ConfigFile class

src/main/php/libAllure/ConfigFile.php

@@ -0,0 +1,82 @@
+<?php
+
+namespace libAllure;
+
+class ConfigFile 
+{
+    private array $keys;
+
+    public $filename = '/config.ini';
+
+    public function __construct(array $additionalKeys = null, $useDefaultKeys = true)
+    {
+        $this->keys = [];
+
+        if ($useDefaultKeys) {
+            $this->keys['DB_NAME'] = 'unknown';
+            $this->keys['DB_HOST'] = 'localhost';
+            $this->keys['DB_USER'] = 'user';
+            $this->keys['DB_PASS'] = 'password';
+            $this->keys['TIMEZONE'] = 'Europe/London';
+        }
+
+        if (is_array($additionalKeys)) {
+            $this->keys = array_merge($this->keys, $additionalKeys);
+        }
+    }    
+
+    public function tryLoad(array $possiblePaths)
+    {
+        $foundAConfig = false;
+
+        foreach ($possiblePaths as $path) {
+            if (file_exists($path . $this->filename)) {
+                $foundAConfig = true;
+                $this->load($path . $this->filename);
+            }
+        }
+
+        if (!$foundAConfig) {
+            $this->createConfigFile($possiblePaths[0]);
+        }
+    }
+
+    private function createConfigFile($path)
+    {
+        if (!is_writable($path)) {
+            throw new \Exception('Could not save a default config file as the path is not writable:  ' . $path);
+        }
+
+        $content = '';
+
+        foreach ($this->keys as $key => $val) {
+            $content .= $key . '=' . $val . "\n";
+        }
+
+        file_put_contents($path . $this->filename, $content);
+    }
+
+    private function load($fullpath)
+    {
+        $this->keys = parse_ini_file($fullpath, false);
+    }
+
+    public function getAll(): array
+    {
+        return $this->keys;
+    }
+
+    public function get($k): ?string
+    {
+        if (isset($this->keys[$k])) {
+            return $this->keys[$k];
+        } 
+
+        return null;
+    }
+
+    public function getDsn($type = 'mysql'): string
+    {
+        return $type . ':dbname=' . $this->get('DB_NAME');
+    }
+}

src/test/php/ConfigFileTest.php

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+<?php
+
+require_once 'common.php';
+
+require_once 'libAllure/ConfigFile.php';
+
+use \libAllure\ConfigFile;
+use \PHPUnit\Framework\TestCase;
+
+class ConfigFileTest extends TestCase {
+    public function setUp(): void
+    {
+        if (!file_exists('/tmp/libAllure')) {
+            mkdir('/tmp/libAllure/');
+        }
+
+        chmod('/tmp/libAllure', 0777);
+    }
+    public function testDefaultKeys() 
+    {
+        $cfg = new ConfigFile();
+
+        $this->assertEquals('localhost', $cfg->get('DB_HOST'));
+    }
+
+    public function testAdditionalKeys()
+    {
+        $cfg = new ConfigFile([
+            'blat' => 'hi',
+        ]);
+
+        $this->assertEquals('hi', $cfg->get('blat'));
+        $this->assertEquals('localhost', $cfg->get('DB_HOST'));
+    }
+
+    public function testNoAdditionalKeys()
+    {
+        $cfg = new ConfigFile(null, false);
+
+        $this->assertSame(null, $cfg->get('DB_HOST'));
+    }
+
+    public function testLoad()
+    {
+        $cfg = new ConfigFile();
+        $cfg->tryLoad([
+            '/tmp/libAllure/',
+        ]);
+
+        $this->assertSame('localhost', $cfg->get('DB_HOST'));
+    }
+}