<?php
/**
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU AFFERO 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 AFFERO GENERAL PUBLIC LICENSE
 * along with this program; if not, see http://www.gnu.org/licenses
 * or write to the Free Software Foundation,Inc., 51 Franklin Street,
 * Fifth Floor, Boston, MA 02110-1301  USA
 * @Package Project templates
 * @copyright Andrew Mclaughlan 2014
 * @author Andrew Mclaughlan <andrew@mclaughlan.info>
 */

if (!defined('sugarEntry') || !sugarEntry) {
    die('Not A Valid Entry Point');
}

#[\AllowDynamicProperties]
class AM_ProjectTemplatesController extends SugarController
{

    //Loads the gantt view
    public function action_view_GanttChart()
    {
        $this->view = 'GanttChart';
    }


    public function action_create_project()
    {
        global $current_user, $db, $mod_strings;

        $project_name = $_POST['p_name'];
        $template_id = $db->quote($_POST['template_id']);
        $project_start = $_POST['start_date'];
        $copy_all = isset($_POST['copy_all_tasks']) ? 1 : 0;

        $copy_tasks = array();

        if (isset($_POST['tasks']) && is_array($_POST['tasks'])) {
            $copy_tasks = $_POST['tasks'];
        }

        //Get project start date
        if ($project_start!='') {
            $dateformat = $current_user->getPreference('datef');
            $startdate = DateTime::createFromFormat($dateformat, $project_start);
            $start = $startdate->format('Y-m-d');
        }

        $duration_unit = 'Days';


        //Get the project template
        $template = BeanFactory::newBean('AM_ProjectTemplates');
        $template->retrieve($template_id);

        $override_business_hours = (int)$template->override_business_hours;


        //------ build business hours array

        $dateformat = $current_user->getPreference('datef');

        $days = array("Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday");
        $businessHours = BeanFactory::getBean("AOBH_BusinessHours");
        $bhours = array();
        foreach ($days as $day) {
            $bh = $businessHours->getBusinessHoursForDay($day);

            if ($bh) {
                $bh = $bh[0];
                if ($bh->open) {
                    $open_h = $bh ? $bh->opening_hours : 9;
                    $close_h = $bh ? $bh->closing_hours : 17;

                    $start_time = DateTime::createFromFormat('Y-m-d', $start);

                    $start_time = $start_time->modify('+'.$open_h.' Hours');

                    $end_time = DateTime::createFromFormat('Y-m-d', $start);
                    $end_time = $end_time->modify('+'.$close_h.' Hours');

                    $hours = ($end_time->getTimestamp() - $start_time->getTimestamp())/(60*60);
                    if ($hours < 0) {
                        $hours = 0 - $hours ;
                    }

                    $bhours[$day] = $hours;
                } else {
                    $bhours[$day] = 0;
                }
            }
        }
        //-----------------------------------


        //default business hours array
        if ($override_business_hours != 1 || empty($bhours)) {
            $bhours = array('Monday' => 8,'Tuesday' => 8,'Wednesday' => 8, 'Thursday' => 8, 'Friday' => 8, 'Saturday' => 0, 'Sunday' => 0);
        }
        //---------------------------




        //create project from template
        $project = BeanFactory::newBean('Project');
        $project->name = $project_name;
        $project->estimated_start_date = $start;
        $project->status = $template->status;
        $project->priority = strtolower($template->priority);
        $project->description = $template->description;
        $project->assigned_user_id = $template->assigned_user_id;
        $project->save();


        //copy all resources from template to project
        $template->load_relationship('am_projecttemplates_users_1');
        $template_users = $template->get_linked_beans('am_projecttemplates_users_1', 'User');

        $template->load_relationship('am_projecttemplates_contacts_1');
        $template_contacts = $template->get_linked_beans('am_projecttemplates_contacts_1', 'Contact');

        $project->load_relationship('project_users_1');
        foreach ($template_users as $user) {
            $project->project_users_1->add($user->id);
        }

        $project->load_relationship('project_contacts_1');
        foreach ($template_contacts as $contact) {
            $project->project_contacts_1->add($contact->id);
        }


        $template->load_relationship('am_projecttemplates_project_1');
        $template->am_projecttemplates_project_1->add($project->id);

