<?php

namespace Modules\DailyReports\Http\Controllers;

use App\Http\Controllers\Controller;
use Carbon\Carbon;
use Illuminate\Http\Request;
use Modules\DailyReports\Models\DailyReport;
use Modules\ProjectManagement\Models\Project;
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
use PhpOffice\PhpSpreadsheet\Style\Alignment;
use PhpOffice\PhpSpreadsheet\Style\Border;
use PhpOffice\PhpSpreadsheet\Style\Fill;

class DailyReportExportController extends Controller
{
    public function export(DailyReport $dailyReport)
    {
        $dailyReport->load(['project', 'user', 'labors', 'equipment', 'activities', 'materials', 'issues']);

        $spreadsheet = new Spreadsheet();
        $sheet = $spreadsheet->getActiveSheet();
        $sheet->setTitle('Daily Report');
        $sheet->setShowGridlines(true);

        // Styling helpers
        $headerStyle = [
            'font' => [
                'name' => 'Arial',
                'size' => 16,
                'bold' => true,
                'color' => ['rgb' => 'FFFFFF'],
            ],
            'fill' => [
                'fillType' => Fill::FILL_SOLID,
                'startColor' => ['rgb' => '334155'], // Slate 700
            ],
            'alignment' => [
                'horizontal' => Alignment::HORIZONTAL_CENTER,
                'vertical' => Alignment::VERTICAL_CENTER,
            ],
        ];

        $subHeaderStyle = [
            'font' => [
                'name' => 'Arial',
                'size' => 11,
                'bold' => true,
                'color' => ['rgb' => '334155'],
            ],
            'fill' => [
                'fillType' => Fill::FILL_SOLID,
                'startColor' => ['rgb' => 'F1F5F9'], // Slate 100
            ],
            'alignment' => [
                'vertical' => Alignment::VERTICAL_CENTER,
            ],
            'borders' => [
                'bottom' => [
                    'borderStyle' => Border::BORDER_MEDIUM,
                    'color' => ['rgb' => 'CBD5E1'],
                ],
            ],
        ];

        $sectionTitleStyle = [
            'font' => [
                'name' => 'Arial',
                'size' => 12,
                'bold' => true,
                'color' => ['rgb' => '0F172A'], // Slate 900
            ],
            'fill' => [
                'fillType' => Fill::FILL_SOLID,
                'startColor' => ['rgb' => 'E2E8F0'], // Slate 200
            ],
            'alignment' => [
                'vertical' => Alignment::VERTICAL_CENTER,
            ],
        ];

        $boldLabelStyle = [
            'font' => [
                'name' => 'Arial',
                'size' => 10,
                'bold' => true,
                'color' => ['rgb' => '475569'],
            ],
        ];

        $tableHeaderStyle = [
            'font' => [
                'name' => 'Arial',
                'size' => 10,
                'bold' => true,
                'color' => ['rgb' => '475569'],
            ],
            'fill' => [
                'fillType' => Fill::FILL_SOLID,
                'startColor' => ['rgb' => 'F8FAFC'],
            ],
            'borders' => [
                'bottom' => [
                    'borderStyle' => Border::BORDER_THIN,
                    'color' => ['rgb' => 'E2E8F0'],
                ],
            ],
        ];

        $borderBottomThin = [
            'borders' => [
                'bottom' => [
                    'borderStyle' => Border::BORDER_THIN,
                    'color' => ['rgb' => 'F1F5F9'],
                ],
            ],
        ];

        // 1. Title Block
        $sheet->mergeCells('A1:F1');
        $sheet->setCellValue('A1', 'GSB CONSTRUCTION - DAILY SITE REPORT');
        $sheet->getStyle('A1:F1')->applyFromArray($headerStyle);
        $sheet->getRowDimension(1)->setRowHeight(40);

        // 2. Metadata Block
        $sheet->mergeCells('A3:F3');
        $sheet->setCellValue('A3', ' REPORT METADATA');
        $sheet->getStyle('A3:F3')->applyFromArray($subHeaderStyle);
        $sheet->getRowDimension(3)->setRowHeight(25);

        // Row 4
        $sheet->setCellValue('A4', 'Report Number:');
        $sheet->setCellValue('B4', $dailyReport->report_number);
        $sheet->setCellValue('C4', 'Report Date:');
        $sheet->setCellValue('D4', $dailyReport->report_date ? $dailyReport->report_date->format('Y-m-d') : 'N/A');
        $sheet->setCellValue('E4', 'Prepared By:');
        $sheet->setCellValue('F4', $dailyReport->user ? $dailyReport->user->name : 'N/A');

        // Row 5
        $sheet->setCellValue('A5', 'Project Code:');
        $sheet->setCellValue('B5', $dailyReport->project ? $dailyReport->project->code : 'N/A');
        $sheet->setCellValue('C5', 'Project Name:');
        $sheet->mergeCells('D5:F5');
        $sheet->setCellValue('D5', $dailyReport->project ? $dailyReport->project->name : 'N/A');

        // Row 6
        $sheet->setCellValue('A6', 'Weather:');
        $sheet->setCellValue('B6', $dailyReport->weather ?: 'N/A');
        $sheet->setCellValue('C6', 'Temperature:');
        $sheet->setCellValue('D6', $dailyReport->temperature ? $dailyReport->temperature . ' °C' : 'N/A');
        $sheet->setCellValue('E6', 'Precipitation:');
        $sheet->setCellValue('F6', $dailyReport->precipitation ?: 'N/A');

        // Row 7
        $sheet->setCellValue('A7', 'Wind:');
        $sheet->setCellValue('B7', $dailyReport->wind ?: 'N/A');

        $sheet->getStyle('A4')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('C4')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('E4')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('A5')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('C5')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('A6')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('C6')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('E6')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('A7')->applyFromArray($boldLabelStyle);

        // 2.5. Summary Dashboard Block
        $sheet->mergeCells('A9:F9');
        $sheet->setCellValue('A9', ' SUMMARY & KEY METRICS');
        $sheet->getStyle('A9:F9')->applyFromArray($subHeaderStyle);
        $sheet->getRowDimension(9)->setRowHeight(25);

        // Calculate summary metrics
        $totalWorkers = 0;
        $totalManHours = 0;
        foreach ($dailyReport->labors as $lab) {
            $totalWorkers += $lab->workers_count;
            $totalManHours += $lab->workers_count * ($lab->hours ?: 0);
        }
        $totalEquipmentHours = $dailyReport->equipment->sum('hours_used') ?: 0;
        $avgProgress = $dailyReport->activities->isEmpty() ? 0 : ($dailyReport->activities->avg('percentage_completed') ?: 0);

        // Row 10
        $sheet->setCellValue('A10', 'Tasks Logged:');
        $sheet->setCellValue('B10', count($dailyReport->activities));
        $sheet->setCellValue('C10', 'Materials Logged:');
        $sheet->setCellValue('D10', count($dailyReport->materials));
        $sheet->setCellValue('E10', 'Manpower Count:');
        $sheet->setCellValue('F10', $totalWorkers);

        // Row 11
        $sheet->setCellValue('A11', 'Avg. Progress:');
        $sheet->setCellValue('B11', number_format($avgProgress, 1) . '%');
        $sheet->setCellValue('C11', 'Reported Issues:');
        $sheet->setCellValue('D11', count($dailyReport->issues));
        $sheet->setCellValue('E11', 'Total Man-Hours:');
        $sheet->setCellValue('F11', number_format($totalManHours, 1) . ' hrs');

