<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Illuminate\Support\Facades\Http;
use Throwable;

class ControlTowerPollCommand extends Command
{
    protected $signature = 'netgescon:control-tower-poll
        {--tower= : URL base della Torre di Controllo}
        {--machine= : ID macchina}
        {--token=pending-205 : Token di autenticazione}
        {--task-id= : ID task specifico da eseguire}
        {--wrapper-script= : Percorso personalizzato per lo script wrapper agy}
        {--dry-run : Esegue in modalita simulazione senza invocare agy o pubblicare report}';

    protected $description = 'Polls Control Tower for tasks, executes prompt via wrapper script stdin, parses wrapper JSON output, publishes reports, and marks tasks as done.';

    public function handle(): int
    {
        $envVars = $this->loadMachineEnv();
        $towerBase = rtrim((string) ($this->option('tower') ?: ($envVars['TOWER_BASE'] ?? 'http://192.168.0.53:4174')), '/');
        $machineId = (string) ($this->option('machine') ?: ($envVars['MACHINE_ID'] ?? 'machine-205-dev'));
        $token     = (string) ($this->option('token') !== 'pending-205' ? $this->option('token') : ($envVars['MACHINE_TOKEN'] ?? 'pending-205'));
        $taskIdOpt = $this->option('task-id');
        $dryRun    = (bool) $this->option('dry-run');

        $this->info("🤖 Control Tower Poller (.205) -> {$towerBase}");

        $task = null;
        if ($taskIdOpt) {
            $task = $this->fetchTaskById($towerBase, $taskIdOpt, $machineId, $token);
            if (! $task) {
                $this->error("❌ RECUPERO TASK REALE FALLITO: Task {$taskIdOpt} non trovato o errore HTTP. Nessun fallback sintetico ammesso.");
                return self::FAILURE;
            }
        } else {
            $task = $this->fetchNextTask($towerBase, $machineId, $token);
            if (! $task) {
                $this->warn('Nessun task in coda. Recupero task corrente dal pacchetto runtime...');
                $task = $this->fetchCurrentTaskFromPacket($towerBase, $machineId, $token);
            }
        }

        if (! $task || ! is_array($task)) {
            $this->error('❌ TASK NON VALIDO O MANCANTE.');
            return self::FAILURE;
        }

        $taskId = $task['id'] ?? null;
        if (! $taskId) {
            $this->error('❌ TASK NON VALIDO: Campo id mancante.');
            return self::FAILURE;
        }

        if ($taskIdOpt && $taskId !== $taskIdOpt) {
            $this->error("❌ DISALLINEAMENTO TASK_ID: ID restituito '{$taskId}' non coincide con ID richiesto '{$taskIdOpt}'.");
            return self::FAILURE;
        }

        $assignedMachine = $task['target_machine_id'] ?? $task['assigned_machine_id'] ?? $task['machine_id'] ?? null;
        if ($assignedMachine !== null && $assignedMachine !== $machineId && $assignedMachine !== 'machine-205-dev') {
            $this->error("❌ MACCHINA DISALLINEATA: Task {$taskId} e assegnato a '{$assignedMachine}', non a '{$machineId}'.");
            return self::FAILURE;
        }

        $title = $task['title'] ?? null;
        $desc  = $task['description'] ?? null;
        $meta  = $task['metadata'] ?? null;

        if ($title === null || $desc === null || $meta === null) {
            $this->error("❌ TASK INCOMPLETO: title, description o metadata mancanti per task {$taskId}.");
            return self::FAILURE;
        }

        if (isset($task['status']) && in_array($task['status'], ['done', 'blocked'], true)) {
            $this->info("ℹ️ Task {$taskId} e gia in stato '{$task['status']}'. Esecuzione ignorata (idempotenza).");
            return self::SUCCESS;
        }

        $this->line("📋 Task ID: <comment>{$taskId}</comment>");
        $this->line("📝 Titolo:  <comment>{$title}</comment>");

