/* The SpiderMonkey location and history objects implementation. */

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

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

#include "elinks.h"

#include "ecmascript/spidermonkey/util.h"

#include "bfu/dialog.h"
#include "cache/cache.h"
#include "cookies/cookies.h"
#include "dialogs/menu.h"
#include "dialogs/status.h"
#include "document/html/frames.h"
#include "document/document.h"
#include "document/forms.h"
#include "document/view.h"
#include "ecmascript/ecmascript.h"
#include "ecmascript/spidermonkey/navigator.h"
#include "intl/libintl.h"
#include "main/select.h"
#include "osdep/newwin.h"
#include "osdep/sysname.h"
#include "protocol/http/http.h"
#include "protocol/uri.h"
#include "session/history.h"
#include "session/location.h"
#include "session/session.h"
#include "session/task.h"
#include "terminal/tab.h"
#include "terminal/terminal.h"
#include "util/conv.h"
#include "util/memory.h"
#include "util/string.h"
#include "viewer/text/draw.h"
#include "viewer/text/form.h"
#include "viewer/text/link.h"
#include "viewer/text/vs.h"


static bool navigator_get_property_appCodeName(JSContext *ctx, unsigned int argc, JS::Value *vp);
static bool navigator_get_property_appName(JSContext *ctx, unsigned int argc, JS::Value *vp);
static bool navigator_get_property_appVersion(JSContext *ctx, unsigned int argc, JS::Value *vp);
static bool navigator_get_property_language(JSContext *ctx, unsigned int argc, JS::Value *vp);
static bool navigator_get_property_platform(JSContext *ctx, unsigned int argc, JS::Value *vp);
static bool navigator_get_property_userAgent(JSContext *ctx, unsigned int argc, JS::Value *vp);

static void
navigator_finalize(JS::GCContext *op, JSObject *obj)
{
#ifdef ECMASCRIPT_DEBUG
	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
#endif
}

JSClassOps navigator_ops = {
	nullptr,  // addProperty
	nullptr,  // deleteProperty
	nullptr,  // enumerate
	nullptr,  // newEnumerate
	nullptr,  // resolve
	nullptr,  // mayResolve
	navigator_finalize,  // finalize
	nullptr,  // call
	nullptr,  // construct
	JS_GlobalObjectTraceHook
};

JSClass navigator_class = {
	"navigator",
	JSCLASS_HAS_RESERVED_SLOTS(1),
	&navigator_ops
};

/* Tinyids of properties.  Use negative values to distinguish these
 * from array indexes (even though this object has no array elements).
 * ECMAScript code should not use these directly as in navigator[-1];
 * future versions of ELinks may change the numbers.  */
enum navigator_prop {
	JSP_NAVIGATOR_APP_CODENAME = -1,
	JSP_NAVIGATOR_APP_NAME     = -2,
	JSP_NAVIGATOR_APP_VERSION  = -3, 
	JSP_NAVIGATOR_LANGUAGE     = -4,
	/* JSP_NAVIGATOR_MIME_TYPES = -5, */
	JSP_NAVIGATOR_PLATFORM     = -6,
	/* JSP_NAVIGATOR_PLUGINS   = -7, */
	JSP_NAVIGATOR_USER_AGENT   = -8,
};
JSPropertySpec navigator_props[] = {
	JS_PSG("appCodeName", navigator_get_property_appCodeName, JSPROP_ENUMERATE),
	JS_PSG("appName",	navigator_get_property_appName, JSPROP_ENUMERATE),
	JS_PSG("appVersion",	navigator_get_property_appVersion, JSPROP_ENUMERATE),
	JS_PSG("language",	navigator_get_property_language, JSPROP_ENUMERATE),
	JS_PSG("platform",	navigator_get_property_platform, JSPROP_ENUMERATE),
	JS_PSG("userAgent",	navigator_get_property_userAgent, JSPROP_ENUMERATE),
	JS_PS_END
};


/* @navigator_class.getProperty */

static bool
navigator_get_property_appCodeName(JSContext *ctx, unsigned int argc, JS::Value *vp)
{
#ifdef ECMASCRIPT_DEBUG
	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
#endif
	JS::CallArgs args = CallArgsFromVp(argc, vp);
	args.rval().setString(JS_NewStringCopyZ(ctx, "Mozilla")); /* More like a constant nowadays. */

	return true;
}

static bool
navigator_get_property_appName(JSContext *ctx, unsigned int argc, JS::Value *vp)
{
#ifdef ECMASCRIPT_DEBUG
	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
#endif
	JS::CallArgs args = CallArgsFromVp(argc, vp);
	args.rval().setString(JS_NewStringCopyZ(ctx,
	"ELinks (roughly compatible with Netscape Navigator, Mozilla and Microsoft Internet Explorer)"));

	return true;
}

static bool
navigator_get_property_appVersion(JSContext *ctx, unsigned int argc, JS::Value *vp)
{
#ifdef ECMASCRIPT_DEBUG
	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
#endif
	JS::CallArgs args = CallArgsFromVp(argc, vp);
	args.rval().setString(JS_NewStringCopyZ(ctx, VERSION));

	return true;
}

static bool
navigator_get_property_language(JSContext *ctx, unsigned int argc, JS::Value *vp)
{
#ifdef ECMASCRIPT_DEBUG
	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
#endif
	JS::CallArgs args = CallArgsFromVp(argc, vp);

#ifdef CONFIG_NLS
	if (get_opt_bool("protocol.http.accept_ui_language", NULL)) {
		args.rval().setString(JS_NewStringCopyZ(ctx, language_to_iso639(current_language)));
		return true;
	}
#endif
	args.rval().setUndefined();

	return true;
}

static bool
navigator_get_property_platform(JSContext *ctx, unsigned int argc, JS::Value *vp)
{
#ifdef ECMASCRIPT_DEBUG
	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
#endif
	JS::CallArgs args = CallArgsFromVp(argc, vp);
	args.rval().setString(JS_NewStringCopyZ(ctx, system_name));

	return true;
}

static bool
navigator_get_property_userAgent(JSContext *ctx, unsigned int argc, JS::Value *vp)
{
#ifdef ECMASCRIPT_DEBUG
	fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
#endif
	JS::CallArgs args = CallArgsFromVp(argc, vp);
	char *optstr;

	optstr = get_opt_str("protocol.http.user_agent", NULL);

	if (*optstr && strcmp(optstr, " ")) {
		char *ustr, ts[64] = "";
		static char custr[256];
		/* TODO: Somehow get the terminal in which the
		 * document is actually being displayed.  */
		struct terminal *term = get_default_terminal();

		if (term) {
			unsigned int tslen = 0;

			ulongcat(ts, &tslen, term->width, 3, 0);
			ts[tslen++] = 'x';
			ulongcat(ts, &tslen, term->height, 3, 0);
		}
		ustr = subst_user_agent(optstr, VERSION_STRING, system_name, ts);

		if (ustr) {
			safe_strncpy(custr, ustr, 256);
			mem_free(ustr);
			args.rval().setString(JS_NewStringCopyZ(ctx, custr));

			return true;
		}
	}
	args.rval().setString(JS_NewStringCopyZ(ctx, system_name));

	return true;
}