        // Row 12
        $sheet->setCellValue('A12', 'Active Equipment:');
        $sheet->setCellValue('B12', count($dailyReport->equipment));
        $sheet->setCellValue('C12', 'Equipment Hours:');
        $sheet->setCellValue('D12', number_format($totalEquipmentHours, 1) . ' hrs');

        $sheet->getStyle('A10')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('C10')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('E10')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('A11')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('C11')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('E11')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('A12')->applyFromArray($boldLabelStyle);
        $sheet->getStyle('C12')->applyFromArray($boldLabelStyle);

        $rowIdx = 14;

        // 3. Section A: Tasks
        $sheet->mergeCells("A{$rowIdx}:F{$rowIdx}");
        $sheet->setCellValue("A{$rowIdx}", ' 1. TASKS');
        $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($sectionTitleStyle);
        $sheet->getRowDimension($rowIdx)->setRowHeight(25);
        $rowIdx++;

        // Table Headers
        $sheet->mergeCells("A{$rowIdx}:C{$rowIdx}");
        $sheet->setCellValue("A{$rowIdx}", 'Task Name / Activity');
        $sheet->setCellValue("D{$rowIdx}", 'Zone / Area');
        $sheet->setCellValue("E{$rowIdx}", 'Qty Completed');
        $sheet->setCellValue("F{$rowIdx}", 'Completion %');
        $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($tableHeaderStyle);
        $rowIdx++;

        if ($dailyReport->activities->isEmpty()) {
            $sheet->mergeCells("A{$rowIdx}:F{$rowIdx}");
            $sheet->setCellValue("A{$rowIdx}", 'No work activities reported for this shift.');
            $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray(['font' => ['italic' => true, 'color' => ['rgb' => '94A3B8']]]);
            $rowIdx++;
        } else {
            foreach ($dailyReport->activities as $act) {
                $sheet->mergeCells("A{$rowIdx}:C{$rowIdx}");
                $sheet->setCellValue("A{$rowIdx}", $act->task_name);
                $sheet->setCellValue("D{$rowIdx}", $act->zone_area ?: 'N/A');
                $sheet->setCellValue("E{$rowIdx}", $act->quantity_completed ?: 'N/A');
                $sheet->setCellValue("F{$rowIdx}", $act->percentage_completed ? $act->percentage_completed . '%' : '0%');
                $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($borderBottomThin);
                $rowIdx++;
            }
        }
        $rowIdx++;

        // 4. Section B: Materials
        $sheet->mergeCells("A{$rowIdx}:F{$rowIdx}");
        $sheet->setCellValue("A{$rowIdx}", ' 2. MATERIALS');
        $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($sectionTitleStyle);
        $sheet->getRowDimension($rowIdx)->setRowHeight(25);
        $rowIdx++;

        // Table Headers
        $sheet->mergeCells("A{$rowIdx}:C{$rowIdx}");
        $sheet->setCellValue("A{$rowIdx}", 'Material Name');
        $sheet->setCellValue("D{$rowIdx}", 'Quantity Received / Used');
        $sheet->mergeCells("E{$rowIdx}:F{$rowIdx}");
        $sheet->setCellValue("E{$rowIdx}", 'Condition / Remarks');
        $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($tableHeaderStyle);
        $rowIdx++;

        if ($dailyReport->materials->isEmpty()) {
            $sheet->mergeCells("A{$rowIdx}:F{$rowIdx}");
            $sheet->setCellValue("A{$rowIdx}", 'No materials logged for this date.');
            $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray(['font' => ['italic' => true, 'color' => ['rgb' => '94A3B8']]]);
            $rowIdx++;
        } else {
            foreach ($dailyReport->materials as $mat) {
                $sheet->mergeCells("A{$rowIdx}:C{$rowIdx}");
                $sheet->setCellValue("A{$rowIdx}", $mat->material_name);
                $sheet->setCellValue("D{$rowIdx}", $mat->quantity_received);
                $sheet->mergeCells("E{$rowIdx}:F{$rowIdx}");
                $sheet->setCellValue("E{$rowIdx}", $mat->condition ?: 'Good');
                $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($borderBottomThin);
                $rowIdx++;
            }
        }
        $rowIdx++;

        // 5. Section C: Labor & Manpower
        $sheet->mergeCells("A{$rowIdx}:F{$rowIdx}");
        $sheet->setCellValue("A{$rowIdx}", ' 3. MANPOWER/LABOR');
        $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($sectionTitleStyle);
        $sheet->getRowDimension($rowIdx)->setRowHeight(25);
        $rowIdx++;

        // Table Headers
        $sheet->mergeCells("A{$rowIdx}:B{$rowIdx}");
        $sheet->setCellValue("A{$rowIdx}", 'Labor Trade / Profession');
        $sheet->setCellValue("C{$rowIdx}", 'Workers Count');
        $sheet->setCellValue("D{$rowIdx}", 'Hours Rendered');
        $sheet->mergeCells("E{$rowIdx}:F{$rowIdx}");
        $sheet->setCellValue("E{$rowIdx}", 'Notes / Details');
        $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($tableHeaderStyle);
        $rowIdx++;

        if ($dailyReport->labors->isEmpty()) {
            $sheet->mergeCells("A{$rowIdx}:F{$rowIdx}");
            $sheet->setCellValue("A{$rowIdx}", 'No labor resources logged.');
            $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray(['font' => ['italic' => true, 'color' => ['rgb' => '94A3B8']]]);
            $rowIdx++;
        } else {
            foreach ($dailyReport->labors as $lab) {
                $sheet->mergeCells("A{$rowIdx}:B{$rowIdx}");
                $sheet->setCellValue("A{$rowIdx}", $lab->trade);
                $sheet->setCellValue("C{$rowIdx}", $lab->workers_count);
                $sheet->setCellValue("D{$rowIdx}", $lab->hours);
                $sheet->mergeCells("E{$rowIdx}:F{$rowIdx}");
                $sheet->setCellValue("E{$rowIdx}", $lab->notes ?: '');
                $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($borderBottomThin);
                $rowIdx++;
            }
        }
        $rowIdx++;

        // 6. Section D: Equipment Usage
        $sheet->mergeCells("A{$rowIdx}:F{$rowIdx}");
        $sheet->setCellValue("A{$rowIdx}", ' 4. EQUIPMENT');
        $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($sectionTitleStyle);
        $sheet->getRowDimension($rowIdx)->setRowHeight(25);
        $rowIdx++;

        // Table Headers
        $sheet->mergeCells("A{$rowIdx}:C{$rowIdx}");
        $sheet->setCellValue("A{$rowIdx}", 'Equipment Name');
        $sheet->setCellValue("D{$rowIdx}", 'Hours Used');
        $sheet->mergeCells("E{$rowIdx}:F{$rowIdx}");
        $sheet->setCellValue("E{$rowIdx}", 'Status (Active / Idle)');
        $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($tableHeaderStyle);
        $rowIdx++;

        if ($dailyReport->equipment->isEmpty()) {
            $sheet->mergeCells("A{$rowIdx}:F{$rowIdx}");
            $sheet->setCellValue("A{$rowIdx}", 'No equipment usage logged.');
            $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray(['font' => ['italic' => true, 'color' => ['rgb' => '94A3B8']]]);
            $rowIdx++;
        } else {
            foreach ($dailyReport->equipment as $eq) {
                $sheet->mergeCells("A{$rowIdx}:C{$rowIdx}");
                $sheet->setCellValue("A{$rowIdx}", $eq->equipment_name);
                $sheet->setCellValue("D{$rowIdx}", $eq->hours_used);
                $sheet->mergeCells("E{$rowIdx}:F{$rowIdx}");
                $sheet->setCellValue("E{$rowIdx}", ucfirst($eq->status));
                $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($borderBottomThin);
                $rowIdx++;
            }
        }
        $rowIdx++;