        $currentBranch = trim(shell_exec('git rev-parse --abbrev-ref HEAD 2>/dev/null') ?: 'stabilization/205-zero');
        $currentCommit = trim(shell_exec('git rev-parse HEAD 2>/dev/null') ?: '');

        if ($dryRun) {
            $this->info('🧪 DRY RUN ATTIVO: simulazione completata senza inviare report.');
            return self::SUCCESS;
        }

        $expectedReport = is_array($meta) ? ($meta['expectedReport'] ?? $meta['expected_report'] ?? null) : null;

        $promptParts = [
            "TASK_ID: {$taskId}",
            "TITOLO: {$title}",
            "DESCRIZIONE:\n{$desc}",
            "METADATA:\n" . (is_array($meta) ? json_encode($meta, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) : $meta),
        ];

        if ($expectedReport !== null) {
            $promptParts[] = "EXPECTED_REPORT:\n" . (is_array($expectedReport) || is_object($expectedReport) ? json_encode($expectedReport, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) : $expectedReport);
        }

        $promptInput = implode("\n\n", $promptParts);

        $defaultWrapperScript = '/home/michele/netgescon-day0-backup/scripts/ops/antigravity-cli/run_205_followup_via_agy.sh';
        $wrapperScript = (string) ($this->option('wrapper-script') ?: $defaultWrapperScript);

        if (! file_exists($wrapperScript)) {
            $this->error("❌ Script wrapper non trovato: {$wrapperScript}");
            return self::FAILURE;
        }

        $descriptors = [
            0 => ['pipe', 'r'],
            1 => ['pipe', 'w'],
            2 => ['pipe', 'w'],
        ];

        $env = [
            'HOME'     => getenv('HOME') ?: '/home/michele',
            'USER'     => getenv('USER') ?: 'michele',
            'LOGNAME'  => getenv('LOGNAME') ?: 'michele',
            'PATH'     => '/home/michele/.local/bin:/usr/local/bin:/usr/bin:/bin',
            'AGY_MODE' => 'plan',
        ];

        $process = proc_open($wrapperScript, $descriptors, $pipes, base_path(''), $env);
        if (! is_resource($process)) {
            $this->error('❌ Impossibile avviare lo script wrapper agy.');
            return self::FAILURE;
        }

        fwrite($pipes[0], $promptInput);
        fclose($pipes[0]);

        $stdout = stream_get_contents($pipes[1]);
        fclose($pipes[1]);

        $stderr = stream_get_contents($pipes[2]);
        fclose($pipes[2]);

        $exitCode = proc_close($process);

        $stdinLength = strlen($promptInput);
        $envKeys = implode(', ', array_keys($env));

        if ($exitCode !== 0) {
            $this->error('❌ WRAPPER AGY FALLITO');
            $this->line("WRAPPER_PATH: {$wrapperScript}");
            $this->line("STDIN_LENGTH: {$stdinLength}");
            $this->line("ENV_KEYS: {$envKeys}");
            $this->line("EXIT_CODE: {$exitCode}");
            $this->line('STDOUT:');
            if ($stdout !== '') {
                $this->line(trim($stdout));
            }
            $this->line('STDERR:');
            if ($stderr !== '') {
                $this->line(trim($stderr));
            }
            return self::FAILURE;
        }

        $jsonResult = json_decode($stdout, true);
        if (! is_array($jsonResult)) {
            $this->error("❌ OUTPUT WRAPPER NON VALIDO: Impossibile decodificare JSON: {$stdout}");
            return self::FAILURE;
        }

        if (! isset($jsonResult['ok']) || $jsonResult['ok'] !== true) {
            $missingFields = implode(', ', $jsonResult['missing'] ?? []);
            $this->error("❌ WRAPPER PARSER NON VALIDO (ok != true). Campi mancanti: {$missingFields}");
            return self::FAILURE;
        }

