From 708c2247a97e5d31c19558f72e76225067aba2e2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Bar=C3=A1=C5=A1ek?= <janbarasek@gmail.com>
Date: Wed, 9 Oct 2019 16:24:49 +0200
Subject: [PATCH] Init

---
 README.md                  |  69 ++++++++
 common.neon                |   9 ++
 composer.json              |  22 +++
 src/Entity/ApiData.php     |  90 +++++++++++
 src/GitLabApi.php          | 311 +++++++++++++++++++++++++++++++++++++
 src/GitLabApiException.php | 101 ++++++++++++
 src/GitLabApiPanel.php     |  65 ++++++++
 src/Helper.php             |  76 +++++++++
 8 files changed, 743 insertions(+)
 create mode 100644 README.md
 create mode 100644 common.neon
 create mode 100644 composer.json
 create mode 100644 src/Entity/ApiData.php
 create mode 100644 src/GitLabApi.php
 create mode 100644 src/GitLabApiException.php
 create mode 100644 src/GitLabApiPanel.php
 create mode 100644 src/Helper.php

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..1cb5839
--- /dev/null
+++ b/README.md
@@ -0,0 +1,69 @@
+GitLab API
+==========
+
+Balík slouží jako transportní vrstva mezi konkrétní aplikací a GitLabem.
+
+Pomocí tohoto balíku můžete jednoduchým způsobem pokládat dotazy do GitLabu, detekovat chybové hlášení v Tracy baru a sledovat vytížení požadavků.
+
+Požadavky typu `GET` se automaticky cachují na `12 hodin`, pokud není řečeno jinak.
+
+Požadavky typu `POST`, `PUT`, `DELETE` a další změnové akce se necachují vůbec a vždy přenášíme veškerá data znovu.
+
+Instalace
+---------
+
+Použijte příkaz Composeru:
+
+```shell
+composer require baraja-core/gitlab-api
+```
+
+Dále je potřeba nastavit konfiguraci služby pro Nette v NEON souboru.
+
+Výchozí minimální konfigurace:
+
+```yaml
+services:
+	gitLabAPI:
+	    factory: Baraja\GitLabApi\GitLabApi(%gitLab.token%)
+
+parameters:
+	gitLab:
+		token: 123-abcDEFghiJKL-789
+
+tracy:
+	bar:
+		- Baraja\GitLabApi\GitLabApiPanel
+```
+
+API token musíte vždy změnit pro Váš uživatelský účet!
+
+Konfigurace
+-----------
+
+Do sekce `parameters` je potřeba vložit defaultní API token pro spojení s GitLabem:
+
+Příklad:
+
+```neon
+parameters:
+	gitLab:
+		token: 123-abcDEFghiJKL-789
+```
+
+Volitelně lze nastavit použití Nette Cache:
+
+```yaml
+services:
+	gitLabAPI:
+	    factory: Baraja\GitLabApi\GitLabApi(%gitLab.token%)
+        setup:
+            - setCache(@cache.storage)
+```
+
+Propojení s vlastní GitLab instalací
+------------------------------------
+
+V některých případech je potřeba propojit API na vnitřní firemní síť, kde je GitLab hostován. K tomu slouží metoda `setBaseUrl()` s cestou k doméně.
+
+Předaným parametrem může být například řetězec `'https://gitlab.com/api/v4/'`.
