<?php

require_once 'astro_functions.php';

const SWISSEPH_API_BASE_URL = 'http://bibgit.com:8081/api.php';
const SWISSEPH_API_TIMEOUT  = 20;

function buildSwissephApiUrl(
    string $date,
    string $time,
    float $latitude,
    float $longitude,
    string $timezone = 'Asia/Kathmandu'
): string {
    return SWISSEPH_API_BASE_URL
        . '?date=' . urlencode($date)
        . '&time=' . urlencode($time)
        . '&timezone=' . urlencode($timezone)
        . '&latitude=' . urlencode((string)$latitude)
        . '&longitude=' . urlencode((string)$longitude);
}

function fetchRemoteSwissephResponse(
    string $date,
    string $time,
    float $latitude,
    float $longitude,
    string $timezone = 'Asia/Kathmandu'
): array {
    $url = buildSwissephApiUrl($date, $time, $latitude, $longitude, $timezone);

    if (function_exists('curl_init')) {
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_TIMEOUT, SWISSEPH_API_TIMEOUT);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);

        $response = curl_exec($ch);
        $httpCode = (int) curl_getinfo($ch, CURLINFO_HTTP_CODE);
        $curlErr  = curl_error($ch);

        curl_close($ch);

        if ($response === false || $httpCode !== 200) {
            return [
                'success' => false,
                'error' => $curlErr ?: ('Remote API returned HTTP ' . $httpCode),
                'data' => []
            ];
        }
    } else {
        $context = stream_context_create([
            'http' => [
                'timeout' => SWISSEPH_API_TIMEOUT
            ]
        ]);

        $response = @file_get_contents($url, false, $context);

        if ($response === false) {
            return [
                'success' => false,
                'error' => 'Could not connect to remote Swiss Ephemeris API.',
                'data' => []
            ];
        }
    }

    $decoded = json_decode($response, true);

    if (!is_array($decoded)) {
        return [
            'success' => false,
            'error' => 'Invalid JSON received from remote API.',
            'data' => []
        ];
    }

    return [
        'success' => true,
        'error' => '',
        'data' => $decoded
    ];
}

function getRealPlanetaryData(
    string $date,
    string $time,
    float $latitude,
    float $longitude,
    string $timezone = 'Asia/Kathmandu'
): array {
    $remote = fetchRemoteSwissephResponse($date, $time, $latitude, $longitude, $timezone);

    if (!$remote['success']) {
        return [
            'planets' => [],
            'ascendant' => null,
            'error' => $remote['error']
        ];
    }

    $data = $remote['data'];
    $results = [];

    if (isset($data['planets']) && is_array($data['planets'])) {
        foreach ($data['planets'] as $planet) {
            if (!is_array($planet) || !isset($planet['key']) || !isset($planet['longitude'])) {
                continue;
            }

            if (!in_array($planet['key'], PLANET_KEYS, true)) {
                continue;
            }

            $results[] = [
                'key' => $planet['key'],
                'longitude' => normalizeLongitude((float)$planet['longitude'])
            ];
        }
    }

    return [
        'planets' => $results,
        'ascendant' => isset($data['ascendant']) ? (float)$data['ascendant'] : null,
        'error' => ''
    ];
}