import React, { useState, useEffect } from 'react';
import { useNumberCards, useDashboardChart } from '../hooks/useApi';
import { useWorkOrders } from '../hooks/useWorkOrder';
import { useAssetMaintenanceLogs } from '../hooks/useAssetMaintenance';
import { useAssets } from '../hooks/useAsset';
import { FaShoppingCart, FaChartLine, FaBoxes, FaTools, FaCheckCircle, FaClock, FaExclamationTriangle, FaArrowUp, FaArrowDown } from 'react-icons/fa';

const ModernDashboard: React.FC = () => {
  const { data: numberCards, loading: cardsLoading } = useNumberCards();
  const { workOrders } = useWorkOrders({}, 1000, 0);
  const { logs: maintenanceLogs } = useAssetMaintenanceLogs({}, 1000, 0);
  const { assets } = useAssets({}, 1000, 0);
  
  const [workOrderChartData, setWorkOrderChartData] = useState<any>(null);
  const [workOrderGroupedChartData, setWorkOrderGroupedChartData] = useState<any>(null);
  const [maintenanceAssetChartData, setMaintenanceAssetChartData] = useState<any>(null);
  const [upDownTimeChartData, setUpDownTimeChartData] = useState<any>(null);
  const [assigneesGroupedChartData, setAssigneesGroupedChartData] = useState<any>(null);
  const [maintenanceFrequencyChartData, setMaintenanceFrequencyChartData] = useState<any>(null);
  
  const [realWorkOrderCounts, setRealWorkOrderCounts] = useState({
    open: 0,
    inProgress: 0,
    completed: 0,
    total: 0
  });

  const [insights, setInsights] = useState({
    assetUptime: 0,
    avgResponseTime: 0,
    maintenanceEfficiency: 0,
    overdueTasks: 0,
    plannedMaintenance: 0
  });

  // Fetch all charts
  const { data: upDownChart } = useDashboardChart('Up & Down Time Chart');
  const { data: workOrderChart } = useDashboardChart('Work Order Status Chart');
  const { data: assetWiseChart } = useDashboardChart('Maintenance - Asset wise Count');
  const { data: assigneesChart } = useDashboardChart('Asset Maintenance Assignees Status Count');
  const { data: frequencyChart } = useDashboardChart('Asset Maintenance Frequency Chart');
  const { data: ppmStatusChart } = useDashboardChart('PPM Status');

  // Generate Up & Down Time Chart data from assets
  useEffect(() => {
    if (assets && assets.length > 0) {
      let totalUpTime = 0;
      let totalDownTime = 0;
      
      assets.forEach(asset => {
        // Sum up time and down time values
        const upTime = asset.custom_up_time || 0;
        const downTime = asset.custom_down_time || 0;
        
        totalUpTime += typeof upTime === 'number' ? upTime : 0;
        totalDownTime += typeof downTime === 'number' ? downTime : 0;
      });

      // Create pie chart data
      const labels: string[] = [];
      const values: number[] = [];
      
      if (totalUpTime > 0) {
        labels.push('Up Time');
        values.push(totalUpTime);
      }
      
      if (totalDownTime > 0) {
        labels.push('Down Time');
        values.push(totalDownTime);
      }

      // If we have data, create the chart
      if (labels.length > 0 && values.length > 0) {
        // Use blue and purple color palette
        const pieColors: string[] = [];
        if (totalUpTime > 0) pieColors.push('#6366F1'); // Indigo for Up Time
        if (totalDownTime > 0) pieColors.push('#8B5CF6'); // Purple for Down Time
        
        setUpDownTimeChartData({
          labels: labels,
          datasets: [{
            name: 'Time',
            values: values,
            colors: pieColors
          }],
          type: 'Pie'
        });
      } else {
        setUpDownTimeChartData(null);
      }
    } else {
      setUpDownTimeChartData(null);
    }
  }, [assets]);

  // Generate Work Order Status Chart data and counts
  useEffect(() => {
    if (workOrders && workOrders.length > 0) {
      const statusCounts: Record<string, number> = {};
      let openCount = 0;
      let inProgressCount = 0;
      let completedCount = 0;
      
      workOrders.forEach(wo => {
        const status = wo.repair_status || 'Unknown';
        statusCounts[status] = (statusCounts[status] || 0) + 1;
        
        if (status.toLowerCase() === 'open') openCount++;
        if (status.toLowerCase() === 'in progress') inProgressCount++;
        if (status.toLowerCase() === 'completed') completedCount++;
      });

      const labels = Object.keys(statusCounts);
      const values = Object.values(statusCounts);
      
      const colorMap: Record<string, string> = {
        'Open': '#F59E0B',
        'In Progress': '#3B82F6',
        'Pending': '#8B5CF6',
        'Completed': '#10B981',
        'Cancelled': '#EC4899',
        'Unknown': '#6B7280'
      };

      const colors = labels.map(label => colorMap[label] || '#6366F1');

      setWorkOrderChartData({
        labels,
        datasets: [{
          name: 'Work Orders',
          values,
          colors
        }],
        type: 'bar'
      });

      setRealWorkOrderCounts({
        open: openCount,
        inProgress: inProgressCount,
        completed: completedCount,
        total: workOrders.length
      });

      // Generate grouped chart data by work_order_type and repair_status
      const groupedData: Record<string, Record<string, number>> = {};
      const allStatuses = new Set<string>();
      
      // Normalize status names to handle variations
      const normalizeStatus = (status: string): string => {
        const statusLower = status.toLowerCase().trim();
        if (statusLower.includes('open')) return 'Open';
        if (statusLower.includes('work in progress') || statusLower.includes('in progress') || statusLower.includes('wip')) return 'Work In Progress';
        if (statusLower.includes('pending review') || statusLower.includes('pending')) return 'Pending Review';
        if (statusLower.includes('completed') || statusLower.includes('complete')) return 'Completed';
        if (statusLower.includes('closed')) return 'Closed';
        return status; // Return original if no match
      };
      
      workOrders.forEach(wo => {
        const workOrderType = wo.work_order_type || 'null';
        const repairStatus = normalizeStatus(wo.repair_status || 'Unknown');
        
        allStatuses.add(repairStatus);
        
        if (!groupedData[workOrderType]) {
          groupedData[workOrderType] = {};
        }
        
        if (!groupedData[workOrderType][repairStatus]) {
          groupedData[workOrderType][repairStatus] = 0;
        }
        
        groupedData[workOrderType][repairStatus]++;
      });

