import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import '../../core/models/financial_table_entry.dart';

String _formatIndianCurrency(double amount) {
  // Convert to integer to avoid decimal places
  int intAmount = amount.round();
  
  // Format with Indian numbering system (commas every 2 digits after the first 3)
  String amountStr = intAmount.toString();
  String formatted = '';
  
  if (amountStr.length <= 3) {
    formatted = amountStr;
  } else {
    // For amounts > 999, use Indian comma system
    int remaining = amountStr.length;
    int start = 0;
    
    // First group (rightmost 3 digits)
    if (remaining > 3) {
      formatted = amountStr.substring(amountStr.length - 3);
      remaining -= 3;
      start = amountStr.length - 3;
    } else {
      formatted = amountStr;
      remaining = 0;
    }
    
    // Subsequent groups (2 digits each)
    while (remaining > 0) {
      int groupSize = remaining >= 2 ? 2 : remaining;
      int groupStart = start - groupSize;
      String group = amountStr.substring(groupStart, start);
      formatted = group + ',' + formatted;
      start = groupStart;
      remaining -= groupSize;
    }
  }
  
  return '₹$formatted';
}

class FinancialTable extends StatelessWidget {
  final List<FinancialTableEntry> entries;
  final bool isLoading;
  final VoidCallback? onRefresh;

  const FinancialTable({
    super.key,
    required this.entries,
    this.isLoading = false,
    this.onRefresh,
  });

  @override
  Widget build(BuildContext context) {
    return Card(
      elevation: 2,
      margin: EdgeInsets.symmetric(horizontal: 8.w, vertical: 4.h),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          // Header
          Container(
            padding: EdgeInsets.all(20.w),
            decoration: BoxDecoration(
              color: Colors.green.shade50,
              borderRadius: BorderRadius.only(
                topLeft: Radius.circular(8.r),
                topRight: Radius.circular(8.r),
              ),
            ),
            child: Row(
              children: [
                Icon(
                  Icons.table_chart,
                  color: Colors.green.shade700,
                  size: 28.w,
                ),
                SizedBox(width: 12.w),
                Expanded(
                  child: Text(
                    'Financial Summary',
                    style: TextStyle(
                      fontSize: 22.sp,
                      fontWeight: FontWeight.w600,
                      color: Colors.green.shade700,
                    ),
                  ),
                ),
                if (onRefresh != null)
                  Material(
                    color: Colors.transparent,
                    child: InkWell(
                      borderRadius: BorderRadius.circular(24.r),
                      onTap: onRefresh,
                      child: Padding(
                        padding: EdgeInsets.all(12.w),
                        child: Icon(
                          Icons.refresh,
                          size: 24.w,
                          color: Colors.green.shade700,
                        ),
                      ),
                    ),
                  ),
              ],
            ),
          ),
          
          // Table
          if (isLoading)
            Container(
              height: 200.h,
              alignment: Alignment.center,
              child: const CircularProgressIndicator(),
            )
          else if (entries.isEmpty)
            Container(
              height: 200.h,
              alignment: Alignment.center,
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Icon(
                    Icons.table_rows_outlined,
                    size: 48.w,
                    color: Colors.grey.shade400,
                  ),
                  SizedBox(height: 16.h),
                  Text(
                    'No financial data available',
                    style: TextStyle(
                      fontSize: 18.sp,
                      color: Colors.grey.shade600,
                    ),
                  ),
                ],
              ),
            )
          else
            SingleChildScrollView(
              scrollDirection: Axis.horizontal,
              child: DataTable(
                columnSpacing: 20.w,
                headingRowColor: MaterialStateProperty.all(Colors.green.shade100),
                columns: [
                  _buildHeaderColumn('Month/Year', 140.w),
                  _buildHeaderColumn('Chit Value', 140.w),
                  _buildHeaderColumn('Bid Amount', 140.w),
                  _buildHeaderColumn('Subscription', 140.w),
                  _buildHeaderColumn('Commission', 140.w),
                  _buildHeaderColumn('Total Payable', 140.w),
                  _buildHeaderColumn('Dividend', 140.w),
                ],
                rows: entries.map((entry) {
                  return DataRow(
                    cells: [
                      _buildCell(entry.monthYear, isBold: entry.isTotal),
                      _buildCell('₹${entry.chitValue.toStringAsFixed(0)}', isBold: entry.isTotal),
                      _buildCell('₹${entry.bidAmount.toStringAsFixed(0)}', isBold: entry.isTotal),
                      _buildCell('₹${entry.subscriptionAmount.toStringAsFixed(0)}', isBold: entry.isTotal),
                      _buildCell('₹${entry.commissionInstallment.toStringAsFixed(0)}', isBold: entry.isTotal),
                      _buildCell('₹${entry.totalPayableInstallment.toStringAsFixed(0)}', isBold: entry.isTotal),
                      _buildCell(
                        '₹${entry.dividendAmount.toStringAsFixed(0)}',
                        isBold: entry.isTotal,
                        color: entry.isDividendNegative ? Colors.red : Colors.green,
                      ),
                    ],
                  );
                }).toList(),
              ),
            ),
        ],
      ),
    );
  }

