<?php

declare(strict_types=1);

// Execute only in Lihrenmoos Symcon. Installs confirmed reads and accepted virtual_split mapping; never starts a trial.
if (!function_exists('IPS_GetKernelVersion')) {
    throw new RuntimeException('Nur im IP-Symcon-Skripteditor ausfuehren.');
}
require_once __DIR__ . '/file_installer.php';

$manager = 17004;
$battery = 44234;
$locked = false;
$changedMapping = false;
$oldMapping = null;
$report = [
    'scope' => 'confirmed_feedback_trial_disabled',
    'startedAt' => gmdate('c'),
    'actuatorPermissionGranted' => false,
    'serverUpdateRequired' => true,
    'acceptedModel' => 'virtual_split',
];

try {
    $hashes = json_decode((string) file_get_contents(__DIR__ . '/PACKAGE_HASHES.json'), true, 32, JSON_THROW_ON_ERROR);
    foreach ($hashes as $name => $hash) {
        if (str_contains($name, '..') || str_starts_with($name, '/') || is_link(__DIR__ . '/' . $name)
            || hash_file('sha256', __DIR__ . '/' . $name) !== $hash) {
            throw new RuntimeException('Vorbereitetes Paket veraendert.');
        }
    }
    foreach ([
        $manager => '{6F771B18-59D4-4C8A-B951-3B2FE9F6A2C4}',
        $battery => '{437FB683-517F-4FEC-8CCB-FE6B0A62B69E}',
    ] as $id => $module) {
        if (!IPS_InstanceExists($id) || IPS_GetInstance($id)['ModuleInfo']['ModuleID'] !== $module) {
            throw new RuntimeException('Modulzuordnung ungueltig.');
        }
        if (IPS_HasChanges($id)) {
            throw new RuntimeException('Offene Aenderungen zuerst speichern oder verwerfen.');
        }
    }

    $beforeManager = json_decode(IPS_GetConfiguration($manager), true, 128, JSON_THROW_ON_ERROR);
    $beforeBattery = json_decode(IPS_GetConfiguration($battery), true, 128, JSON_THROW_ON_ERROR);
    if (($beforeManager['NetzfahrplanAktiv'] ?? null) !== false
        || ($beforeManager['NetzfahrplanV4RegeltestErlaubt'] ?? false) !== false
        || ($beforeBattery['NetzfahrplanV4RegeltestErlaubt'] ?? false) !== false) {
        throw new RuntimeException('Alte Fahrplanausgabe und beide Regeltestfreigaben muessen AUS bleiben.');
    }

    $configuration = json_decode((string) file_get_contents(__DIR__ . '/feedback-config.json'), true, 32, JSON_THROW_ON_ERROR);
    $manifest = json_decode((string) file_get_contents(__DIR__ . '/MANIFEST.json'), true, 32, JSON_THROW_ON_ERROR);
    if (($configuration['managerId'] ?? null) !== $manager
        || ($configuration['batteryInstanceId'] ?? null) !== $battery
        || ($configuration['mode'] ?? null) !== 'virtual_split'
        || ($configuration['allowEstimatedForTrial'] ?? null) !== true
        || hash_file('sha256', __DIR__ . '/feedback-config.json') !== $manifest['configurationSha256']) {
        throw new RuntimeException('Falsche Rueckmeldekonfiguration.');
    }
    $desired = json_encode($configuration, JSON_THROW_ON_ERROR | JSON_PRESERVE_ZERO_FRACTION);
    $previousConfiguration = $configuration;
    $previousConfiguration['allowEstimatedForTrial'] = false;
    $previousDesired = json_encode($previousConfiguration, JSON_THROW_ON_ERROR | JSON_PRESERVE_ZERO_FRACTION);
    $oldMapping = $beforeBattery['NetzfahrplanV4RueckmeldungKonfiguration'] ?? '{}';
    if (!in_array($oldMapping, [$previousDesired, $desired], true)) {
        throw new RuntimeException('Abweichende Rueckmeldekonfiguration nicht ueberschrieben.');
    }

    $controls = [];
    foreach (IPS_GetModuleList() as $module) {
        if ((IPS_GetModule($module)['Prefix'] ?? '') === 'MC') {
            $controls = array_merge($controls, IPS_GetInstanceListByModuleID($module));
        }
    }
    if (count($controls) !== 1 || !function_exists('MC_ReloadModule')) {
        throw new RuntimeException('Module Control nicht eindeutig.');
    }
    $locked = IPS_SemaphoreEnter('ENELIX.V4.ConfirmedFeedbackInstall', 3000);
    if (!$locked) {
        throw new RuntimeException('Installation bereits aktiv.');
    }

    $report['files'] = v4ConfirmedFiles(__DIR__, '/var/lib/symcon/modules/Enelix-EMS');
    if (MC_ReloadModule($controls[0], 'Enelix-EMS') === false) {
        throw new RuntimeException('Bibliotheks-Reload fehlgeschlagen.');
    }

