<?php

require_once 'constants.php';

function getPlanetName(string $planetKey, string $mode = NAME_MODE_MODERN): string
{
    return PLANET_NAMES[$mode][$planetKey] ?? $planetKey;
}

function getPlanetShortName(string $planetKey): string
{
    return PLANET_SHORT_NAMES[$planetKey] ?? strtoupper(substr($planetKey, 0, 2));
}

function getSignName(string $signKey, string $mode = NAME_MODE_MODERN): string
{
    return SIGN_NAMES[$mode][$signKey] ?? $signKey;
}

function getNakshatraName(string $nakshatraKey, string $mode = NAME_MODE_MODERN): string
{
    return NAKSHATRA_NAMES[$mode][$nakshatraKey] ?? $nakshatraKey;
}

function getSignKeyByIndex(int $index): string
{
    return SIGN_KEYS[$index] ?? SIGN_KEYS[0];
}

function getNakshatraKeyByIndex(int $index): string
{
    return NAKSHATRA_KEYS[$index] ?? NAKSHATRA_KEYS[0];
}

function formatDegree(float $degree): string
{
    $deg = floor($degree);
    $minutesFloat = ($degree - $deg) * 60;
    $min = floor($minutesFloat);
    $sec = floor(($minutesFloat - $min) * 60);

    return $deg . ' deg ' . str_pad((string)$min, 2, '0', STR_PAD_LEFT) . "' " .
           str_pad((string)$sec, 2, '0', STR_PAD_LEFT) . '"';
}

function normalizeLongitude(float $longitude): float
{
    $result = fmod($longitude, 360);
    if ($result < 0) {
        $result += 360;
    }
    return $result;
}

function getSignIndexFromLongitude(float $longitude): int
{
    $longitude = normalizeLongitude($longitude);
    return (int) floor($longitude / 30);
}

function getSignKeyFromLongitude(float $longitude): string
{
    $signIndex = getSignIndexFromLongitude($longitude);
    return getSignKeyByIndex($signIndex);
}

function getDegreeWithinSign(float $longitude): float
{
    $longitude = normalizeLongitude($longitude);
    return fmod($longitude, 30);
}

function getNakshatraIndexFromLongitude(float $longitude): int
{
    $longitude = normalizeLongitude($longitude);
    $nakshatraSize = 360 / 27;
    return (int) floor($longitude / $nakshatraSize);
}

function getNakshatraKeyFromLongitude(float $longitude): string
{
    $nakshatraIndex = getNakshatraIndexFromLongitude($longitude);
    return getNakshatraKeyByIndex($nakshatraIndex);
}

function buildPlanetDataFromLongitude(
    string $planetKey,
    float $longitude,
    string $mode = NAME_MODE_MODERN
): array {
    $normalizedLongitude = normalizeLongitude($longitude);
    $signKey = getSignKeyFromLongitude($normalizedLongitude);
    $nakshatraKey = getNakshatraKeyFromLongitude($normalizedLongitude);
    $degreeWithinSign = getDegreeWithinSign($normalizedLongitude);
    $segment = getSegmentFromLongitude($normalizedLongitude);

    return [
        'key' => $planetKey,
        'name' => getPlanetName($planetKey, $mode),
        'short' => getPlanetShortName($planetKey),
        'house' => $segment,
        'longitude' => $normalizedLongitude,
        'sign_key' => $signKey,
        'sign' => getSignName($signKey, $mode),
        'degree_value' => $degreeWithinSign,
        'degree' => formatDegree($degreeWithinSign),
        'nakshatra_key' => $nakshatraKey,
        'nakshatra' => getNakshatraName($nakshatraKey, $mode)
    ];
}

function sortPlanetsByLongitude(array $planets): array
{
    usort($planets, function ($a, $b) {
        return ($a['longitude'] ?? 0) <=> ($b['longitude'] ?? 0);
    });

    return $planets;
}
function getSegmentFromLongitude(float $longitude): int
{
    $longitude = normalizeLongitude($longitude);
    return ((int) floor($longitude / 30)) + 1;
}