\ No newline at end of file
diff --git a/common.neon b/common.neon
new file mode 100644
index 0000000..b456972
--- /dev/null
+++ b/common.neon
@@ -0,0 +1,9 @@
+services:
+	gitLabAPI:
+		factory: Baraja\GitLabApi\GitLabApi(%gitLab.token%)
+		setup:
+			- setCache(@cache.storage)
+
+tracy:
+	bar:
+		- Baraja\GitLabApi\GitLabApiPanel
\ No newline at end of file
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..23b188d
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,22 @@
+{
+	"name": "baraja-core/gitlab-api",
+	"description": "Simple and robust GitLab API wrapper with Tracy debug mode.",
+	"homepage": "https://github.com/baraja-core/gitlab-api",
+	"authors": [
+		{
+			"name": "Jan Barášek",
+			"homepage": "https://baraja.cz"
+		}
+	],
+	"require": {
+		"php": ">=7.1.0",
+		"ext-curl": "*",
+		"nette/caching": "^3.0"
+	},
+	"autoload": {
+		"classmap": [
+			"src/"
+		]
+	},
+	"minimum-stability": "stable"
+}
\ No newline at end of file
diff --git a/src/Entity/ApiData.php b/src/Entity/ApiData.php
new file mode 100644
index 0000000..1adc3cb
--- /dev/null
+++ b/src/Entity/ApiData.php
@@ -0,0 +1,90 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Baraja\GitLabApi\Entity;
+
+
+use Baraja\GitLabApi\GitLabApiException;
+
+class ApiData extends \stdClass implements \ArrayAccess, \Countable, \IteratorAggregate
+{
+
+	/**
+	 * @param mixed[] $arr
+	 * @param bool $recursive
+	 * @return ApiData
+	 */
+	public static function from(array $arr, bool $recursive = true): self
+	{
+		$obj = new self;
+
+		foreach ($arr as $key => $value) {
+			if ($recursive && is_array($value)) {
+				$obj->$key = static::from($value, true);
+			} else {
+				$obj->$key = $value;
+			}
+		}
+
+		return $obj;
+	}
+
+	/**
+	 * Returns an iterator over all items.
+	 */
+	public function getIterator(): \RecursiveArrayIterator
+	{
+		return new \RecursiveArrayIterator((array) $this);
+	}
+
+	/**
+	 * Returns items count.
+	 */
+	public function count(): int
+	{
+		return count((array) $this);
+	}
+
+	/**
+	 * Replaces or appends a item.
+	 *
+	 * @param mixed $key
+	 * @param mixed $value
+	 * @throws GitLabApiException
+	 */
+	public function offsetSet($key, $value): void
+	{
+		if (!is_scalar($key)) { // prevents null
+			throw new GitLabApiException('Key must be either a string or an integer, "' . gettype($key) . '" given.');
+		}
+		$this->$key = $value;
+	}
+
+	/**
+	 * Returns a item.
+	 *
+	 * @return mixed
+	 */
+	public function offsetGet($key)
+	{
+		return $this->$key;
+	}
+
+	/**
+	 * Determines whether a item exists.
+	 */
+	public function offsetExists($key): bool
+	{
+		return isset($this->$key);
+	}
+
+	/**
+	 * Removes the element from this list.
+	 */
+	public function offsetUnset($key): void
+	{
+		unset($this->$key);
+	}
+
+}
\ No newline at end of file
diff --git a/src/GitLabApi.php b/src/GitLabApi.php
new file mode 100644
index 0000000..b39f1de
--- /dev/null
+++ b/src/GitLabApi.php
@@ -0,0 +1,311 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Baraja\GitLabApi;
+
+
+use Baraja\GitLabApi\Entity\ApiData;
+use Nette\Caching\Cache;
+use Nette\Caching\IStorage;
+use Nette\Security\User;
+
+class GitLabApi
+{
+
+	/**
+	 * @var string
+	 */
+	private $token;
+
+	/**
+	 * @var bool
+	 */
+	private $validateToken = false;
+
+	/**
+	 * @var Cache|null
+	 */
+	private $cache;
+
+	/**
+	 * @var string
+	 */
+	private $baseUrl = 'https://gitlab.com/api/v4/';
+
+	/**
+	 * For valid service you must set $token or Nette user profile.
+	 * If user profile is not available API will use default $token.
