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path: root/includes/view/ShiftCalendarShiftRenderer.php
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<?php

namespace Engelsystem;

/**
 * Renders a single shift for the shift calendar
 */
class ShiftCalendarShiftRenderer
{

    /**
     * Renders a shift
     *
     * @param Shift $shift
     *          The shift to render
     * @param User  $user
     *          The user who is viewing the shift calendar
     */
    public function render($shift, $needed_angeltypes, $shift_entries, $user)
    {
        $info_text = "";
        if ($shift['title'] != '') {
            $info_text = glyph('info-sign') . $shift['title'] . '<br>';
        }
        list($shift_signup_state, $shifts_row) = $this->renderShiftNeededAngeltypes(
            $shift,
            $needed_angeltypes,
            $shift_entries,
            $user
        );

        $class = $this->classForSignupState($shift_signup_state);

        $blocks = ceil(($shift["end"] - $shift["start"]) / ShiftCalendarRenderer::SECONDS_PER_ROW);
        $blocks = max(1, $blocks);
        return [
            $blocks,
            div(
                'shift panel panel-' . $class . '" style="height: ' . ($blocks * ShiftCalendarRenderer::BLOCK_HEIGHT - ShiftCalendarRenderer::MARGIN) . 'px"',
                [
                    $this->renderShiftHead($shift),
                    div('panel-body', [
                        $info_text,
                        Room_name_render([
                            'RID'  => $shift['RID'],
                            'Name' => $shift['room_name']
                        ])
                    ]),
                    $shifts_row,
                    div('shift-spacer')
                ]
            )
        ];
    }

    private function classForSignupState(ShiftSignupState $shiftSignupState)
    {
        switch ($shiftSignupState->getState()) {
            case ShiftSignupState::ADMIN:
            case ShiftSignupState::OCCUPIED:
                return 'success';

            case ShiftSignupState::SIGNED_UP:
                return 'primary';

            case ShiftSignupState::SHIFT_ENDED:
                return 'default';

            case ShiftSignupState::ANGELTYPE:
            case ShiftSignupState::COLLIDES:
                return 'warning';

            case ShiftSignupState::FREE:
                return 'danger';
        }
    }

    private function renderShiftNeededAngeltypes($shift, $needed_angeltypes, $shift_entries, $user)
    {
        global $privileges;

        $shift_entries_filtered = [];
        foreach ($needed_angeltypes as $needed_angeltype) {
            $shift_entries_filtered[$needed_angeltype['id']] = [];
        }
        foreach ($shift_entries as $shift_entry) {
            $shift_entries_filtered[$shift_entry['TID']][] = $shift_entry;
        }

        $html = "";
        $shift_signup_state = null;
        foreach ($needed_angeltypes as $angeltype) {
            if ($angeltype['count'] > 0 || count($shift_entries_filtered[$angeltype['id']]) > 0) {
                list($angeltype_signup_state, $angeltype_html) = $this->renderShiftNeededAngeltype(
                    $shift,
                    $shift_entries_filtered[$angeltype['id']],
                    $angeltype,
                    $user
                );
                if ($shift_signup_state == null) {
                    $shift_signup_state = $angeltype_signup_state;
                } else {
                    $shift_signup_state->combineWith($angeltype_signup_state);
                }
                $html .= $angeltype_html;
            }
        }
        if ($shift_signup_state == null) {
            $shift_signup_state = new ShiftSignupState(ShiftSignupState::SHIFT_ENDED, 0);
        }

        if (in_array('user_shifts_admin', $privileges)) {
            $html .= '<li class="list-group-item">' . button(
                    page_link_to('user_shifts') . '&amp;shift_id=' . $shift['SID'],
                    _("Add more angels"),
                    'btn-xs'
                ) . '</li>';
        }
        if ($html != '') {
            return [
                $shift_signup_state,
                '<ul class="list-group">' . $html . '</ul>'
            ];
        }
        return [
            $shift_signup_state,
            ""
        ];
    }

