<?php
/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
# ***** BEGIN LICENSE BLOCK *****
# This file is part of InDefero, an open source project management application.
# Copyright (C) 2008 Céondo Ltd and contributors.
#
# InDefero 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.
#
# InDefero 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
# ***** END LICENSE BLOCK ***** */

/**
 * Update an issue.
 *
 * We extend IDF_Form_IssueCreate to reuse the validation logic.
 */
class IDF_Form_IssueUpdate  extends IDF_Form_IssueCreate
{
    public $issue = null;

    public function initFields($extra=array())
    {
        $this->user = $extra['user'];
        $this->project = $extra['project'];
        $this->issue = $extra['issue'];
        if ($this->user->hasPerm('IDF.project-owner', $this->project)
            or $this->user->hasPerm('IDF.project-member', $this->project)) {
            $this->show_full = true;
        }
        if ($this->show_full) {
            $this->fields['summary'] = new Pluf_Form_Field_Varchar(
                                      array('required' => true,
                                            'label' => __('Summary'),
                                            'initial' => $this->issue->summary,
                                            'widget_attrs' => array(
                                                       'maxlength' => 200,
                                                       'size' => 67,
                                                                    ),
                                            ));
        }
        $this->fields['content'] = new Pluf_Form_Field_Varchar(
                                      array('required' => false,
                                            'label' => __('Comment'),
                                            'initial' => '',
                                            'widget' => 'Pluf_Form_Widget_TextareaInput',
                                            'widget_attrs' => array(
                                                       'cols' => 58,
                                                       'rows' => 9,
                                                                    ),
                                            ));
        if ($this->show_full) {
            $this->fields['status'] = new Pluf_Form_Field_Varchar(
                                      array('required' => true,
                                            'label' => __('Status'),
                                            'initial' => $this->issue->get_status()->name,
                                            'widget_attrs' => array(
                                                       'maxlength' => 20,
                                                       'size' => 15,
                                                                    ),
                                            ));
            $initial = ($this->issue->get_owner() == null) ? '' : $this->issue->get_owner()->login;
            $this->fields['owner'] = new Pluf_Form_Field_Varchar(
                                      array('required' => false,
                                            'label' => __('Owner'),
                                            'initial' => $initial,
                                            'widget_attrs' => array(
                                                       'maxlength' => 20,
                                                       'size' => 15,
                                                                    ),
                                            ));
            $tags = $this->issue->get_tags_list();
            for ($i=1;$i<7;$i++) {
                $initial = '';
                if (isset($tags[$i-1])) {
                    if ($tags[$i-1]->class != 'Other') {
                        $initial = (string) $tags[$i-1];
                    } else {
                        $initial = $tags[$i-1]->name;
                    }
                }
                $this->fields['label'.$i] = new Pluf_Form_Field_Varchar(
                                            array('required' => false,
                                                  'label' => __('Labels'),
                                            'initial' => $initial,
                                            'widget_attrs' => array(
                                                       'maxlength' => 50,
                                                       'size' => 20,
                                                                    ),
                                            ));
            }
        }
    }

    /**
     * We check that something is really changed.
     */
    public function clean()
    {
        $this->cleaned_data = parent::clean();
        // As soon as we know that at least one change was done, we
        // return the cleaned data and do not go further.
        if (strlen(trim($this->cleaned_data['content']))) {
            return $this->cleaned_data;
        }
        if ($this->show_full) {
            $status = $this->issue->get_status();
            if (trim($this->cleaned_data['status']) != $status->name) {
                return $this->cleaned_data;
            }
            if (trim($this->issue->summary) != trim($this->cleaned_data['summary'])) {
                return $this->cleaned_data;
            }
            $owner = self::findUser($this->cleaned_data['owner']);
            if ((is_null($owner) and !is_null($this->issue->get_owner()))
                or (!is_null($owner) and is_null($this->issue->get_owner()))
                or ((!is_null($owner) and !is_null($this->issue->get_owner())) and $owner->id != $this->issue->get_owner()->id)) {
                return $this->cleaned_data;
            }
            $tags = array();
            for ($i=1;$i<7;$i++) {
                if (strlen($this->cleaned_data['label'.$i]) > 0) {
                    if (strpos($this->cleaned_data['label'.$i], ':') !== false) {
                        list($class, $name) = explode(':', $this->cleaned_data['label'.$i], 2);
                        list($class, $name) = array(trim($class), trim($name));
                    } else {
                        $class = 'Other';
                        $name = trim($this->cleaned_data['label'.$i]);
                    }
                    $tags[] = array($class, $name);
                }
            }
            $oldtags = $this->issue->get_tags_list();
            foreach ($tags as $tag) {
                $found = false;
                foreach ($oldtags as $otag) {
                    if ($otag->class == $tag[0] and $otag->name == $tag[1]) {
                        $found = true;
                        break;
                    }
                }
                if (!$found) {
                    // new tag not found in the old tags
                    return $this->cleaned_data;
                }
            }
            foreach ($oldtags as $otag) {
                $found = false;
                foreach ($tags as $tag) {
                    if ($otag->class == $tag[0] and $otag->name == $tag[1]) {
                        $found = true;
                        break;
                    }
                }
                if (!$found) {
                    // old tag not found in the new tags
                    return $this->cleaned_data;
                }
            }
        }
        // no changes!
        throw new Pluf_Form_Invalid(__('No changes were entered.'));
    }