+	 *
+	 * @param string $token
+	 * @param User|null $user
+	 */
+	public function __construct(string $token, ?User $user = null)
+	{
+		// Nette User bridge
+		if ($user !== null && $user->isLoggedIn() && \method_exists($identity = $user->getIdentity(), 'getGitLabToken')) {
+			$token = $identity->getGitLabToken() ?? $token;
+		}
+
+		$this->token = $token;
+	}
+
+	/**
+	 * @param string $baseUrl
+	 */
+	public function setBaseUrl(string $baseUrl): void
+	{
+		$this->baseUrl = rtrim($baseUrl, '/') . '/';
+	}
+
+	/**
+	 * Use Nette Cache for storage API responses.
+	 *
+	 * @param IStorage $IStorage
+	 */
+	public function setCache(IStorage $IStorage): void
+	{
+		$this->cache = new Cache($IStorage, 'gitlab-api');
+	}
+
+	/**
+	 * @param string $url
+	 * @param string[]|null $data
+	 * @param string $cache
+	 * @param string|null $token
+	 * @return ApiData|ApiData[]
+	 * @throws GitLabApiException
+	 */
+	public function request(string $url, array $data = null, string $cache = '12 hours', string $token = null)
+	{
+		$token = $token ? : $this->token;
+		if ($this->validateToken === false) {
+			if ($url !== 'projects' && $this->validateToken($token) === false) {
+				GitLabApiException::tokenIsInvalid($token);
+			}
+			$this->validateToken = true;
+		}
+
+		$requestHash = 'url' . md5($url);
+		Helper::timer($requestHash);
+
+		$hash = md5(json_encode([$url, $data, $token]));
+		$body = $this->cache === null ? null : $this->cache->load($hash);
+
+		if (!isset($_SERVER['REMOTE_ADDR'])) {
+			echo "\e[0;32m" . '[GitLab | URL: ' . "\e[0m\e[0;33m" . $url . "\e[0m\e[0;32m"
+				. ($data !== null ? ', DATA: ' . json_encode($data) : '')
+				. ' | TOKEN: ' . json_encode($token)
+				. ']' . "\e[0m\n";
+		}
+
+		if ($body !== null) {
+			GitLabApiPanel::$baseUrl = $this->baseUrl;
+			GitLabApiPanel::$calls[] = [
+				'duration' => Helper::timer($requestHash) * 1000,
+				'url' => $url,
+				'isCache' => true,
+				'data' => $data,
+				'body' => $body,
+			];
+
+			return $body;
+		}
+
+		$fullUrl = rtrim($this->baseUrl, '/') . '/' . ltrim($url, '/');
+
+		$curl = curl_init();
+		curl_setopt_array($curl, [
+			CURLOPT_CUSTOMREQUEST => 'GET',
+			CURLOPT_RETURNTRANSFER => 1,
+			CURLOPT_URL => $fullUrl,
+			CURLOPT_HEADER => 1,
+			CURLINFO_HEADER_OUT => true,
+		]);
+
+		curl_setopt($curl, CURLOPT_HTTPHEADER, [
+			'PRIVATE-TOKEN: ' . $token,
+		]);
+
+		$resp = curl_exec($curl);
+		$headerSize = curl_getinfo($curl, CURLINFO_HEADER_SIZE);
+		$rawData = substr($resp, $headerSize);
+
+		$body = $this->mapToApiData(Helper::decode($rawData));
+
+		if (isset($body['error'])) {
+			$errorMessages = [];
+
+			foreach ($body as $key => $value) {
+				$errorMessages[] = trim($key) . ': ' . json_encode($value);
+			}
+
+			throw new GitLabApiException(implode("\n", $errorMessages), $errorMessages);
+		}
+
+		GitLabApiPanel::$baseUrl = $this->baseUrl;
+		GitLabApiPanel::$calls[] = [
+			'duration' => Helper::timer($requestHash) * 1000,
+			'url' => $url,
+			'isCache' => false,
+			'data' => $data,
+			'body' => $body,
+		];
+
+		curl_close($curl);
+
+		if ($this->cache !== null) {
+			$this->cache->save($hash, $body, [
+				Cache::EXPIRE => $cache,
+			]);
+		}
+
+		return $body;
+	}
+
+	/**
+	 * @param string $url
+	 * @param string[]|null $data
+	 * @param string $method
+	 * @param string|null $token
+	 * @return ApiData|ApiData[]
+	 * @throws GitLabApiException
+	 */
+	public function changeRequest(string $url, array $data = null, string $method = 'PUT', string $token = null)
+	{
+		$token = $token ? : $this->token;
+		if ($this->validateToken === false) {
+			if ($url !== 'projects' && $this->validateToken($token) === false) {