        $parsed = $jsonResult['parsed'] ?? [];
        if (! is_array($parsed)) {
            $this->error("❌ WRAPPER PARSER NON VALIDO: 'parsed' mancante o non array.");
            return self::FAILURE;
        }

        $parsedTaskId = $parsed['task_id'] ?? null;
        if ($parsedTaskId !== $taskId) {
            $this->error("❌ DISALLINEAMENTO TASK_ID: task_id parsed '{$parsedTaskId}' non coincide con task corrente '{$taskId}'. Report non pubblicato.");
            return self::FAILURE;
        }

        $rawOutput = $parsed['raw_text'] ?? json_encode($parsed, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);

        if (($parsed['esito_205'] ?? '') === 'bloccato' || ($parsed['blocco_contratto'] ?? 'no') === 'si') {
            $this->error("❌ TASK BLOCCATO: Esito bloccato indicato nel report parsed.");
            $this->publishReport($towerBase, $machineId, $token, $taskId, $rawOutput, $parsed, $currentBranch, $currentCommit);
            $this->updateTaskStatus($towerBase, $machineId, $token, $taskId, 'blocked');
            return self::FAILURE;
        }

        $reportRes = $this->publishReport($towerBase, $machineId, $token, $taskId, $rawOutput, $parsed, $currentBranch, $currentCommit);

        if (! $reportRes['success']) {
            $this->error("❌ IMPOSSIBILE CHIUDERE IL TASK: POST /api/reports non ha restituito HTTP 201 (Status Code: {$reportRes['status']}). Task {$taskId} NON aggiornato a done.");
            return self::FAILURE;
        }

        $reportId = $reportRes['id'];

        $this->updateTaskStatus($towerBase, $machineId, $token, $taskId, 'done');

        $commandId = $task['command_id'] ?? ($task['metadata']['commandId'] ?? null);
        if ($commandId) {
            $this->updateCommandStatus($towerBase, $machineId, $token, $commandId, 'done');
        }

        $this->sendHeartbeat($towerBase, $machineId, $token, $taskId);

        $this->info("✅ Task {$taskId} completato con successo: Report {$reportId} (HTTP 201) registrato e stato aggiornato a 'done'.");
        return self::SUCCESS;
    }

    private function loadMachineEnv(): array
    {
        $home = getenv('HOME') ?: '/home/michele';
        $path = rtrim($home, '/') . '/.nettower/etc/machine.env';
        if (! file_exists($path)) {
            return [];
        }

        $vars = [];
        $lines = file($path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
        foreach ($lines as $line) {
            $line = trim($line);
            if ($line !== '' && ! str_starts_with($line, '#') && str_contains($line, '=')) {
                [$k, $v] = explode('=', $line, 2);
                $vars[trim($k)] = trim(trim($v), '"\'');
            }
        }
        return $vars;
    }

    private function fetchTaskById(string $towerBase, string $taskId, string $machineId, string $token): ?array
    {
        try {
            $response = Http::timeout(10)->get("{$towerBase}/api/tasks/{$taskId}", [
                'machine_id' => $machineId,
                'token'      => $token,
            ]);
            if ($response->successful()) {
                $data = $response->json();
                return $data['task'] ?? ($data['id'] ?? null ? $data : null);
            } else {
                $this->error("❌ HTTP {$response->status()} durante il recupero del task {$taskId}");
            }
        } catch (Throwable $e) {
            $this->error("❌ Errore eccezione recupero task {$taskId}: {$e->getMessage()}");
        }
        return null;
    }

    private function fetchNextTask(string $towerBase, string $machineId, string $token): ?array
    {
        try {
            $response = Http::timeout(10)->get("{$towerBase}/api/tasks/next", [
                'machine_id' => $machineId,
                'token'      => $token,
            ]);
            if ($response->successful()) {
                $data = $response->json();
                return $data['task'] ?? ($data['id'] ?? null ? $data : null);
            }
        } catch (Throwable $e) {
            $this->warn("Impossibile contattare /api/tasks/next: {$e->getMessage()}");
        }
        return null;
    }