        // 7. Section E: Reported Issues & Delays
        $sheet->mergeCells("A{$rowIdx}:F{$rowIdx}");
        $sheet->setCellValue("A{$rowIdx}", ' 5. ISSUES & CONCERN');
        $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($sectionTitleStyle);
        $sheet->getRowDimension($rowIdx)->setRowHeight(25);
        $rowIdx++;

        // Table Headers
        $sheet->mergeCells("A{$rowIdx}:B{$rowIdx}");
        $sheet->setCellValue("A{$rowIdx}", 'Issue / Delay Type');
        $sheet->mergeCells("C{$rowIdx}:E{$rowIdx}");
        $sheet->setCellValue("C{$rowIdx}", 'Description');
        $sheet->setCellValue("F{$rowIdx}", 'Delay Impact (Hrs)');
        $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($tableHeaderStyle);
        $rowIdx++;

        if ($dailyReport->issues->isEmpty()) {
            $sheet->mergeCells("A{$rowIdx}:F{$rowIdx}");
            $sheet->setCellValue("A{$rowIdx}", 'No major issues or delays reported.');
            $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray(['font' => ['italic' => true, 'color' => ['rgb' => '94A3B8']]]);
            $rowIdx++;
        } else {
            foreach ($dailyReport->issues as $iss) {
                $sheet->mergeCells("A{$rowIdx}:B{$rowIdx}");
                $sheet->setCellValue("A{$rowIdx}", ucfirst(str_replace('_', ' ', $iss->issue_type)));
                $sheet->mergeCells("C{$rowIdx}:E{$rowIdx}");
                $sheet->setCellValue("C{$rowIdx}", $iss->description);
                $sheet->setCellValue("F{$rowIdx}", $iss->delay_impact ?: '0');
                $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($borderBottomThin);
                $rowIdx++;
            }
        }
        $rowIdx++;

        // 8. General Remarks
        $sheet->mergeCells("A{$rowIdx}:F{$rowIdx}");
        $sheet->setCellValue("A{$rowIdx}", ' GENERAL REMARKS & NOTES');
        $sheet->getStyle("A{$rowIdx}:F{$rowIdx}")->applyFromArray($subHeaderStyle);
        $rowIdx++;

        $sheet->mergeCells("A{$rowIdx}:F" . ($rowIdx + 3));
        $sheet->setCellValue("A{$rowIdx}", $dailyReport->remarks ?: 'No additional remarks entered.');
        $sheet->getStyle("A{$rowIdx}:F" . ($rowIdx + 3))->applyFromArray([
            'alignment' => [
                'vertical' => Alignment::VERTICAL_TOP,
                'wrapText' => true
            ],
            'font' => ['italic' => !$dailyReport->remarks]
        ]);

        // Auto-fit column widths
        foreach (range('A', 'F') as $col) {
            $sheet->getColumnDimension($col)->setAutoSize(true);
        }

        // Output Excel response
        $filename = 'DailyReport_' . ($dailyReport->project ? $dailyReport->project->code : '') . '_' . $dailyReport->report_date->format('Ymd') . '.xlsx';
        
        header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        header('Content-Disposition: attachment;filename="' . $filename . '"');
        header('Cache-Control: max-age=0');

        $writer = new Xlsx($spreadsheet);
        $writer->save('php://output');
        exit;
    }

    public function pdf(DailyReport $dailyReport)
    {
        $dailyReport->load(['project', 'user', 'labors', 'equipment', 'activities', 'materials', 'issues']);

        // Calculate summary metrics
        $totalWorkers = 0;
        $totalManHours = 0;
        foreach ($dailyReport->labors as $lab) {
            $totalWorkers += $lab->workers_count;
            $totalManHours += $lab->workers_count * ($lab->hours ?: 0);
        }

        $totalEquipmentHours = 0;
        foreach ($dailyReport->equipment as $eq) {
            $totalEquipmentHours += $eq->hours_used ?: 0;
        }

        $avgProgress = 0;
        if (!$dailyReport->activities->isEmpty()) {
            $avgProgress = $dailyReport->activities->avg('percentage_completed') ?: 0;
        }

        $summary = [
            'total_workers' => $totalWorkers,
            'total_man_hours' => $totalManHours,
            'total_equipment_hours' => $totalEquipmentHours,
            'avg_progress' => $avgProgress,
        ];

        $pdf = \Barryvdh\DomPDF\Facade\Pdf::loadView('dailyreports::pdf.daily-report', [
            'report' => $dailyReport,
            'summary' => $summary,
        ]);

        $filename = 'DailyReport_' . ($dailyReport->project ? $dailyReport->project->code : '') . '_' . $dailyReport->report_date->format('Ymd') . '.pdf';
        
        return $pdf->download($filename);
    }

    public function exportRange(Request $request)
    {
        $request->validate([
            'start_date' => 'required|date',
            'end_date' => 'required|date|after_or_equal:start_date',
            'project' => 'nullable|string',
        ]);

        $startDate = Carbon::parse($request->input('start_date'))->startOfDay();
        $endDate = Carbon::parse($request->input('end_date'))->endOfDay();
        $projectUlid = $request->input('project');

        $project = $projectUlid ? Project::where('ulid', $projectUlid)->first() : null;

        $query = DailyReport::with(['project', 'user', 'labors', 'equipment', 'activities', 'materials', 'issues'])
            ->whereBetween('report_date', [$startDate->format('Y-m-d'), $endDate->format('Y-m-d')])
            ->orderBy('report_date', 'asc');

        if ($project) {
            $query->where('project_id', $project->id);
        }

        $reports = $query->get();

        // 1. Manpower Category Aggregation
        $allLabors = $reports->flatMap->labors;
        $totalPeriodManHours = $allLabors->sum(fn ($l) => $l->workers_count * ($l->hours ?: 0));
        $laborCategorySummary = $allLabors->groupBy(fn ($l) => $l->trade ?: 'Unspecified Trade')
            ->map(function ($group, $trade) use ($totalPeriodManHours) {
                $workerDays = $group->sum('workers_count');
                $manHours = $group->sum(fn ($l) => $l->workers_count * ($l->hours ?: 0));
                $activeCount = $group->count();
                $percent = $totalPeriodManHours > 0 ? ($manHours / $totalPeriodManHours) * 100 : 0;

                return [
                    'trade' => $trade,
                    'worker_days' => $workerDays,
                    'total_man_hours' => $manHours,
                    'days_active' => $activeCount,
                    'percent_share' => round($percent, 1),
                ];
            })->values()->sortByDesc('total_man_hours')->values();