+				GitLabApiException::tokenIsInvalid($token);
+			}
+			$this->validateToken = true;
+		}
+
+		$requestHash = 'url' . md5($url);
+		Helper::timer($requestHash);
+
+		if (!isset($_SERVER['REMOTE_ADDR'])) {
+			echo "\e[0;32m" . '[GitLab | URL: ' . "\e[0m\e[0;33m" . $url . "\e[0m\e[0;32m"
+				. ($data !== null ? ', DATA: ' . json_encode($data) : '')
+				. ' | TOKEN: ' . json_encode($token)
+				. ']' . "\e[0m\n";
+		}
+
+		$fullUrl = rtrim($this->baseUrl, '/') . '/' . ltrim($url, '/');
+
+		$configRequest = [
+			CURLOPT_CUSTOMREQUEST => $method,
+			CURLOPT_RETURNTRANSFER => 1,
+			CURLOPT_URL => $fullUrl,
+			CURLOPT_HEADER => 1,
+		];
+
+		if ($data !== null) {
+			$configRequest[CURLOPT_POSTFIELDS] = http_build_query($data);
+		}
+
+		$curl = curl_init();
+		curl_setopt_array($curl, $configRequest);
+
+		curl_setopt($curl, CURLOPT_HTTPHEADER, [
+			'PRIVATE-TOKEN: ' . $token,
+		]);
+
+		$resp = curl_exec($curl);
+
+		if ($resp === false) {
+			GitLabApiPanel::$baseUrl = $this->baseUrl;
+			GitLabApiPanel::$calls[] = [
+				'duration' => Helper::timer($requestHash) * 1000,
+				'method' => $method,
+				'url' => $url,
+				'data' => $data,
+				'body' => $resp,
+			];
+
+			throw new GitLabApiException('[' . $url . ']: Curl return FALSE: ' . Helper::getLastErrorMessage());
+		}
+
+		$headerSize = curl_getinfo($curl, CURLINFO_HEADER_SIZE);
+		$rawData = substr((string) $resp, $headerSize);
+
+		$body = $this->mapToApiData(Helper::decode($rawData));
+
+		if (isset($body['error'])) {
+			$errorMessages = [];
+
+			foreach ($body as $key => $value) {
+				$errorMessages[] = trim($key) . ': ' . json_encode($value);
+			}
+
+			GitLabApiPanel::$baseUrl = $this->baseUrl;
+			GitLabApiPanel::$calls[] = [
+				'duration' => Helper::timer($requestHash) * 1000,
+				'method' => $method,
+				'url' => $url,
+				'data' => $data,
+				'body' => $body,
+			];
+
+			throw new GitLabApiException('[' . $url . ']: ' . implode("\n", $errorMessages), $errorMessages);
+		}
+
+		GitLabApiPanel::$baseUrl = $this->baseUrl;
+		GitLabApiPanel::$calls[] = [
+			'duration' => Helper::timer($requestHash) * 1000,
+			'method' => $method,
+			'url' => $url,
+			'data' => $data,
+			'body' => $body,
+		];
+
+		curl_close($curl);
+
+		return $body;
+	}
+
+	/**
+	 * @param string $token
+	 * @return bool
+	 * @throws GitLabApiException
+	 */
+	public function validateToken(string $token): bool
+	{
+		$response = $this->request('projects', null, '1 hour', $token);
+
+		return (\is_array($response) === false
+				&& $response->offsetExists('message')
+				&& $response->message === '401 Unauthorized'
+			) === false;
+	}
+
+	/**
+	 * @param \stdClass|\stdClass[] $haystack
+	 * @return ApiData|ApiData[]|string|bool|int|float
+	 */
+	private function mapToApiData($haystack)
+	{
+		if (\is_array($haystack)) {
+			$return = [];
+
+			foreach ($haystack as $key => $value) {
+				$return[$key] = $this->mapToApiData($value);
+			}
+
+			return $return;
+		}
+
+		if ($haystack instanceof \stdClass) {
+			$return = new ApiData;
+
+			foreach ($haystack as $key => $value) {
+				$return->{$key} = $value;
+			}
+
+			return $return;
+		}
+
+		return $haystack;
+	}
+
+}
\ No newline at end of file
diff --git a/src/GitLabApiException.php b/src/GitLabApiException.php
new file mode 100644
index 0000000..5f19c49
--- /dev/null
+++ b/src/GitLabApiException.php
@@ -0,0 +1,101 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Baraja\GitLabApi;
+
+
+class GitLabApiException extends \Exception
+{
+
+	public const ERROR_ERROR = 'error';
+	public const ERROR_INVALID_TOKEN = 'invalid_token';
+
+	/**
+	 * error: "invalid_token"
+	 * error_description: "Token was revoked. You have to re-authorize from the user."