      // Create labels (work_order_type values)
      const workOrderTypeLabels = Object.keys(groupedData);
      
      // Create datasets for each status (order them consistently)
      const statusOrder = ['Open', 'Work In Progress', 'Pending Review', 'Completed', 'Closed'];
      const statusList = Array.from(allStatuses).sort((a, b) => {
        const aIndex = statusOrder.indexOf(a);
        const bIndex = statusOrder.indexOf(b);
        if (aIndex !== -1 && bIndex !== -1) return aIndex - bIndex;
        if (aIndex !== -1) return -1;
        if (bIndex !== -1) return 1;
        return a.localeCompare(b);
      });
      
      const datasets = statusList.map(status => {
        const values = workOrderTypeLabels.map(type => groupedData[type][status] || 0);
        return {
          name: status,
          values: values
        };
      });

      setWorkOrderGroupedChartData({
        labels: workOrderTypeLabels,
        datasets: datasets,
        type: 'Bar'
      });
    } else {
      // Reset if no work orders
      setWorkOrderGroupedChartData(null);
    }
  }, [workOrders]);

  // Generate maintenance charts and insights
  useEffect(() => {
    if (maintenanceLogs && maintenanceLogs.length > 0) {
      const assetCounts: Record<string, number> = {};
      let completedMaintenance = 0;
      let plannedMaintenance = 0;
      let overdueMaintenance = 0;
      const today = new Date();
      
      maintenanceLogs.forEach(log => {
        const assetName = log.asset_name || 'Unknown';
        assetCounts[assetName] = (assetCounts[assetName] || 0) + 1;
        
        // Count statuses
        if (log.maintenance_status?.toLowerCase() === 'completed') completedMaintenance++;
        if (log.maintenance_status?.toLowerCase() === 'planned') plannedMaintenance++;
        
        // Check if overdue
        if (log.due_date && new Date(log.due_date) < today && log.maintenance_status !== 'Completed') {
          overdueMaintenance++;
        }
      });

      const sorted = Object.entries(assetCounts).sort(([, a], [, b]) => b - a).slice(0, 10);
      const labels = sorted.map(([name]) => name);
      const values = sorted.map(([, count]) => count);
      const barColors = generateColors(labels.length);
      
      setMaintenanceAssetChartData({
        labels,
        datasets: [{ name: 'Maintenance Count', values, colors: barColors }],
        type: 'bar'
      });

      // Calculate maintenance efficiency
      const maintenanceEfficiency = maintenanceLogs.length > 0 
        ? ((completedMaintenance / maintenanceLogs.length) * 100)
        : 0;

      setInsights(prev => ({
        ...prev,
        maintenanceEfficiency,
        overdueTasks: overdueMaintenance,
        plannedMaintenance
      }));

      // Generate Asset Maintenance Assignees Status Count chart data
      const groupedData: Record<string, Record<string, number>> = {};
      const allStatuses = new Set<string>();
      
      // Normalize status names to match expected chart statuses
      const normalizeStatus = (status: string, log: any): string => {
        const statusLower = status.toLowerCase().trim();
        const today = new Date();
        const dueDate = log.due_date ? new Date(log.due_date) : null;
        
        // Check for overdue first
        if (dueDate && dueDate < today && statusLower !== 'completed' && statusLower !== 'cancelled') {
          return 'Overdue';
        }
        
        // Map status variations
        if (statusLower.includes('completed on time') || statusLower === 'completed on time') {
          return 'Completed On Time';
        }
        if (statusLower.includes('completed within') || statusLower.includes('within sla') || statusLower === 'completed') {
          return 'Completed Within SLA';
        }
        if (statusLower.includes('delay') || statusLower.includes('late')) {
          return 'Delay In Completion';
        }
        if (statusLower.includes('pending') || statusLower === 'planned') {
          return 'Pending';
        }
        if (statusLower.includes('overdue')) {
          return 'Overdue';
        }
        if (statusLower.includes('cancelled') || statusLower === 'cancelled') {
          return 'Cancelled';
        }
        
        return status; // Return original if no match
      };
      
      maintenanceLogs.forEach(log => {
        const assignee = log.assign_to_name || 'null';
        const maintenanceStatus = log.maintenance_status || 'Unknown';
        const normalizedStatus = normalizeStatus(maintenanceStatus, log);
        
        allStatuses.add(normalizedStatus);
        
        if (!groupedData[assignee]) {
          groupedData[assignee] = {};
        }
        
        if (!groupedData[assignee][normalizedStatus]) {
          groupedData[assignee][normalizedStatus] = 0;
        }
        
        groupedData[assignee][normalizedStatus]++;
      });

      // Create labels (assignee names)
      const assigneeLabels = Object.keys(groupedData);
      
      // Create datasets for each status (order them consistently)
      const statusOrder = ['Completed On Time', 'Completed Within SLA', 'Delay In Completion', 'Pending', 'Overdue', 'Cancelled'];
      const statusList = Array.from(allStatuses).sort((a, b) => {
        const aIndex = statusOrder.indexOf(a);
        const bIndex = statusOrder.indexOf(b);
        if (aIndex !== -1 && bIndex !== -1) return aIndex - bIndex;
        if (aIndex !== -1) return -1;
        if (bIndex !== -1) return 1;
        return a.localeCompare(b);
      });
      
      const datasets = statusList.map(status => {
        const values = assigneeLabels.map(assignee => groupedData[assignee][status] || 0);
        return {
          name: status,
          values: values
        };
      });

      setAssigneesGroupedChartData({
        labels: assigneeLabels,
        datasets: datasets,
        type: 'Bar'
      });

      // Generate Maintenance Frequency Chart data
      const frequencyCounts: Record<string, number> = {};
      
      maintenanceLogs.forEach(log => {
        // Use periodicity if available, otherwise fall back to maintenance_type, or 'Other'
        const frequency = log.periodicity || log.maintenance_type || 'Other';
        frequencyCounts[frequency] = (frequencyCounts[frequency] || 0) + 1;
      });

