Fetch old version and env vars

app/tasks/install.php

@@ -2,6 +2,7 @@
 
 global $cli;
 
+use Appwrite\Docker\Compose;
 use Utopia\CLI\Console;
 use Utopia\Config\Config;
 use Utopia\View;
@@ -12,9 +13,9 @@ $cli
     ->action(function () {
         /**
          * 1. Start - DONE
-         * 2. Check for older setup and get older version
+         * 2. Check for older setup and get older version - DONE
          *  2.1 If older version is equal or bigger(?) than current version, **stop setup**
-         *  2.2. Get ENV vars
+         *  2.2. Get ENV vars - DONE
          *   2.2.1 Fetch from older docker-compose.yml file
          *   2.2.2 Fetch from older .env file (manually parse)
          *  2.3 Use old ENV vars as default values
@@ -22,14 +23,46 @@ $cli
          *      Otherwise, just use default vars. - DONE
          * 3. Ask user to backup important volumes, env vars, and SQL tables
          *      In th future we can try and automate this for smaller/medium size setups 
-         * 4. Drop new docker-compose.yml setup (located inside the container, no network dependencies with appwrite.io)
+         * 4. Drop new docker-compose.yml setup (located inside the container, no network dependencies with appwrite.io) - DONE
          * 5. Run docker-compose up -d - DONE
          * 6. Run data migration
          */
         $vars = Config::getParam('variables');
+        $path = '/usr/src/code/appwrite';
+        $version = null;
         
         Console::success('Starting Appwrite installation...');
 
+        // Create directory with write permissions
+        if (null !== $path && !\file_exists(\dirname($path))) {
+            if (!@\mkdir(\dirname($path), 0755, true)) {
+                Console::error('Can\'t create directory '.\dirname($path));
+                exit(1);
+            }
+        }
+
+        $data = @file_get_contents($path.'/docker-compose.yml');
+
+        if($data !== false) {
+            $compose = new Compose($data);
+            $service = $compose->getService('appwrite');
+            $version = ($service) ? $service->getImageVersion() : $version;
+
+            if($version) {
+                foreach($compose->getServices() as $service) { // Fetch all env vars from previous compose file
+                    if(!$service) {
+                        continue;
+                    }
+
+                    $env = $service->getEnvironment()->list();
+
+                    var_dump($env);
+                }
+
+                 // Fetch all env vars from previous .env file
+            }
+        }
+
         $httpPort = Console::confirm('Choose your server HTTP port: (default: 80)');
         $httpPort = ($httpPort) ? $httpPort : 80;
 
@@ -64,8 +97,6 @@ $cli
             ->setParam('vars', $input)
         ;
 
-        $path = '/usr/src/code';
-
         if(!file_put_contents($path.'/docker-compose.yml', $templateForCompose->render(false))) {
             Console::error('Failed to save Docker Compose file');
             exit(1);

src/Appwrite/Docker/Compose/Service.php

@@ -17,11 +17,11 @@ class Service
     public function __construct(array $service)
     {
         $this->service = $service;
-        $this->service['environment'] = isset($this->service['environment']) ? new Env(implode("\n", $this->service['environment'])) : null;
+        $this->service['environment'] = isset($this->service['environment']) ? new Env(implode("\n", $this->service['environment'])) : new Env('');
     }
 
     /**
-     * @return array
+     * @return string
      */
     public function getContainerName(): string
     {
@@ -29,10 +29,27 @@ class Service
     }
 
     /**
-     * @return array
+     * @return string
      */
     public function getImage(): string
     {
         return (isset($this->service['image'])) ? $this->service['image'] : '';
     }
+
+    /**
+     * @return string
+     */
+    public function getImageVersion(): string
+    {
+        $image = $this->getImage();
+        return substr($image, strpos($image, ':')+1);
+    }
+
+    /**
+     * @return string
+     */
+    public function getEnvironment(): Env
+    {
+        return $this->service['environment'];
+    }
 }

src/Appwrite/Docker/Env.php

@@ -53,6 +53,16 @@ class Env
         return (isset($this->vars[$key])) ? $this->vars[$key] : '';
     }
 
+    /**
+     * Get All Vars
+     * 
+     * @return array
+     */
+    public function list(): array
+    {
+        return $this->vars;
+    }
+
     /**
      * @return string
      */

tests/unit/Docker/ComposeTest.php

@@ -39,6 +39,8 @@ class ComposeTest extends TestCase
         $this->assertCount(17, $this->object->getServices());
         $this->assertEquals('appwrite-telegraf', $this->object->getService('telegraf')->getContainerName());
         $this->assertEquals('appwrite', $this->object->getService('appwrite')->getContainerName());
+        $this->assertEquals('', $this->object->getService('appwrite')->getImageVersion());
+        $this->assertEquals('2.2', $this->object->getService('traefik')->getImageVersion());
     }
 
     public function testNetworks()