+	 *
+	 * @var string[]
+	 */
+	private $errorConfigs;
+
+	/**
+	 * @param string $message
+	 * @param string[] $errorConfigs
+	 * @throws GitLabApiException
+	 */
+	public function __construct(string $message = '', array $errorConfigs = [])
+	{
+		parent::__construct($message, 403, null);
+		foreach ($errorConfigs as $errorConfig) {
+			if (preg_match('/^\"?(?<key>\w+?)\"?\:\s*\"?(?<value>.*?)\"?$/', $errorConfig, $errorConfigParser)) {
+				$this->errorConfigs[$errorConfigParser['key']] = $errorConfigParser['value'];
+			} else {
+				throw new self('Invalid error config:' . "\n\n" . \json_encode($errorConfigs));
+			}
+		}
+	}
+
+	/**
+	 * @param string $token
+	 * @throws GitLabApiException
+	 */
+	public static function tokenIsInvalid(string $token): void
+	{
+		throw new self(
+			'GitLab token "' . $token . '" is invalid.'
+		);
+	}
+
+	/**
+	 * @return string[]
+	 */
+	public function getErrorConfigs(): array
+	{
+		return $this->errorConfigs;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getErrorType(): string
+	{
+		if ($this->isKey('error')) {
+			return $this->getKey('error', self::ERROR_ERROR);
+		}
+
+		return self::ERROR_ERROR;
+	}
+
+	/**
+	 * @return bool
+	 */
+	public function isDefaultError(): bool
+	{
+		return $this->getErrorType() === self::ERROR_ERROR;
+	}
+
+	/**
+	 * @param string $key
+	 * @return bool
+	 */
+	public function isKey(string $key): bool
+	{
+		return isset($this->errorConfigs[$key]);
+	}
+
+	/**
+	 * @param string $key
+	 * @param string|null $default
+	 * @return string|null
+	 */
+	public function getKey(string $key, ?string $default = null): ?string
+	{
+		if ($this->isKey($key)) {
+			return $this->errorConfigs[$key];
+		}
+
+		return $default;
+	}
+
+}
\ No newline at end of file
diff --git a/src/GitLabApiPanel.php b/src/GitLabApiPanel.php
new file mode 100644
index 0000000..aaa3135
--- /dev/null
+++ b/src/GitLabApiPanel.php
@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Baraja\GitLabApi;
+
+
+use Tracy\Dumper;
+use Tracy\IBarPanel;
+
+class GitLabApiPanel implements IBarPanel
+{
+
+	private const ICON = 'data:image/png;base64,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';
+
+	/**
+	 * @var string[][]
+	 */
+	public static $calls = [];
+
+	/**
+	 * @var string
+	 */
+	public static $baseUrl;
+
+	public function getTab(): string
+	{
+		$duration = 0;
+		foreach (self::$calls as $call) {
+			$duration += $call['duration'];
+		}
+
+		return '<span title="GitLab calls">'
+			. '<img style="height:16px" src="' . self::ICON . '" alt="GitLab panel" title="GitLab">'
+			. \count(self::$calls) . ' requests'
+			. ($duration > 0 ? ' / ' . number_format($duration, 2, '.', ' ') . ' ms' : '')
+			. '</span>';
+	}
+
+	public function getPanel(): string
+	{
+		if (\count(self::$calls) > 0) {