        // 2. Equipment Category Aggregation
        $allEquipment = $reports->flatMap->equipment;
        $totalPeriodEquipHours = $allEquipment->sum('hours_used');
        $equipmentCategorySummary = $allEquipment->groupBy(fn ($eq) => $eq->equipment_name ?: 'Unspecified Equipment')
            ->map(function ($group, $name) use ($totalPeriodEquipHours) {
                $hours = $group->sum('hours_used');
                $activeCount = $group->count();
                $percent = $totalPeriodEquipHours > 0 ? ($hours / $totalPeriodEquipHours) * 100 : 0;
                $latestStatus = $group->last()->status ?? 'Active';

                return [
                    'equipment_name' => $name,
                    'total_hours' => $hours,
                    'days_active' => $activeCount,
                    'percent_share' => round($percent, 1),
                    'latest_status' => $latestStatus,
                ];
            })->values()->sortByDesc('total_hours')->values();

        // 3. Materials Category Aggregation
        $allMaterials = $reports->flatMap->materials;
        $materialsCategorySummary = $allMaterials->groupBy(fn ($m) => $m->material_name ?: 'General Material')
            ->map(function ($group, $name) {
                $deliveriesCount = $group->count();
                $quantities = $group->pluck('quantity_received')->filter()->all();
                $numericSum = 0;
                $unit = '';
                foreach ($quantities as $q) {
                    if (preg_match('/^([0-9.]+)\s*(.*)$/', trim($q), $matches)) {
                        $numericSum += (float) $matches[1];
                        if (empty($unit) && !empty($matches[2])) {
                            $unit = $matches[2];
                        }
                    }
                }
                $qtyDisplay = $numericSum > 0 ? (string)$numericSum : (implode(', ', array_slice($quantities, 0, 3)) ?: '—');
                $conditions = $group->pluck('condition')->filter()->unique()->implode(', ') ?: 'Good';

                return [
                    'material_name' => $name,
                    'total_quantity' => $qtyDisplay,
                    'unit' => $unit ?: 'units',
                    'deliveries_count' => $deliveriesCount,
                    'condition_summary' => $conditions,
                ];
            })->values()->sortByDesc('deliveries_count')->values();

        // 4. Activities Category Aggregation
        $allActivities = $reports->flatMap->activities;
        $activitiesCategorySummary = $allActivities->groupBy(fn ($a) => $a->task_name ?: 'General Works')
            ->map(function ($group, $name) {
                $zones = $group->pluck('zone_area')->filter()->unique()->implode(', ') ?: 'Site Wide';
                $highestProgress = $group->max('percentage_completed') ?: 0;
                $daysWorked = $group->count();

                return [
                    'task_name' => $name,
                    'zones' => $zones,
                    'highest_progress' => $highestProgress,
                    'days_worked' => $daysWorked,
                ];
            })->values()->sortByDesc('days_worked')->values();

        // 5. Issues Category Aggregation
        $allIssues = $reports->flatMap->issues;
        $issuesCategorySummary = $allIssues->groupBy(fn ($i) => $i->issue_type ?: 'General')
            ->map(function ($group, $type) {
                $count = $group->count();
                $resolved = $group->whereNotNull('resolved_at')->count();
                $delays = $group->pluck('delay_impact')->filter()->all();

                return [
                    'issue_type' => $type,
                    'incident_count' => $count,
                    'resolved_count' => $resolved,
                    'pending_count' => $count - $resolved,
                    'delay_impact_summary' => !empty($delays) ? implode('; ', array_slice($delays, 0, 3)) : 'None reported',
                ];
            })->values()->sortByDesc('incident_count')->values();

        $spreadsheet = new Spreadsheet();
        
        // Style definitions
        $headerStyle = [
            'font' => ['name' => 'Arial', 'size' => 13, 'bold' => true, 'color' => ['rgb' => 'FFFFFF']],
            'fill' => ['fillType' => Fill::FILL_SOLID, 'startColor' => ['rgb' => '1E293B']], // Slate 800
            'alignment' => ['horizontal' => Alignment::HORIZONTAL_CENTER, 'vertical' => Alignment::VERTICAL_CENTER],
        ];

        $sectionHeaderStyle = [
            'font' => ['name' => 'Arial', 'size' => 11, 'bold' => true, 'color' => ['rgb' => 'FFFFFF']],
            'fill' => ['fillType' => Fill::FILL_SOLID, 'startColor' => ['rgb' => '0F766E']], // Teal 700
            'alignment' => ['vertical' => Alignment::VERTICAL_CENTER],
        ];

        $tableHeaderStyle = [
            'font' => ['name' => 'Arial', 'size' => 9.5, 'bold' => true, 'color' => ['rgb' => 'FFFFFF']],
            'fill' => ['fillType' => Fill::FILL_SOLID, 'startColor' => ['rgb' => '334155']], // Slate 700
            'alignment' => ['vertical' => Alignment::VERTICAL_CENTER],
            'borders' => ['allBorders' => ['borderStyle' => Border::BORDER_THIN, 'color' => ['rgb' => '64748B']]],
        ];

        $totalRowStyle = [
            'font' => ['name' => 'Arial', 'size' => 9.5, 'bold' => true, 'color' => ['rgb' => '0F172A']],
            'fill' => ['fillType' => Fill::FILL_SOLID, 'startColor' => ['rgb' => 'E2E8F0']], // Slate 200
            'borders' => ['allBorders' => ['borderStyle' => Border::BORDER_THIN, 'color' => ['rgb' => '94A3B8']]],
        ];

        $thinBorder = [
            'borders' => ['allBorders' => ['borderStyle' => Border::BORDER_THIN, 'color' => ['rgb' => 'CBD5E1']]],
        ];

        // ----------------------------------------------------
        // 1. SHEET: CONSOLIDATED OVERVIEW & DAILY SUMMARY
        // ----------------------------------------------------
        $sheet = $spreadsheet->getActiveSheet();
        $sheet->setTitle('Consolidated Overview');
        $sheet->setShowGridlines(true);

        $sheet->mergeCells('A1:J1');
        $sheet->setCellValue('A1', 'CONSOLIDATED DAILY CONSTRUCTION REPORTS — PERIOD OVERVIEW');
        $sheet->getStyle('A1:J1')->applyFromArray($headerStyle);
        $sheet->getRowDimension(1)->setRowHeight(32);

        $sheet->setCellValue('A2', 'Project: ' . ($project ? "{$project->name} ({$project->code})" : 'All Projects'));
        $sheet->setCellValue('A3', 'Date Range: ' . $startDate->format('M d, Y') . ' to ' . $endDate->format('M d, Y'));
        $sheet->setCellValue('A4', 'Total Reports Filed: ' . $reports->count() . ' day(s)');
        $sheet->setCellValue('D2', 'Total Man-Days: ' . number_format($allLabors->sum('workers_count')));
        $sheet->setCellValue('D3', 'Total Man-Hours: ' . number_format($totalPeriodManHours, 1) . ' hrs');
        $sheet->setCellValue('D4', 'Total Equip. Hours: ' . number_format($totalPeriodEquipHours, 1) . ' hrs');
        $sheet->setCellValue('G2', 'Activities Logged: ' . $allActivities->count());
        $sheet->setCellValue('G3', 'Materials Tracked: ' . $allMaterials->count());
        $sheet->setCellValue('G4', 'Issues & Delays: ' . $allIssues->count());
        $sheet->getStyle('A2:G4')->getFont()->setBold(true)->setSize(9.5);

