|
| 1 | +<?php |
| 2 | + |
| 3 | +namespace BabyMarkt\DeepL; |
| 4 | + |
| 5 | +/** |
| 6 | + * Class Client implements a DeepL http Client based on PHP-CURL |
| 7 | + */ |
| 8 | +final class Client implements ClientInterface |
| 9 | +{ |
| 10 | + const API_URL_SCHEMA = 'https'; |
| 11 | + |
| 12 | + /** |
| 13 | + * API BASE URL without authentication query parameter |
| 14 | + * https://api.deepl.com/v2/[resource] |
| 15 | + */ |
| 16 | + const API_URL_BASE_NO_AUTH = '%s://%s/v%s/%s'; |
| 17 | + |
| 18 | + /** |
| 19 | + * DeepL API Version (v2 is default since 2018) |
| 20 | + * |
| 21 | + * @var integer |
| 22 | + */ |
| 23 | + protected $apiVersion; |
| 24 | + |
| 25 | + /** |
| 26 | + * DeepL API Auth Key (DeepL Pro access required) |
| 27 | + * |
| 28 | + * @var string |
| 29 | + */ |
| 30 | + protected $authKey; |
| 31 | + |
| 32 | + /** |
| 33 | + * cURL resource |
| 34 | + * |
| 35 | + * @var resource |
| 36 | + */ |
| 37 | + protected $curl; |
| 38 | + |
| 39 | + /** |
| 40 | + * Hostname of the API (in most cases api.deepl.com) |
| 41 | + * |
| 42 | + * @var string |
| 43 | + */ |
| 44 | + protected $host; |
| 45 | + |
| 46 | + /** |
| 47 | + * Maximum number of seconds the query should take |
| 48 | + * |
| 49 | + * @var int|null |
| 50 | + */ |
| 51 | + protected $timeout = null; |
| 52 | + |
| 53 | + /** |
| 54 | + * URL of the proxy used to connect to DeepL (if needed) |
| 55 | + * |
| 56 | + * @var string|null |
| 57 | + */ |
| 58 | + protected $proxy = null; |
| 59 | + |
| 60 | + /** |
| 61 | + * Credentials for the proxy used to connect to DeepL (username:password) |
| 62 | + * |
| 63 | + * @var string|null |
| 64 | + */ |
| 65 | + protected $proxyCredentials = null; |
| 66 | + |
| 67 | + /** |
| 68 | + * DeepL constructor |
| 69 | + * |
| 70 | + * @param string $authKey |
| 71 | + * @param integer $apiVersion |
| 72 | + * @param string $host |
| 73 | + */ |
| 74 | + public function __construct($authKey, $apiVersion = 2, $host = 'api.deepl.com') |
| 75 | + { |
| 76 | + $this->authKey = $authKey; |
| 77 | + $this->apiVersion = $apiVersion; |
| 78 | + $this->host = $host; |
| 79 | + $this->curl = curl_init(); |
| 80 | + |
| 81 | + curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, 1); |
| 82 | + } |
| 83 | + |
| 84 | + /** |
| 85 | + * DeepL destructor |
| 86 | + */ |
| 87 | + public function __destruct() |
| 88 | + { |
| 89 | + if ($this->curl && is_resource($this->curl)) { |
| 90 | + curl_close($this->curl); |
| 91 | + } |
| 92 | + } |
| 93 | + |
| 94 | + /** |
| 95 | + * Make a request to the given URL |
| 96 | + * |
| 97 | + * @param string $url |
| 98 | + * @param string $body |
| 99 | + * @param string $method |
| 100 | + * |
| 101 | + * @return array |
| 102 | + * |
| 103 | + * @throws DeepLException |
| 104 | + */ |
| 105 | + public function request($url, $body = '', $method = 'POST') |
| 106 | + { |
| 107 | + switch ($method) { |
| 108 | + case 'DELETE': |
| 109 | + curl_setopt($this->curl, CURLOPT_CUSTOMREQUEST, 'DELETE'); |
| 110 | + break; |
| 111 | + case 'POST': |
| 112 | + curl_setopt($this->curl, CURLOPT_POST, true); |
| 113 | + curl_setopt($this->curl, CURLOPT_POSTFIELDS, $body); |
| 114 | + break; |
| 115 | + case 'GET': |
| 116 | + default: |
| 117 | + break; |
| 118 | + } |
| 119 | + |
| 120 | + curl_setopt($this->curl, CURLOPT_URL, $url); |
| 121 | + |
| 122 | + curl_setopt($this->curl, CURLOPT_HTTPHEADER, ['Content-Type: application/x-www-form-urlencoded']); |
| 123 | + curl_setopt($this->curl, CURLOPT_HTTPHEADER, ['Authorization: DeepL-Auth-Key ' . $this->authKey]); |
| 124 | + |
| 125 | + if ($this->proxy !== null) { |
| 126 | + curl_setopt($this->curl, CURLOPT_PROXY, $this->proxy); |
| 127 | + } |
| 128 | + |
| 129 | + if ($this->proxyCredentials !== null) { |
| 130 | + curl_setopt($this->curl, CURLOPT_PROXYAUTH, $this->proxyCredentials); |
| 131 | + } |
| 132 | + |
| 133 | + if ($this->timeout !== null) { |
| 134 | + curl_setopt($this->curl, CURLOPT_TIMEOUT, $this->timeout); |