      // Sort by count (descending) for better visualization
      const sortedFrequencies = Object.entries(frequencyCounts)
        .sort(([, a], [, b]) => b - a);
      
      const frequencyLabels = sortedFrequencies.map(([name]) => name);
      const frequencyValues = sortedFrequencies.map(([, count]) => count);
      const frequencyColors = generateColors(frequencyLabels.length);
      
      setMaintenanceFrequencyChartData({
        labels: frequencyLabels,
        datasets: [{
          name: 'Frequency',
          values: frequencyValues,
          colors: frequencyColors
        }],
        type: 'bar'
      });
    } else {
      setAssigneesGroupedChartData(null);
      setMaintenanceFrequencyChartData(null);
    }
  }, [maintenanceLogs]);

  // Calculate asset uptime and response time from work orders
  useEffect(() => {
    if (workOrders && workOrders.length > 0) {
      let totalResponseHours = 0;
      let responseCount = 0;
      
      workOrders.forEach(wo => {
        // Calculate response time if we have creation and first_responded_on
        if (wo.creation && wo.first_responded_on) {
          const created = new Date(wo.creation);
          const responded = new Date(wo.first_responded_on);
          const hours = (responded.getTime() - created.getTime()) / (1000 * 60 * 60);
          if (hours >= 0) {
            totalResponseHours += hours;
            responseCount++;
          }
        }
      });

      const avgResponseTime = responseCount > 0 ? totalResponseHours / responseCount : 0;

      // Calculate uptime (assets operational vs under maintenance)
      const operationalCount = workOrders.filter(wo => 
        wo.repair_status?.toLowerCase() === 'completed'
      ).length;
      const assetUptime = workOrders.length > 0 
        ? ((operationalCount / workOrders.length) * 100) 
        : 0;

      setInsights(prev => ({
        ...prev,
        assetUptime,
        avgResponseTime
      }));
    }
  }, [workOrders]);

  if (cardsLoading) {
    return (
      <div className="min-h-screen flex items-center justify-center bg-gray-50 dark:bg-gray-900">
        <div className="text-center">
          <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-indigo-600 mx-auto mb-4"></div>
          <div className="text-gray-600 dark:text-gray-400">Loading dashboard...</div>
        </div>
      </div>
    );
  }

  return (
    <div className="min-h-screen bg-gray-50 dark:bg-gray-900 p-6">
      <div className="max-w-[1600px] mx-auto">
       

        {/* Top Section: Side-by-Side Layout */}
        <div className="grid grid-cols-1 lg:grid-cols-12 gap-3 mb-6">
          
          {/* LEFT SIDE: 7 columns - Two cards stacked */}
          <div className="lg:col-span-7 space-y-2">
            {/* TOP: All 6 Stats in ONE Container */}
            <div className="bg-white dark:bg-gray-800 rounded-lg shadow border border-gray-200 dark:border-gray-700 px-4 py-4">
              {/* Inside: 12-column grid, each stat takes 2 columns */}
              <div className="grid grid-cols-12 gap-0 w-full">
                {/* Each box takes col-span-2 (6 boxes × 2 = 12 columns) */}
                <div className="col-span-2">
                  <StatCard
                    icon={<FaBoxes className="text-indigo-600" />}
                    value={numberCards?.total_assets ?? 0}
                    label="TOTAL NO. OF ASSETS"
                    bgColor="bg-indigo-50 dark:bg-indigo-900/20"
                  />
                </div>
                
                <div className="col-span-2">
                  <StatCard
                    icon={<FaShoppingCart className="text-purple-600" />}
                    value={realWorkOrderCounts.open || (numberCards?.work_orders_open ?? 0)}
                    label="OPEN WORK ORDERS"
                    bgColor="bg-purple-50 dark:bg-purple-900/20"
                  />
                </div>
                
                <div className="col-span-2">
                  <StatCard
                    icon={<FaClock className="text-blue-600" />}
                    value={realWorkOrderCounts.inProgress || (numberCards?.work_orders_in_progress ?? 0)}
                    label="WORK ORDERS IN PROGRESS"
                    bgColor="bg-blue-50 dark:bg-blue-900/20"
                  />
                </div>
                
                <div className="col-span-2">
                  <StatCard
                    icon={<FaCheckCircle className="text-pink-600" />}
                    value={realWorkOrderCounts.completed || (numberCards?.work_orders_completed ?? 0)}
                    label="COMPLETED WORK ORDERS"
                    bgColor="bg-pink-50 dark:bg-pink-900/20"
                  />
                </div>

                <div className="col-span-2">
                  <StatCard
                    icon={<FaTools className="text-cyan-600" />}
                    value={maintenanceLogs?.length || 0}
                    label="MAINTENANCE LOGS"
                    bgColor="bg-cyan-50 dark:bg-cyan-900/20"
                  />
                </div>
                
                <div className="col-span-2">
                  <StatCard
                    icon={<FaChartLine className="text-purple-600" />}
                    value={realWorkOrderCounts.total}
                    label="TOTAL WORK ORDERS"
                    bgColor="bg-purple-50 dark:bg-purple-900/20"
                  />
                </div>
              </div>
            </div>

            {/* BOTTOM: Completion Rate Card */}
            <CompletionRateCard 
              totalWorkOrders={realWorkOrderCounts.total}
              completedWorkOrders={realWorkOrderCounts.completed}
              inProgressWorkOrders={realWorkOrderCounts.inProgress}
            />
          </div>

          {/* RIGHT SIDE: Asset Maintenance Assignees Status Count Chart (5 columns - Full height) */}
          <div className="lg:col-span-5">
            <GroupedChartCard 
              title="Asset Maintenance Assignees Status Count" 
              data={assigneesGroupedChartData || assigneesChart} 
            />
          </div>
        </div>