    private function fetchCurrentTaskFromPacket(string $towerBase, string $machineId, string $token): ?array
    {
        try {
            $response = Http::timeout(10)->get("{$towerBase}/api/machines/{$machineId}/runtime-packet", [
                'token' => $token,
            ]);
            if ($response->successful()) {
                $data = $response->json();
                return $data['task'] ?? null;
            }
        } catch (Throwable $e) {
            $this->warn("Impossibile recuperare runtime-packet: {$e->getMessage()}");
        }
        return null;
    }

    private function publishReport(
        string $towerBase,
        string $machineId,
        string $token,
        string $taskId,
        string $rawOutput,
        array $parsed,
        string $branch,
        string $commit
    ): array {
        try {
            $response = Http::timeout(10)->post("{$towerBase}/api/reports", [
                'machine_id'  => $machineId,
                'token'       => $token,
                'task_id'     => $taskId,
                'report_type' => 'execution-report',
                'raw_text'    => $rawOutput,
                'parsed'      => $parsed,
            ]);

            $status = $response->status();

            if ($status === 201 || $response->successful()) {
                $reportId = (string) ($response->json('id') ?? 'N/A');
                $this->info("✔️ Report inviato alla Torre di Controllo (HTTP {$status}, Report ID: {$reportId})");
                return ['success' => true, 'status' => $status, 'id' => $reportId];
            } else {
                $this->warn("Risposta non 201 dall'API report: HTTP {$status} - " . substr(trim($response->body()), 0, 300));
                return ['success' => false, 'status' => $status, 'id' => 'N/A'];
            }
        } catch (Throwable $e) {
            $this->error("Errore eccezione invio report: {$e->getMessage()}");
            return ['success' => false, 'status' => 500, 'id' => 'N/A'];
        }
    }

    private function updateTaskStatus(string $towerBase, string $machineId, string $token, string $taskId, string $status = 'done'): void
    {
        try {
            $response = Http::timeout(10)->post("{$towerBase}/api/tasks/status", [
                'task_id'       => $taskId,
                'status'        => $status,
                'machine_id'    => $machineId,
                'token'         => $token,
                'progress_note' => "Task {$taskId} completato e report registrato con successo",
            ]);

            if ($response->successful()) {
                $this->info("✔️ Stato task {$taskId} aggiornato a '{$status}' su Torre di Controllo.");
            } else {
                $this->warn("Risposta non 20x aggiornamento stato task: HTTP " . $response->status());
            }
        } catch (Throwable $e) {
            $this->error("Errore aggiornamento stato task: {$e->getMessage()}");
        }
    }

    private function updateCommandStatus(string $towerBase, string $machineId, string $token, string $commandId, string $status = 'done'): void
    {
        try {
            $response = Http::timeout(10)->post("{$towerBase}/api/commands/status", [
                'command_id'    => $commandId,
                'status'        => $status,
                'machine_id'    => $machineId,
                'token'         => $token,
                'progress_note' => "Command {$commandId} completato da netgescon:control-tower-poll",
            ]);

            if ($response->successful()) {
                $this->info("✔️ Stato command {$commandId} aggiornato a '{$status}' su Torre di Controllo.");
            } else {
                $this->warn("Risposta non 20x aggiornamento stato command: HTTP " . $response->status());
            }
        } catch (Throwable $e) {
            $this->error("Errore aggiornamento stato command: {$e->getMessage()}");
        }
    }

    private function sendHeartbeat(string $towerBase, string $machineId, string $token, string $taskId): void
    {
        try {
            Http::timeout(10)->post("{$towerBase}/api/machines/heartbeat", [
                'machine_id'    => $machineId,
                'token'         => $token,
                'status'        => 'online',
                'progress_note' => "Task {$taskId} elaborato da netgescon:control-tower-poll",
            ]);
        } catch (Throwable $e) {
            // silent heartbeat catch
        }
    }
}