36584-vm/api/index.php

<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

header('Content-Type: application/json');

require_once __DIR__ . '/../ai/LocalAIApi.php';
require_once __DIR__ . '/../includes/pexels.php';
require_once __DIR__ . '/../db/config.php';

$action = $_GET['action'] ?? 'get_suggestion';

switch ($action) {
    case 'get_suggestion':
        handle_get_suggestion();
        break;
    case 'save_suggestion':
        handle_save_suggestion();
        break;
    default:
        echo json_encode(['error' => 'Invalid action']);
        break;
}

function handle_get_suggestion() {
    $requestBody = file_get_contents('php://input');
    $data = json_decode($requestBody, true);

    $query = $data['query'] ?? '';
    $persona = $data['persona'] ?? 'travel_agent';
    $conversation = $data['conversation'] ?? [];

    if (empty($query)) {
        echo json_encode(['error' => 'Query is empty']);
        exit;
    }

    $conversation[] = ['role' => 'user', 'content' => $query];

    $persona_prompts = [
        'travel_agent' => 'You are a helpful travel agent specializing in Poland.',
        'historian' => 'You are a historian specializing in Polish history. Your responses should be informative, detailed, and focus on the historical significance of places and events.',
        'foodie' => 'You are a food critic and blogger with a passion for Polish cuisine. Your responses should be enthusiastic, descriptive, and focus on food, restaurants, and culinary experiences.',
        'adventurer' => 'You are an adventure travel guide who loves exploring the wild side of Poland. Your responses should be exciting, energetic, and focus on outdoor activities, hiking, and unique experiences.'
    ];

    $system_prompt = $persona_prompts[$persona] . ' Provide a travel suggestion with a title, a short description, a 3-day itinerary, and the latitude and longitude of the location. Your response must be in JSON format, like this: {"title": "...", "description": "...", "itinerary": [{"day": 1, "activities": ["...", "..."]}, {"day": 2, "activities": ["...", "..."]}, {"day": 3, "activities": ["...", "..."]}], "location": {"lat": ..., "lng": ...}}. The user is on a conversation, so answer the last query based on the context of the conversation.';

    $messages = array_merge([['role' => 'system', 'content' => $system_prompt]], $conversation);

    $resp = LocalAIApi::createResponse(
        [
            'input' => $messages
        ]
    );

    if (!empty($resp['success'])) {
        $text = LocalAIApi::extractText($resp);
        $aiResponse = json_decode($text, true);

        if (json_last_error() !== JSON_ERROR_NONE) {
            preg_match('/"title":\s*"(.*?)"/', $text, $title_matches);
            preg_match('/"description":\s*"(.*?)"/', $text, $description_matches);
            $title = $title_matches[1] ?? 'AI Generated Response';
            $description = $description_matches[1] ?? $text;
            $itinerary = [];
            $location = null;
        } else {
            $title = $aiResponse['title'] ?? 'AI Generated Response';
            $description = $aiResponse['description'] ?? 'No description available.';
            $itinerary = $aiResponse['itinerary'] ?? [];
            $location = $aiResponse['location'] ?? null;
        }

        $pexelsUrl = 'https://api.pexels.com/v1/search?query=' . urlencode($title) . '&orientation=landscape&per_page=1&page=1';
        $pexelsData = pexels_get($pexelsUrl);

        $imageUrl = 'https://images.pexels.com/photos/1699030/pexels-photo-1699030.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=1';
        if ($pexelsData && !empty($pexelsData['photos'])) {
            $photo = $pexelsData['photos'][0];
            $imageUrl = $photo['src']['large2x'] ?? ($photo['src']['large'] ?? $photo['src']['original']);
        }

        echo json_encode([
            'title' => $title,
            'description' => $description,
            'itinerary' => $itinerary,
            'location' => $location,
            'image' => $imageUrl
        ]);
    } else {
        error_log('AI error: ' . ($resp['error'] ?? 'unknown'));
        echo json_encode(['error' => 'Failed to get AI response']);
    }
}

function handle_save_suggestion() {
    $requestBody = file_get_contents('php://input');
    $data = json_decode($requestBody, true);

    $title = $data['title'] ?? null;
    $description = $data['description'] ?? null;
    $itinerary = $data['itinerary'] ?? null;
    $location = $data['location'] ?? null;
    $image_url = $data['image'] ?? null;

    if (empty($title)) {
        echo json_encode(['error' => 'Title is required to save a suggestion.']);
        exit;
    }

    try {
        $pdo = db();
        $stmt = $pdo->prepare("
            INSERT INTO saved_suggestions (title, description, itinerary, location, image_url)
            VALUES (:title, :description, :itinerary, :location, :image_url)
        ");
        $stmt->execute([
            ':title' => $title,
            ':description' => $description,
            ':itinerary' => json_encode($itinerary),
            ':location' => json_encode($location),
            ':image_url' => $image_url
        ]);
        echo json_encode(['success' => true, 'id' => $pdo->lastInsertId()]);
    } catch (PDOException $e) {
        error_log('DB error: ' . $e->getMessage());
        echo json_encode(['error' => 'Failed to save suggestion to the database.']);
    }
}