//
//	aegis - project change supervisor
//	Copyright (C) 2004-2008 Peter Miller
//
//	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/>.
//

#include <common/ac/ctype.h>
#include <common/ac/string.h>

#include <common/str_list.h>
#include <libaegis/change.h>
#include <libaegis/change/signedoffby.h>
#include <libaegis/cstate.h>
#include <libaegis/option.h>
#include <libaegis/user.h>


static string_ty *
trim_right(string_ty *s)
{
    size_t len = s->str_length;
    while (len > 0 && s->str_text[len - 1] == '\n')
	--len;
    return str_n_from_c(s->str_text, len);
}


void
change_signed_off_by(change::pointer cp, user_ty::pointer up)
{
    //
    // If the email address is already present, don't do anything else.
    //
    nstring email_address = up->get_email_address();
    cstate_ty *cstate_data = cp->cstate_get();
    string_ty *desc = trim_right(cstate_data->description);
    string_list_ty wl;
    wl.split(desc, "\n", true);
    bool last_was_sob = false;
    for (size_t j = 0; j < wl.nstrings; ++j)
    {
	string_ty *s = wl.string[j];
	last_was_sob = (0 == strncasecmp(s->str_text, "signed-off-by:", 14));
	if (!last_was_sob)
	    continue;
	const char *sp = s->str_text + 14;
	while (*sp && isspace((unsigned char)*sp))
	    ++sp;
	if (0 == strcasecmp(sp, email_address.c_str()))
	    return;
    }

    //
    // Tack the email address onto the end of the description.
    //
    str_free(cstate_data->description);
    cstate_data->description =
	str_format
	(
	    "%s\n%sSigned-off-by: %s",
	    desc->str_text,
	    (last_was_sob ? "" : "\n"),
	    email_address.c_str()
	);
    str_free(desc);
}


bool
change_signed_off_by_get(change::pointer cp)
{
    pconf_ty *pconf_data = change_pconf_get(cp, 0);
    return (option_signed_off_by_get(pconf_data->signed_off_by));
}