        {/* Insights Row - Key Metrics (All Dynamic Data) */}
        <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4 mb-6">
          <InsightCard
            icon={<FaCheckCircle className="text-green-500" />}
            title="Asset Uptime"
            value={`${insights.assetUptime.toFixed(1)}%`}
            trend={insights.assetUptime >= 90 ? "Excellent" : insights.assetUptime >= 75 ? "Good" : "Needs Attention"}
            trendUp={insights.assetUptime >= 75}
            bgColor="bg-green-50 dark:bg-green-900/20"
          />
          
          <InsightCard
            icon={<FaClock className="text-blue-500" />}
            title="Avg Response Time"
            value={insights.avgResponseTime > 0 ? `${insights.avgResponseTime.toFixed(1)} hrs` : 'N/A'}
            trend={insights.avgResponseTime > 0 && insights.avgResponseTime < 4 ? "Fast Response" : "Monitor"}
            trendUp={insights.avgResponseTime > 0 && insights.avgResponseTime < 4}
            bgColor="bg-blue-50 dark:bg-blue-900/20"
          />
          
          <InsightCard
            icon={<FaTools className="text-orange-500" />}
            title="Maintenance Efficiency"
            value={`${insights.maintenanceEfficiency.toFixed(1)}%`}
            trend={insights.maintenanceEfficiency >= 70 ? "On Track" : "Needs Attention"}
            trendUp={insights.maintenanceEfficiency >= 70}
            bgColor="bg-orange-50 dark:bg-orange-900/20"
          />
          
          <InsightCard
            icon={<FaExclamationTriangle className="text-red-500" />}
            title="Overdue Maintenance"
            value={insights.overdueTasks}
            trend={insights.overdueTasks === 0 ? "All Clear" : insights.overdueTasks <= 3 ? "Low" : "High Priority"}
            trendUp={insights.overdueTasks <= 3}
            bgColor="bg-red-50 dark:bg-red-900/20"
          />
        </div>

        {/* Second Row - Up & Down Time Chart */}
        <div className="grid grid-cols-1 gap-3 mb-6">
          {/* Up & Down Time - Pie Chart */}
          <div className="w-full">
            <CustomerSatisfactionCard 
              data={upDownTimeChartData || upDownChart} 
              title="Up & Down Time Chart" 
              description="Asset uptime and downtime distribution for tracking availability." 
            />
          </div>

          {/* Metric Cards */}
          {/* <MetricCard
            icon={<FaTools />}
            label="Total Assets"
            value={numberCards?.total_assets?.toLocaleString() || '0'}
            iconColor="text-purple-600"
            bgColor="bg-gradient-to-br from-purple-50 to-indigo-50 dark:from-purple-900/20 dark:to-indigo-900/20"
          />

          <MetricCard
            icon={<FaShoppingCart />}
            label="Total Work Orders"
            value={realWorkOrderCounts.total.toLocaleString()}
            iconColor="text-white"
            bgColor="bg-gradient-to-br from-indigo-500 to-purple-600"
            textColor="text-white"
          />

          <MetricCard
            icon={<FaCheckCircle />}
            label="Completed Tasks"
            value={realWorkOrderCounts.completed.toLocaleString()}
            iconColor="text-white"
            bgColor="bg-gradient-to-br from-purple-500 to-pink-600"
            textColor="text-white"
          />

          <MetricCard
            icon={<FaClock />}
            label="Pending Tasks"
            value={realWorkOrderCounts.open.toLocaleString()}
            iconColor="text-blue-600"
            bgColor="bg-gradient-to-br from-blue-50 to-cyan-50 dark:from-blue-900/20 dark:to-cyan-900/20"
          /> */}

          <div className="md:col-span-2">
            {/* Placeholder for additional content */}
          </div>
        </div>

        {/* Additional Charts Section */}
        <div className="grid grid-cols-1 lg:grid-cols-2 gap-4 ">
          <ChartCard 
            title="Maintenance - Asset wise Count" 
            data={maintenanceAssetChartData || assetWiseChart} 
            type="bar" 
          />

          <ChartCard 
            title="Maintenance Frequency" 
            data={maintenanceFrequencyChartData || frequencyChart} 
            type="bar" 
          />

          {/* <ChartCard 
            title="PPM Status" 
            data={ppmStatusChart} 
            type="bar" 
          /> */}

          {/* Work Order Status Distribution */}
          <DepartmentSalesCard 
            data={workOrderChartData || workOrderChart}
            totalWorkOrders={realWorkOrderCounts.total}
            completedWorkOrders={realWorkOrderCounts.completed}
          />

          {/* Work Order Status Chart */}
          <GroupedChartCard 
            title="Work Order Status Chart" 
            data={workOrderGroupedChartData || workOrderChart} 
          />
        </div>
      </div>
    </div>
  );
};

// Mini Stat Box Component with border-right (Compact)
const StatCard: React.FC<{ icon: React.ReactNode; value: string | number; label: string; bgColor: string }> = ({ 
  icon, value, label, bgColor 
}) => (
  <div className="text-center py-2 px-1 border-r border-gray-200 dark:border-gray-700 last:border-r-0">
    <div className={`w-10 h-10 ${bgColor} rounded-lg flex items-center justify-center text-base mx-auto mb-1.5`}>
      {icon}
    </div>
    <div className="text-lg font-semibold text-gray-900 dark:text-white leading-none mb-1">{value}</div>
    <div className="text-[9px] font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wide leading-tight px-1">{label}</div>
  </div>
);

// Insight Card Component - Shows key metrics with trends
const InsightCard: React.FC<{ 
  icon: React.ReactNode; 
  title: string; 
  value: string | number; 
  trend: string;
  trendUp: boolean;
  bgColor: string;
}> = ({ icon, title, value, trend, trendUp, bgColor }) => (
  <div className="bg-white dark:bg-gray-800 rounded-lg shadow hover:shadow-md transition-all p-4 border border-gray-200 dark:border-gray-700">
    <div className="flex items-start justify-between mb-3">
      <div className={`w-10 h-10 ${bgColor} rounded-lg flex items-center justify-center text-lg`}>
        {icon}
      </div>
      <div className={`flex items-center gap-1 text-xs font-medium ${trendUp ? 'text-green-600 dark:text-green-400' : 'text-red-600 dark:text-red-400'}`}>
        {trendUp ? <FaArrowUp className="text-[10px]" /> : <FaArrowDown className="text-[10px]" />}
        {trend}
      </div>
    </div>
    <div className="text-2xl font-semibold text-gray-900 dark:text-white mb-1">{value}</div>
    <div className="text-xs font-medium text-gray-600 dark:text-gray-400">{title}</div>
  </div>
);