        $headers = ['Date', 'Report #', 'Project', 'Prepared By', 'Weather', 'Workers', 'Man-Hours', 'Equip. Hours', 'Tasks', 'Issues'];
        $cols = range('A', 'J');
        $rowIdx = 6;

        foreach ($headers as $k => $h) {
            $sheet->setCellValue("{$cols[$k]}{$rowIdx}", $h);
        }
        $sheet->getStyle("A{$rowIdx}:J{$rowIdx}")->applyFromArray($tableHeaderStyle);
        $sheet->getRowDimension($rowIdx)->setRowHeight(24);
        $rowIdx++;

        foreach ($reports as $r) {
            $workers = $r->labors->sum('workers_count');
            $manHours = $r->labors->sum(fn ($l) => $l->workers_count * ($l->hours ?: 0));
            $equipHours = $r->equipment->sum('hours_used');

            $sheet->setCellValue("A{$rowIdx}", $r->report_date ? $r->report_date->format('Y-m-d') : '');
            $sheet->setCellValue("B{$rowIdx}", $r->report_number ?: '#' . $r->id);
            $sheet->setCellValue("C{$rowIdx}", $r->project ? $r->project->code : '—');
            $sheet->setCellValue("D{$rowIdx}", $r->user ? $r->user->name : 'N/A');
            $sheet->setCellValue("E{$rowIdx}", $r->weather ?: '—');
            $sheet->setCellValue("F{$rowIdx}", $workers);
            $sheet->setCellValue("G{$rowIdx}", number_format($manHours, 1));
            $sheet->setCellValue("H{$rowIdx}", number_format($equipHours, 1));
            $sheet->setCellValue("I{$rowIdx}", $r->activities->count());
            $sheet->setCellValue("J{$rowIdx}", $r->issues->count());

            $sheet->getStyle("A{$rowIdx}:J{$rowIdx}")->applyFromArray($thinBorder);
            $rowIdx++;
        }

        // Summary Row
        $sheet->setCellValue("A{$rowIdx}", 'TOTAL FOR PERIOD');
        $sheet->mergeCells("A{$rowIdx}:E{$rowIdx}");
        $sheet->setCellValue("F{$rowIdx}", $allLabors->sum('workers_count'));
        $sheet->setCellValue("G{$rowIdx}", number_format($totalPeriodManHours, 1));
        $sheet->setCellValue("H{$rowIdx}", number_format($totalPeriodEquipHours, 1));
        $sheet->setCellValue("I{$rowIdx}", $allActivities->count());
        $sheet->setCellValue("J{$rowIdx}", $allIssues->count());
        $sheet->getStyle("A{$rowIdx}:J{$rowIdx}")->applyFromArray($totalRowStyle);

        foreach ($cols as $col) {
            $sheet->getColumnDimension($col)->setAutoSize(true);
        }

        // ----------------------------------------------------
        // 2. SHEET: MANPOWER & LABOR CATEGORY SUMMATION
        // ----------------------------------------------------
        $sheetLabor = $spreadsheet->createSheet();
        $sheetLabor->setTitle('Manpower by Category');
        $sheetLabor->setShowGridlines(true);

        $sheetLabor->mergeCells('A1:F1');
        $sheetLabor->setCellValue('A1', 'MANPOWER & LABOR — SUMMATION PER TRADE / CATEGORY');
        $sheetLabor->getStyle('A1:F1')->applyFromArray($sectionHeaderStyle);
        $sheetLabor->getRowDimension(1)->setRowHeight(28);

        $labSumHeaders = ['Trade / Labor Category', 'Total Worker-Days', 'Total Man-Hours (hrs)', 'Days Active', 'Avg Workers / Active Day', '% Share'];
        $labSumCols = range('A', 'F');
        $lRow = 3;

        foreach ($labSumHeaders as $k => $h) {
            $sheetLabor->setCellValue("{$labSumCols[$k]}{$lRow}", $h);
        }
        $sheetLabor->getStyle("A{$lRow}:F{$lRow}")->applyFromArray($tableHeaderStyle);
        $lRow++;

        foreach ($laborCategorySummary as $cat) {
            $avgW = $cat['days_active'] > 0 ? round($cat['worker_days'] / $cat['days_active'], 1) : $cat['worker_days'];
            $sheetLabor->setCellValue("A{$lRow}", $cat['trade']);
            $sheetLabor->setCellValue("B{$lRow}", $cat['worker_days']);
            $sheetLabor->setCellValue("C{$lRow}", number_format($cat['total_man_hours'], 1));
            $sheetLabor->setCellValue("D{$lRow}", $cat['days_active']);
            $sheetLabor->setCellValue("E{$lRow}", $avgW);
            $sheetLabor->setCellValue("F{$lRow}", $cat['percent_share'] . '%');
            $sheetLabor->getStyle("A{$lRow}:F{$lRow}")->applyFromArray($thinBorder);
            $lRow++;
        }

        // Total Row
        $sheetLabor->setCellValue("A{$lRow}", 'TOTAL MANPOWER');
        $sheetLabor->setCellValue("B{$lRow}", $allLabors->sum('workers_count'));
        $sheetLabor->setCellValue("C{$lRow}", number_format($totalPeriodManHours, 1));
        $sheetLabor->setCellValue("D{$lRow}", $reports->count());
        $sheetLabor->setCellValue("E{$lRow}", $reports->count() > 0 ? round($allLabors->sum('workers_count') / $reports->count(), 1) : 0);
        $sheetLabor->setCellValue("F{$lRow}", '100.0%');
        $sheetLabor->getStyle("A{$lRow}:F{$lRow}")->applyFromArray($totalRowStyle);
        $lRow += 3;

        // Itemized Daily Log Section
        $sheetLabor->mergeCells("A{$lRow}:G{$lRow}");
        $sheetLabor->setCellValue("A{$lRow}", 'ITEMIZED DAILY MANPOWER LOG');
        $sheetLabor->getStyle("A{$lRow}:G{$lRow}")->applyFromArray($headerStyle);
        $lRow++;

        $labDetailHeaders = ['Date', 'Report #', 'Trade / Category', 'Workers Count', 'Hours/Worker', 'Total Man-Hours', 'Notes / Location'];
        $labDetailCols = range('A', 'G');
        foreach ($labDetailHeaders as $k => $h) {
            $sheetLabor->setCellValue("{$labDetailCols[$k]}{$lRow}", $h);
        }
        $sheetLabor->getStyle("A{$lRow}:G{$lRow}")->applyFromArray($tableHeaderStyle);
        $lRow++;

        foreach ($reports as $r) {
            foreach ($r->labors as $lab) {
                $totalH = $lab->workers_count * ($lab->hours ?: 0);
                $sheetLabor->setCellValue("A{$lRow}", $r->report_date ? $r->report_date->format('Y-m-d') : '');
                $sheetLabor->setCellValue("B{$lRow}", $r->report_number ?: '#' . $r->id);
                $sheetLabor->setCellValue("C{$lRow}", $lab->trade ?: 'Labor');
                $sheetLabor->setCellValue("D{$lRow}", $lab->workers_count);
                $sheetLabor->setCellValue("E{$lRow}", $lab->hours ?: 0);
                $sheetLabor->setCellValue("F{$lRow}", number_format($totalH, 1));
                $sheetLabor->setCellValue("G{$lRow}", $lab->notes ?: '—');
                $sheetLabor->getStyle("A{$lRow}:G{$lRow}")->applyFromArray($thinBorder);
                $lRow++;
            }
        }
        foreach ($labDetailCols as $col) {
            $sheetLabor->getColumnDimension($col)->setAutoSize(true);
        }