+			$table = '<table>';
+			$table .= '<tr><th>Time&nbsp;ms</th><th>Url</th><th>Data</th><th>Body</th></tr>';
+			foreach (self::$calls as $call) {
+				$table .= '<tr>'
+					. '<td>' . number_format($call['duration'], 2, '.', ' ') . '&nbsp;ms'
+					. (($call['isCache'] ?? false) ? '<br><small style="color:green">cache</small>' : '')
+					. '</td>'
+					. '<td><span style="color:blue">' . ($call['method'] ?? 'GET') . '</span>&nbsp;' . $call['url'] . '</td>'
+					. '<td>' . Dumper::toHtml($call['data']) . '</td>'
+					. '<td>' . Dumper::toHtml($call['body']) . '</td>'
+					. '</tr>';
+			}
+
+			$table .= '</table>';
+		} else {
+			$table = '<em>No GitLab requests.</em>';
+		}
+
+		return '<h1>GitLab requests' . (self::$baseUrl ? ' [' . self::$baseUrl . ']' : '') . '</h1>'
+			. '<div class="tracy-inner">' . $table . '</div>';
+	}
+
+}
\ No newline at end of file
diff --git a/src/Helper.php b/src/Helper.php
new file mode 100644
index 0000000..8321859
--- /dev/null
+++ b/src/Helper.php
@@ -0,0 +1,76 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Baraja\GitLabApi;
+
+
+class Helper
+{
+
+	private const FORCE_ARRAY = 0b0001;
+
+	/**
+	 * Migrated from Nette/Tracy.
+	 *
+	 * @param string|null $name
+	 * @return float
+	 */
+	public static function timer(?string $name = null): float
+	{
+		static $time = [];
+		$now = microtime(true);
+		$delta = isset($time[$name]) ? $now - $time[$name] : 0;
+		$time[$name] = $now;
+
+		return $delta;
+	}
+
+	/**
+	 * Migrated from Nette/Utils.
+	 * Decodes a JSON string. Accepts flag Json::FORCE_ARRAY.
+	 *
+	 * @param string $json
+	 * @param int $flags
+	 * @return mixed
+	 * @throws GitLabApiException
+	 */
+	public static function decode(string $json, int $flags = 0)
+	{
+		$forceArray = (bool) ($flags & self::FORCE_ARRAY);
+		$value = json_decode($json, $forceArray, 512, JSON_BIGINT_AS_STRING);
+
+		if ($error = json_last_error()) {
+			throw new GitLabApiException(json_last_error_msg() . "\nCode: " . $error);
+		}
+
+		return $value;
+	}
+
+	/**
+	 * Return last PHP error (notice, warning..)
+	 *
+	 * Function will return last error in case of "display_errors=0" or "error_reporting=0" or "@ syntax" too.
+	 *
+	 * Use case:
+	 *
+	 * if (!@rename($src, $dst)) {
+	 *    throw new Exception('Unable to move directory: ' . Helper::getLastErrorMessage());
+	 * }
+	 *
+	 * @return string|null
+	 */
+	public static function getLastErrorMessage(): ?string
+	{
+		$return = null;
+		static $pattern = '/\s*\[\<a[^>]+>[a-z0-9\.\-\_\(\)]+<\/a>\]\s*/i';
+
+		$lastError = error_get_last();
+		if ($lastError && isset($lastError['message'])) {
+			$return = trim((string) preg_replace($pattern, ' ', (string) $lastError['message']));
+		}
+
+		return $return;
+	}
+
+}
\ No newline at end of file