  DataColumn _buildHeaderColumn(String label, double width) {
    return DataColumn(
      label: Container(
        width: width,
        child: Text(
          label,
          style: TextStyle(
            fontSize: 16.sp,
            fontWeight: FontWeight.w600,
            color: Colors.green.shade800,
          ),
          overflow: TextOverflow.ellipsis,
        ),
      ),
    );
  }

  DataCell _buildCell(String text, {bool isBold = false, Color? color}) {
    return DataCell(
      Container(
        padding: EdgeInsets.symmetric(vertical: 12.h),
        child: Text(
          text,
          style: TextStyle(
            fontSize: 15.sp,
            fontWeight: isBold ? FontWeight.w600 : FontWeight.normal,
            color: color ?? (isBold ? Colors.green.shade800 : Colors.grey.shade800),
          ),
          overflow: TextOverflow.ellipsis,
        ),
      ),
    );
  }
}

class CompactFinancialTable extends StatelessWidget {
  final List<FinancialTableEntry> entries;
  final bool isLoading;
  final VoidCallback? onRefresh;

  const CompactFinancialTable({
    super.key,
    required this.entries,
    this.isLoading = false,
    this.onRefresh,
  });

  @override
  Widget build(BuildContext context) {
    return Card(
      elevation: 2,
      margin: EdgeInsets.symmetric(horizontal: 8.w, vertical: 4.h),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          // Header
          Container(
            padding: EdgeInsets.all(16.w),
            decoration: BoxDecoration(
              color: Colors.green.shade50,
              borderRadius: BorderRadius.only(
                topLeft: Radius.circular(12.r),
                topRight: Radius.circular(12.r),
              ),
            ),
            child: Row(
              children: [
                Container(
                  padding: EdgeInsets.all(8.w),
                  decoration: BoxDecoration(
                    color: Colors.green.shade600.withOpacity(0.1),
                    borderRadius: BorderRadius.circular(8.r),
                  ),
                  child: Icon(
                    Icons.table_chart,
                    color: Colors.green.shade700,
                    size: 20.w,
                  ),
                ),
                SizedBox(width: 12.w),
                Expanded(
                  child: Text(
                    'Financial Summary',
                    style: TextStyle(
                      fontSize: 18.sp,
                      fontWeight: FontWeight.w600,
                      color: Colors.green.shade700,
                    ),
                  ),
                ),
                if (onRefresh != null)
                  Material(
                    color: Colors.transparent,
                    child: InkWell(
                      borderRadius: BorderRadius.circular(20.r),
                      onTap: onRefresh,
                      child: Padding(
                        padding: EdgeInsets.all(8.w),
                        child: Icon(
                          Icons.refresh,
                          size: 20.w,
                          color: Colors.green.shade700,
                        ),
                      ),
                    ),
                  ),
              ],
            ),
          ),
          
          // Mobile-optimized list view
          if (isLoading)
            Container(
              height: 150.h,
              alignment: Alignment.center,
              child: const CircularProgressIndicator(),
            )
          else if (entries.isEmpty)
            Container(
              height: 150.h,
              alignment: Alignment.center,
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Icon(
                    Icons.table_rows_outlined,
                    size: 32.w,
                    color: Colors.grey.shade400,
                  ),
                  SizedBox(height: 8.h),
                  Text(
                    'No financial data',
                    style: TextStyle(
                      fontSize: 16.sp,
                      color: Colors.grey.shade600,
                    ),
                  ),
                ],
              ),
            )
          else
            ListView.separated(
              shrinkWrap: true,
              physics: const NeverScrollableScrollPhysics(),
              itemCount: entries.length,
              separatorBuilder: (context, index) => Divider(height: 1.h, color: Colors.grey.shade200),
              itemBuilder: (context, index) {
                final entry = entries[index];
                return _buildMobileRow(entry);
              },
            ),
        ],
      ),
    );
  }