        // ----------------------------------------------------
        // 3. SHEET: EQUIPMENT & MACHINERY CATEGORY SUMMATION
        // ----------------------------------------------------
        $sheetEquip = $spreadsheet->createSheet();
        $sheetEquip->setTitle('Equipment by Category');
        $sheetEquip->setShowGridlines(true);

        $sheetEquip->mergeCells('A1:F1');
        $sheetEquip->setCellValue('A1', 'EQUIPMENT & MACHINERY — SUMMATION PER MODEL / CATEGORY');
        $sheetEquip->getStyle('A1:F1')->applyFromArray($sectionHeaderStyle);
        $sheetEquip->getRowDimension(1)->setRowHeight(28);

        $eqSumHeaders = ['Equipment Name / Model', 'Total Hours Operated (hrs)', 'Days Utilized', 'Avg Hours / Utilized Day', 'Latest Status', '% Share'];
        $eqSumCols = range('A', 'F');
        $eRow = 3;

        foreach ($eqSumHeaders as $k => $h) {
            $sheetEquip->setCellValue("{$eqSumCols[$k]}{$eRow}", $h);
        }
        $sheetEquip->getStyle("A{$eRow}:F{$eRow}")->applyFromArray($tableHeaderStyle);
        $eRow++;

        foreach ($equipmentCategorySummary as $eqCat) {
            $avgH = $eqCat['days_active'] > 0 ? round($eqCat['total_hours'] / $eqCat['days_active'], 1) : $eqCat['total_hours'];
            $sheetEquip->setCellValue("A{$eRow}", $eqCat['equipment_name']);
            $sheetEquip->setCellValue("B{$eRow}", number_format($eqCat['total_hours'], 1));
            $sheetEquip->setCellValue("C{$eRow}", $eqCat['days_active']);
            $sheetEquip->setCellValue("D{$eRow}", $avgH);
            $sheetEquip->setCellValue("E{$eRow}", $eqCat['latest_status']);
            $sheetEquip->setCellValue("F{$eRow}", $eqCat['percent_share'] . '%');
            $sheetEquip->getStyle("A{$eRow}:F{$eRow}")->applyFromArray($thinBorder);
            $eRow++;
        }

        // Total Row
        $sheetEquip->setCellValue("A{$eRow}", 'TOTAL EQUIPMENT');
        $sheetEquip->setCellValue("B{$eRow}", number_format($totalPeriodEquipHours, 1));
        $sheetEquip->setCellValue("C{$eRow}", $reports->count());
        $sheetEquip->setCellValue("D{$eRow}", $reports->count() > 0 ? round($totalPeriodEquipHours / $reports->count(), 1) : 0);
        $sheetEquip->setCellValue("E{$eRow}", '—');
        $sheetEquip->setCellValue("F{$eRow}", '100.0%');
        $sheetEquip->getStyle("A{$eRow}:F{$eRow}")->applyFromArray($totalRowStyle);
        $eRow += 3;

        // Itemized Daily Equipment Log
        $sheetEquip->mergeCells("A{$eRow}:E{$eRow}");
        $sheetEquip->setCellValue("A{$eRow}", 'ITEMIZED DAILY EQUIPMENT LOG');
        $sheetEquip->getStyle("A{$eRow}:E{$eRow}")->applyFromArray($headerStyle);
        $eRow++;

        $eqDetailHeaders = ['Date', 'Report #', 'Equipment Name / Model', 'Hours Used', 'Status'];
        $eqDetailCols = range('A', 'E');
        foreach ($eqDetailHeaders as $k => $h) {
            $sheetEquip->setCellValue("{$eqDetailCols[$k]}{$eRow}", $h);
        }
        $sheetEquip->getStyle("A{$eRow}:E{$eRow}")->applyFromArray($tableHeaderStyle);
        $eRow++;

        foreach ($reports as $r) {
            foreach ($r->equipment as $eq) {
                $sheetEquip->setCellValue("A{$eRow}", $r->report_date ? $r->report_date->format('Y-m-d') : '');
                $sheetEquip->setCellValue("B{$eRow}", $r->report_number ?: '#' . $r->id);
                $sheetEquip->setCellValue("C{$eRow}", $eq->equipment_name ?: 'Equipment');
                $sheetEquip->setCellValue("D{$eRow}", $eq->hours_used ?: 0);
                $sheetEquip->setCellValue("E{$eRow}", $eq->status ?: 'Active');
                $sheetEquip->getStyle("A{$eRow}:E{$eRow}")->applyFromArray($thinBorder);
                $eRow++;
            }
        }
        foreach ($eqDetailCols as $col) {
            $sheetEquip->getColumnDimension($col)->setAutoSize(true);
        }

        // ----------------------------------------------------
        // 4. SHEET: MATERIALS CATEGORY SUMMATION
        // ----------------------------------------------------
        $sheetMat = $spreadsheet->createSheet();
        $sheetMat->setTitle('Materials by Category');
        $sheetMat->setShowGridlines(true);

        $sheetMat->mergeCells('A1:E1');
        $sheetMat->setCellValue('A1', 'MATERIALS TRACKED — SUMMATION PER MATERIAL CATEGORY');
        $sheetMat->getStyle('A1:E1')->applyFromArray($sectionHeaderStyle);
        $sheetMat->getRowDimension(1)->setRowHeight(28);

        $matSumHeaders = ['Material Name / Category', 'Cumulative Quantity Received / Used', 'Unit', 'Entries Count', 'Condition Summary'];
        $matSumCols = range('A', 'E');
        $mRow = 3;

        foreach ($matSumHeaders as $k => $h) {
            $sheetMat->setCellValue("{$matSumCols[$k]}{$mRow}", $h);
        }
        $sheetMat->getStyle("A{$mRow}:E{$mRow}")->applyFromArray($tableHeaderStyle);
        $mRow++;

        foreach ($materialsCategorySummary as $mCat) {
            $sheetMat->setCellValue("A{$mRow}", $mCat['material_name']);
            $sheetMat->setCellValue("B{$mRow}", $mCat['total_quantity']);
            $sheetMat->setCellValue("C{$mRow}", $mCat['unit']);
            $sheetMat->setCellValue("D{$mRow}", $mCat['deliveries_count']);
            $sheetMat->setCellValue("E{$mRow}", $mCat['condition_summary']);
            $sheetMat->getStyle("A{$mRow}:E{$mRow}")->applyFromArray($thinBorder);
            $mRow++;
        }
        $mRow += 2;

        // Itemized Daily Materials Log
        $sheetMat->mergeCells("A{$mRow}:E{$mRow}");
        $sheetMat->setCellValue("A{$mRow}", 'ITEMIZED DAILY MATERIALS LOG');
        $sheetMat->getStyle("A{$mRow}:E{$mRow}")->applyFromArray($headerStyle);
        $mRow++;

        $matDetailHeaders = ['Date', 'Report #', 'Material Name', 'Quantity Received', 'Condition / Remarks'];
        $matDetailCols = range('A', 'E');
        foreach ($matDetailHeaders as $k => $h) {
            $sheetMat->setCellValue("{$matDetailCols[$k]}{$mRow}", $h);
        }
        $sheetMat->getStyle("A{$mRow}:E{$mRow}")->applyFromArray($tableHeaderStyle);
        $mRow++;

        foreach ($reports as $r) {
            foreach ($r->materials as $mat) {
                $sheetMat->setCellValue("A{$mRow}", $r->report_date ? $r->report_date->format('Y-m-d') : '');
                $sheetMat->setCellValue("B{$mRow}", $r->report_number ?: '#' . $r->id);
                $sheetMat->setCellValue("C{$mRow}", $mat->material_name ?: 'Material');
                $sheetMat->setCellValue("D{$mRow}", $mat->quantity_received ?: '—');
                $sheetMat->setCellValue("E{$mRow}", $mat->condition ?: 'Good');
                $sheetMat->getStyle("A{$mRow}:E{$mRow}")->applyFromArray($thinBorder);
                $mRow++;
            }
        }
        foreach ($matDetailCols as $col) {
            $sheetMat->getColumnDimension($col)->setAutoSize(true);
        }

