/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* mail-ops.c: callbacks for the mail toolbar/menus */

/* 
 * Author : 
 *  Dan Winship <danw@helixcode.com>
 *  Peter Williams <peterw@helixcode.com>
 *
 * Copyright 2000 Helix Code, Inc. (http://www.helixcode.com)
 *
 * 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 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

#include <config.h>
#include <errno.h>
#include <gnome.h>
#include <libgnomeprint/gnome-print-master.h>
#include <libgnomeprint/gnome-print-master-preview.h>
#include "mail.h"
#include "mail-config.h"
#include "mail-threads.h"
#include "mail-tools.h"
#include "mail-ops.h"
#include "mail-local.h"
#include "folder-browser.h"
#include "filter/filter-editor.h"
#include "filter/filter-driver.h"
#include "widgets/e-table/e-table.h"

/* FIXME: is there another way to do this? */
#include "Evolution.h"
#include "evolution-storage.h"

#include "evolution-shell-client.h"

#ifndef HAVE_MKSTEMP
#include <fcntl.h>
#include <sys/stat.h>
#endif

struct post_send_data {
	CamelFolder *folder;
	gchar *uid;
	guint32 flags;
};

static gboolean
check_configured (FolderBrowser *fb)
{
	if (mail_config_is_configured ())
		return TRUE;

	if (fb) {
		mail_config_druid (fb->shell);
		return mail_config_is_configured ();
	} else
		return FALSE;
}

static gboolean
check_send_configuration (FolderBrowser *fb)
{
	MailConfigService *xport = NULL;

	/* Check general */
	
	if (!check_configured (fb)) {
		GtkWidget *message;
		
		message = gnome_warning_dialog_parented (_("You need to configure the mail client\n"
							   "before you can compose mail."),
							 GTK_WINDOW (gtk_widget_get_ancestor (GTK_WIDGET (fb),
											      GTK_TYPE_WINDOW)));
		mail_dialog_run_and_close (GNOME_DIALOG (message));
		return FALSE;
	}

	/* Check for an identity */

	if (!mail_config_get_default_identity ()) {
		GtkWidget *message;
		
		message = gnome_warning_dialog_parented (_("You need to configure an identity\n"
							   "before you can compose mail."),
							 GTK_WINDOW (gtk_widget_get_ancestor (GTK_WIDGET (fb),
											      GTK_TYPE_WINDOW)));
		mail_dialog_run_and_close (GNOME_DIALOG (message));
		return FALSE;
	}
	
	/* Check for a transport */
	
	xport = mail_config_get_transport ();
	if (!xport || !xport->url) {
		GtkWidget *message;
		
		message = gnome_warning_dialog_parented (_("You need to configure a mail transport\n"
							   "before you can compose mail."),
							 GTK_WINDOW (gtk_widget_get_ancestor (GTK_WIDGET (fb),
											      GTK_TYPE_WINDOW)));
		mail_dialog_run_and_close (GNOME_DIALOG (message));
		return FALSE;
	}

	return TRUE;
}

static void
main_select_first_unread (CamelObject *object, gpointer event_data, gpointer data)
{
	FolderBrowser *fb = FOLDER_BROWSER (data);
	/*ETable *table = E_TABLE_SCROLLED (fb->message_list->etable)->table;*/
  
	message_list_select (fb->message_list, -1, MESSAGE_LIST_SELECT_NEXT,
  			     0, CAMEL_MESSAGE_SEEN);
}

static void
select_first_unread (CamelObject *object, gpointer event_data, gpointer data)
{
	mail_op_forward_event (main_select_first_unread, object, event_data, data);
}

void
fetch_mail (GtkWidget *button, gpointer user_data)
{
	GSList *sources;

	if (!check_configured (FOLDER_BROWSER (user_data))) {
		GtkWidget *win = gtk_widget_get_ancestor (GTK_WIDGET (user_data),
							  GTK_TYPE_WINDOW);

