<?php

class NocDisplayAgent
{
    private string $host;
    private int $port;
    private int $timeout;
    private int $connectTimeout;

    public function __construct(string $host, int $port = 5000, int $timeout = 10, int $connectTimeout = 5)
    {
        $this->host = $host;
        $this->port = $port;
        $this->timeout = $timeout;
        $this->connectTimeout = $connectTimeout;
    }

    public static function fromDisplay(array $display): self
    {
        return new self($display['ip_address'], $display['agent_port'] ?? 5000);
    }

    private function request(string $method, string $endpoint, ?array $data = null): array
    {
        $ch = curl_init();
        curl_setopt_array($ch, [
            CURLOPT_URL => "http://{$this->host}:{$this->port}{$endpoint}",
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_TIMEOUT => $this->timeout,
            CURLOPT_CONNECTTIMEOUT => $this->connectTimeout,
            CURLOPT_FOLLOWLOCATION => true,
        ]);

        if ($method === 'POST') {
            curl_setopt($ch, CURLOPT_POST, true);
            if ($data) {
                curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
                curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
            }
        }

        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        $error = curl_error($ch);
        curl_close($ch);

        if ($error) {
            return ['success' => false, 'error' => $error, 'online' => false];
        }

        $result = json_decode($response, true) ?? [];
        $result['http_code'] = $httpCode;
        $result['success'] = $httpCode >= 200 && $httpCode < 300;
        $result['online'] = true;
        return $result;
    }

    public function health(): array
    {
        return $this->request('GET', '/health');
    }

    public function status(): array
    {
        return $this->request('GET', '/status');
    }

    public function isOnline(): bool
    {
        $result = $this->health();
        return ($result['status'] ?? '') === 'ok';
    }

    public function setUrl(int $port, string $url): array
    {
        if ($port < 0 || $port > 1) return ['success' => false, 'error' => 'Port must be 0 or 1'];
        return $this->request('POST', "/display/{$port}/url", ['url' => $url]);
    }

    public function refresh(int $port): array
    {
        if ($port < 0 || $port > 1) return ['success' => false, 'error' => 'Port must be 0 or 1'];
        return $this->request('POST', "/display/{$port}/refresh");
    }

    public function cecOn(int $port): array
    {
        if ($port < 0 || $port > 1) return ['success' => false, 'error' => 'Port must be 0 or 1'];
        return $this->request('POST', "/cec/{$port}/on");
    }

    public function cecOff(int $port): array
    {
        if ($port < 0 || $port > 1) return ['success' => false, 'error' => 'Port must be 0 or 1'];
        return $this->request('POST', "/cec/{$port}/off");
    }

    public function reboot(): array
    {
        return $this->request('POST', '/system/reboot');
    }
}