<?php

class TicketController extends BaseController implements CRUD {

    use RequiresAuth, CheckCSRF;

    // list all tickts
    public function index($f3){

        $this->requireLogin();

        $filter = $f3->get('GET.status');

        // retrieve tickets
        $ticket_mapper = new Ticket($this->getDB());

        if($filter){
            $tickets = $ticket_mapper->findFiltered($filter);
        } else {
            $tickets = $ticket_mapper->findAll();
        }

        // render
        $this->renderView('views/ticket/index.html', 
            ['tickets' => $tickets]
        );

        $f3->clear('SESSION.error');
    }

    // view a single ticket
    // TODO_PROJECTS: show a link back to the related project
    public function view($f3){
        $this->requireLogin();

        $ticket_id = $f3->get('PARAMS.id');
        $ticket_mapper = new Ticket($this->getDB());
        $ticket = $ticket_mapper->findById($ticket_id);

        if(!$ticket){
            $this->f3->set('SESSION.error', 'Ticket not found');
            $this->f3->reroute('/tickets');
            return;
        }

        $assigned_user = $ticket->getAssignedUser();
        $ticket_history = $ticket->getHistory();

        $map_statuses = array_column((new TicketStatus($this->getDB()))->findAll(), 'name', 'id');
        $map_priorities = array_column((new TicketStatus($this->getDB()))->findAll(), 'name', 'id');
        $map_users = array_column($this->getDB()->exec('SELECT id, display_name FROM users'), 'display_name', 'id');
        

        // render
        $this->renderView('views/ticket/view.html', [
            'ticket' => $ticket,
            'assigned_user' => $assigned_user,
            'attachments' => $ticket->attachments(),
            'comments' => $ticket->comments(),
            'parent_tickets' => $ticket->getParentTickets(),
            'child_tickets' => $ticket->getChildTickets(),
            'ticket_meta' => $ticket->getMetaAssoc(),
            'ticket_history' => $ticket_history,
            'map' => [
                'statuses' => $map_statuses, 
                'priorities' => $map_priorities, 
                'users' => $map_users
            ]
        ]);

    }

    // show create form
    // TODO_PROJECTS: dropdown to associate ticket with project
    public function createForm($f3){
        $db = $this->getDB();
        $priorities = (new TicketPriority($db))->findAll();
        $statuses = (new TicketStatus($db))->findAll();

        $all_tags_model = new \Tag($this->getDB());
        $all_tags = $all_tags_model->find([], ['order' => 'name ASC']); // get all tags

        // TODO: this needs moving into a model?
        $users = $this->getDB()->exec('SELECT id, username, display_name FROM users ORDER BY display_name ASC');
        $users = array_merge([['id'=>'-1', 'display_name'=>'--']], $users);

        $this->requireLogin();
        $this->renderView('views/ticket/create.html',[
            'priorities' => $priorities,
            'statuses' => $statuses,
            'users' => $users,
            'all_tags' => $all_tags
        ]);
    }

    // handle POST
    // including custom forms
    public function create($f3){
        
        $this->requireLogin();
        $this->checkCSRF($f3, '/ticket/create');

        $data = [
            'title' => $this->f3->get('POST.title'),
            'created_at' => $this->f3->get('POST.created_at'),
            'description' => $this->f3->get('POST.description'),
            'priority_id' => $this->f3->get('POST.priority_id'),
            'status_id' => $this->f3->get('POST.status_id'),
            'created_by' => $this->f3->get('SESSION.user.id'),
            'assigned_to' => $this->f3->get('POST.assigned_to') == '-1' ? null : $this->f3->get('POST.assigned_to')
        ];

        $ticket_mapper = new Ticket($this->getDB());
        $new_ticket_id = $ticket_mapper->createTicket($data);

        // custom field
        // $meta_keys = $this->f3->get('POST.meta_key');
        // $meta_values = $this->f3->get('POST.meta_value');
        // $meta_assoc = $ticket_mapper->assocMetaFromKeyValue($meta_keys, $meta_values);
        // $ticket_mapper->setCustomFields($meta_assoc);

        $new_ticket = $ticket_mapper->findById($new_ticket_id);
        if($new_ticket){
            // TAG handling for create
            $posted_tags = $this->f3->get('POST.tags');
            if(!empty($posted_tags) && is_array($posted_tags)){
                $new_ticket->setTags($posted_tags);
            }
        }

        $this->f3->set('SESSION.message', 'Ticket #' . $new_ticket_id . ' created successfully.');
        $this->f3->reroute('/ticket/' . $new_ticket_id);
    }

