Add avatar migrate command

app/Console/Commands/AvatarDefaultMigration.php

@@ -0,0 +1,88 @@
+<?php
+
+namespace App\Console\Commands;
+
+use Illuminate\Console\Command;
+use App\Avatar;
+use Cache, DB;
+use Illuminate\Support\Str;
+
+class AvatarDefaultMigration extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'fix:avatars';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Replace old svg identicon avatars with default png avatar';
+
+    /**
+     * Create a new command instance.
+     *
+     * @return void
+     */
+    public function __construct()
+    {
+        parent::__construct();
+    }
+
+    /**
+     * Execute the console command.
+     *
+     * @return mixed
+     */
+    public function handle()
+    {
+        $this->info('Running avatar migration...');
+        $count = Avatar::whereChangeCount(0)->count();
+
+        if($count == 0) {
+            $this->info('Found no avatars needing to be migrated!');
+            exit;
+        }
+
+        $bar = $this->output->createProgressBar($count);
+        $this->info("Found {$count} avatars that may need to be migrated");
+
+        Avatar::whereChangeCount(0)->chunk(50, function($avatars) use ($bar) {
+            foreach($avatars as $avatar) {
+                if($avatar->media_path == 'public/avatars/default.png' || $avatar->thumb_path == 'public/avatars/default.png') {
+                    continue;
+                }
+
+                if(Str::endsWith($avatar->media_path, '/avatar.svg') == false) {
+                    // do not modify non-default avatars
+                    continue;
+                }
+                
+                DB::transaction(function() use ($avatar, $bar) {
+
+                    if(is_file(storage_path('app/' . $avatar->media_path))) {
+                        @unlink(storage_path('app/' . $avatar->media_path));
+                    }
+
+                    if(is_file(storage_path('app/' . $avatar->thumb_path))) {
+                        @unlink(storage_path('app/' . $avatar->thumb_path));
+                    }
+
+                    $avatar->media_path = 'public/avatars/default.png';
+                    $avatar->thumb_path = 'public/avatars/default.png';
+                    $avatar->change_count = $avatar->change_count + 1;
+                    $avatar->save();
+
+                    Cache::forget('avatar:' . $avatar->profile_id);
+                    $bar->advance();
+                });
+            }
+        });
+
+        $bar->finish();
+    }
+}