        // ----------------------------------------------------
        // 5. SHEET: ACTIVITIES & WORK PROGRESS
        // ----------------------------------------------------
        $sheetAct = $spreadsheet->createSheet();
        $sheetAct->setTitle('Activities & Progress');
        $sheetAct->setShowGridlines(true);

        $sheetAct->mergeCells('A1:D1');
        $sheetAct->setCellValue('A1', 'WORK ACTIVITIES & TASKS — PROGRESS BY TASK / AREA');
        $sheetAct->getStyle('A1:D1')->applyFromArray($sectionHeaderStyle);
        $sheetAct->getRowDimension(1)->setRowHeight(28);

        $actSumHeaders = ['Task Name', 'Location / Zone Area', 'Highest Progress (%)', 'Days Worked'];
        $actSumCols = range('A', 'D');
        $aRow = 3;

        foreach ($actSumHeaders as $k => $h) {
            $sheetAct->setCellValue("{$actSumCols[$k]}{$aRow}", $h);
        }
        $sheetAct->getStyle("A{$aRow}:D{$aRow}")->applyFromArray($tableHeaderStyle);
        $aRow++;

        foreach ($activitiesCategorySummary as $aCat) {
            $sheetAct->setCellValue("A{$aRow}", $aCat['task_name']);
            $sheetAct->setCellValue("B{$aRow}", $aCat['zones']);
            $sheetAct->setCellValue("C{$aRow}", $aCat['highest_progress'] . '%');
            $sheetAct->setCellValue("D{$aRow}", $aCat['days_worked']);
            $sheetAct->getStyle("A{$aRow}:D{$aRow}")->applyFromArray($thinBorder);
            $aRow++;
        }
        $aRow += 2;

        // Itemized Daily Activities Log
        $sheetAct->mergeCells("A{$aRow}:F{$aRow}");
        $sheetAct->setCellValue("A{$aRow}", 'ITEMIZED DAILY ACTIVITIES LOG');
        $sheetAct->getStyle("A{$aRow}:F{$aRow}")->applyFromArray($headerStyle);
        $aRow++;

        $actDetailHeaders = ['Date', 'Report #', 'Task Name', 'Zone / Area', 'Qty Completed', 'Progress (%)'];
        $actDetailCols = range('A', 'F');
        foreach ($actDetailHeaders as $k => $h) {
            $sheetAct->setCellValue("{$actDetailCols[$k]}{$aRow}", $h);
        }
        $sheetAct->getStyle("A{$aRow}:F{$aRow}")->applyFromArray($tableHeaderStyle);
        $aRow++;

        foreach ($reports as $r) {
            foreach ($r->activities as $act) {
                $sheetAct->setCellValue("A{$aRow}", $r->report_date ? $r->report_date->format('Y-m-d') : '');
                $sheetAct->setCellValue("B{$aRow}", $r->report_number ?: '#' . $r->id);
                $sheetAct->setCellValue("C{$aRow}", $act->task_name ?: '—');
                $sheetAct->setCellValue("D{$aRow}", $act->zone_area ?: '—');
                $sheetAct->setCellValue("E{$aRow}", $act->quantity_completed ?: '—');
                $sheetAct->setCellValue("F{$aRow}", ($act->percentage_completed ?: 0) . '%');
                $sheetAct->getStyle("A{$aRow}:F{$aRow}")->applyFromArray($thinBorder);
                $aRow++;
            }
        }
        foreach ($actDetailCols as $col) {
            $sheetAct->getColumnDimension($col)->setAutoSize(true);
        }

        // ----------------------------------------------------
        // 6. SHEET: ISSUES & DELAYS CATEGORY SUMMATION
        // ----------------------------------------------------
        $sheetIss = $spreadsheet->createSheet();
        $sheetIss->setTitle('Issues & Delays');
        $sheetIss->setShowGridlines(true);

        $sheetIss->mergeCells('A1:E1');
        $sheetIss->setCellValue('A1', 'ISSUES & DELAYS — SUMMATION PER ISSUE CATEGORY');
        $sheetIss->getStyle('A1:E1')->applyFromArray($sectionHeaderStyle);
        $sheetIss->getRowDimension(1)->setRowHeight(28);

        $issSumHeaders = ['Issue Category / Type', 'Incident Count', 'Resolved Count', 'Pending Count', 'Delay Impact Summary'];
        $issSumCols = range('A', 'E');
        $iRow = 3;

        foreach ($issSumHeaders as $k => $h) {
            $sheetIss->setCellValue("{$issSumCols[$k]}{$iRow}", $h);
        }
        $sheetIss->getStyle("A{$iRow}:E{$iRow}")->applyFromArray($tableHeaderStyle);
        $iRow++;

        foreach ($issuesCategorySummary as $iCat) {
            $sheetIss->setCellValue("A{$iRow}", $iCat['issue_type']);
            $sheetIss->setCellValue("B{$iRow}", $iCat['incident_count']);
            $sheetIss->setCellValue("C{$iRow}", $iCat['resolved_count']);
            $sheetIss->setCellValue("D{$iRow}", $iCat['pending_count']);
            $sheetIss->setCellValue("E{$iRow}", $iCat['delay_impact_summary']);
            $sheetIss->getStyle("A{$iRow}:E{$iRow}")->applyFromArray($thinBorder);
            $iRow++;
        }
        $iRow += 2;

        // Itemized Daily Issues Log
        $sheetIss->mergeCells("A{$iRow}:F{$iRow}");
        $sheetIss->setCellValue("A{$iRow}", 'ITEMIZED DAILY ISSUES & CONCERNS LOG');
        $sheetIss->getStyle("A{$iRow}:F{$iRow}")->applyFromArray($headerStyle);
        $iRow++;

        $issDetailHeaders = ['Date', 'Report #', 'Issue Type', 'Description', 'Delay Impact', 'Status'];
        $issDetailCols = range('A', 'F');
        foreach ($issDetailHeaders as $k => $h) {
            $sheetIss->setCellValue("{$issDetailCols[$k]}{$iRow}", $h);
        }
        $sheetIss->getStyle("A{$iRow}:F{$iRow}")->applyFromArray($tableHeaderStyle);
        $iRow++;

        foreach ($reports as $r) {
            foreach ($r->issues as $iss) {
                $status = $iss->resolved_at ? 'Resolved' : ($iss->status ?: 'Pending');
                $sheetIss->setCellValue("A{$iRow}", $r->report_date ? $r->report_date->format('Y-m-d') : '');
                $sheetIss->setCellValue("B{$iRow}", $r->report_number ?: '#' . $r->id);
                $sheetIss->setCellValue("C{$iRow}", $iss->issue_type ?: 'General');
                $sheetIss->setCellValue("D{$iRow}", $iss->description ?: '—');
                $sheetIss->setCellValue("E{$iRow}", $iss->delay_impact ?: '—');
                $sheetIss->setCellValue("F{$iRow}", $status);
                $sheetIss->getStyle("A{$iRow}:F{$iRow}")->applyFromArray($thinBorder);
                $iRow++;
            }
        }
        foreach ($issDetailCols as $col) {
            $sheetIss->getColumnDimension($col)->setAutoSize(true);
        }