		gnome_error_dialog_parented ("You have no mail sources "
					     "configured", GTK_WINDOW (win));
		return;
	}

	sources = mail_config_get_sources ();

	if (!sources || !sources->data) {
		GtkWidget *win = gtk_widget_get_ancestor (GTK_WIDGET (user_data),
							  GTK_TYPE_WINDOW);

		gnome_error_dialog_parented ("You have no mail sources "
					     "configured", GTK_WINDOW (win));
		return;
	}

	while (sources) {
		MailConfigService *source;

		source = (MailConfigService *) sources->data;
		sources = sources->next;

		if (!source || !source->url) {
			g_warning ("Bad source in fetch_mail??");
			continue;
		}

		mail_do_fetch_mail (source->url, source->keep_on_server, 
				    NULL, select_first_unread, user_data);
	}
}

static gboolean
ask_confirm_for_empty_subject (EMsgComposer *composer)
{
	GtkWidget *message_box;
	int button;

	message_box = gnome_message_box_new (_("This message has no subject.\nReally send?"),
					     GNOME_MESSAGE_BOX_QUESTION,
					     GNOME_STOCK_BUTTON_YES, GNOME_STOCK_BUTTON_NO,
					     NULL);

	button = mail_dialog_run_and_close (GNOME_DIALOG (message_box));

	if (button == 0)
		return TRUE;
	else
		return FALSE;
}

static void
free_psd (struct post_send_data *psd)
{
	if (!psd)
		return;

	if (psd->folder)
		camel_object_unref (CAMEL_OBJECT (psd->folder));
	if (psd->uid)
		g_free (psd->uid);
	g_free (psd);
}

void
composer_send_cb (EMsgComposer *composer, gpointer data)
{
	gchar *from = NULL;
	const MailConfigIdentity *id = NULL;
	MailConfigService *xport = NULL;
	CamelMimeMessage *message;
	const char *subject;

	struct post_send_data *psd = data;

	/* Config info */

	id = mail_config_get_default_identity ();
	xport = mail_config_get_transport ();

	/* Generate our from address */
	
	from = g_strdup (e_msg_composer_hdrs_get_from (E_MSG_COMPOSER_HDRS (composer->hdrs)));
	if (!from) {
		CamelInternetAddress *ciaddr;
		
		ciaddr = camel_internet_address_new ();
		camel_internet_address_add (ciaddr, id->name, id->address);
		from = camel_address_encode (CAMEL_ADDRESS (ciaddr));
		camel_object_unref (CAMEL_OBJECT (ciaddr));
	}
	
	/* Get the message */
	
	message = e_msg_composer_get_message (composer);

	/* Check for no subject */

	subject = camel_mime_message_get_subject (message);
	if (subject == NULL || subject[0] == '\0') {
		if (! ask_confirm_for_empty_subject (composer)) {
			camel_object_unref (CAMEL_OBJECT (message));
			free_psd (psd); /* will take care of psd == NULL */
			return;
		}
	}

	if (psd) {
		mail_do_send_mail (xport->url, message, from,
				   psd->folder, psd->uid, psd->flags, 
				   GTK_WIDGET (composer));
	} else {
		mail_do_send_mail (xport->url, message, from,
				   NULL, NULL, 0,
				   GTK_WIDGET (composer));
	}

	free_psd (psd);
}

static GtkWidget *
create_msg_composer (const char *url)
{
       MailConfigIdentity *id;
       gboolean send_html;
       gchar *sig_file = NULL;
       GtkWidget *composer_widget;

       id = mail_config_get_default_identity ();
       send_html = mail_config_send_html ();

       if (id)
               sig_file = id->sig;

       if (url != NULL)
               composer_widget = e_msg_composer_new_from_url (url);
       else
               composer_widget = e_msg_composer_new_with_sig_file (sig_file);

       e_msg_composer_set_send_html (E_MSG_COMPOSER (composer_widget), 
                                     send_html);

       return composer_widget;
}

void
compose_msg (GtkWidget *widget, gpointer user_data)
{
	GtkWidget *composer;

	if (!check_send_configuration (FOLDER_BROWSER (user_data)))
		return;

	composer = create_msg_composer (NULL);

	gtk_signal_connect (GTK_OBJECT (composer), "send",
			    GTK_SIGNAL_FUNC (composer_send_cb), NULL);
	gtk_widget_show (composer);
}

