<?php

/**
 * Payments API SDK
 * Auto-generated — v1.0
 */
class PaymentsClient
{
    private string $baseUrl;
    private string $token;
    private array $headers;

    public function __construct(string $token, string $baseUrl = 'https://api.aikdata.com/v1/payments')
    {
        $this->token = $token;
        $this->baseUrl = rtrim($baseUrl, '/');
        $this->headers = [
            'Authorization: Bearer ' . $this->token,
            'Content-Type: application/json',
            'Accept: application/json',
        ];
    }

    // ── Charges ──

    /**
     * Create a new payment charge
     */
    public function createCharge(array $body = []): array
    {
        return $this->request('POST', '/charge', [], $body);
    }

    /**
     * Retrieve a charge by ID
     */
    public function getCharge(string $id): array
    {
        return $this->request('GET', '/charge/' . urlencode($id) . '');
    }

    /**
     * List all charges with pagination
     */
    public function listCharges(array $query = []): array
    {
        return $this->request('GET', '/charges', $query);
    }

    // ── Refunds ──

    /**
     * Refund a charge fully or partially
     */
    public function createRefund(array $body = []): array
    {
        return $this->request('POST', '/refund', [], $body);
    }


    // ── HTTP helpers ──

    private function request(string $method, string $path, array $query = [], array $body = []): array
    {
        $url = $this->baseUrl . $path;
        if (!empty($query)) {
            $url .= '?' . http_build_query($query);
        }

        $ch = curl_init($url);
        curl_setopt_array($ch, [
            CURLOPT_CUSTOMREQUEST  => $method,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_HTTPHEADER     => $this->headers,
            CURLOPT_TIMEOUT        => 30,
        ]);

        if (!empty($body) && in_array($method, ['POST', 'PUT', 'PATCH'])) {
            curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($body));
        }

        $response = curl_exec($ch);
        $status   = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        return ['status' => $status, 'data' => json_decode($response, true)];
    }
}