        // Set active sheet back to 0
        $spreadsheet->setActiveSheetIndex(0);

        $projectSlug = $project ? $project->code : 'All';
        $filename = 'DailyReports_' . $projectSlug . '_' . $startDate->format('Ymd') . '_' . $endDate->format('Ymd') . '.xlsx';

        header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
        header('Content-Disposition: attachment;filename="' . $filename . '"');
        header('Cache-Control: max-age=0');

        $writer = new Xlsx($spreadsheet);
        $writer->save('php://output');
        exit;
    }

    public function pdfRange(Request $request)
    {
        $request->validate([
            'start_date' => 'required|date',
            'end_date' => 'required|date|after_or_equal:start_date',
            'project' => 'nullable|string',
        ]);

        $startDate = Carbon::parse($request->input('start_date'))->startOfDay();
        $endDate = Carbon::parse($request->input('end_date'))->endOfDay();
        $projectUlid = $request->input('project');

        $project = $projectUlid ? Project::where('ulid', $projectUlid)->first() : null;

        $query = DailyReport::with(['project', 'user', 'labors', 'equipment', 'activities', 'materials', 'issues'])
            ->whereBetween('report_date', [$startDate->format('Y-m-d'), $endDate->format('Y-m-d')])
            ->orderBy('report_date', 'asc');

        if ($project) {
            $query->where('project_id', $project->id);
        }

        $reports = $query->get();

        $allLabors = $reports->flatMap->labors;
        $totalPeriodManHours = $allLabors->sum(fn ($l) => $l->workers_count * ($l->hours ?: 0));
        $allEquipment = $reports->flatMap->equipment;
        $totalPeriodEquipHours = $allEquipment->sum('hours_used');
        $allMaterials = $reports->flatMap->materials;
        $allActivities = $reports->flatMap->activities;
        $allIssues = $reports->flatMap->issues;

        // 1. Manpower Category Summary
        $laborCategorySummary = $allLabors->groupBy(fn ($l) => $l->trade ?: 'Unspecified Trade')
            ->map(function ($group, $trade) use ($totalPeriodManHours) {
                $workerDays = $group->sum('workers_count');
                $manHours = $group->sum(fn ($l) => $l->workers_count * ($l->hours ?: 0));
                $activeCount = $group->count();
                $percent = $totalPeriodManHours > 0 ? ($manHours / $totalPeriodManHours) * 100 : 0;

                return [
                    'trade' => $trade,
                    'worker_days' => $workerDays,
                    'total_man_hours' => $manHours,
                    'days_active' => $activeCount,
                    'percent_share' => round($percent, 1),
                ];
            })->values()->sortByDesc('total_man_hours')->values();

        // 2. Equipment Category Summary
        $equipmentCategorySummary = $allEquipment->groupBy(fn ($eq) => $eq->equipment_name ?: 'Unspecified Equipment')
            ->map(function ($group, $name) use ($totalPeriodEquipHours) {
                $hours = $group->sum('hours_used');
                $activeCount = $group->count();
                $percent = $totalPeriodEquipHours > 0 ? ($hours / $totalPeriodEquipHours) * 100 : 0;
                $latestStatus = $group->last()->status ?? 'Active';

                return [
                    'equipment_name' => $name,
                    'total_hours' => $hours,
                    'days_active' => $activeCount,
                    'percent_share' => round($percent, 1),
                    'latest_status' => $latestStatus,
                ];
            })->values()->sortByDesc('total_hours')->values();

        // 3. Materials Category Summary
        $materialsCategorySummary = $allMaterials->groupBy(fn ($m) => $m->material_name ?: 'General Material')
            ->map(function ($group, $name) {
                $deliveriesCount = $group->count();
                $quantities = $group->pluck('quantity_received')->filter()->all();
                $numericSum = 0;
                $unit = '';
                foreach ($quantities as $q) {
                    if (preg_match('/^([0-9.]+)\s*(.*)$/', trim($q), $matches)) {
                        $numericSum += (float) $matches[1];
                        if (empty($unit) && !empty($matches[2])) {
                            $unit = $matches[2];
                        }
                    }
                }
                $qtyDisplay = $numericSum > 0 ? (string)$numericSum : (implode(', ', array_slice($quantities, 0, 3)) ?: '—');
                $conditions = $group->pluck('condition')->filter()->unique()->implode(', ') ?: 'Good';

                return [
                    'material_name' => $name,
                    'total_quantity' => $qtyDisplay,
                    'unit' => $unit ?: 'units',
                    'deliveries_count' => $deliveriesCount,
                    'condition_summary' => $conditions,
                ];
            })->values()->sortByDesc('deliveries_count')->values();

        // 4. Activities Category Summary
        $activitiesCategorySummary = $allActivities->groupBy(fn ($a) => $a->task_name ?: 'General Works')
            ->map(function ($group, $name) {
                $zones = $group->pluck('zone_area')->filter()->unique()->implode(', ') ?: 'Site Wide';
                $highestProgress = $group->max('percentage_completed') ?: 0;
                $daysWorked = $group->count();

                return [
                    'task_name' => $name,
                    'zones' => $zones,
                    'highest_progress' => $highestProgress,
                    'days_worked' => $daysWorked,
                ];
            })->values()->sortByDesc('days_worked')->values();

        // 5. Issues Category Summary
        $issuesCategorySummary = $allIssues->groupBy(fn ($i) => $i->issue_type ?: 'General')
            ->map(function ($group, $type) {
                $count = $group->count();
                $resolved = $group->whereNotNull('resolved_at')->count();
                $delays = $group->pluck('delay_impact')->filter()->all();

                return [
                    'issue_type' => $type,
                    'incident_count' => $count,
                    'resolved_count' => $resolved,
                    'pending_count' => $count - $resolved,
                    'delay_impact_summary' => !empty($delays) ? implode('; ', array_slice($delays, 0, 3)) : 'None reported',
                ];
            })->values()->sortByDesc('incident_count')->values();

        $summary = [
            'total_workers' => $allLabors->sum('workers_count'),
            'total_man_hours' => $totalPeriodManHours,
            'total_equipment_hours' => $totalPeriodEquipHours,
            'total_activities' => $allActivities->count(),
            'total_materials' => $allMaterials->count(),
            'total_issues' => $allIssues->count(),
        ];

        $pdf = \Barryvdh\DomPDF\Facade\Pdf::loadView('dailyreports::pdf.daily-reports-range', [
            'project' => $project,
            'reports' => $reports,
            'startDate' => $startDate,
            'endDate' => $endDate,
            'summary' => $summary,
            'laborCategorySummary' => $laborCategorySummary,
            'equipmentCategorySummary' => $equipmentCategorySummary,
            'materialsCategorySummary' => $materialsCategorySummary,
            'activitiesCategorySummary' => $activitiesCategorySummary,
            'issuesCategorySummary' => $issuesCategorySummary,
        ]);

        $projectSlug = $project ? $project->code : 'All';
        $filename = 'DailyReports_' . $projectSlug . '_' . $startDate->format('Ymd') . '_' . $endDate->format('Ymd') . '.pdf';

        return $pdf->download($filename);
    }
}