move db-prefs to OO

1 files changed, 190 insertions, 0 deletions

diff --git a/classes/db/prefs.php b/classes/db/prefs.php
new file mode 100644
index 000000000..26fb4666b
--- /dev/null
+++ b/classes/db/prefs.php
@@ -0,0 +1,190 @@
+<?php
+class Db_Prefs {
+	private $dbh;
+	private static $instance;
+	private $cache;
+
+	function __construct() {
+		$this->dbh = Db::get();
+		$this->cache = array();
+
+		if ($_SESSION["uid"]) $this->cache();
+	}
+
+	private function __clone() {
+		//
+	}
+
+	public static function get() {
+		if (self::$instance == null)
+			self::$instance = new self();
+
+		return self::$instance;
+	}
+
+	function cache() {
+		$profile = false;
+
+		$user_id = $_SESSION["uid"];
+		@$profile = $_SESSION["profile"];
+
+		if ($profile) {
+			$profile_qpart = "profile = '$profile' AND";
+		} else {
+			$profile_qpart = "profile IS NULL AND";
+		}
+
+		if (get_schema_version() < 63) $profile_qpart = "";
+
+		$result = db_query("SELECT
+			value,ttrss_prefs_types.type_name as type_name,ttrss_prefs.pref_name AS pref_name
+			FROM
+				ttrss_user_prefs,ttrss_prefs,ttrss_prefs_types
+			WHERE
+				$profile_qpart
+				ttrss_prefs.pref_name NOT LIKE '_MOBILE%' AND
+				ttrss_prefs_types.id = type_id AND
+				owner_uid = '$user_id' AND
+				ttrss_user_prefs.pref_name = ttrss_prefs.pref_name");
+
+		while ($line = db_fetch_assoc($result)) {
+			if ($user_id == $_SESSION["uid"]) {
+				$pref_name = $line["pref_name"];
+
+				$this->cache[$pref_name]["type"] = $line["type_name"];
+				$this->cache[$pref_name]["value"] = $line["value"];
+			}
+		}
+	}
+
+	function read($pref_name, $user_id = false, $die_on_error = false) {
+
+		$pref_name = db_escape_string($pref_name);
+		$profile = false;
+
+		if (!$user_id) {
+			$user_id = $_SESSION["uid"];
+			@$profile = $_SESSION["profile"];
+		} else {
+			$user_id = sprintf("%d", $user_id);
+		}
+
+		if (isset($this->cache[$pref_name])) {
+			$tuple = $this->cache[$pref_name];
+			return $this->convert($tuple["value"], $tuple["type"]);
+		}
+
+		if ($profile) {
+			$profile_qpart = "profile = '$profile' AND";
+		} else {
+			$profile_qpart = "profile IS NULL AND";
+		}
+
+		if (get_schema_version() < 63) $profile_qpart = "";
+
+		$result = db_query("SELECT
+			value,ttrss_prefs_types.type_name as type_name
+			FROM
+				ttrss_user_prefs,ttrss_prefs,ttrss_prefs_types
+			WHERE
+				$profile_qpart
+				ttrss_user_prefs.pref_name = '$pref_name' AND
+				ttrss_prefs_types.id = type_id AND
+				owner_uid = '$user_id' AND
+				ttrss_user_prefs.pref_name = ttrss_prefs.pref_name");
+
+		if (db_num_rows($result) > 0) {
+			$value = db_fetch_result($result, 0, "value");
+			$type_name = db_fetch_result($result, 0, "type_name");
+
+			if ($user_id == $_SESSION["uid"]) {
+				$this->cache[$pref_name]["type"] = $type_name;
+				$this->cache[$pref_name]["value"] = $value;
+			}
+
+			return $this->convert($value, $type_name);
+
+		} else {
+			user_error("Fatal error, unknown preferences key: $pref_name", $die_on_error ? E_USER_ERROR : E_USER_WARNING);
+			return null;
+		}
+	}
+
+	function convert($value, $type_name) {
+		if ($type_name == "bool") {
+			return $value == "true";
+		} else if ($type_name == "integer") {
+			return (int)$value;
+		} else {
+			return $value;
+		}
+	}
+
+	function write($pref_name, $value, $user_id = false, $strip_tags = true) {
+		$pref_name = db_escape_string($pref_name);
+		$value = db_escape_string($value, $strip_tags);
+
+		if (!$user_id) {
+			$user_id = $_SESSION["uid"];
+			@$profile = $_SESSION["profile"];
+		} else {
+			$user_id = sprintf("%d", $user_id);
+			$prefs_cache = false;
+		}
+
+		if ($profile) {
+			$profile_qpart = "AND profile = '$profile'";
+		} else {
+			$profile_qpart = "AND profile IS NULL";
+		}
+
+		if (get_schema_version() < 63) $profile_qpart = "";
+
+		$type_name = "";
+		$current_value = "";
+
+		if (isset($this->cache[$pref_name])) {
+			$type_name = $this->cache[$pref_name]["type"];
+			$current_value = $this->cache[$pref_name]["value"];
+		}
+
+		if (!$type_name) {
+			$result = db_query("SELECT type_name
+				FROM ttrss_prefs,ttrss_prefs_types
+				WHERE pref_name = '$pref_name' AND type_id = ttrss_prefs_types.id");
+
+			if (db_num_rows($result) > 0)
+				$type_name = db_fetch_result($result, 0, "type_name");
+		} else if ($current_value == $value) {
+			return;
+		}
+
+		if ($type_name) {
+			if ($type_name == "bool") {
+				if ($value == "1" || $value == "true") {
+					$value = "true";
+				} else {
+					$value = "false";
+				}
+			} else if ($type_name == "integer") {
+				$value = sprintf("%d", $value);
+			}
+
+			if ($pref_name == 'USER_TIMEZONE' && $value == '') {
+				$value = 'UTC';
+			}
+
+			db_query("UPDATE ttrss_user_prefs SET
+				value = '$value' WHERE pref_name = '$pref_name'
+					$profile_qpart
+					AND owner_uid = " . $_SESSION["uid"]);
+
+			if ($user_id == $_SESSION["uid"]) {
+				$this->cache[$pref_name]["type"] = $type_name;
+				$this->cache[$pref_name]["value"] = $value;
+			}
+		}
+	}
+
+}
+?>