/* Send according to a mailto (RFC 2368) URL. */
void
send_to_url (const char *url)
{
	GtkWidget *composer;

	/* FIXME: no way to get folder browser? Not without
	 * big pain in the ass, as far as I can tell */
	if (!check_send_configuration (NULL))
		return;

	composer = create_msg_composer (url);

	gtk_signal_connect (GTK_OBJECT (composer), "send",
			    GTK_SIGNAL_FUNC (composer_send_cb), NULL);
	gtk_widget_show (composer);
}	

void
mail_reply (CamelFolder *folder, CamelMimeMessage *msg, const char *uid, gboolean to_all)
{
	EMsgComposer *composer;
	struct post_send_data *psd;

	/* FIXME: I just don't feel like implementing the folder-browser-passing
	 * garbage. */
	if (!check_send_configuration (NULL) || !folder ||
	    !msg || !uid)
		return;

	psd = g_new (struct post_send_data, 1);
	psd->folder = folder;
	camel_object_ref (CAMEL_OBJECT (psd->folder));
	psd->uid = g_strdup (uid);
	psd->flags = CAMEL_MESSAGE_ANSWERED;

	composer = mail_generate_reply (msg, to_all);

	gtk_signal_connect (GTK_OBJECT (composer), "send",
			    GTK_SIGNAL_FUNC (composer_send_cb), psd); 

	gtk_widget_show (GTK_WIDGET (composer));	
}

void
reply_to_sender (GtkWidget *widget, gpointer user_data)
{
	FolderBrowser *fb = FOLDER_BROWSER (user_data);

	mail_reply (fb->folder, fb->mail_display->current_message, 
	       fb->message_list->cursor_uid, FALSE);
}

void
reply_to_all (GtkWidget *widget, gpointer user_data)
{
	FolderBrowser *fb = FOLDER_BROWSER (user_data);

	mail_reply (fb->folder, fb->mail_display->current_message, 
	       fb->message_list->cursor_uid, TRUE);
}

static void
enumerate_msg (MessageList *ml, const char *uid, gpointer data)
{
	g_ptr_array_add ((GPtrArray *) data, g_strdup (uid));
}


void
forward_msg (GtkWidget *widget, gpointer user_data)
{
	FolderBrowser *fb = FOLDER_BROWSER (user_data);
	EMsgComposer *composer;
	CamelMimeMessage *cursor_msg;
	GPtrArray *uids;

	cursor_msg = fb->mail_display->current_message;
	if (!check_send_configuration (fb) || !cursor_msg)
		return;

	composer = E_MSG_COMPOSER (e_msg_composer_new ());

	uids = g_ptr_array_new();
	message_list_foreach (fb->message_list, enumerate_msg, uids);

	gtk_signal_connect (GTK_OBJECT (composer), "send",
			    GTK_SIGNAL_FUNC (composer_send_cb), NULL);

	mail_do_forward_message (cursor_msg,
				 fb->message_list->folder,
				 uids,
				 composer);
}

static void
transfer_msg (GtkWidget *widget, gpointer user_data, gboolean delete_from_source)
{
	FolderBrowser *fb = user_data;
	MessageList *ml = fb->message_list;
	GPtrArray *uids;
	char *uri, *physical, *path;
	char *desc;
	const char *allowed_types[] = { "mail", NULL };
	extern EvolutionShellClient *global_shell_client;
	static char *last = NULL;

