<?php

namespace App\Http\Controllers\Settings;

use App\Http\Controllers\Controller;
use App\Livewire\Settings\XmlExchange;
use Illuminate\Http\Request;

class XmlExchangeUploadController extends Controller
{
    public function convertSqlToXml(Request $request)
    {
        $request->validate([
            'sqlDump' => ['required', 'file', 'max:256000'],
        ]);

        $file = $request->file('sqlDump');
        $ext = strtolower($file->getClientOriginalExtension());
        if (! in_array($ext, ['sql', 'txt'])) {
            return back()->withErrors(['sqlDump' => 'Il file deve essere .sql o .txt']);
        }

        $content = file_get_contents($file->getRealPath());
        if (! $content) {
            return back()->withErrors(['sqlDump' => 'File vuoto o non leggibile.']);
        }

        $exchange = app(XmlExchange::class);
        $dataset = $exchange->legacySqlToDatasetPublic($content);
        $xml = $exchange->datasetToXmlPublic($dataset, 'legacy-sql-conversion');

        return response()->streamDownload(function () use ($xml) {
            echo $xml;
        }, 'termanager-conversion.xml', ['Content-Type' => 'application/xml; charset=UTF-8']);
    }

    public function importXml(Request $request)
    {
        $request->validate([
            'xmlImport' => ['required', 'file', 'max:256000'],
        ]);

        $file = $request->file('xmlImport');
        $ext = strtolower($file->getClientOriginalExtension());
        if (! in_array($ext, ['xml', 'txt'])) {
            return back()->withErrors(['xmlImport' => 'Il file deve essere .xml o .txt']);
        }

        $content = file_get_contents($file->getRealPath());
        if (! $content) {
            return back()->withErrors(['xmlImport' => 'File vuoto o non leggibile.']);
        }

        $exchange = new XmlExchange();
        $result = $exchange->importXmlFromContent($content);

        if (isset($result['error'])) {
            return back()->withErrors(['xmlImport' => $result['error']]);
        }

        $stats = $result['stats'];
        $issues = $result['issues'];

        $message = 'Import XML completato con successo.';
        if (($stats['duplicate_territori'] ?? 0) > 0 || ($stats['assegnazioni_saltate'] ?? 0) > 0) {
            $message .= ' Territori duplicati saltati: ' . $stats['duplicate_territori'] . '. Assegnazioni saltate: ' . $stats['assegnazioni_saltate'] . '.';
        }

        return redirect()->route('xml.exchange')
            ->with('success', $message)
            ->with('importStats', $stats)
            ->with('importIssues', $issues);
    }
}