| 135 | + } |
| 136 | + |
| 137 | + $response = curl_exec($this->curl); |
| 138 | + |
| 139 | + if (curl_errno($this->curl)) { |
| 140 | + throw new DeepLException('There was a cURL Request Error : ' . curl_error($this->curl)); |
| 141 | + } |
| 142 | + $httpCode = curl_getinfo($this->curl, CURLINFO_HTTP_CODE); |
| 143 | + |
| 144 | + return $this->handleResponse($response, $httpCode); |
| 145 | + } |
| 146 | + |
| 147 | + /** |
| 148 | + * Set a proxy to use for querying the DeepL API if needed |
| 149 | + * |
| 150 | + * @param string $proxy Proxy URL (e.g 'http://proxy-domain.com:3128') |
| 151 | + */ |
| 152 | + public function setProxy($proxy) |
| 153 | + { |
| 154 | + $this->proxy = $proxy; |
| 155 | + } |
| 156 | + |
| 157 | + /** |
| 158 | + * Set the proxy credentials |
| 159 | + * |
| 160 | + * @param string $proxyCredentials proxy credentials (using 'username:password' format) |
| 161 | + */ |
| 162 | + public function setProxyCredentials($proxyCredentials) |
| 163 | + { |
| 164 | + $this->proxyCredentials = $proxyCredentials; |
| 165 | + } |
| 166 | + |
| 167 | + /** |
| 168 | + * Set a timeout for queries to the DeepL API |
| 169 | + * |
| 170 | + * @param int $timeout Timeout in seconds |
| 171 | + */ |
| 172 | + public function setTimeout($timeout) |
| 173 | + { |
| 174 | + $this->timeout = $timeout; |
| 175 | + } |
| 176 | + |
| 177 | + /** |
| 178 | + * Creates the Base-Url which all the API-resources have in common. |
| 179 | + * |
| 180 | + * @param string $resource |
| 181 | + * @param bool $withAuth |
| 182 | + * |
| 183 | + * @return string |
| 184 | + */ |
| 185 | + public function buildBaseUrl(string $resource = 'translate'): string |
| 186 | + { |
| 187 | + return sprintf( |
| 188 | + self::API_URL_BASE_NO_AUTH, |
| 189 | + self::API_URL_SCHEMA, |
| 190 | + $this->host, |
| 191 | + $this->apiVersion, |
| 192 | + $resource |
| 193 | + ); |
| 194 | + } |
| 195 | + |
| 196 | + /** |
| 197 | + * @param array $paramsArray |
| 198 | + * |
| 199 | + * @return string |
| 200 | + */ |
| 201 | + public function buildQuery($paramsArray) |
| 202 | + { |
| 203 | + if (isset($paramsArray['text']) && true === is_array($paramsArray['text'])) { |
| 204 | + $text = $paramsArray['text']; |
| 205 | + unset($paramsArray['text']); |
| 206 | + $textString = ''; |
| 207 | + foreach ($text as $textElement) { |
| 208 | + $textString .= '&text=' . rawurlencode($textElement); |
| 209 | + } |
| 210 | + } |
| 211 | + |
| 212 | + foreach ($paramsArray as $key => $value) { |
| 213 | + if (true === is_array($value)) { |
| 214 | + $paramsArray[$key] = implode(',', $value); |
| 215 | + } |
| 216 | + } |
| 217 | + |
| 218 | + $body = http_build_query($paramsArray, null, '&'); |
| 219 | + |
| 220 | + if (isset($textString)) { |
| 221 | + $body = $textString . '&' . $body; |
| 222 | + } |
| 223 | + |
| 224 | + return $body; |
| 225 | + } |
| 226 | + |
| 227 | + /** |
| 228 | + * Handles the different kind of response returned from API, array, string or null |
| 229 | + * |
| 230 | + * @param $response |
| 231 | + * @param $httpCode |
| 232 | + * |
| 233 | + * @return array|mixed|null |
| 234 | + * |
| 235 | + * @throws DeepLException |
| 236 | + */ |
| 237 | + private function handleResponse($response, $httpCode) |
| 238 | + { |
| 239 | + $responseArray = json_decode($response, true); |
| 240 | + if (($httpCode === 200 || $httpCode === 204) && is_null($responseArray)) { |
| 241 | + return empty($response) ? null : $response; |
| 242 | + } |
| 243 | + |
| 244 | + if ($httpCode !== 200 && is_array($responseArray) && array_key_exists('message', $responseArray)) { |
| 245 | + throw new DeepLException($responseArray['message'], $httpCode); |
| 246 | + } |
| 247 | + |
| 248 | + if (!is_array($responseArray)) { |
| 249 | + throw new DeepLException('The Response seems to not be valid JSON.', $httpCode); |
| 250 | + } |
| 251 | + |
| 252 | + return $responseArray; |
| 253 | + } |
| 254 | +} |
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