// Completion Rate Card with Mini Area Chart
const CompletionRateCard: React.FC<{ 
  totalWorkOrders: number; 
  completedWorkOrders: number;
  inProgressWorkOrders: number;
}> = ({ totalWorkOrders, completedWorkOrders, inProgressWorkOrders }) => {
  const completionRate = totalWorkOrders > 0 
    ? ((completedWorkOrders / totalWorkOrders) * 100).toFixed(2)
    : '0.00';
  
  return (
    <div className="bg-white dark:bg-gray-800 rounded-lg shadow hover:shadow-md transition-all px-5 border border-gray-200 dark:border-gray-700">
      <div className="mb-3">
      <div className="text-2xl font-semibold text-gray-900 dark:text-white mb-2">{completionRate}%</div>
      <div className="text-sm font-medium text-indigo-600 dark:text-indigo-400 mb-1">Completion Rate</div>
       
      </div>
      <div className="mt-1">
        <MiniAreaChart />
      </div>
      
      {/* Mini Stats */}
      <div className="grid grid-cols-3 gap-3 mt-2 pt-2 mb-2 pb-2 border-t border-gray-200 dark:border-gray-700">
        <div className="text-center">
        <div className="text-lg font-semibold text-indigo-600 dark:text-indigo-400">{totalWorkOrders}</div>
        <div className="text-[9px] font-medium text-gray-500 dark:text-gray-400 uppercase">Total</div>
      </div>
      <div className="text-center">
        <div className="text-lg font-semibold text-blue-600 dark:text-blue-400">{inProgressWorkOrders}</div>
        <div className="text-[9px] font-medium text-gray-500 dark:text-gray-400 uppercase">In Progress</div>
      </div>
      <div className="text-center">
        <div className="text-lg font-semibold text-green-600 dark:text-green-400">{completedWorkOrders}</div>
        <div className="text-[9px] font-medium text-gray-500 dark:text-gray-400 uppercase">Completed</div>
        </div>
      </div>
    </div>
  );
};


// Department Sales Card (Full Height to match left side total height)
const DepartmentSalesCard: React.FC<{ data: any; totalWorkOrders: number; completedWorkOrders: number }> = ({ 
  data, totalWorkOrders, completedWorkOrders 
}) => {
  return (
    <div className="bg-white dark:bg-gray-800 rounded-lg shadow hover:shadow-md transition-all px-5 py-5 border border-gray-200 dark:border-gray-700 flex flex-col" style={{ minHeight: '100%' }}>
      <div className="flex items-center justify-between mb-4 flex-shrink-0">
        <div>
          <h3 className="text-base font-semibold text-gray-900 dark:text-white">Work Order Status Distribution</h3>
          <div className="flex items-center gap-3 mt-1">
            <div className="text-xl font-semibold text-gray-900 dark:text-white">
              {totalWorkOrders} Total
            </div>
            <div className="text-xs text-gray-600 dark:text-gray-400">
              <span className="font-medium">{completedWorkOrders} Completed</span>
              <span className="ml-1">({totalWorkOrders > 0 ? ((completedWorkOrders / totalWorkOrders) * 100).toFixed(1) : 0}%)</span>
            </div>
          </div>
        </div>
        <div className="flex items-center gap-2">
          <button className="p-2 hover:bg-gray-100 dark:hover:bg-gray-700 rounded-lg">
            <svg className="w-5 h-5 text-gray-500" fill="currentColor" viewBox="0 0 20 20">
              <path d="M10 6a2 2 0 110-4 2 2 0 010 4zM10 12a2 2 0 110-4 2 2 0 010 4zM10 18a2 2 0 110-4 2 2 0 010 4z" />
            </svg>
          </button>
        </div>
      </div>
      <div className="flex-1">
        <BarChart data={data} />
      </div>
          </div>
  );
};

// Pie Chart Card with Custom Title (Compact Version)
const CustomerSatisfactionCard: React.FC<{ data: any; title: string; description: string }> = ({ 
  data, title, description 
}) => {
  return (
    <div className="bg-white dark:bg-gray-800 rounded-lg shadow hover:shadow-md transition-all p-5 border border-gray-200 dark:border-gray-700">
      <h3 className="text-base font-semibold text-gray-900 dark:text-white mb-1">{title}</h3>
      <p className="text-xs text-gray-600 dark:text-gray-400 mb-4">
        {description}
      </p>
      {data ? <PieChart data={data} /> : (
        <div className="h-64 flex items-center justify-center text-gray-400">
          No data available
        </div>
      )}
    </div>
  );
};

// Metric Card Component (Bottom Row - Smaller & Compact)
const MetricCard: React.FC<{ 
  icon: React.ReactNode; 
  label: string; 
  value: string; 
  iconColor?: string;
  bgColor: string;
  textColor?: string;
}> = ({ icon, label, value, iconColor = "text-white", bgColor, textColor = "text-gray-900 dark:text-white" }) => (
  <div className={`${bgColor} rounded-lg shadow hover:shadow-md transition-all p-5 border border-gray-200 dark:border-gray-700`}>
    <div className="flex items-center justify-between mb-3">
      <div className={`text-2xl ${iconColor}`}>
        {icon}
      </div>
    </div>
    <div>
      <div className={`text-[10px] font-medium uppercase tracking-wide mb-1 ${textColor.includes('white') ? 'text-white/80' : 'text-gray-600 dark:text-gray-400'}`}>
        {label}
      </div>
      <div className={`text-2xl font-semibold ${textColor}`}>{value}</div>
    </div>
  </div>
);

