auto-alt-text / src / App / AIProviders / Azure / AzureTranslator.php

AzureTranslator.php in Auto Alt Text 2.8.1, at src/App/AIProviders/Azure/AzureTranslator.php

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1	<?php
2
3	namespace AATXT\App\AIProviders\Azure;
4
5	use AATXT\App\AIProviders\AITranslatorInterface;
6	use AATXT\App\Configuration\AzureConfig;
7	use AATXT\App\Exceptions\Azure\AzureTranslateInstanceException;
8	use AATXT\App\Infrastructure\Http\HttpClientInterface;
9
10	/**
11	* Azure Translator provider for translating text.
12	*
13	* This class uses dependency injection to receive HTTP client and configuration,
14	* removing static dependencies on PluginOptions.
15	*/
16	class AzureTranslator implements AITranslatorInterface
17	{
18	private HttpClientInterface $httpClient;
19	private AzureConfig $config;
20
21	/**
22	* Constructor.
23	*
24	* @param HttpClientInterface $httpClient HTTP client for API calls
25	* @param AzureConfig $config Azure configuration with API keys and endpoints
26	*/
27	public function __construct(HttpClientInterface $httpClient, AzureConfig $config)
28	{
29	$this->httpClient = $httpClient;
30	$this->config = $config;
31	}
32
33	/**
34	* Translate a string sending a request to the Azure translation Api
35	* @param string $text
36	* @param string $language
37	* @return string
38	* @throws AzureTranslateInstanceException
39	*/
40	public function translate(string $text, string $language): string
41	{
42	$apiKey = $this->config->getTranslationApiKey();
43	$region = $this->config->getRegion();
44	$endpoint = $this->config->getTranslationEndpoint();
45
46	if (empty($apiKey) \|\| empty($region) \|\| empty($endpoint)) {
47	return $text;
48	}
49
50	$route = "translate?api-version=3.0&from=en&to=" . $language;
51	$url = $endpoint . $route;
52
53	$headers = [
54	'Content-type' => 'application/json',
55	'Ocp-Apim-Subscription-Key' => $apiKey,
56	'Ocp-Apim-Subscription-Region' => $region,
57	];
58
59	$payload = [
60	[
61	'Text' => $text
62	]
63	];
64
65	try {
66	$bodyResult = $this->httpClient->post($url, $headers, $payload);
67	} catch (\Exception $e) {
68	throw new AzureTranslateInstanceException('HTTP request failed: ' . $e->getMessage());
69	}
70
71	if (array_key_exists('error', $bodyResult)) {
72	throw new AzureTranslateInstanceException("Error code: " . $bodyResult['error']['code'] . " - " . $bodyResult['error']['message']);
73	}
74
75	return $bodyResult[0]['translations'][0]['text'];
76	}
77
78	/**
79	* Get the list of supported languages from Azure Api
80	* @return array
81	* @throws AzureTranslateInstanceException
82	*/
83	public function supportedLanguages(): array
84	{
85	$apiKey = $this->config->getTranslationApiKey();
86	if (empty($apiKey)) {
87	return [];
88	}
89	$endpoint = $this->config->getTranslationEndpoint();
90	if (empty($endpoint)) {
91	return [];
92	}
93
94	$route = 'languages?api-version=3.0';
95	$url = $endpoint . $route;
96
97	$headers = [
98	'Content-type' => 'application/json',
99	'Ocp-Apim-Subscription-Key' => $apiKey
100	];
101
102	try {
103	$bodyResult = $this->httpClient->get($url, $headers);
104	} catch (\Exception $e) {
105	throw new AzureTranslateInstanceException(
106	esc_html__('No language retrieved: maybe the translation endpoint is wrong. Please check it out and try again.', 'auto-alt-text')
107	);
108	}
109
110	if (empty($bodyResult)) {
111	throw new AzureTranslateInstanceException(
112	esc_html__('No language retrieved: maybe the translation endpoint is wrong. Please check it out and try again.', 'auto-alt-text')
113	);
114	}
115
116	if (array_key_exists('error', $bodyResult)) {
117	throw new AzureTranslateInstanceException("Error code: " . $bodyResult['error']['code'] . " - " . $bodyResult['error']['message']);
118	}
119
120	return $bodyResult['translation'];
121	}
122	}