        //Get related project template tasks. Using sql query so that the results can be ordered.
        $get_tasks = "SELECT * FROM am_tasktemplates
                        WHERE id
                        IN (
                            SELECT am_tasktemplates_am_projecttemplatesam_tasktemplates_idb
                            FROM am_tasktemplates_am_projecttemplates_c
                            WHERE am_tasktemplates_am_projecttemplatesam_projecttemplates_ida = '".$template_id."'
                            AND deleted =0
                        )
                        AND deleted =0
                        ORDER BY am_tasktemplates.order_number ASC";
        $tasks = $db->query($get_tasks);
        //Create new project tasks from the template tasks
        $enddate_array = [];
        $count=1;
        while ($row = $db->fetchByAssoc($tasks)) {
            $project_task = BeanFactory::newBean('ProjectTask');
            $project_task->name = $row['name'];
            $project_task->status = $row['status'];
            $project_task->priority = strtolower($row['priority']);
            $project_task->percent_complete = $row['percent_complete'];
            $project_task->predecessors = $row['predecessors'];
            $project_task->milestone_flag = $row['milestone_flag'];
            $project_task->relationship_type = $row['relationship_type'];
            $project_task->task_number = $row['task_number'];
            $project_task->order_number = $row['order_number'];
            $project_task->estimated_effort = $row['estimated_effort'];
            $project_task->utilization = $row['utilization'];

            if ($copy_all == 0 && !in_array($row['id'], $copy_tasks)) {
                $project_task->assigned_user_id = null;
            } else {
                $project_task->assigned_user_id = $row['assigned_user_id'];
            }

            $project_task->description = $row['description'];
            $project_task->duration = $row['duration'];
            $project_task->duration_unit = $duration_unit;
            $project_task->project_task_id = $count;
            //Flag to prevent after save logichook running when project_tasks are created (see custom/modules/ProjectTask/updateProject.php)
            $project_task->set_project_end_date = 0;



            //
            //code block to calculate end date based on user's business hours
            //

            $duration = $project_task->duration;
            $enddate = $startdate;

            $d = 0;

            while ($duration > $d) {
                $day = $enddate->format('l');

                if ($bhours[$day] != 0) {
                    $d += 1;
                }
                $enddate = $enddate->modify('+1 Days');
            }
            $enddate = $enddate->modify('-1 Days');//readjust it back to remove 1 additional day added

            //----------------------------------



            if ($count == '1') {
                $project_task->date_start = $start;
                $end = $enddate->format('Y-m-d');
                $project_task->date_finish = $end;

                //add one day to let the next task start on next day of it's finish.
                $enddate_array[$count] = $enddate->modify('+1 Days')->format('Y-m-d');
            } else {
                $start_date = $count - 1;
                $startdate = DateTime::createFromFormat('Y-m-d', $enddate_array[$start_date]);
                $start = $startdate->format('Y-m-d');
                $project_task->date_start = $start;
                $end = $enddate->format('Y-m-d');
                $project_task->date_finish = $end;

                $startdate = $enddate;
                //add one day to let the next task start on next day of it's finish.
        $enddate_array[$count] = $enddate->modify('+1 Days')->format('Y-m-d'); //$end;
                $enddate = $end;
            }
            $project_task->save();
            //link tasks to the newly created project
            $project_task->load_relationship('projects');
            $project_task->projects->add($project->id);
            //Add assinged users from each task to the project resourses subpanel
            $project->load_relationship('project_users_1');
            $project->project_users_1->add($row['assigned_user_id']);
            $count++;
        }

        //set project end date to the same as end date of the last task
        $project->estimated_end_date = $end ?? '';
        $project->save();


        //redirct to new project
        SugarApplication::appendErrorMessage($mod_strings["LBL_NEW_PROJECT_CREATED"]);
        $params = array(
            'module'=> 'Project',
            'action'=>'DetailView',
            'record' => $project->id,
        );
        SugarApplication::redirect('index.php?' . http_build_query($params));
    }


    /**
     * @throws Exception
     */
    public function action_generate_chart()
    {
        global $current_language;
        $db = DBManagerFactory::getInstance();
        $mod_strings = return_module_language($current_language, 'AM_ProjectTemplates');


        include_once('modules/AM_ProjectTemplates/gantt.php');
        include_once('modules/AM_ProjectTemplates/project_table.php');

        $project_template = BeanFactory::newBean('AM_ProjectTemplates');
        $pid = $db->quote($_POST["pid"]);
        $project_template->retrieve($pid);

        //Get project tasks
        $project_template->load_relationship('am_tasktemplates_am_projecttemplates');
        $tasks = $project_template->get_linked_beans('am_tasktemplates_am_projecttemplates', 'AM_TaskTemplates');

        if (empty($tasks)) {
            return throw new Exception($mod_strings['LBL_TASKS_NOT_FOUND']);
        }