// Mini Area Chart Component
const MiniAreaChart: React.FC = () => {
  const data = [10, 15, 13, 17, 14, 18, 16];
  const max = Math.max(...data);
  const width = 400;
  const height = 80;
  
  const points = data.map((value, i) => {
    const x = (i / (data.length - 1)) * width;
    const y = height - (value / max) * height;
    return `${x},${y}`;
  }).join(' ');

  const areaPoints = `0,${height} ${points} ${width},${height}`;

  return (
    <svg width="100%" height={height} viewBox={`0 0 ${width} ${height}`} className="w-full">
      <defs>
        <linearGradient id="areaGradient" x1="0%" y1="0%" x2="0%" y2="100%">
          <stop offset="0%" style={{ stopColor: '#8B5CF6', stopOpacity: 0.3 }} />
          <stop offset="100%" style={{ stopColor: '#8B5CF6', stopOpacity: 0.05 }} />
        </linearGradient>
      </defs>
      <polygon points={areaPoints} fill="url(#areaGradient)" />
      <polyline
        points={points}
        fill="none"
        stroke="#8B5CF6"
        strokeWidth="2"
        strokeLinecap="round"
        strokeLinejoin="round"
      />
    </svg>
  );
};

// Grouped Bar Chart Component for multiple datasets
const GroupedBarChart: React.FC<{ data: any }> = ({ data }) => {
  const labels = data?.labels || [];
  const datasets = data?.datasets || [];
  
  if (!datasets.length) {
    return <div className="text-center text-gray-400 py-4 text-sm">No data available</div>;
  }

  const allValues = datasets.flatMap((ds: any) => ds.values || []);
  const max = Math.max(...allValues, 1);
  const chartHeight = 240;
  const width = Math.max(800, labels.length * 100);
  const groupWidth = Math.min(120, (width - 100) / labels.length);
  const barSpacing = 4;
  const numBars = datasets.length;
  const barWidth = Math.max(12, (groupWidth - barSpacing * (numBars + 1)) / numBars);

  // Color mapping for status types - Blue and Purple palette
  const statusColors: Record<string, string> = {
    'Completed On Time': '#6366F1', // Indigo
    'Completed Within SLA': '#3B82F6', // Blue
    'Delay In Completion': '#8B5CF6', // Purple
    'Pending': '#A855F7', // Purple variant
    'Overdue': '#EC4899', // Pink (for contrast/alert)
    'Cancelled': '#0EA5E9', // Sky blue
    'Open': '#6366F1', // Indigo
    'Work In Progress': '#3B82F6', // Blue
    'Pending Review': '#8B5CF6', // Purple
    'Completed': '#6366F1', // Indigo
    'Closed': '#A855F7', // Purple variant
  };

  // Generate colors for datasets
  const getDatasetColor = (datasetName: string, index: number): string => {
    // Try to match by name first
    for (const [key, color] of Object.entries(statusColors)) {
      if (datasetName.toLowerCase().includes(key.toLowerCase())) {
        return color;
      }
    }
    // Fallback to generated colors
    return generateColors(numBars)[index];
  };

  return (
    <div className="relative w-full overflow-x-auto">
      <svg width="100%" height={chartHeight + 40} viewBox={`0 0 ${width} ${chartHeight + 40}`} className="w-full" preserveAspectRatio="xMidYMid meet">
        <defs>
          {datasets.map((ds: any, i: number) => {
            const color = getDatasetColor(ds.name || '', i);
            return (
              <linearGradient key={i} id={`groupedBarGradient${i}`} x1="0%" y1="0%" x2="0%" y2="100%">
                <stop offset="0%" style={{ stopColor: color, stopOpacity: 0.9 }} />
                <stop offset="100%" style={{ stopColor: color, stopOpacity: 0.7 }} />
              </linearGradient>
            );
          })}
        </defs>

        {/* Grid lines */}
        {[0, 0.25, 0.5, 0.75, 1].map((ratio, i) => (
          <line
            key={i}
            x1="60"
            y1={chartHeight - (ratio * chartHeight)}
            x2={width - 20}
            y2={chartHeight - (ratio * chartHeight)}
            stroke="#E5E7EB"
            strokeWidth="1"
            className="dark:stroke-gray-700"
          />
        ))}

        {/* Y-axis labels */}
        {[0, 0.25, 0.5, 0.75, 1].map((ratio, i) => (
          <text
            key={i}
            x="45"
            y={chartHeight - (ratio * chartHeight) + 4}
            textAnchor="end"
            className="text-xs fill-gray-400 dark:fill-gray-500"
          >
            {(max * ratio).toFixed(ratio === 0 ? 0 : max < 5 ? 1 : 0)}
          </text>
        ))}

        {/* Y-axis label */}
        <text
          x="15"
          y={chartHeight / 2}
          textAnchor="middle"
          transform={`rotate(-90, 15, ${chartHeight / 2})`}
          className="text-xs fill-gray-600 dark:fill-gray-400 font-medium"
        >
          Count
        </text>

        {/* Grouped Bars */}
        {labels.map((label: string, labelIndex: number) => {
          const groupX = 80 + (labelIndex * groupWidth);
          
          return (
            <g key={labelIndex}>
              {datasets.map((dataset: any, dsIndex: number) => {
                const value = dataset.values?.[labelIndex] || 0;
                const barHeight = (value / max) * chartHeight;
                const x = groupX + barSpacing + (dsIndex * (barWidth + barSpacing));
                const y = chartHeight - barHeight;
                const color = getDatasetColor(dataset.name || '', dsIndex);
                
                return (
                  <g key={dsIndex}>
                    <rect
                      x={x}
                      y={y}
                      width={barWidth}
                      height={barHeight}
                      fill={color}
                      rx="4"
                      ry="4"
                      className="hover:opacity-80 cursor-pointer transition-opacity"
                    />
                  </g>
                );
              })}
              
              {/* X-axis label */}
              <text
                x={groupX + groupWidth / 2}
                y={chartHeight + 15}
                textAnchor="middle"
                className="text-xs fill-gray-600 dark:fill-gray-400"
              >
                {label && label.length > 12 ? label.substring(0, 10) + '...' : label || 'null'}
              </text>
            </g>
          );
        })}
      </svg>

