<?php
namespace Shaarli\Config;

/**
 * Unit tests for Class ConfigManagerTest
 *
 * Note: it only test the manager with ConfigJson,
 *  ConfigPhp is only a workaround to handle the transition to JSON type.
 */
class ConfigManagerTest extends \Shaarli\TestCase
{
    /**
     * @var ConfigManager
     */
    protected $conf;

    protected function setUp(): void
    {
        $this->conf = new ConfigManager('tests/utils/config/configJson');
    }

    /**
     * Simple config test:
     *   1. Set settings.
     *   2. Check settings value.
     */
    public function testSetGet()
    {
        $this->conf->set('paramInt', 42);
        $this->conf->set('paramString', 'value1');
        $this->conf->set('paramBool', false);
        $this->conf->set('paramArray', array('foo' => 'bar'));
        $this->conf->set('paramNull', null);

        $this->assertEquals(42, $this->conf->get('paramInt'));
        $this->assertEquals('value1', $this->conf->get('paramString'));
        $this->assertFalse($this->conf->get('paramBool'));
        $this->assertEquals(array('foo' => 'bar'), $this->conf->get('paramArray'));
        $this->assertEquals(null, $this->conf->get('paramNull'));
    }

    /**
     * Set/write/get config test:
     *   1. Set settings.
     *   2. Write it to the config file.
     *   3. Read the file.
     *   4. Check settings value.
     */
    public function testSetWriteGet()
    {
        $this->conf->set('paramInt', 42);
        $this->conf->set('paramString', 'value1');
        $this->conf->set('paramBool', false);
        $this->conf->set('paramArray', array('foo' => 'bar'));
        $this->conf->set('paramNull', null);

        $this->conf->setConfigFile('tests/utils/config/configTmp');
        $this->conf->write(true);
        $this->conf->reload();
        unlink($this->conf->getConfigFileExt());

        $this->assertEquals(42, $this->conf->get('paramInt'));
        $this->assertEquals('value1', $this->conf->get('paramString'));
        $this->assertFalse($this->conf->get('paramBool'));
        $this->assertEquals(array('foo' => 'bar'), $this->conf->get('paramArray'));
        $this->assertEquals(null, $this->conf->get('paramNull'));
    }

    /**
     * Test set/write/get with nested keys.
     */
    public function testSetWriteGetNested()
    {
        $this->conf->set('foo.bar.key.stuff', 'testSetWriteGetNested');

        $this->conf->setConfigFile('tests/utils/config/configTmp');
        $this->conf->write(true);
        $this->conf->reload();
        unlink($this->conf->getConfigFileExt());

        $this->assertEquals('testSetWriteGetNested', $this->conf->get('foo.bar.key.stuff'));
    }

    public function testSetDeleteNested()
    {
        $this->conf->set('foo.bar.key.stuff', 'testSetDeleteNested');
        $this->assertTrue($this->conf->exists('foo.bar'));
        $this->assertTrue($this->conf->exists('foo.bar.key.stuff'));
        $this->assertEquals('testSetDeleteNested', $this->conf->get('foo.bar.key.stuff'));

        $this->conf->remove('foo.bar');
        $this->assertFalse($this->conf->exists('foo.bar.key.stuff'));
        $this->assertFalse($this->conf->exists('foo.bar'));
    }

    /**
     * Set with an empty key.
     */
    public function testSetEmptyKey()
    {
        $this->expectException(\Exception::class);
        $this->expectExceptionMessageRegExp('#^Invalid setting key parameter. String expected, got.*#');

        $this->conf->set('', 'stuff');
    }

    /**
     * Set with an array key.
     */
    public function testSetArrayKey()
    {
        $this->expectException(\Exception::class);
        $this->expectExceptionMessageRegExp('#^Invalid setting key parameter. String expected, got.*#');

        $this->conf->set(array('foo' => 'bar'), 'stuff');
    }

    /**
     * Remove with an empty key.
     */
    public function testRmoveEmptyKey()
    {
        $this->expectException(\Exception::class);
        $this->expectExceptionMessageRegExp('#^Invalid setting key parameter. String expected, got.*#');

        $this->conf->remove('');
    }

    /**
     * Try to write the config without mandatory parameter (e.g. 'login').
     */
    public function testWriteMissingParameter()
    {
        $this->expectException(\Shaarli\Config\Exception\MissingFieldConfigException::class);

        $this->conf->setConfigFile('tests/utils/config/configTmp');
        $this->assertFalse(file_exists($this->conf->getConfigFileExt()));
        $this->conf->reload();

        $this->conf->write(true);
    }

    /**
     * Try to get non existent config keys.
     */
    public function testGetNonExistent()
    {
        $this->assertEquals('', $this->conf->get('nope.test'));
        $this->assertEquals('default', $this->conf->get('nope.test', 'default'));
    }

    /**
     * Test the 'exists' method with existent values.
     */
    public function testExistsOk()
    {
        $this->assertTrue($this->conf->exists('credentials.login'));
        $this->assertTrue($this->conf->exists('config.foo'));
    }

    /**
     * Test the 'exists' method with non existent or invalid values.
     */
    public function testExistsKo()
    {
        $this->assertFalse($this->conf->exists('nope'));
        $this->assertFalse($this->conf->exists('nope.nope'));
        $this->assertFalse($this->conf->exists(''));
        $this->assertFalse($this->conf->exists(false));
    }

    /**
     * Reset the ConfigManager instance.
     */
    public function testReset()
    {
        $confIO = $this->conf->getConfigIO();
        $this->conf->reset();
        $this->assertFalse($confIO === $this->conf->getConfigIO());
    }

    /**
     * Reload the config from file.
     */
    public function testReload()
    {
        $this->conf->setConfigFile('tests/utils/config/configTmp');
        $newConf = ConfigJson::getPhpHeaders() . '{ "key": "value" }';
        file_put_contents($this->conf->getConfigFileExt(), $newConf);
        $this->conf->reload();
        unlink($this->conf->getConfigFileExt());
        // Previous conf no longer exists, and new values have been loaded.
        $this->assertFalse($this->conf->exists('credentials.login'));
        $this->assertEquals('value', $this->conf->get('key'));
    }
}