        //--- get the gantt chart start and end

        $start_date =  Date('Y-m-d');

        $query = "select max(duration) +1 from am_tasktemplates inner join am_tasktemplates_am_projecttemplates_c on am_tasktemplates_am_projecttemplatesam_tasktemplates_idb = am_tasktemplates.id and am_tasktemplates_am_projecttemplatesam_projecttemplates_ida = '{$pid}'";

        $duration = $db->getOne($query);

        if ($duration < 31) {
            $end_date = Date('Y-m-d', strtotime("+30 days"));
        } else {
            $end_date = Date('Y-m-d', strtotime("+ " . $duration . " days"));
        }

        //-------------------------------------------?>

        <script type="text/javascript">
            //Get the height if the #gantt div and add 18px
            var size = $('#gantt').height() +18;
            //Call jquery splitter function
            $('#project').splitter({
                outline: true
            });
            //Set height of gantt wrapping divs to make sure it shows
            $('#project').css('height', size+'px');
            $('.splitter-bar').css('height', size+'px');

        </script>
        <div id="project">
            <div id="left_pane">
                <?php new AM_ProjectTemplatesTable($project_template->id, $tasks); ?>
            </div>
            <div id="right_pane">
                <div id="gantt">
                    <?php new Gantt($start_date, $end_date, $tasks); ?>
                </div>
                <div id="arrow_divs" style=""></div>
            </div>
        </div>

<?php
        die();
    }

    //Create new project task
    public function action_update_GanttChart()
    {

        global $current_user, $db;

        $task_name = $_POST['task_name'];
        $project_id = $_POST['project_id'];
        $override_business_hours = (int)$_POST['override_business_hours'];
        $task_id = $_POST['task_id'] ?? '';
        $predecessor = $_POST['predecessor'];
        $rel_type = $_POST['rel_type'];
        $resource = $_POST['resource'];
        $percent = $_POST['percent'];
        $note = $_POST['note'];
        $milestone_flag = '';

        //$actual_duration = $_POST['actual_duration'];

        if ($_POST['milestone'] == 'Milestone') {
            $milestone_flag = '1';
        } else {
            if ($_POST['milestone'] == 'Task') {
                $milestone_flag = '0';
            }
        }

        $project_template = BeanFactory::newBean('AM_ProjectTemplates');
        $project_template->retrieve($project_id);


        $dateformat = $current_user->getPreference('datef');

        $startdate = DateTime::createFromFormat("d/m/Y", "01/01/2016");
        $start = $startdate->format('Y-m-d');

        //Take 1 off duration so that task displays in correct number of table cells in gantt chart.
        $duration = $_POST['duration'] -1;

        $duration_unit = $_POST['unit'];
        $actual_duration = 0;
        //Compensate for resulting negative number when a 0 duration is passed in above
        if ($duration < 0) {
            $duration = 0;
        }

        //
        //code block to calculate end date based on user's business hours
        //
        $enddate = $startdate->modify('+'.$duration.' '.$duration_unit);
        $enddate = $enddate->modify('-1 Days');//readjust it back to remove 1 additional day added
        $enddate = $enddate->format('Y-m-d');

        //---------------

        if ($percent > 0) {
            $status = 'In Progress';
        } else {
            $status = 'Not Started';
        }


        //count tasks
        $project_template->load_relationship('am_tasktemplates_am_projecttemplates');
        $tasks = $project_template->get_linked_beans('am_tasktemplates_am_projecttemplates', 'AM_TaskTemplates');

        $tid = (is_countable($tasks) ? count($tasks) : 0) + 1 ;

        if ($this->IsNullOrEmptyString($task_id)) {
            $this->create_task($task_name, $start, $enddate, $project_id, $milestone_flag, $status, $tid, $predecessor, $rel_type, $duration, $duration_unit, $resource, $percent, $note, $actual_duration, $tid);
        } else {
            $this->update_task($task_id, $task_name, $start, $enddate, $project_id, $milestone_flag, $status, $predecessor, $rel_type, $duration, $duration_unit, $resource, $percent, $note, $actual_duration);
        }
    }


    //mark project task as deleted
    public function action_delete_task()
    {
        $id = $_POST['task_id'];
        $task = BeanFactory::newBean('AM_TaskTemplates');
        $task->retrieve($id);
        $task->deleted = '1';
        $task->save();
    }

