Use hash given url to avoid duplicate

Using hashed url we can ensure an index on them to ensure it's fast.

1 files changed, 74 insertions, 0 deletions

diff --git a/app/DoctrineMigrations/Version20190601125843.php b/app/DoctrineMigrations/Version20190601125843.php
new file mode 100644
index 00000000..341d64dc
--- /dev/null
+++ b/app/DoctrineMigrations/Version20190601125843.php
@@ -0,0 +1,74 @@
+<?php
+
+namespace Application\Migrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Wallabag\CoreBundle\Doctrine\WallabagMigration;
+
+/**
+ * Added `given_url` & `hashed_given_url` field in entry table.
+ */
+class Version20190601125843 extends WallabagMigration
+{
+    /**
+     * @param Schema $schema
+     */
+    public function up(Schema $schema)
+    {
+        $entryTable = $schema->getTable($this->getTable('entry'));
+
+        if (!$entryTable->hasColumn('given_url')) {
+            $entryTable->addColumn('given_url', 'text', [
+                'notnull' => false,
+            ]);
+        }
+
+        if (!$entryTable->hasColumn('hashed_given_url')) {
+            $entryTable->addColumn('hashed_given_url', 'text', [
+                'length' => 40,
+                'notnull' => false,
+            ]);
+        }
+
+        $entryTable->dropIndex('hashed_url_user_id');
+        $entryTable->addIndex(
+            [
+                'user_id',
+                'hashed_url',
+                'hashed_given_url',
+            ],
+            'hashed_urls_user_id',
+            [],
+            [
+                // specify length for index which is required by MySQL on text field
+                'lengths' => [
+                    // user_id
+                    null,
+                    // hashed_url
+                    40,
+                    // hashed_given_url
+                    40,
+                ],
+            ]
+        );
+    }
+
+    /**
+     * @param Schema $schema
+     */
+    public function down(Schema $schema)
+    {
+        $entryTable = $schema->getTable($this->getTable('entry'));
+
+        if ($entryTable->hasColumn('given_url')) {
+            $entryTable->dropColumn('given_url');
+        }
+
+        if ($entryTable->hasColumn('hashed_given_url')) {
+            $entryTable->dropColumn('hashed_given_url');
+        }
+
+        $entryTable->dropIndex('hashed_urls_user_id');
+        $entryTable->addIndex(['user_id', 'hashed_url'], 'hashed_url_user_id', [], ['lengths' => [null, 40]]);
+    }
+}