fix: replace existing pastes during migration

bin/migrate

@@ -152,6 +152,7 @@ function savePaste ($force_overwrite, $dryrun, $pasteid, $paste, $dststore)
     } else if ($force_overwrite) {
         if (!$dryrun) {
             debug("Overwriting document ID " . $pasteid);
+            $dststore->delete($pasteid);
             if (!$dststore->create($pasteid, $paste)) {
                 dieerr("Unable to overwrite document ID " . $pasteid);
             }

tst/MigrateForceOverwriteTest.php

@@ -0,0 +1,86 @@
+<?php declare(strict_types=1);
+use PHPUnit\Framework\TestCase;
+use PrivateBin\Data\Filesystem;
+
+class MigrateForceOverwriteTest extends TestCase
+{
+    private $_destination;
+
+    private $_path;
+
+    private $_source;
+
+    public function setUp(): void
+    {
+        $this->_path = sys_get_temp_dir() . DIRECTORY_SEPARATOR . 'privatebin_migrate_force';
+        Helper::rmDir($this->_path);
+        mkdir($this->_path);
+        mkdir($this->_path . DIRECTORY_SEPARATOR . 'source_cfg');
+        mkdir($this->_path . DIRECTORY_SEPARATOR . 'destination_cfg');
+
+        $options                         = parse_ini_file(CONF_SAMPLE, true);
+        $options['model_options']['dir'] = $this->_path . DIRECTORY_SEPARATOR . 'source';
+        $this->_source                   = new Filesystem($options['model_options']);
+        Helper::createIniFile(
+            $this->_path . DIRECTORY_SEPARATOR . 'source_cfg' . DIRECTORY_SEPARATOR . 'conf.php',
+            $options
+        );
+
+        $options['model_options']['dir'] = $this->_path . DIRECTORY_SEPARATOR . 'destination';
+        $this->_destination              = new Filesystem($options['model_options']);
+        Helper::createIniFile(
+            $this->_path . DIRECTORY_SEPARATOR . 'destination_cfg' . DIRECTORY_SEPARATOR . 'conf.php',
+            $options
+        );
+    }
+
+    public function tearDown(): void
+    {
+        Helper::rmDir($this->_path);
+    }
+
+    public function testForceReplacesPasteAndDiscussion()
+    {
+        $sourcePaste       = Helper::getPaste();
+        $sourcePaste['ct'] = 'source paste';
+        $this->_source->create(Helper::getPasteId(), $sourcePaste);
+        $sourceComment       = Helper::getComment();
+        $sourceComment['ct'] = 'source comment';
+        $this->_source->createComment(
+            Helper::getPasteId(),
+            Helper::getPasteId(),
+            Helper::getCommentId(),
+            $sourceComment
+        );
+
+        $destinationPaste       = Helper::getPaste();
+        $destinationPaste['ct'] = 'old paste';
+        $this->_destination->create(Helper::getPasteId(), $destinationPaste);
+        $destinationComment       = Helper::getComment();
+        $destinationComment['ct'] = 'old comment';
+        $this->_destination->createComment(
+            Helper::getPasteId(),
+            Helper::getPasteId(),
+            Helper::getCommentId(),
+            $destinationComment
+        );
+
+        $command = escapeshellarg(PHP_BINARY) . ' ' .
+            escapeshellarg(realpath(PATH . 'bin' . DIRECTORY_SEPARATOR . 'migrate')) .
+            ' -f --delete-after ' .
+            escapeshellarg($this->_path . DIRECTORY_SEPARATOR . 'source_cfg') . ' ' .
+            escapeshellarg($this->_path . DIRECTORY_SEPARATOR . 'destination_cfg') .
+            ' 2>&1';
+        exec($command, $output, $exitCode);
+
+        $this->assertSame(0, $exitCode, implode(PHP_EOL, $output));
+        $this->assertFalse($this->_source->exists(Helper::getPasteId()));
+        $this->assertSame(
+            'source paste',
+            $this->_destination->read(Helper::getPasteId())['ct']
+        );
+        $comments = array_values($this->_destination->readComments(Helper::getPasteId()));
+        $this->assertCount(1, $comments);
+        $this->assertSame('source comment', $comments[0]['ct']);
+    }
+}