1<?php
2/**
3 * Class helper_plugin_bureaucracyau_fieldusers
4 *
5 * Create multi-user input, with autocompletion
6 */
7class helper_plugin_bureaucracyau_fieldusers extends helper_plugin_bureaucracyau_fieldtextbox {
8
9    /**
10     * Arguments:
11     *  - cmd
12     *  - label
13     *  - ^ (optional)
14     *
15     * @param array $args The tokenized definition, only split at spaces
16     */
17    public function initialize($args) {
18        parent::initialize($args);
19        $this->tpl['class'] .= ' userspicker';
20    }
21
22    /**
23     * Allow receiving user attributes by ".". Ex. user.name
24     * You can pass an optional argument to user.grps enclosed in brackets, used as an groups delimiter Ex. user.grps(, )
25     *
26     * @return string
27     */
28    public function getReplacementPattern() {
29        $label = $this->opt['label'];
30        return '/(@@|##)' . preg_quote($label, '/') .
31            '(?:\((?P<delimiter>.*?)\))?' .//delimiter
32            '(?:\.(?P<attribute>.*?))?' .  //match attribute after "."
33            '\1/si';
34    }
35
36    /**
37     * Used as an callback for preg_replace_callback
38     *
39     * @param $matches
40     * @return string
41     */
42    public function replacementValueCallback($matches) {
43        /** @var DokuWiki_Auth_Plugin $auth */
44        global $auth;
45
46        $value = $this->opt['value'];
47        //copy the value by default
48        if (is_array($matches[2]) && count($matches[2]) == 2) {
49            return is_null($value) || $value === false ? $matches[0] : $value;
50        }
51
52        $attribute = isset($matches['attribute']) ? $matches['attribute'] : '';
53        //check if matched string containts a pair of brackets
54        $delimiter = preg_match('/\(.*\)/s', $matches[0]) ? $matches['delimiter'] : ', ';
55        $users     = array_map('trim', explode(',', $value));
56
57        switch($attribute) {
58            case '':
59                return implode($delimiter, $users);
60            case 'name':
61            case 'mail':
62                return implode($delimiter, array_map(function ($user) use ($auth, $attribute) {
63                    return $auth->getUserData($user)[$attribute];
64                }, $users));
65            default:
66                return $matches[0];
67        }
68    }
69
70    /**
71     * Return the callback for user replacement
72     *
73     * @return array
74     */
75    public function getReplacementValue() {
76        return array($this, 'replacementValueCallback');
77    }
78
79    /**
80     * Validate value of field
81     *
82     * @throws Exception when user not exists
83     */
84    protected function _validate() {
85        parent::_validate();
86
87        /** @var DokuWiki_Auth_Plugin $auth */
88        global $auth;
89        $users = array_filter(preg_split('/\s*,\s*/', $this->getParam('value')));
90        foreach ($users as $user) {
91            if ($auth->getUserData($user) === false) {
92                throw new Exception(sprintf($this->getLang('e_users'), hsc($this->getParam('display'))));
93            }
94        }
95    }
96}
97