *bw,
	struct content *page, struct object_params *params)
{
	NSLOG(netsurf, INFO, "amiga_plugin_hack_open %s",
	      nsurl_access(content_get_url(c)));

	if(c)
	{
		/* TODO: Do we need valid dimensions at this point? */
		c->width = 0;
		c->height = 0;
	}

	return;
}

void amiga_plugin_hack_close(struct content *c)
{
	NSLOG(netsurf, INFO, "amiga_plugin_hack_close");
	return;
}

void amiga_plugin_hack_reformat(struct content *c, int width, int height)
{
	NSLOG(netsurf, INFO, "amiga_plugin_hack_reformat");

	c->width = width;
	c->height = height;

	return;
}

nserror amiga_plugin_hack_clone(const struct content *old, struct content **newc)
{
	amiga_plugin_hack_content *plugin;
	nserror error;

	NSLOG(netsurf, INFO, "amiga_plugin_hack_clone");

	plugin = calloc(1, sizeof(amiga_plugin_hack_content));
	if (plugin == NULL)
		return NSERROR_NOMEM;

	error = content__clone(old, &plugin->base);
	if (error != NSERROR_OK) {
		content_destroy(&plugin->base);
		return error;
	}

	/* We "clone" the old content by replaying conversion */
	if (old->status == CONTENT_STATUS_READY || 
			old->status == CONTENT_STATUS_DONE) {
		if (amiga_plugin_hack_convert(&plugin->base) == false) {
			content_destroy(&plugin->base);
			return NSERROR_CLONE_FAILED;
		}
	}

	*newc = (struct content *) plugin;

	return NSERROR_OK;
}

content_type amiga_plugin_hack_content_type(void)
{
	return CONTENT_PLUGIN;
}

void amiga_plugin_hack_execute(struct hlcache_handle *c)
{
	lwc_string *plugincmd;
	char *full_cmd;
	BPTR in, out;

	if(c == NULL) return;

	plugincmd = ami_mime_content_to_cmd(c);
	if(plugincmd == NULL) return;

	full_cmd = ASPrintf("%s %s", lwc_string_data(plugincmd), nsurl_access(hlcache_handle_get_url(c)));

	if(full_cmd)
	{
#ifdef __amigaos4__
		NSLOG(netsurf, INFO, "Attempting to execute %s", full_cmd);

		in = Open("NIL:", MODE_OLDFILE);
		out = Open("NIL:", MODE_NEWFILE);

		SystemTags(full_cmd,
				SYS_Input, in,
				SYS_Output, out,
				SYS_Error, out,
				SYS_Asynch, TRUE,
				NP_Name, "NetSurf External Process",
				TAG_DONE);

		FreeVec(full_cmd);
#endif
	}
}