    $afterManager = json_decode(IPS_GetConfiguration($manager), true, 128, JSON_THROW_ON_ERROR);
    $afterBattery = json_decode(IPS_GetConfiguration($battery), true, 128, JSON_THROW_ON_ERROR);
    foreach ([[$beforeManager, $afterManager], [$beforeBattery, $afterBattery]] as $pair) {
        foreach ($pair[0] as $key => $value) {
            if (!array_key_exists($key, $pair[1]) || $pair[1][$key] !== $value) {
                throw new RuntimeException('Bestehender Parameter beim Reload veraendert: ' . $key);
            }
        }
    }

    if (!function_exists('ENELIX_GetV4BatterieRueckmeldung')) {
        $report['status'] = 'waiting_for_registration';
        echo "Dateien installiert. Modulregistrierung wird abgeschlossen; diesen Aufruf einmal wiederholen. Keine Stellfreigabe.\n";
    } else {
        if ($afterBattery['NetzfahrplanV4RueckmeldungKonfiguration'] !== $desired) {
            IPS_SetProperty($battery, 'NetzfahrplanV4RueckmeldungKonfiguration', $desired);
            $changedMapping = true;
            IPS_ApplyChanges($battery);
        }
        $finalManager = json_decode(IPS_GetConfiguration($manager), true, 128, JSON_THROW_ON_ERROR);
        $finalBattery = json_decode(IPS_GetConfiguration($battery), true, 128, JSON_THROW_ON_ERROR);
        foreach ([[$beforeManager, $finalManager], [$beforeBattery, $finalBattery]] as $pair) {
            foreach ($pair[0] as $key => $value) {
                if ($key !== 'NetzfahrplanV4RueckmeldungKonfiguration'
                    && (!array_key_exists($key, $pair[1]) || $pair[1][$key] !== $value)) {
                    throw new RuntimeException('Bestehender Parameter unerwartet veraendert: ' . $key);
                }
            }
        }
        if (($finalManager['NetzfahrplanAktiv'] ?? null) !== false
            || ($finalManager['NetzfahrplanV4RegeltestErlaubt'] ?? null) !== false
            || ($finalBattery['NetzfahrplanV4RegeltestErlaubt'] ?? null) !== false) {
            throw new RuntimeException('Unerwartete Stellfreigabe nach Installation.');
        }

        $feedback = json_decode(ENELIX_GetV4BatterieRueckmeldung($battery), true, 32, JSON_THROW_ON_ERROR);
        $report['feedback'] = array_intersect_key($feedback, array_flip([
            'status', 'kind', 'method', 'reason', 'reasons', 'estimated', 'batteryW', 'gridW',
            'sourceOldestAt', 'sourceVariableOldestAt', 'confirmedAt', 'checkedAt', 'configHash',
            'deviceReadConfirmed', 'usableForTrial', 'canDispatch',
        ]));
        $report['status'] = 'confirmed_feedback_installed_trial_disabled';
        $report['originalParametersPreserved'] = true;
        echo "OK: Geraeteabfrage bestaetigt die physischen Messwerte; virtual_split ist fuer den begrenzten Regeltest akzeptiert.\n";
        echo 'Rueckmeldung: ' . ($feedback['status'] ?? 'available')
            . '; Geraeteabfrage: ' . (($feedback['deviceReadConfirmed'] ?? false) ? 'bestaetigt' : 'nicht bestaetigt')
            . '; Modellanteil: ' . (($feedback['estimated'] ?? false) ? 'ja' : 'nein') . ".\n";
        if (isset($feedback['reason'])) {
            echo 'Aktueller Hinweis: ' . $feedback['reason'] . "\n";
        }
        echo "Beide Regeltestfreigaben AUS. Kein Stellbefehl ohne separat nachgewiesenen Geraete-Watchdog und Serverfreigabe.\n";
    }
} catch (Throwable $error) {
    $report['status'] = 'needs_review';
    $report['reason'] = substr($error->getMessage(), 0, 260);
    if ($changedMapping && $oldMapping !== null) {
        try {
            IPS_SetProperty($battery, 'NetzfahrplanV4RueckmeldungKonfiguration', $oldMapping);
            IPS_ApplyChanges($battery);
            $report['mappingRestored'] = true;
        } catch (Throwable $ignored) {
            $report['mappingRestored'] = false;
        }
    }
    echo 'FEHLER: ' . $report['reason'] . "\nKeine V4-Stellfreigabe erteilt.\n";
} finally {
    $report['finishedAt'] = gmdate('c');
    v4ConfirmedWrite(__DIR__ . '/INSTALL_RESULT.json', json_encode($report, JSON_THROW_ON_ERROR | JSON_PRETTY_PRINT) . "\n", 0644);
    if ($locked) {
        IPS_SemaphoreLeave('ENELIX.V4.ConfirmedFeedbackInstall');
    }
    echo 'CONFIRMED FEEDBACK INSTALL REPORT: ' . __DIR__ . "/INSTALL_RESULT.json\n";
}