	if (last == NULL)
		last = g_strdup ("");

	if (delete_from_source)
		desc = _("Move message(s) to");
	else
		desc = _("Copy message(s) to");

	evolution_shell_client_user_select_folder  (global_shell_client,
						    desc,
						    last, allowed_types, &uri, &physical);
	if (!uri)
		return;

	path = strchr (uri, '/');
	if (path && strcmp (last, path) != 0) {
		g_free (last);
		last = g_strdup (path);
	}
	g_free (uri);

	uids = g_ptr_array_new ();
	message_list_foreach (ml, enumerate_msg, uids);
	mail_do_transfer_messages (ml->folder, uids, delete_from_source, physical);
}

void
move_msg (GtkWidget *widget, gpointer user_data)
{
	transfer_msg (widget, user_data, TRUE);
}

void
copy_msg (GtkWidget *widget, gpointer user_data)
{
	transfer_msg (widget, user_data, FALSE);
}

void
mark_all_seen (BonoboUIHandler *uih, void *user_data, const char *path)
{
        FolderBrowser *fb = FOLDER_BROWSER(user_data);
        MessageList *ml = fb->message_list;
        GPtrArray *uids;

	if (ml->folder == NULL)
		return;

        uids = camel_folder_get_uids (ml->folder);
	mail_do_flag_messages (ml->folder, uids, FALSE,
			       CAMEL_MESSAGE_SEEN, CAMEL_MESSAGE_SEEN);
}

void
edit_msg (GtkWidget *widget, gpointer user_data)
{
	FolderBrowser *fb = FOLDER_BROWSER (user_data);
	GPtrArray *uids;
	extern CamelFolder *drafts_folder;

	if (fb->folder != drafts_folder) {
		GtkWidget *message;

		message = gnome_warning_dialog (_("You may only edit messages saved\n"
							   "in the Drafts folder."));
		mail_dialog_run_and_close (GNOME_DIALOG (message));
		return;
	}

	if (!check_send_configuration (fb))
		return;

	uids = g_ptr_array_new();
	message_list_foreach (fb->message_list, enumerate_msg, uids);

	mail_do_edit_messages (fb->folder, uids, (GtkSignalFunc) composer_send_cb);
}

void
delete_msg (GtkWidget *button, gpointer user_data)
{
	FolderBrowser *fb = user_data;
	MessageList *ml = fb->message_list;
	GPtrArray *uids;

	uids = g_ptr_array_new ();
	message_list_foreach (ml, enumerate_msg, uids);
	if (uids->len == 1) {
		guint32 flags;
		char *uid = uids->pdata[0];

		mail_tool_camel_lock_up ();
		flags = camel_folder_get_message_flags (ml->folder, uid);
		camel_folder_set_message_flags (ml->folder, uid,
						CAMEL_MESSAGE_DELETED,
						~flags);
		mail_tool_camel_lock_down ();
	} else {
		mail_do_flag_messages (ml->folder, uids, TRUE,
				       CAMEL_MESSAGE_DELETED,
				       CAMEL_MESSAGE_DELETED);
	}
}

void
expunge_folder (BonoboUIHandler *uih, void *user_data, const char *path)
{
	FolderBrowser *fb = FOLDER_BROWSER(user_data);

	e_table_model_pre_change (fb->message_list->table_model);

	if (fb->message_list->folder)
		mail_do_expunge_folder (fb->message_list->folder);
}

static void
filter_druid_clicked (GtkWidget *w, int button, FolderBrowser *fb)
{
	FilterContext *fc;

	if (button == 0) {
		char *user;

		fc = gtk_object_get_data (GTK_OBJECT (w), "context");
		user = g_strdup_printf ("%s/filters.xml", evolution_dir);
		rule_context_save ((RuleContext *)fc, user);
		g_free (user);
	}
	