    // show edit form
    // including custom forms
    // TODO_PROJECTS: allow reasssigning or removing a project association
    public function editForm($f3)
    {
        $this->requireLogin();

        $ticket_id = $f3->get('PARAMS.id');
        $ticket_mapper = new Ticket($this->getDB());
        $ticket = $ticket_mapper->findById($ticket_id);

        if(!$ticket){
            $this->f3->set('SESSION.error', 'Ticket not found.');
            $this->f3->reroute('/tickets');
        }

        // 
        $f3->set('js', 'markdown_preview.js');

        // dropdowns
        $priorities = (new TicketPriority($this->getDB()))->findAll();
        $statuses = (new TicketStatus($this->getDB()))->findAll();
        $all_tags_model = new \Tag($this->getDB());
        $all_tags = $all_tags_model->find([], ['order' => 'name ASC']);

        // TODO: this needs moving into a model?
        $users = $this->getDB()->exec('SELECT id, username, display_name FROM users ORDER BY display_name ASC');
        $users = array_merge([['id'=>'-1', 'display_name'=>'--']], $users);

        // paradox - empty($ticket->tags) was returning true, when there were items present
        $current_ticket_tag_ids = [];
        if(count($ticket->tags) > 0){
            foreach($ticket->tags as $current_tag_data){
                $current_ticket_tag_ids[] = $current_tag_data['id'];
            }
        }

        $this->renderView('views/ticket/edit.html',[
            'ticket' => $ticket,
            'ticket_meta' => $ticket->getMeta(),
            'priorities' => $priorities,
            'statuses' => $statuses,
            'users' => $users,
            'all_tags' => $all_tags,
            'current_ticket_tag_ids' => $current_ticket_tag_ids
            ]
        );
        return;
    }

    // process edit POST TODO: if assigned or admin
    public function update($f3)
    {

        $this->requireLogin();
        $this->checkCSRF($f3, '/ticket/create');

        $ticket_id = $f3->get('PARAMS.id');
        $ticket_mapper = new Ticket($this->getDB());
        $ticket = $ticket_mapper->findById($ticket_id);

        if(!$ticket){
            $f3->set('SESSION.error', 'Ticket not found.');
            $f3->reroute('/tickets');
        }

        $data = [
            'title' => $f3->get('POST.title'),
            'created_at' => $f3->get('POST.created_at'),
            'description' => $f3->get('POST.description'),
            'priority_id' => $f3->get('POST.priority_id'),
            'status_id' => $f3->get('POST.status_id'),
            'updated_by' => $f3->get('SESSION.user.id') ,
            'assigned_to' => $f3->get('POST.assigned_to') == -1 ? null : $f3->get('POST.assigned_to')
        ];
        $ticket->updateTicket($data);
        
        // deal with meta data / custom fields
        // $meta_keys = $this->f3->get('POST.meta_key');
        // $meta_values = $this->f3->get('POST.meta_value');
        // $meta_assoc = $ticket->assocMetaFromKeyValue($meta_keys, $meta_values);
        // $ticket->setCustomFields($meta_assoc);

        $posted_tags = $f3->get('POST.tags');
        if(is_array($posted_tags)){
            $ticket->setTags($posted_tags);
        } elseif (empty($posted_tags)){
            $ticket->setTags([]);
        }

        $f3->set('SESSION.message', 'Ticket #' . $ticket_id . ' updated successfully.') ;
        $f3->reroute('/ticket/' . $ticket_id);
    }

    // subtask
    public function addSubtask($f3){
        $this->requireLogin();
        $this->checkCSRF($f3, '/ticket/create');

        $parent_id = (int) $f3->get('PARAMS.id');
        $child_id = (int) $f3->get('POST.child_ticket_id');

        $ticket_mapper = new Ticket($this->getDB());
        $ticket = $ticket_mapper->findById($parent_id);

        if(!$ticket){
            $this->f3->set('SESSION.error', 'Parent Ticket not found');
            $this->f3->reroute('/tickets');
        }
        $ticket->addChildTicket($child_id);
        $this->f3->reroute('/ticket/' . $parent_id);
    }

    public function delete(): void
    {
        $this->requireLogin();

        $ticket_id = (int)$this->f3->get('PARAMS.id');
        $ticket_mapper = new Ticket($this->getDB());
        $ticket = $ticket_mapper->findById($ticket_id);

        if(!$ticket){
            $this->f3->set('SESSION.error', 'Ticket not found');
            $this->f3->reroute('/tickets');
        }

        $ticket->softDelete();
        $this->f3->reroute('/tickets');
    }

}