<?php

namespace App\Services\GesconImport;

class ImportProgressLogger
{
    private string $baseDir;
    private string $logDir;
    private string $key;

    public function __construct(?string $baseDir = null)
    {
        $this->baseDir = $baseDir ?: '/home/michele/netgescon/docs/logs';
        $this->logDir = rtrim($this->baseDir, DIRECTORY_SEPARATOR);
        if (!is_dir($this->logDir)) {
            @mkdir($this->logDir, 0775, true);
        }
        $this->key = '';
    }

    public function begin(string $task, array $context = []): string
    {
        $this->key = $this->makeKey($task, $context);
        $this->writeState('started', $context);
        $this->appendJsonl(['event' => 'begin', 'context' => $context]);
        return $this->key;
    }

    public function checkpoint(string $step, array $data = []): void
    {
        $this->appendJsonl(['event' => 'checkpoint', 'step' => $step, 'data' => $data]);
        $this->writeState('running', ['last_step' => $step, 'data' => $data]);
    }

    public function stdout(string $chunk): void
    {
        $this->appendText($chunk);
    }

    public function error(string $message, array $data = []): void
    {
        $this->appendJsonl(['event' => 'error', 'message' => $message, 'data' => $data]);
        $this->writeState('error', ['message' => $message] + $data);
    }

    public function finish(array $summary = []): void
    {
        $this->appendJsonl(['event' => 'finish', 'summary' => $summary]);
        $this->writeState('finished', $summary);
    }

    public function getStatePath(): string
    {
        return $this->filePath('state.json');
    }
    public function getLogPath(): string
    {
        return $this->filePath('progress.jsonl');
    }
    public function getStdoutPath(): string
    {
        return $this->filePath('stdout.log');
    }

    private function writeState(string $status, array $data): void
    {
        $payload = [
            'status' => $status,
            'updated_at' => date('c'),
            'task_key' => $this->key,
        ] + $data;
        @file_put_contents($this->getStatePath(), json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT));
    }

    private function appendJsonl(array $row): void
    {
        $row['ts'] = date('c');
        @file_put_contents($this->getLogPath(), json_encode($row, JSON_UNESCAPED_UNICODE) . "\n", FILE_APPEND);
    }

    private function appendText(string $text): void
    {
        @file_put_contents($this->getStdoutPath(), $text, FILE_APPEND);
    }

    private function filePath(string $name): string
    {
        $dir = $this->logDir . DIRECTORY_SEPARATOR . $this->key;
        if (!is_dir($dir)) @mkdir($dir, 0775, true);
        return $dir . DIRECTORY_SEPARATOR . $name;
    }

    private function makeKey(string $task, array $ctx): string
    {
        $parts = [
            'gescon',
            preg_replace('/[^a-z0-9_-]/i', '-', $task),
        ];
        foreach (['legacy_code', 'stabile_id', 'amministratore_id', 'anno', 'solo'] as $k) {
            if (isset($ctx[$k]) && $ctx[$k] !== null && $ctx[$k] !== '') {
                $parts[] = $k . '-' . preg_replace('/[^a-z0-9_-]/i', '-', (string)$ctx[$k]);
            }
        }
        $parts[] = date('Ymd-His');
        return implode('_', $parts);
    }
}