import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart' as pw;
import 'package:printing/printing.dart';
import '../splitter/splitter_provider.dart';
import '../calculator/calculator_provider.dart';

class PdfService {
  static Future<void> generateSplitterReport(
      double userTotal,
      List<FriendExpense> friends,
      List<String> settlements,
      List<HistoryItem> userHistory
      ) async {
    final pdf = pw.Document();

    // Font Google per risolvere il problema dei segni strani
    final font = await PdfGoogleFonts.robotoRegular();
    final fontBold = await PdfGoogleFonts.robotoBold();

    pdf.addPage(pw.Page(
      build: (pw.Context context) => pw.Column(
        crossAxisAlignment: pw.CrossAxisAlignment.start,
        children: [
          pw.Text("Report - Spese Dettagliate", style: pw.TextStyle(font: fontBold, fontSize: 20)),
          pw.SizedBox(height: 20),

          // Tabella Io (Tua cronologia esplosa)
          pw.Text("I TUOI ANTICIPI:", style: pw.TextStyle(font: fontBold, fontSize: 12)),
          pw.Table(
            border: pw.TableBorder.all(color: PdfColors.grey400, width: 0.5),
            children: [
              ...userHistory.map((item) => pw.TableRow(children: [
                pw.Padding(padding: const pw.EdgeInsets.all(5), child: pw.Text(item.note.isEmpty ? "Spesa" : item.note, style: pw.TextStyle(font: font))),
                pw.Padding(padding: const pw.EdgeInsets.all(5), child: pw.Text("${item.result} €", style: pw.TextStyle(font: font))),
              ])),
            ],
          ),

          pw.SizedBox(height: 20),

          // Tabella Amici (Inclusa nota)
          pw.Text("ANTICIPI ALTRI PARTECIPANTI:", style: pw.TextStyle(font: fontBold, fontSize: 12)),
          pw.Table(
            border: pw.TableBorder.all(color: PdfColors.grey400, width: 0.5),
            children: [
              ...friends.map((f) => pw.TableRow(children: [
                pw.Padding(padding: const pw.EdgeInsets.all(5), child: pw.Text(f.name, style: pw.TextStyle(font: font))),
                pw.Padding(padding: const pw.EdgeInsets.all(5), child: pw.Text(f.note.isEmpty ? "-" : f.note, style: pw.TextStyle(font: font))),
                pw.Padding(padding: const pw.EdgeInsets.all(5), child: pw.Text("${f.spent.toStringAsFixed(2)} €", style: pw.TextStyle(font: font))),
              ])),
            ],
          ),

          pw.SizedBox(height: 30),
          pw.Text("BILANCIO FINALE:", style: pw.TextStyle(font: fontBold, fontSize: 12)),
          pw.Divider(thickness: 0.5),
          ...settlements.map((s) => pw.Text(s, style: pw.TextStyle(font: font))),
        ],
      ),
    ));
    await Printing.layoutPdf(onLayout: (format) async => pdf.save());
  }
}