<?php
declare(strict_types=1);

function runPythonApi(string $action, array $args): array
{
    $scriptPath = __DIR__ . '/py/api.py';
    $pythonCandidates = PHP_OS_FAMILY === 'Windows'
        ? ['python', 'py']
        : ['/usr/bin/python3', '/usr/bin/python', 'python3', 'python'];

    $escapedArguments = array_map('escapeshellarg', array_merge([$scriptPath, $action], $args));
    $lastError = 'Python konnte nicht gestartet werden.';

    foreach ($pythonCandidates as $pythonBinary) {
        $command = $pythonBinary . ' ' . implode(' ', $escapedArguments) . ' 2>&1';
        $output = [];
        $resultCode = 0;
        exec($command, $output, $resultCode);

        $joined = trim(implode("\n", $output));
        $decoded = json_decode($joined, true);

        if (is_array($decoded)) {
            return [
                'ok' => (bool) ($decoded['ok'] ?? false),
                'data' => $decoded,
                'raw' => $joined,
                'command' => $command,
            ];
        }

        if ($joined !== '') {
            $lastError = $joined;
        } elseif ($resultCode !== 0) {
            $lastError = 'Fehlercode ' . $resultCode . ' bei ' . $pythonBinary;
        }
    }

    return [
        'ok' => false,
        'error' => $lastError,
    ];
}

function runPythonApiWithJsonPayloadFile(string $action, array $payload): array
{
    $tempFile = tempnam(sys_get_temp_dir(), 'skyview_py_');
    if ($tempFile === false) {
        return [
            'ok' => false,
            'error' => 'Temporäre Datei für Python-Payload konnte nicht erstellt werden.',
        ];
    }

    $jsonPayload = json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
    if ($jsonPayload === false) {
        @unlink($tempFile);
        return [
            'ok' => false,
            'error' => 'Python-Payload konnte nicht als JSON kodiert werden.',
        ];
    }

    if (file_put_contents($tempFile, $jsonPayload) === false) {
        @unlink($tempFile);
        return [
            'ok' => false,
            'error' => 'Temporäre Datei für Python-Payload konnte nicht geschrieben werden.',
        ];
    }

    try {
        return runPythonApi($action, ['@' . $tempFile]);
    } finally {
        @unlink($tempFile);
    }
}