      {/* Legend */}
      <div className="flex flex-wrap items-center justify-center gap-2 mt-2 pt-2 border-t border-gray-200 dark:border-gray-700">
        {datasets.map((dataset: any, i: number) => {
          const color = getDatasetColor(dataset.name || '', i);
          return (
            <div key={i} className="flex items-center gap-1.5">
              <div className="w-2.5 h-2.5 rounded" style={{ backgroundColor: color }}></div>
              <span className="text-xs text-gray-600 dark:text-gray-400">
                {dataset.name && dataset.name.length > 20 ? dataset.name.substring(0, 18) + '...' : dataset.name || `Series ${i + 1}`}
              </span>
            </div>
          );
        })}
      </div>
    </div>
  );
};

// Bar Chart Component with Line Overlay (Like in Image)
const BarChart: React.FC<{ data: any }> = ({ data }) => {
  const labels = data?.labels || [];
  const datasets = data?.datasets || [];
  
  if (!datasets.length) {
    return <div className="text-center text-gray-400 py-8">No data available</div>;
  }

  const allValues = datasets.flatMap((ds: any) => ds.values || []);
  const max = Math.max(...allValues, 1);
  const chartHeight = 250;
  // Increase width based on number of labels to prevent overlap
  const minBarSpacing = 60; // Minimum spacing between bars
  const calculatedWidth = Math.max(800, labels.length * minBarSpacing + 100);
  const width = calculatedWidth;

  // Generate smooth line data (Average line overlay)
  const lineData = datasets[0]?.values || [];

  return (
    <div className="relative w-full overflow-x-auto">
      <svg width="100%" height="320" viewBox={`0 0 ${width} ${chartHeight + 70}`} className="w-full" preserveAspectRatio="xMidYMid meet">
        <defs>
          <linearGradient id="barGradient" x1="0%" y1="0%" x2="0%" y2="100%">
            <stop offset="0%" style={{ stopColor: '#8B5CF6', stopOpacity: 0.8 }} />
            <stop offset="100%" style={{ stopColor: '#8B5CF6', stopOpacity: 0.6 }} />
          </linearGradient>
        </defs>

        {/* Grid lines */}
        {[0, 0.25, 0.5, 0.75, 1].map((ratio, i) => (
          <line
            key={i}
            x1="60"
            y1={chartHeight - (ratio * chartHeight)}
            x2={width - 20}
            y2={chartHeight - (ratio * chartHeight)}
            stroke="#E5E7EB"
            strokeWidth="1"
            className="dark:stroke-gray-700"
          />
        ))}

        {/* Y-axis labels */}
        {[0, 0.25, 0.5, 0.75, 1].map((ratio, i) => (
          <text
            key={i}
            x="45"
            y={chartHeight - (ratio * chartHeight) + 4}
            textAnchor="end"
            className="text-xs fill-gray-400 dark:fill-gray-500"
          >
            {(max * ratio).toFixed(0)}
          </text>
        ))}

        {/* Bars */}
        {labels.map((_label: string, i: number) => {
          const value = datasets[0]?.values?.[i] || 0;
          const barHeight = (value / max) * chartHeight;
          const barWidth = Math.min(40, (width - 100) / labels.length - 10);
          const x = 80 + (i * ((width - 100) / labels.length));
          
          return (
            <g key={i}>
              <rect
                x={x}
                y={chartHeight - barHeight}
                width={barWidth}
                height={barHeight}
                fill={`url(#barGradient)`}
                rx="4"
                ry="4"
                className="hover:opacity-80 cursor-pointer transition-opacity"
              />
            </g>
          );
        })}

        {/* Line Chart Overlay */}
        {lineData.length > 0 && (
          <polyline
            points={lineData.map((value: number, i: number) => {
              const x = 80 + (i * ((width - 100) / labels.length)) + 20;
              const y = chartHeight - ((value / max) * chartHeight);
              return `${x},${y}`;
            }).join(' ')}
            fill="none"
            stroke="#60A5FA"
            strokeWidth="3"
            strokeLinecap="round"
            strokeLinejoin="round"
            className="drop-shadow-md"
          />
        )}

        {/* Line data points */}
        {lineData.map((value: number, i: number) => {
          const x = 80 + (i * ((width - 100) / labels.length)) + 20;
          const y = chartHeight - ((value / max) * chartHeight);
          return (
            <circle
              key={i}
              cx={x}
              cy={y}
              r="4"
              fill="#3B82F6"
              className="hover:r-6 cursor-pointer transition-all"
            />
          );
        })}

        {/* X-axis labels */}
        {labels.map((label: string, i: number) => {
          const barSpacing = (width - 100) / labels.length;
          const x = 80 + (i * barSpacing) + (barSpacing / 2);
          const truncatedLabel = label && label.length > 15 ? label.substring(0, 13) + '...' : label || 'null';
          
          return (
            <text
              key={i}
              x={x}
              y={chartHeight + 50}
              transform={`rotate(-45, ${x}, ${chartHeight + 50})`}
              textAnchor="middle"
              className="text-xs fill-gray-600 dark:fill-gray-400"
            >
              {truncatedLabel}
            </text>
          );
        })}
      </svg>

      {/* Legend - Inside the card */}
      <div className="flex items-center justify-center gap-3 mt-2">
        <div className="flex items-center gap-2">
          <div className="w-3 h-3 rounded" style={{ background: '#8B5CF6' }}></div>
          <span className="text-xs text-gray-600 dark:text-gray-400">Total Sales</span>
        </div>
        <div className="flex items-center gap-2">
          <div className="w-3 h-3 rounded-full bg-blue-500"></div>
          <span className="text-xs text-gray-600 dark:text-gray-400">Average</span>
        </div>
      </div>
    </div>
  );
};

// Pie Chart Component
const PieChart: React.FC<{ data: any }> = ({ data }) => {
  const labels = data?.labels || [];
  const values = data?.datasets?.[0]?.values || [];
  
  // Check if this is an Up & Down Time chart and ALWAYS apply blue/purple colors
  const isUpDownTimeChart = labels.some((label: string) => 
    label.toLowerCase().includes('up time') || 
    label.toLowerCase().includes('down time') ||
    label.toLowerCase().includes('uptime') ||
    label.toLowerCase().includes('downtime')
  );
  
  let colors: string[] = [];
  
