fluent-support / app / Services / Integrations / FluentBot / FluentBotAPI.php

FluentBotAPI.php in Fluent Support – Helpdesk & Customer Support Ticket System 2.1.0, at app/Services/Integrations/FluentBot/FluentBotAPI.php

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1	<?php
2
3	namespace FluentSupport\App\Services\Integrations\FluentBot;
4
5	use WP_Error;
6
7	class FluentBotAPI
8	{
9	protected $apiUrl;
10
11	public function __construct(string $apiUrl)
12	{
13	$this->apiUrl = $apiUrl;
14	}
15
16	public function makeRequest(int $ticketId, $prompt, array $args = [])
17	{
18	$response = $this->sendRequest($args);
19
20	if (is_wp_error($response)) {
21	$message = $response->get_error_message();
22	$code = $response->get_error_code();
23	return new \WP_Error($code, $message);
24	}
25
26	$responseBody = json_decode(wp_remote_retrieve_body($response), true) ?? [];
27
28	if (!$responseBody \|\| !is_array($responseBody)) {
29	return new \WP_Error('fluent_bot_error', __('Invalid or empty response from API', 'fluent-support'));
30	}
31
32	if (!empty($responseBody['error'])) {
33	$message = $responseBody['error']['message'] ?? __('Unknown error occurred', 'fluent-support');
34	return new \WP_Error('fluent_bot_error', $message);
35	}
36
37	$statusCode = wp_remote_retrieve_response_code($response);
38
39	if ($statusCode !== 200) {
40	$error = $responseBody['message'] ?? __('Something went wrong.', 'fluent-support');
41	return new \WP_Error($statusCode, $error);
42	}
43
44	$content = $responseBody['response'] ?? '';
45
46	if (empty($content)) {
47	return new \WP_Error('fluent_bot_error', __('No AI response found in the API response.', 'fluent-support'));
48	}
49
50	$totalTokens = $responseBody['token_usage']['total_tokens'] ?? $responseBody['totalTokens'] ?? 0;
51	do_action('fluent_support/ai_response_success', $ticketId, $prompt, $totalTokens, "Fluent Bot");
52
53	// Return both content and chat_id if available
54	return [
55	'content' => $content,
56	'chat_id' => $responseBody['chat_id'] ?? null
57	];
58	}
59
60	public function makeStreamRequest(int $ticketId, $prompt, array $args = [])
61	{
62	$timeout = apply_filters('fs_ai_request_timeout', 120);
63
64	// Use cURL for streaming
65	// Note: Using cURL here because WordPress HTTP API doesn't support streaming SSE responses
66	// phpcs:disable WordPress.WP.AlternativeFunctions.curl_curl_init
67	// phpcs:disable WordPress.WP.AlternativeFunctions.curl_curl_setopt
68	// phpcs:disable WordPress.WP.AlternativeFunctions.curl_curl_exec
69	// phpcs:disable WordPress.WP.AlternativeFunctions.curl_curl_close
70	// phpcs:disable WordPress.WP.AlternativeFunctions.curl_curl_getinfo
71	// phpcs:disable WordPress.WP.AlternativeFunctions.curl_curl_error
72	// PluginCheck:ignoreFile
73	$ch = curl_init();
74	curl_setopt($ch, CURLOPT_URL, $this->apiUrl);
75	curl_setopt($ch, CURLOPT_POST, true);
76	curl_setopt($ch, CURLOPT_POSTFIELDS, wp_json_encode($args));
77	curl_setopt($ch, CURLOPT_HTTPHEADER, [
78	'Content-Type: application/json',
79	]);
80
81	$buffer = '';
82	$conversationId = null;
83
84	curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($ch, $data) use (&$buffer, &$conversationId) {
85	$buffer .= $data;
86
87	// Process complete SSE events from the AI API
88	$events = explode("\n\n", $buffer);
89	$buffer = array_pop($events); // Keep incomplete event in buffer
90
91	foreach ($events as $event) {
92	if (trim($event)) {
93	$lines = explode("\n", $event);
94	$eventType = '';
95	$eventId = '';
96	$eventDataLines = [];
97
98	foreach ($lines as $line) {
99	if (strpos($line, 'event: ') === 0) {
100	$eventType = trim((string)substr($line, 7));
101	} elseif (strpos($line, 'id: ') === 0) {
102	$eventId = trim((string)substr($line, 4));
103	} elseif (strpos($line, 'data: ') === 0) {
104	$eventDataLines[] = (string)substr($line, 6);
105	}
106	}
107
108	// Forward the event to the browser with proper formatting
109	if ($eventType) {
110	echo "event: ".esc_html($eventType)."\n";
111
112	// Include ID if present
113	if ($eventId !== '') {
114	echo "id: ".esc_html($eventId)."\n";
115	}
116
117	// Handle multiple data lines properly
118	if (!empty($eventDataLines)) {
119	foreach ($eventDataLines as $dataLine) {
120	echo "data: ".esc_html($dataLine)."\n";
121	}
122	} else {
123	echo "data: \n";
124	}
125
126	echo "\n";
127
128	// Store chat_id for later use
129	if ($eventType === 'chat_id' && !empty($eventDataLines)) {
130	$conversationId = $eventDataLines[0];
131	}
132
133	flush();
134	}
135	}
136	}
137
138	return strlen($data);
139	});
140
141	curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
142	curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
143	curl_setopt($ch, CURLOPT_BUFFERSIZE, 128); // Smaller buffer for faster streaming
144
145	$result = curl_exec($ch);
146	$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
147
148	if (curl_error($ch)) {
149	echo "event: error\n";
150	echo "data: " . json_encode(['error' => curl_error($ch)]) . "\n\n";
151	flush();
152	}
153
154	curl_close($ch);
155
156	// phpcs:enable WordPress.WP.AlternativeFunctions.curl_curl_init
157	// phpcs:enable WordPress.WP.AlternativeFunctions.curl_curl_setopt
158	// phpcs:enable WordPress.WP.AlternativeFunctions.curl_curl_exec
159	// phpcs:enable WordPress.WP.AlternativeFunctions.curl_curl_close
160	// phpcs:enable WordPress.WP.AlternativeFunctions.curl_curl_getinfo
161	// phpcs:enable WordPress.WP.AlternativeFunctions.curl_curl_error
162
163	if ($httpCode === 200) {
164	do_action('fluent_support/ai_response_success', $ticketId, $prompt, 0, "Fluent Bot");
165	}
166	}
167
168	protected function sendRequest(array $payload)
169	{
170	$headers = [
171	'Content-Type' => 'application/json',
172	];
173
174	$timeout = apply_filters('fs_ai_request_timeout', 60);
175
176	return wp_remote_post($this->apiUrl, [
177	'headers' => $headers,
178	'body' => wp_json_encode($payload),
179	'timeout' => $timeout,
180	]);
181	}
182	}
183