    //Returns new task start date including any lag via ajax call
    public function action_get_end_date()
    {
        global $timeDate;
        $db = DBManagerFactory::getInstance();

        $timeDate = new TimeDate();
        $id = $_POST['task_id'];
        $lag = $_POST['lag'];

        //Get the end date of the projectTask in raw database format
        $query = "SELECT date_finish FROM project_task WHERE id = '{$id}'";
        $end_date = $db->getOne($query);
        //Add 1 day onto end date for first day of new task
        $start_date = date('Y-m-d', strtotime($end_date. ' + 1 days'));
        //Add lag onto start date
        $start_date = date('Y-m-d', strtotime($start_date. ' + '.$lag.' days'));

        echo $timeDate->to_display_date($start_date, true);
        die();
    }


    //updates the order of the tasks
    public function action_update_order()
    {

       //convert quotes in json string back to normal
        $jArray = htmlspecialchars_decode((string) $_POST['orderArray']);

        //create object/array from json data
        $orderArray = json_decode($jArray);

        foreach ($orderArray as $id => $order_number) {
            $task = BeanFactory::newBean('AM_TaskTemplates');
            $task->retrieve($id);
            $task->order_number = $order_number;
            $task->save();
        }
    }
    //returns tasks for predecessor in the add task pop-up form
    public function action_get_predecessors()
    {
        global $mod_strings;
        $project_template = BeanFactory::newBean('AM_ProjectTemplates');
        $project_template->retrieve($_REQUEST["project_id"]);

        //Get tasks
        $project_template->load_relationship('am_tasktemplates_am_projecttemplates');
        $tasks = $project_template->get_linked_beans('am_tasktemplates_am_projecttemplates', 'AM_TaskTemplates');
        echo '<option rel="0" value="0">'.$mod_strings["LBL_NONE"].'</option>';
        foreach ($tasks as $task) {
            echo '<option rel="'.$task->task_number.'" value="'.$task->task_number.'">'.$task->name.'</opion>';
        }
        die();
    }


    public function create_task($name, $start, $end, $project_id, $milestone_flag, $status, $project_task_id, $predecessors, $rel_type, $duration, $duration_unit, $resource, $percent_complete, $description, $actual_duration, $order_number)
    {
        $task = BeanFactory::newBean('AM_TaskTemplates');
        $task->name = $name;
        //$task->date_start = $start;
        //$task->date_finish = $end;
        //$task->project_id = $project_id;
        $task->milestone_flag = $milestone_flag;
        $task->status = $status;
        $task->task_number = $project_task_id;
        $task->predecessors = $predecessors;
        $task->relationship_type = $rel_type;
        $task->duration = $duration + 1; //+1 to make duration appear correct in project table
        //$task->duration_unit = $duration_unit;
        $task->assigned_user_id = $resource;
        $task->percent_complete = $percent_complete;
        $task->description = $description;
        //$task->actual_duration = $actual_duration;
        $task->order_number = $order_number;
        $task_id = $task->save();

        $project_template = BeanFactory::newBean('AM_ProjectTemplates');
        $project_template->retrieve($project_id);
        $project_template->load_relationship('am_tasktemplates_am_projecttemplates');
        $project_template->get_linked_beans('am_tasktemplates_am_projecttemplates', 'AM_TaskTemplates');
        $project_template->am_tasktemplates_am_projecttemplates->add($task_id);
    }

    public function update_task($id, $name, $start, $end, $project_id, $milestone_flag, $status, $predecessors, $rel_type, $duration, $duration_unit, $resource, $percent_complete, $description, $actual_duration)
    {
        $task = BeanFactory::newBean('AM_TaskTemplates');

        $task->retrieve($id);
        $task->name = $name;
        //$task->date_start = $start;
        //$task->date_finish = $end;
        //$task->project_id = $project_id;
        $task->milestone_flag = $milestone_flag;
        $task->status = $status;
        // $task->parent_task_id = $parent_task_id;
        $task->predecessors = $predecessors;
        $task->relationship_type = $rel_type;
        $task->duration = $duration + 1; //+1 to make duration appear correct in project table
        //$task->duration_unit = $duration_unit;
        $task->assigned_user_id = $resource;
        $task->percent_complete = $percent_complete;
        //$task->actual_duration = $actual_duration;
        $task->description = $description;
        $task->save();
    }



    // Function for basic field validation (present and neither empty nor only white space
    public function IsNullOrEmptyString($question)
    {
        return (!isset($question) || trim($question)==='');
    }
}