    /**
     * Renders a list entry containing the needed angels for an angeltype
     *
     * @param Shift     $shift
     *          The shift which is rendered
     * @param Angeltype $angeltype
     *          The angeltype, containing informations about needed angeltypes and already signed up angels
     * @param User      $user
     *          The user who is viewing the shift calendar
     */
    private function renderShiftNeededAngeltype($shift, $shift_entries, $angeltype, $user)
    {
        $entry_list = [];
        foreach ($shift_entries as $entry) {
            $style = $entry['freeloaded'] ? " text-decoration: line-through;" : '';
            $entry_list[] = "<span style=\"$style\">" . User_Nick_render($entry) . "</span>";
        }
        $shift_signup_state = Shift_signup_allowed($user, $shift, $angeltype, null, null, $angeltype, $shift_entries);
        $inner_text = sprintf(
            ngettext("%d helper needed", "%d helpers needed", $shift_signup_state->getFreeEntries()),
            $shift_signup_state->getFreeEntries()
        );
        switch ($shift_signup_state->getState()) {
            case ShiftSignupState::ADMIN:
            case ShiftSignupState::FREE:
                // When admin or free display a link + button for sign up
                $entry_list[] = '<a href="' . page_link_to('user_shifts') . '&amp;shift_id=' . $shift['SID'] . '&amp;type_id=' . $angeltype['id'] . '">'
                    . $inner_text
                    . '</a> '
                    . button(
                        page_link_to('user_shifts') . '&amp;shift_id=' . $shift['SID'] . '&amp;type_id=' . $angeltype['id'],
                        _('Sign up'), 'btn-xs btn-primary'
                    );
                break;

            case ShiftSignupState::SHIFT_ENDED:
                // No link and add a text hint, when the shift ended
                $entry_list[] = $inner_text . ' (' . _('ended') . ')';
                break;

            case ShiftSignupState::ANGELTYPE:
                if ($angeltype['restricted'] == 1) {
                    // User has to be confirmed on the angeltype first
                    $entry_list[] = $inner_text . glyph('lock');
                } else {
                    // Add link to join the angeltype first
                    $entry_list[] = $inner_text . '<br />'
                        . button(
                            page_link_to('user_angeltypes') . '&action=add&angeltype_id=' . $angeltype['id'],
                            sprintf(_('Become %s'), $angeltype['name']),
                            'btn-xs'
                        );
                }
                break;

            case ShiftSignupState::COLLIDES:
            case ShiftSignupState::SIGNED_UP:
                // Shift collides or user is already signed up: No signup allowed
                $entry_list[] = $inner_text;
                break;

            case ShiftSignupState::OCCUPIED:
                // Shift is full
                break;
        }

        $shifts_row = '<li class="list-group-item">';
        $shifts_row .= '<strong>' . AngelType_name_render($angeltype) . ':</strong> ';
        $shifts_row .= join(", ", $entry_list);
        $shifts_row .= '</li>';
        return [
            $shift_signup_state,
            $shifts_row
        ];
    }

    /**
     * Renders the shift header
     *
     * @param Shift $shift
     *          The shift
     */
    private function renderShiftHead($shift)
    {
        global $privileges;

        $header_buttons = "";
        if (in_array('admin_shifts', $privileges)) {
            $header_buttons = '<div class="pull-right">' . table_buttons([
                    button(page_link_to('user_shifts') . '&edit_shift=' . $shift['SID'], glyph('edit'), 'btn-xs'),
                    button(page_link_to('user_shifts') . '&delete_shift=' . $shift['SID'], glyph('trash'), 'btn-xs')
                ]) . '</div>';
        }
        $shift_heading = date('H:i', $shift['start']) . ' &dash; '
            . date('H:i', $shift['end']) . ' &mdash; '
            . $shift['name'];
        return div('panel-heading', [
            '<a href="' . shift_link($shift) . '">' . $shift_heading . '</a>',
            $header_buttons
        ]);
    }
}