  // Always override colors for Up & Down Time charts to use blue/purple palette
  if (isUpDownTimeChart && labels.length >= 1) {
    // Apply blue/purple colors based on label order and content
    colors = labels.map((label: string) => {
      const labelLower = label.toLowerCase();
      if (labelLower.includes('up time') || labelLower.includes('uptime')) {
        return '#6366F1'; // Indigo for Up Time
      }
      if (labelLower.includes('down time') || labelLower.includes('downtime')) {
        return '#8B5CF6'; // Purple for Down Time
      }
      // If label doesn't match, assign based on position (first = up, second = down)
      const index = labels.indexOf(label);
      return index === 0 ? '#6366F1' : '#8B5CF6';
    });
  } else {
    // For other charts, use custom colors if provided, otherwise generate
    const datasetColors = data?.datasets?.[0]?.colors;
    colors = datasetColors && datasetColors.length === values.length 
      ? datasetColors 
      : generateColors(values.length);
  }
  
  const total = values.reduce((sum: number, val: number) => sum + val, 0);
  const radius = 100;
  const cx = radius + 10;
  const cy = radius + 10;
  
  let cumulative = 0;
  const slices = values.map((value: number, i: number) => {
    const startAngle = (cumulative / total) * 2 * Math.PI - Math.PI / 2;
    cumulative += value;
    const endAngle = (cumulative / total) * 2 * Math.PI - Math.PI / 2;
    const largeArc = endAngle - startAngle > Math.PI ? 1 : 0;
    
    const x1 = cx + radius * Math.cos(startAngle);
    const y1 = cy + radius * Math.sin(startAngle);
    const x2 = cx + radius * Math.cos(endAngle);
    const y2 = cy + radius * Math.sin(endAngle);
    
    return {
      path: `M ${cx} ${cy} L ${x1} ${y1} A ${radius} ${radius} 0 ${largeArc} 1 ${x2} ${y2} Z`,
      color: colors[i],
      label: labels[i],
      value: value,
      percentage: ((value / total) * 100).toFixed(1)
    };
  });

  return (
    <div className="flex flex-col md:flex-row items-center justify-around">
      <svg width={cx * 2} height={cy * 2} viewBox={`0 0 ${cx * 2} ${cy * 2}`} className="max-w-xs">
        {slices.map((slice: any, i: number) => (
          <path 
            key={i} 
            d={slice.path} 
            fill={slice.color} 
            className="hover:opacity-80 transition-opacity cursor-pointer drop-shadow-lg"
          />
        ))}
      </svg>
      <div className="flex flex-col gap-3 mt-4 md:mt-0">
        {slices.map((slice: any, i: number) => (
          <div key={i} className="flex items-center gap-3">
            <div className="w-3 h-3 rounded-full" style={{ backgroundColor: slice.color }}></div>
            <span className="text-sm text-gray-700 dark:text-gray-300">{slice.label}</span>
            <span className="text-sm font-bold text-gray-900 dark:text-white">{slice.value}</span>
          </div>
        ))}
      </div>
    </div>
  );
};

// Grouped Chart Card Component for charts with multiple datasets
const GroupedChartCard: React.FC<{ title: string; data: any }> = ({ title, data }) => {
  return (
    <div className="bg-white dark:bg-gray-800 rounded-lg shadow hover:shadow-md transition-all p-3 border border-gray-200 dark:border-gray-700">
      <div className="flex items-center justify-between mb-2">
        <h3 className="text-sm font-semibold text-gray-800 dark:text-white">{title}</h3>
        <div className="flex items-center gap-1">
          <button className="p-1.5 hover:bg-gray-100 dark:hover:bg-gray-700 rounded-lg">
            <svg className="w-4 h-4 text-gray-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M3 4a1 1 0 011-1h16a1 1 0 011 1v2.586a1 1 0 01-.293.707l-6.414 6.414a1 1 0 00-.293.707V17l-4 4v-6.586a1 1 0 00-.293-.707L3.293 7.293A1 1 0 013 6.586V4z" />
            </svg>
          </button>
          <button className="p-1.5 hover:bg-gray-100 dark:hover:bg-gray-700 rounded-lg">
            <svg className="w-4 h-4 text-gray-500" fill="currentColor" viewBox="0 0 20 20">
              <path d="M10 6a2 2 0 110-4 2 2 0 010 4zM10 12a2 2 0 110-4 2 2 0 010 4zM10 18a2 2 0 110-4 2 2 0 010 4z" />
            </svg>
          </button>
        </div>
      </div>
      {!data || !data.datasets || !data.datasets.length ? (
        <div className="h-48 flex items-center justify-center text-gray-400">
          <div className="text-center">
            <div className="text-xs">No chart data available</div>
          </div>
        </div>
      ) : (
        <GroupedBarChart data={data} />
      )}
    </div>
  );
};

// Chart Card Component (Compact Version)
const ChartCard: React.FC<{ title: string; data: any; type: 'bar' | 'pie' }> = ({ title, data, type }) => {
  return (
    <div className="bg-white dark:bg-gray-800 rounded-lg shadow hover:shadow-md transition-all p-5 border border-gray-200 dark:border-gray-700">
      <h3 className="text-base font-semibold text-gray-800 dark:text-white mb-4">{title}</h3>
      {!data || !data.datasets || !data.datasets.length ? (
        <div className="h-64 flex items-center justify-center text-gray-400">
          <div className="text-center">
            <div className="text-sm">No chart data available</div>
          </div>
        </div>
      ) : type === 'pie' ? (
        <PieChart data={data} />
      ) : (
        <BarChart data={data} />
      )}
    </div>
  );
};

// Helper: Generate colors
function generateColors(count: number): string[] {
  const colors = [
    '#8B5CF6', // Purple
    '#6366F1', // Indigo  
    '#3B82F6', // Blue
    '#06B6D4', // Cyan
    '#14B8A6', // Teal
    '#EC4899', // Pink
    '#A855F7', // Purple variant
    '#0EA5E9', // Sky blue
    '#10B981', // Emerald
    '#F472B6', // Pink variant
    '#7C3AED', // Violet
    '#2DD4BF', // Teal variant
  ];
  return Array.from({ length: count }, (_, i) => colors[i % colors.length]);
}

export default ModernDashboard;

