classes/db/prefs.php

   1 <?php
   2 class Db_Prefs {
   3         private $dbh;
   4         private static $instance;
   5         private $cache;
   6
   7         function __construct() {
   8                 $this->dbh = Db::get();
   9                 $this->cache = array();
  10
  11                 if ($_SESSION["uid"]) $this->cache();
  12         }
  13
  14         private function __clone() {
  15                 //
  16         }
  17
  18         public static function get() {
  19                 if (self::$instance == null)
  20                         self::$instance = new self();
  21
  22                 return self::$instance;
  23         }
  24
  25         function cache() {
  26                 $profile = false;
  27
  28                 $user_id = $_SESSION["uid"];
  29                 @$profile = $_SESSION["profile"];
  30
  31                 if ($profile) {
  32                         $profile_qpart = "profile = '$profile' AND";
  33                 } else {
  34                         $profile_qpart = "profile IS NULL AND";
  35                 }
  36
  37                 if (get_schema_version() < 63) $profile_qpart = "";
  38
  39                 $result = db_query("SELECT
  40                         value,ttrss_prefs_types.type_name as type_name,ttrss_prefs.pref_name AS pref_name
  41                         FROM
  42                                 ttrss_user_prefs,ttrss_prefs,ttrss_prefs_types
  43                         WHERE
  44                                 $profile_qpart
  45                                 ttrss_prefs.pref_name NOT LIKE '_MOBILE%' AND
  46                                 ttrss_prefs_types.id = type_id AND
  47                                 owner_uid = '$user_id' AND
  48                                 ttrss_user_prefs.pref_name = ttrss_prefs.pref_name");
  49
  50                 while ($line = db_fetch_assoc($result)) {
  51                         if ($user_id == $_SESSION["uid"]) {
  52                                 $pref_name = $line["pref_name"];
  53
  54                                 $this->cache[$pref_name]["type"] = $line["type_name"];
  55                                 $this->cache[$pref_name]["value"] = $line["value"];
  56                         }
  57                 }
  58         }
  59
  60         function read($pref_name, $user_id = false, $die_on_error = false) {
  61
  62                 $pref_name = db_escape_string($pref_name);
  63                 $profile = false;
  64
  65                 if (!$user_id) {
  66                         $user_id = $_SESSION["uid"];
  67                         @$profile = $_SESSION["profile"];
  68                 } else {
  69                         $user_id = sprintf("%d", $user_id);
  70                 }
  71
  72                 if (isset($this->cache[$pref_name])) {
  73                         $tuple = $this->cache[$pref_name];
  74                         return $this->convert($tuple["value"], $tuple["type"]);
  75                 }
  76
  77                 if ($profile) {
  78                         $profile_qpart = "profile = '$profile' AND";
  79                 } else {
  80                         $profile_qpart = "profile IS NULL AND";
  81                 }
  82
  83                 if (get_schema_version() < 63) $profile_qpart = "";
  84
  85                 $result = db_query("SELECT
  86                         value,ttrss_prefs_types.type_name as type_name
  87                         FROM
  88                                 ttrss_user_prefs,ttrss_prefs,ttrss_prefs_types
  89                         WHERE
  90                                 $profile_qpart
  91                                 ttrss_user_prefs.pref_name = '$pref_name' AND
  92                                 ttrss_prefs_types.id = type_id AND
  93                                 owner_uid = '$user_id' AND
  94                                 ttrss_user_prefs.pref_name = ttrss_prefs.pref_name");
  95
  96                 if (db_num_rows($result) > 0) {
  97                         $value = db_fetch_result($result, 0, "value");
  98                         $type_name = db_fetch_result($result, 0, "type_name");
  99
 100                         if ($user_id == $_SESSION["uid"]) {
 101                                 $this->cache[$pref_name]["type"] = $type_name;
 102                                 $this->cache[$pref_name]["value"] = $value;
 103                         }
 104
 105                         return $this->convert($value, $type_name);
 106
 107                 } else {
 108                         user_error("Fatal error, unknown preferences key: $pref_name", $die_on_error ? E_USER_ERROR : E_USER_WARNING);
 109                         return null;
 110                 }
 111         }
 112
 113         function convert($value, $type_name) {
 114                 if ($type_name == "bool") {
 115                         return $value == "true";
 116                 } else if ($type_name == "integer") {
 117                         return (int)$value;
 118                 } else {
 119                         return $value;
 120                 }
 121         }
 122
 123         function write($pref_name, $value, $user_id = false, $strip_tags = true) {
 124                 $pref_name = db_escape_string($pref_name);
 125                 $value = db_escape_string($value, $strip_tags);
 126
 127                 if (!$user_id) {
 128                         $user_id = $_SESSION["uid"];
 129                         @$profile = $_SESSION["profile"];
 130                 } else {
 131                         $user_id = sprintf("%d", $user_id);
 132                         $prefs_cache = false;
 133                 }
 134
 135                 if ($profile) {
 136                         $profile_qpart = "AND profile = '$profile'";
 137                 } else {
 138                         $profile_qpart = "AND profile IS NULL";
 139                 }
 140
 141                 if (get_schema_version() < 63) $profile_qpart = "";
 142
 143                 $type_name = "";
 144                 $current_value = "";
 145
 146                 if (isset($this->cache[$pref_name])) {
 147                         $type_name = $this->cache[$pref_name]["type"];
 148                         $current_value = $this->cache[$pref_name]["value"];
 149                 }
 150
 151                 if (!$type_name) {
 152                         $result = db_query("SELECT type_name
 153                                 FROM ttrss_prefs,ttrss_prefs_types
 154                                 WHERE pref_name = '$pref_name' AND type_id = ttrss_prefs_types.id");
 155
 156                         if (db_num_rows($result) > 0)
 157                                 $type_name = db_fetch_result($result, 0, "type_name");
 158                 } else if ($current_value == $value) {
 159                         return;
 160                 }
 161
 162                 if ($type_name) {
 163                         if ($type_name == "bool") {
 164                                 if ($value == "1" || $value == "true") {
 165                                         $value = "true";
 166                                 } else {
 167                                         $value = "false";
 168                                 }
 169                         } else if ($type_name == "integer") {
 170                                 $value = sprintf("%d", $value);
 171                         }
 172
 173                         if ($pref_name == 'USER_TIMEZONE' && $value == '') {
 174                                 $value = 'UTC';
 175                         }
 176
 177                         db_query("UPDATE ttrss_user_prefs SET
 178                                 value = '$value' WHERE pref_name = '$pref_name'
 179                                         $profile_qpart
 180                                         AND owner_uid = " . $_SESSION["uid"]);
 181
 182                         if ($user_id == $_SESSION["uid"]) {
 183                                 $this->cache[$pref_name]["type"] = $type_name;
 184                                 $this->cache[$pref_name]["value"] = $value;
 185                         }
 186                 }
 187         }
 188
 189 }
 190 ?>