	if (button != -1) {
		gnome_dialog_close (GNOME_DIALOG (w));
	}
}

void
filter_edit (BonoboUIHandler *uih, void *user_data, const char *path)
{
	FolderBrowser *fb = FOLDER_BROWSER (user_data);
	FilterContext *fc;
	char *user, *system;
	GtkWidget *w;

	fc = filter_context_new();
	user = g_strdup_printf ("%s/filters.xml", evolution_dir);
	system = g_strdup_printf ("%s/evolution/filtertypes.xml", EVOLUTION_DATADIR);
	rule_context_load ((RuleContext *)fc, system, user, NULL, NULL);
	g_free (user);
	g_free (system);

	if (((RuleContext *)fc)->error) {
		GtkWidget *dialog;
		gchar *err;

		err = g_strdup_printf (_("Error loading filter information:\n"
					 "%s"), ((RuleContext *)fc)->error);
		dialog = gnome_warning_dialog (err);
		g_free (err);
		
		mail_dialog_run_and_close (GNOME_DIALOG (dialog));
		return;
	}

	w = filter_editor_construct (fc);
	gtk_object_set_data_full (GTK_OBJECT (w), "context", fc, (GtkDestroyNotify)gtk_object_unref);
	gtk_signal_connect (GTK_OBJECT (w), "clicked", filter_druid_clicked, fb);
	gtk_widget_show (GTK_WIDGET (w));
}

void
vfolder_edit_vfolders (BonoboUIHandler *uih, void *user_data, const char *path)
{
        void vfolder_edit(void);

        vfolder_edit();
}

void
providers_config (BonoboUIHandler *uih, void *user_data, const char *path)
{
	mail_config ((FOLDER_BROWSER (user_data))->shell);
}

void
mail_print_msg (MailDisplay *md)
{
	GnomePrintMaster *print_master;
	GnomePrintContext *print_context;
	GtkWidget *preview;

	print_master = gnome_print_master_new ();

	print_context = gnome_print_master_get_context (print_master);
	gtk_html_print (md->html, print_context);

	preview = GTK_WIDGET (gnome_print_master_preview_new (
		print_master, "Mail Print Preview"));
	gtk_widget_show (preview);

	gtk_object_unref (GTK_OBJECT (print_master));
}

void
print_msg (GtkWidget *button, gpointer user_data)
{
	FolderBrowser *fb = user_data;

	mail_print_msg (fb->mail_display);
}

void
configure_folder(BonoboUIHandler *uih, void *user_data, const char *path)
{
	FolderBrowser *fb = FOLDER_BROWSER(user_data);

	local_reconfigure_folder(fb);
}

void
view_msg (GtkWidget *widget, gpointer user_data)
{
	FolderBrowser *fb = user_data;
	GPtrArray *uids;

	if (!fb->folder)
		return;

	uids = g_ptr_array_new ();
	message_list_foreach (fb->message_list, enumerate_msg, uids);
	mail_do_view_messages (fb->folder, uids, fb);
}

void
view_message (BonoboUIHandler *uih, void *user_data, const char *path)
{
        view_msg (NULL, user_data);
}

void
edit_message (BonoboUIHandler *uih, void *user_data, const char *path)
{
        edit_msg (NULL, user_data);
}

void
run_filter_ondemand (BonoboUIHandler *uih, gpointer user_data, const char *path)
{
	struct fb_ondemand_closure *oc = (struct fb_ondemand_closure *) user_data;
	FilterDriver *d;

	if (oc->fb->folder == NULL)
		return;

	printf ("Running filter \"%s\"\n", oc->rule->name);

	d = filter_driver_new (oc->fb->filter_context, 
			       mail_tool_filter_get_folder_func,
			       NULL);
	filter_driver_run (d, oc->fb->folder, oc->fb->folder,
			   FILTER_SOURCE_DEMAND, TRUE,
			   NULL, NULL, NULL);
}