import 'package:flutter/material.dart';
import 'dart:io';
import 'pdf_generator.dart';

class PdfTest {
  static Future<void> testPdfGeneration(BuildContext context) async {
    try {
      // Show loading indicator
      showDialog(
        context: context,
        barrierDismissible: false,
        builder: (context) => const Center(
          child: CircularProgressIndicator(),
        ),
      );

      // Create test data
      final testData = {
        'productivity': 5.5,
        'cost': 5000000.0,
        'income': 8000000.0,
        'profit': 3000000.0,
        'profit_margin': 60.0,
        'status': 'Baik',
        'seed_cost': 1000000.0,
        'fertilizer_cost': 1500000.0,
        'pesticide_cost': 800000.0,
        'labor_cost': 1200000.0,
        'irrigation_cost': 500000.0,
        'crop_name': 'Padi Test',
      };

      // Generate PDF
      final pdfGenerator = HarvestPdfGenerator();
      final pdfFile = await pdfGenerator.generatePdf(
        title: 'Test PDF',
        harvestData: testData,
        scheduleData: null,
        dailyLogs: null,
      );

      // Close loading dialog
      if (!context.mounted) return;
      Navigator.pop(context);

      // Show success dialog
      showDialog(
        context: context,
        builder: (context) => AlertDialog(
          title: const Text('PDF Berhasil Dibuat'),
          content: SingleChildScrollView(
            child: Column(
              mainAxisSize: MainAxisSize.min,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                const Text('PDF disimpan di:'),
                const SizedBox(height: 8),
                Text(
                  pdfFile.path,
                  style: const TextStyle(fontWeight: FontWeight.bold),
                ),
                const SizedBox(height: 16),
                const Text(
                  'Catatan: PDF disimpan di direktori internal aplikasi yang tidak memerlukan izin khusus.',
                  style: TextStyle(fontSize: 12, fontStyle: FontStyle.italic),
                ),
              ],
            ),
          ),
          actions: [
            TextButton(
              onPressed: () {
                Navigator.pop(context);
              },
              child: const Text('Tutup'),
            ),
            TextButton(
              onPressed: () {
                Navigator.pop(context);
                _sharePdf(context, pdfFile);
              },
              child: const Text('Bagikan'),
            ),
            TextButton(
              onPressed: () {
                Navigator.pop(context);
                _openPdf(context, pdfFile);
              },
              child: const Text('Buka'),
            ),
          ],
        ),
      );
    } catch (e, stackTrace) {
      // Close loading dialog if open
      if (!context.mounted) return;
      Navigator.pop(context);
      
      // Show detailed error
      showDialog(
        context: context,
        builder: (context) => AlertDialog(
          title: const Text('Error'),
          content: SingleChildScrollView(
            child: Column(
              mainAxisSize: MainAxisSize.min,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                const Text('Gagal membuat PDF:'),
                const SizedBox(height: 8),
                Text(e.toString(), style: const TextStyle(fontWeight: FontWeight.bold)),
                const SizedBox(height: 16),
                const Text('Stack Trace:', style: TextStyle(fontWeight: FontWeight.bold)),
                Text(stackTrace.toString(), style: const TextStyle(fontSize: 12)),
              ],
            ),
          ),
          actions: [
            TextButton(
              onPressed: () => Navigator.pop(context),
              child: const Text('OK'),
            ),
          ],
        ),
      );
    }
  }

  static Future<void> _openPdf(BuildContext context, File file) async {
    try {
      final pdfGenerator = HarvestPdfGenerator();
      await pdfGenerator.openPdf(file);
    } catch (e) {
      // If opening fails, show a dialog with options
      if (!context.mounted) return;
      
      showDialog(
        context: context,
        builder: (context) => AlertDialog(
          title: const Text('Gagal Membuka PDF'),
          content: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              const Text(
                'Tidak dapat membuka file PDF secara langsung. '
                'Silakan bagikan file untuk dibuka dengan aplikasi lain.'
              ),
              const SizedBox(height: 8),
              Text(
                'Error: ${e.toString()}',
                style: const TextStyle(fontSize: 12, color: Colors.red),
              ),
            ],
          ),
          actions: [
            TextButton(
              onPressed: () => Navigator.pop(context),
              child: const Text('Tutup'),
            ),
            TextButton(
              onPressed: () {
                Navigator.pop(context);
                _sharePdf(context, file);
              },
              child: const Text('Bagikan'),
            ),
          ],
        ),
      );
    }
  }

  static Future<void> _sharePdf(BuildContext context, File file) async {
    try {
      final pdfGenerator = HarvestPdfGenerator();
      await pdfGenerator.sharePdf(file);
    } catch (e) {
      if (!context.mounted) return;
      
      showDialog(
        context: context,
        builder: (context) => AlertDialog(
          title: const Text('Error'),
          content: Text('Gagal membagikan PDF: ${e.toString()}'),
          actions: [
            TextButton(
              onPressed: () => Navigator.pop(context),
              child: const Text('OK'),
            ),
          ],
        ),
      );
    }
  }
}