  Widget _buildMobileRow(FinancialTableEntry entry) {
    final isTotal = entry.isTotal;
    
    return Container(
      padding: EdgeInsets.all(16.w),
      color: isTotal ? Colors.green.shade50 : Colors.transparent,
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          // Month/Year header
          Row(
            children: [
              Container(
                padding: EdgeInsets.all(6.w),
                decoration: BoxDecoration(
                  color: (isTotal ? Colors.green.shade600 : Colors.grey.shade600).withOpacity(0.1),
                  borderRadius: BorderRadius.circular(6.r),
                ),
                child: Icon(
                  isTotal ? Icons.calculate : Icons.calendar_today,
                  size: 16.w,
                  color: isTotal ? Colors.green.shade700 : Colors.grey.shade600,
                ),
              ),
              SizedBox(width: 8.w),
              Expanded(
                child: Text(
                  entry.monthYear,
                  style: TextStyle(
                    fontSize: 16.sp,
                    fontWeight: isTotal ? FontWeight.w600 : FontWeight.w500,
                    color: isTotal ? Colors.green.shade800 : Colors.grey.shade800,
                  ),
                ),
              ),
              if (isTotal)
                Container(
                  padding: EdgeInsets.symmetric(horizontal: 8.w, vertical: 3.h),
                  decoration: BoxDecoration(
                    color: Colors.green.shade100,
                    borderRadius: BorderRadius.circular(12.r),
                  ),
                  child: Text(
                    'TOTAL',
                    style: TextStyle(
                      fontSize: 10.sp,
                      fontWeight: FontWeight.w600,
                      color: Colors.green.shade700,
                    ),
                  ),
                ),
            ],
          ),
          SizedBox(height: 12.h),
          
          // Financial data grid - optimized for mobile
          Column(
            children: [
              Row(
                children: [
                  Expanded(
                    child: _buildMobileCard('Chit Value', _formatIndianCurrency(entry.chitValue), Icons.currency_rupee, Colors.blue),
                  ),
                  SizedBox(width: 8.w),
                  Expanded(
                    child: _buildMobileCard('Bid Amount', _formatIndianCurrency(entry.bidAmount), Icons.payment, Colors.green),
                  ),
                ],
              ),
              SizedBox(height: 6.h),
              Row(
                children: [
                  Expanded(
                    child: _buildMobileCard('Subscription', _formatIndianCurrency(entry.subscriptionAmount), Icons.account_balance_wallet, Colors.orange),
                  ),
                  SizedBox(width: 8.w),
                  Expanded(
                    child: _buildMobileCard('Commission', _formatIndianCurrency(entry.commissionInstallment), Icons.percent, Colors.purple),
                  ),
                ],
              ),
              SizedBox(height: 6.h),
              Row(
                children: [
                  Expanded(
                    child: _buildMobileCard('Total Payable', _formatIndianCurrency(entry.totalPayableInstallment), Icons.calculate, Colors.indigo),
                  ),
                  SizedBox(width: 8.w),
                  Expanded(
                    child: _buildMobileCard(
                      'Dividend',
                      _formatIndianCurrency(entry.dividendAmount),
                      Icons.trending_up,
                      entry.isDividendNegative ? Colors.red : Colors.green,
                    ),
                  ),
                ],
              ),
            ],
          ),
        ],
      ),
    );
  }

  Widget _buildMobileCard(String label, String value, IconData icon, Color color) {
    return Container(
      padding: EdgeInsets.all(12.w),
      decoration: BoxDecoration(
        color: color.withOpacity(0.08),
        borderRadius: BorderRadius.circular(8.r),
        border: Border.all(color: color.withOpacity(0.2), width: 1),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            children: [
              Icon(icon, size: 16.w, color: color),
              SizedBox(width: 6.w),
              Expanded(
                child: Text(
                  label,
                  style: TextStyle(
                    fontSize: 12.sp,
                    color: color,
                    fontWeight: FontWeight.w500,
                  ),
                  overflow: TextOverflow.ellipsis,
                ),
              ),
            ],
          ),
          SizedBox(height: 2.h),
          Text(
            value,
            style: TextStyle(
              fontSize: 14.sp,
              fontWeight: FontWeight.w600,
              color: color,
            ),
            overflow: TextOverflow.ellipsis,
          ),
        ],
      ),
    );
  }

  DataColumn _buildCompactHeaderColumn(String label, double width) {
    return DataColumn(
      label: Container(
        width: width,
        child: Text(
          label,
          style: TextStyle(
            fontSize: 14.sp,
            fontWeight: FontWeight.w600,
            color: Colors.green.shade800,
          ),
          overflow: TextOverflow.ellipsis,
        ),
      ),
    );
  }

  DataCell _buildCompactCell(String text, {bool isBold = false, Color? color}) {
    return DataCell(
      Container(
        padding: EdgeInsets.symmetric(vertical: 6.h),
        child: Text(
          text,
          style: TextStyle(
            fontSize: 13.sp,
            fontWeight: isBold ? FontWeight.w600 : FontWeight.normal,
            color: color ?? (isBold ? Colors.green.shade800 : Colors.grey.shade800),
          ),
          overflow: TextOverflow.ellipsis,
        ),
      ),
    );
  }
}