    /**
     * Save the model in the database.
     *
     * @param bool Commit in the database or not. If not, the object
     *             is returned but not saved in the database.
     * @return Object Model with data set from the form.
     */
    function save($commit=true)
    {
        if ($this->isValid()) {
            if ($this->show_full) {
                // Add a tag for each label
                $tags = array();
                $tagids = array();
                for ($i=1;$i<7;$i++) {
                    if (strlen($this->cleaned_data['label'.$i]) > 0) {
                        if (strpos($this->cleaned_data['label'.$i], ':') !== false) {
                            list($class, $name) = explode(':', $this->cleaned_data['label'.$i], 2);
                            list($class, $name) = array(trim($class), trim($name));
                        } else {
                            $class = 'Other';
                            $name = trim($this->cleaned_data['label'.$i]);
                        }
                        $tag = IDF_Tag::add($name, $this->project, $class);
                        $tags[] = $tag;
                        $tagids[] = $tag->id;
                    }
                }
                // Compare between the old and the new data
                $changes = array();
                $oldtags = $this->issue->get_tags_list();
                foreach ($tags as $tag) {
                    if (!Pluf_Model_InArray($tag, $oldtags)) {
                        if (!isset($changes['lb'])) $changes['lb'] = array();
                        if ($tag->class != 'Other') {
                            $changes['lb'][] = (string) $tag; //new tag
                        } else {
                            $changes['lb'][] = (string) $tag->name;
                        }
                    }
                }
                foreach ($oldtags as $tag) {
                    if (!Pluf_Model_InArray($tag, $tags)) {
                        if (!isset($changes['lb'])) $changes['lb'] = array();
                        if ($tag->class != 'Other') {
                            $changes['lb'][] = '-'.(string) $tag; //new tag
                        } else {
                            $changes['lb'][] = '-'.(string) $tag->name;
                        }
                    }
                }
                // Status, summary and owner
                $status = IDF_Tag::add(trim($this->cleaned_data['status']), $this->project, 'Status');
                if ($status->id != $this->issue->status) {
                    $changes['st'] = $status->name;
                }
                if (trim($this->issue->summary) != trim($this->cleaned_data['summary'])) {
                    $changes['su'] = trim($this->cleaned_data['summary']);
                }
                $owner = self::findUser($this->cleaned_data['owner']);
                if ((is_null($owner) and !is_null($this->issue->get_owner()))
                    or (!is_null($owner) and is_null($this->issue->get_owner()))
                    or ((!is_null($owner) and !is_null($this->issue->get_owner())) and $owner->id != $this->issue->get_owner()->id)) {
                    $changes['ow'] = (is_null($owner)) ? '---' : $owner->login;
                }
                // Update the issue
                $this->issue->batchAssoc('IDF_Tag', $tagids);
                $this->issue->summary = trim($this->cleaned_data['summary']);
                $this->issue->status = $status;
                $this->issue->owner = $owner;
            }
            // Create the comment
            $comment = new IDF_IssueComment();
            $comment->issue = $this->issue;
            $comment->content = $this->cleaned_data['content'];
            $comment->submitter = $this->user;
            if (!$this->show_full) $changes = array();
            $comment->changes = $changes;
            $comment->create();
            $this->issue->update();
            if ($this->issue->owner != $this->user->id and
                $this->issue->submitter != $this->user->id) {
                $this->issue->setAssoc($this->user); // interested user.
            }
            return $this->issue;
        }
        throw new Exception(__('Cannot save the model from an invalid form.'));
    }
}