Various changes to Database

- Introduced "strict" binding types for use when inserting into NOT NULL columns: any null value supplied is always cast to the supplied type rather than passing through
- Fixed feed updating further
- Filled out full complement of subscription manipulation functions
- made folderPropertiesSet possibly return false

lib/Database.php

@@ -352,10 +352,10 @@ class Database {
     public function folderPropertiesSet(string $user, int $id, array $data): bool {
         if(!Data::$user->authorize($user, __FUNCTION__)) throw new User\ExceptionAuthz("notAuthorized", ["action" => __FUNCTION__, "user" => $user]);
         if(!$this->userExists($user)) throw new User\Exception("doesNotExist", ["user" => $user, "action" => __FUNCTION__]);
-        // layer the existing folder properties onto the new desired one
+        // layer the existing folder properties onto the new desired ones; this also has the effect of checking whether the folder is valid
         $data = array_merge($this->folderPropertiesGet($user, $id), $data);
         // if the desired folder name is missing or invalid, throw an exception
-        if(!array_key_exists("name", $data) || $data['name']=="") {
+        if($data['name']=="") {
             throw new Db\ExceptionInput("missing", ["action" => __FUNCTION__, "field" => "name"]);
         } else if(!strlen(trim($data['name']))) {
             throw new Db\ExceptionInput("whitespace", ["action" => __FUNCTION__, "field" => "name"]);
@@ -389,8 +389,7 @@ class Database {
             'parent' => "int",
         ];
         list($setClause, $setTypes, $setValues) = $this->generateSet($data, $valid);
-        $this->db->prepare("UPDATE arsse_folders set $setClause where owner is ? and id is ?", $setTypes, "str", "int")->run($setValues, $user, $id);
-        return true;
+        return (bool) $this->db->prepare("UPDATE arsse_folders set $setClause where owner is ? and id is ?", $setTypes, "str", "int")->run($setValues, $user, $id)->changes();
     }
 
     public function subscriptionAdd(string $user, string $url, string $fetchUser = "", string $fetchPassword = ""): int {
@@ -414,21 +413,64 @@ class Database {
         return $this->db->prepare('INSERT INTO arsse_subscriptions(owner,feed) values(?,?)', 'str', 'int')->run($user, $feedID)->lastId();
     }
 
