summaryrefslogtreecommitdiff
path: root/src/Bridge.php
blob: 9d59564d8530cfc3a1540c588c6fe7c1a7eabd5b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
<?php

require_once(__DIR__ . '/BridgeConf.php');
require_once(__DIR__ . '/Util.php');

class Bridge {
  protected $db;

  public function __construct($db = FALSE) {
    $this->db = $db ? $db :
      new PDO('mysql:host=' . DB_HOST . ';dbname=' . DB, DB_USER, DB_PASS);

    $this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
  }

  public function getPostId($messageId) {
    throw_if_null($messageId);

    $sql = 'SELECT post_id FROM posts ' .
           'WHERE message_id = ' . $this->db->quote($messageId);

    $row = $this->get_exactly_one_row($sql);
    return $row ? $row['post_id'] : false;
  }

  public function getMessageId($postId) {
    throw_if_null($postId);

    $sql = 'SELECT message_id FROM posts ' .
           'WHERE post_id = ' . $this->db->quote($postId);

    $row = $this->get_exactly_one_row($sql);
    return $row ? $row['message_id'] : false;
  }

  public function setPostId($messageId, $postId) {
    throw_if_null($messageId);
    throw_if_null($postId);

    $sql = 'UPDATE posts SET ' .
           'post_id = ' . $postId . ' ' . 
           'WHERE message_id = ' . $this->db->quote($messageId);

    $count = $this->db->exec($sql);

    if ($count != 1) {
      throw new Exception('Failed to set post id: ' . $messageId);
    }
  }

  public function getDefaultForumId($list) {
    throw_if_null($list);

    $sql = 'SELECT forum_id FROM forums ' .
           'WHERE list_name = ' . $this->db->quote($list);

    $row = $this->get_exactly_one_row($sql);
    return $row ? $row['forum_id'] : false;
  }

  public function getLists($forumId) {
    throw_if_null($forumId);

    $sql = 'SELECT list_name FROM forums ' .
           'WHERE forum_id = ' . $forumId;

    $result = $this->db->query($sql);

    $rows = $result->fetchAll(PDO::FETCH_COLUMN);
    $result->closeCursor();
    return $rows;
  }

  public function registerMessage($messageId, $inReplyTo, $references) {
    throw_if_null($messageId);

    $sql = 'INSERT IGNORE INTO posts ' .
           '(message_id, in_reply_to, refs) ' .
           'VALUES (' . $this->db->quote($messageId) . ', '
                      . $this->quote($inReplyTo) . ', '
                      . $this->quote($references) . ')'; 

    $count = $this->db->exec($sql);
    return $count == 1;
  }

  public function registerMessage($postId, $messageId,
                                  $inReplyTo, $references) {
    throw_if_null($postId);
    throw_if_null($messageId);

    $sql = 'INSERT IGNORE INTO posts ' .
           '(post_id, message_id, in_reply_to, refs) ' .
           'VALUES (' . $postId . ', '
                      . $this->db->quote($messageId) . ', '
                      . $this->quote($inReplyTo) . ', '
                      . $this->quote($references) . ')'; 

    $count = $this->db->exec($sql);
    return $count == 1;
  }

  public function unregisterMessage($messageId) {
    throw_if_null($messageId);

    $sql = 'DELETE FROM posts WHERE message_id = ' .
           $this->db->quote($messageId);

    $count = $this->db->exec($sql);

    if ($count != 1) {
      throw new Exception('Failed to delete message id: ' . $messageId);
    }
  }

  protected function get_exactly_one_row($sql) {
    $result = $this->db->query($sql);

    $rows = $result->fetchAll(PDO::FETCH_ASSOC);
    $result->closeCursor();
    
    switch (count($rows)) {
    case 0:
      return false;

    case 1:
      return $rows[0];

    default:
      throw new Exception("Too many rows returned: $sql");
    }
  }

  protected function quote($arg) {
    return $arg === null ? 'NULL' : $this->db->quote($arg);
  }
}

?>