import 'package:flutter/material.dart';
import 'package:pdfx/pdfx.dart';
import 'package:sheetless/api.dart';
import 'package:sheetless/sheet.dart';

class SheetViewerPage extends StatefulWidget {
  final Sheet sheet;
  final ApiClient apiClient;

  const SheetViewerPage(
      {super.key, required this.sheet, required this.apiClient});

  @override
  State<SheetViewerPage> createState() => _SheetViewerPageState();
}

class _SheetViewerPageState extends State<SheetViewerPage> {
  @override
  void initState() {
    super.initState();
  }

  Future<PdfController> loadPdf() async {
    var file = await widget.apiClient.getPdfFileCached(widget.sheet.uuid);
    if (file == null) {
      throw Exception("Failed fetching pdf file");
    }

    return PdfController(document: PdfDocument.openFile(file.path));
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.sheet.name),
      ),
      body: FutureBuilder(
          future: loadPdf(),
          builder:
              (BuildContext context, AsyncSnapshot<PdfController> snapshot) {
            if (snapshot.hasData) {
              return PdfView(
                controller: snapshot.data!,
                pageSnapping: false,
                scrollDirection: Axis.vertical,
              );
            } else if (snapshot.hasError) {
              return Center(
                  child: Text(
                      style: Theme.of(context)
                          .textTheme
                          .displaySmall!
                          .copyWith(color: Colors.red),
                      textAlign: TextAlign.center,
                      snapshot.error.toString()));
            } else {
              return const Center(child: CircularProgressIndicator());
            }
          }),
    );
  }
}