-    public function subscriptionRemove(string $user, int $id): bool {
-        if(!Data::$user->authorize($user, __FUNCTION__)) throw new User\ExceptionAuthz("notAuthorized", ["action" => __FUNCTION__, "user" => $user]);
-        return (bool) $this->db->prepare("DELETE from arsse_subscriptions where owner is ? and id is ?", "str", "int")->run($user, $id)->changes();
-    }
-
-    public function subscriptionList(string $user, int $folder = null): Db\Result {
+    public function subscriptionList(string $user, int $folder = null, int $id = null): Db\Result {
         if(!Data::$user->authorize($user, __FUNCTION__)) throw new User\ExceptionAuthz("notAuthorized", ["action" => __FUNCTION__, "user" => $user]);
         if(!$this->userExists($user)) throw new User\Exception("doesNotExist", ["user" => $user, "action" => __FUNCTION__]);
         // check to make sure the folder exists, if one is specified
+        $query = 
+            "SELECT 
+                arsse_subscriptions.id,
+                url,favicon,source,folder,added,pinned,err_count,err_msg,order_type,
+                CASE WHEN arsse_subscriptions.title THEN arsse_subscriptions.title ELSE arsse_feeds.title END as title,
+                (SELECT count(*) from arsse_articles where feed is arsse_subscriptions.feed) - (SELECT count(*) from (SELECT article,feed from arsse_subscription_articles join arsse_articles on article = arsse_articles.id where owner is ? and feed is arsse_feeds.id and read is 1)) as unread
+             from arsse_subscriptions join arsse_feeds on feed = arsse_feeds.id where owner is ?";
         if(!is_null($folder)) {
             if(!$this->db->prepare("SELECT count(*) from arsse_folders where owner is ? and id is ?", "str", "int")->run($user, $folder)->getValue()) {
                 throw new Db\ExceptionInput("idMissing", ["action" => __FUNCTION__, "field" => "folder", 'id' => $folder]);
             }
+            return $this->db->prepare(
+                "WITH RECURSIVE folders(folder) as (SELECT ? union select id from arsse_folders join folders on parent is folder) $query and folder in (select folder from folders)", 
+                "int", "str", "str"
+            )->run($folder, $user, $user);
+        } else if(!is_null($id)) {
+            // this condition facilitates the implementation of subscriptionPropertiesGet, which would otherwise have to duplicate the complex query
+            return $this->db->prepare("$query and arsse_subscriptions.id is ?", "str", "str", "int")->run($user, $user, $id);
+        } else {
+            return $this->db->prepare($query, "str", "str")->run($user, $user);
+        }
+    }
+
+    public function subscriptionRemove(string $user, int $id): bool {
+        if(!Data::$user->authorize($user, __FUNCTION__)) throw new User\ExceptionAuthz("notAuthorized", ["action" => __FUNCTION__, "user" => $user]);
+        return (bool) $this->db->prepare("DELETE from arsse_subscriptions where owner is ? and id is ?", "str", "int")->run($user, $id)->changes();
+    }
+
+    public function subscriptionPropertiesGet(string $user, int $id): array {
+        if(!Data::$user->authorize($user, __FUNCTION__)) throw new User\ExceptionAuthz("notAuthorized", ["action" => __FUNCTION__, "user" => $user]);
+        // disable authorization checks for the list call
+        Data::$user->authorizationEnabled(false);
+        $sub = $this->subscriptionList($user, null, $id)->getRow();
+        Data::$user->authorizationEnabled(true);
+        if(!$sub) throw new Db\ExceptionInput("idMissing", ["action" => __FUNCTION__, "field" => "feed", 'id' => $id]);
+        return $sub;
+    }
+
+    public function subscriptionPropertiesSet(string $user, int $id, array $data): bool {
+        if(!Data::$user->authorize($user, __FUNCTION__)) throw new User\ExceptionAuthz("notAuthorized", ["action" => __FUNCTION__, "user" => $user]);
+        if(!$this->userExists($user)) throw new User\Exception("doesNotExist", ["user" => $user, "action" => __FUNCTION__]);
+        $this->db->begin();
+        if(!$this->db->prepare("SELECT count(*) from arsse_subscriptions where owner is ? and id is ?", "str", "int")->run($user, $id)->getValue()) {
+            // if the ID doesn't exist or doesn't belong to the user, throw an exception
+            throw new Db\ExceptionInput("idMissing", ["action" => __FUNCTION__, "field" => "feed", 'id' => $id]);
         }
-        return $this->db->prepare("SELECT arsse_subscriptions.id, arsse_feeds.url, arsse_feeds.title from arsse_subscriptions join arsse_feeds on feed = arsse_feeds.id where arsse_subscriptions.owner is ?", "str")->run($user);
+        $valid = [
+            'title'      => "str",
+            'folder'     => "int",
+            'order_type' => "strict int",
+            'pinned'     => "strict bool",
+        ];
+        list($setClause, $setTypes, $setValues) = $this->generateSet($data, $valid);
+        return (bool) $this->db->prepare("UPDATE arsse_subscriptions set $setClause where owner is ? and id is ?", $setTypes, "str", "int")->run($setValues, $user, $id)->changes();
     }
 
     public function feedUpdate(int $feedID, bool $throwError = false): bool {
@@ -496,7 +538,7 @@ class Database {
                     $feedID
                 )->lastId();
                 foreach($article->getTag('category') as $c) {
-                    $qInsertCategories->run($articleID, $c);
+                    $qInsertCategory->run($articleID, $c);
                 }
                 $qInsertEdition->run($articleID);
             }
@@ -516,7 +558,7 @@ class Database {
                 );
                 $qDeleteCategories->run($articleID);
                 foreach($article->getTag('category') as $c) {
-                    $qInsertCategories->run($articleID, $c);
+                    $qInsertCategory->run($articleID, $c);
                 }
                 $qInsertEdition->run($articleID);
                 $qClearReadMarks->run($articleID);

lib/Db/AbstractStatement.php

@@ -3,6 +3,8 @@ declare(strict_types=1);
 namespace JKingWeb\Arsse\Db;
 
 abstract class AbstractStatement implements Statement {
+    protected $types = [];
+    protected $isNullable = [];
 
     abstract function runArray(array $values): Result;
     abstract static function dateFormat(int $part = self::TS_BOTH): string;
@@ -23,6 +25,13 @@ abstract class AbstractStatement implements Statement {
                 $this->rebindArray($binding, true);
             } else {
                 $binding = trim(strtolower($binding));
+                if(strpos($binding, "strict ")===0) {
+                    // "strict" types' values may never be null; null values will later be cast to the type specified
+                    $this->isNullable[] = false;
+                    $binding = substr($binding, 7);
+                } else {
+                    $this->isNullable[] = true;
+                }
                 if(!array_key_exists($binding, self::TYPES)) throw new Exception("paramTypeInvalid", $binding);
                 $this->types[] = self::TYPES[$binding];
             }
@@ -30,13 +39,16 @@ abstract class AbstractStatement implements Statement {
         return true;
     }
 
-    protected function cast($v, string $t) {
+    protected function cast($v, string $t, bool $nullable) {
         switch($t) {
             case "date":
+                if(is_null($v) && !$nullable) $v = 0;
                 return $this->formatDate($v, self::TS_DATE);
             case "time":
+                if(is_null($v) && !$nullable) $v = 0;
                 return $this->formatDate($v, self::TS_TIME);
             case "datetime":
+                if(is_null($v) && !$nullable) $v = 0;
                 return $this->formatDate($v, self::TS_BOTH);
             case "null":
             case "integer":

lib/Db/SQLite3/Statement.php

@@ -25,7 +25,6 @@ class Statement extends \JKingWeb\Arsse\Db\AbstractStatement {
 
     protected $db;
     protected $st;
-    protected $types;
 
     public function __construct(\SQLite3 $db, \SQLite3Stmt $st, array $bindings = []) {
         $this->db = $db;
@@ -66,23 +65,24 @@ class Statement extends \JKingWeb\Arsse\Db\AbstractStatement {
             if(is_array($value)) {
                 // recursively flatten any arrays, which may be provided for SET or IN() clauses
                 $a += $this->bindValues($value, $a);
-            } else {
-                // find the right SQLite binding type for the value/specified type
-                if($value===null) {
-                    $type = \SQLITE3_NULL;
-                } else if(array_key_exists($a,$this->types)) {
-                    if(!array_key_exists($this->types[$a], self::BINDINGS)) throw new Exception("paramTypeUnknown", $this->types[$a]);
+            } else if(array_key_exists($a,$this->types)) {
+                // if the parameter type is something other than the known values, this is an error
+                if(!array_key_exists($this->types[$a], self::BINDINGS)) throw new Exception("paramTypeUnknown", $this->types[$a]);
+                // if the parameter type is null or the value is null (and the type is nullable), just bind null
+                if($this->types[$a]=="null" || ($this->isNullable[$a] && is_null($value))) {
+                    $this->st->bindValue($a+1, null, \SQLITE3_NULL);
+                } else  {
+                    // otherwise cast the value to the right type and bind the result
                     $type = self::BINDINGS[$this->types[$a]];
-                } else {
-                    throw new Exception("paramTypeMissing", $a+1);
+                    $value = $this->cast($value, $this->types[$a], $this->isNullable[$a]);
+                    // re-adjust for null casts
+                    if($value===null) $type = \SQLITE3_NULL;
+                    // perform binding
+                    $this->st->bindValue($a+1, $value, $type);
                 }
-                // cast value if necessary
-                $value = $this->cast($value, $this->types[$a]);
-                // re-adjust for null casts
-                if($value===null) $type = \SQLITE3_NULL;
-                // perform binding
-                $this->st->bindValue($a+1, $value, $type);
                 $a++;
+            } else {
+                throw new Exception("paramTypeMissing", $a+1);
             }
         }
         return $a - $offset;

tests/test.php

@@ -1,7 +1,7 @@
 <?php
 namespace JKingWeb\Arsse;
 const INSTALL = true;
-require_once "../bootstrap.php";
+require_once __DIR__."/../bootstrap.php";
 
 
 $user = "john.doe@example.com";
@@ -21,4 +21,10 @@ Data::$user->rightsSet($user, User\Driver::RIGHTS_GLOBAL_ADMIN);
 Data::$user->authorizationEnabled(true);
 Data::$db->folderAdd($user, ['name' => 'ook']);
 Data::$db->subscriptionAdd($user, "https://jkingweb.ca/test.atom");
+Data::$db->subscriptionPropertiesSet($user, 1, [
+    'title'      => "OOOOOOOOK!",
+    'folder'     => null,
+    'order_type' => null,
+    'pinned'     => null,
+]);
 var_export(Data::$db->subscriptionList($user)->getAll());