<?php

namespace App\Filament\Widgets;

use App\Models\CheckPointName;
use App\Models\CheckPointTime;
use App\Models\GuardPatrolEntry;
use Carbon\Carbon;
use DB;
use Filament\Widgets\ChartWidget;
use Illuminate\Support\Facades\Cache;

class GuardPatrolHourlyChart extends ChartWidget
{
    protected static ?string $heading = 'Chart';

      protected static ?string $maxHeight = '330px';

    protected int|string|array $columnSpan = 12;


    // protected function getData(): array
    // {
    //     $selectedPlant = session('selected_plant');
    //     $selectedDate = session('selected_date');
    //     $selectedGuardName = session('selected_name');
    //     $selectedTime = session('selected_time');
    //     $validSessions = session('valid_sessions', []);

    //     // if (empty($selectedTime) || !isset($validSessions[$selectedTime]) || !$validSessions[$selectedTime]) {
    //     //     return [];
    //     // }

    //     if (!$selectedPlant || !$selectedDate || !$selectedGuardName || empty($selectedTime)) {
    //         return [];
    //     }

    //     if (empty($selectedTime) || !isset($validSessions[$selectedTime]) || !$validSessions[$selectedTime])
    //     {
    //         return $this->getInvalidSessionChartData();
    //     }


    //     $query = GuardPatrolEntry::where('plant_id', $selectedPlant)
    //             ->where('guard_name_id', $selectedGuardName)
    //             ->whereDate('patrol_time', $selectedDate);


    //     if (!empty($selectedTime)) {
    //         [$startTime, $endTime] = explode(' - ', $selectedTime);
    //         $startDateTime = Carbon::parse($selectedDate . ' ' . $startTime);
    //         $endDateTime = Carbon::parse($selectedDate . ' ' . $endTime);
    //         $query->whereBetween('guard_patrol_entries.patrol_time', [$startDateTime, $endDateTime]);
    //     }

    //     // $patrols = $query->orderBy('guard_patrol_entries.patrol_time')->get();
    //     $patrols = $query->orderBy('patrol_time')->get();

    //     if ($patrols->count() < 2) {
    //         return [];
    //     }

    //     // Get all CheckPointTime records for the plant
    //     $cushioningData = CheckPointTime::where('plant_id', $selectedPlant)
    //         ->orderBy('sequence_number')
    //         ->get(['sequence_number', 'min_cushioning', 'max_cushioning', 'check_point1_id', 'check_point2_id'])
    //         ->keyBy('sequence_number');

    //     // Get all unique checkpoint IDs from CheckPointTime
    //     $checkPointIds = collect($cushioningData)
    //         ->flatMap(function ($item) {
    //             return [$item->check_point1_id, $item->check_point2_id];
    //         })
    //         ->unique();


    //     $checkPointNames = CheckPointName::whereIn('id', $checkPointIds)
    //         ->pluck('name', 'id');

    //     $sequenceToName = [];
    //     //$sequenceNumbers = [];
    //     foreach ($cushioningData as $sequenceNumber => $data)
    //     {
    //         $lastNameId = $data->check_point2_id;
    //         $name = $checkPointNames[$lastNameId] ?? null;
    //         if ($name)
    //         {
    //             $sequenceToName[$sequenceNumber] = $name;
    //             //$sequenceNumbers[] = $sequenceNumber;
    //         }
    //     }

    //     $numSequences = count($sequenceToName);

    //     // Prepare chart data
    //     $intervals = [];
    //     $labels = [];
    //     $colors = [];

    //     for ($i = 0; $i < $patrols->count() - 1; $i++)
    //     {
    //         $current = Carbon::parse($patrols[$i]->patrol_time);
    //         $next = Carbon::parse($patrols[$i+1]->patrol_time);
    //         $interval = $next->diffInMinutes($current, true);
    //         $intervals[] = $interval;

    //         // if ($next < $current)
    //         // {
    //         //     $colors[] = '#ff4c4c'; // Red for out-of-order
    //         //     // $intervals[] = $interval;
    //         //     $intervals[] = 0;
    //         //     $labels[] = "Seq " . ($i + 1);
    //         //     continue;
    //         // }

    //         $sequenceNumber = ($i % $numSequences) + 1;
    //         $labels[] = "Seq " . ($i + 1);

    //         $cushioning = $cushioningData[$sequenceNumber] ?? null;
    //         if (!$cushioning) {
    //             $colors[] = '#cccccc';
    //             continue;
    //         }

    //         $min = $cushioning->min_cushioning;
    //         $max = $cushioning->max_cushioning;

    //         if ($interval < $min) {
    //             $colors[] = '#ffd700';
    //         } elseif ($interval <= $max) {
    //             $colors[] = '#4caf50';
    //         } else {
    //             $colors[] = '#ff4c4c';
    //         }
    //     }

    //     return [
    //         'labels' => $labels,
    //         'datasets' => [
    //             [
    //                 'label' => 'Interval (minutes)',
    //                 'data' => $intervals,
    //                 'backgroundColor' => $colors,
    //                 'borderColor' => '#333',
    //                 'borderWidth' => 1,
    //             ],
    //         ],
    //     ];
    // }

    // protected function getData(): array
    // {
    //     $selectedPlant = session('selected_plant');
    //     $selectedDate = session('selected_date');
    //     $selectedGuardName = session('selected_name');
    //     $selectedTime = session('selected_time');


    //     if (!$selectedPlant || !$selectedDate || !$selectedGuardName || empty($selectedTime)) {
    //         return [];
    //     }

    //     $query = GuardPatrolEntry::where('plant_id', $selectedPlant)
    //         ->where('guard_name_id', $selectedGuardName)
    //         ->whereDate('patrol_time', $selectedDate);

    //     if (!empty($selectedTime)) {
    //         [$startTime, $endTime] = explode(' - ', $selectedTime);
    //         $startDateTime = Carbon::parse($selectedDate . ' ' . $startTime);
    //         $endDateTime = Carbon::parse($selectedDate . ' ' . $endTime);
    //         $query->whereBetween('guard_patrol_entries.patrol_time', [$startDateTime, $endDateTime]);
    //     }

    //     $patrols = $query->orderBy('patrol_time')->get();

    //     if ($patrols->count() < 2) {
    //         return [];
    //     }

    //     // Get all CheckPointTime records for the plant
    //     $checkPointTimes = CheckPointTime::where('plant_id', $selectedPlant)
    //         ->orderBy('sequence_number')
    //         ->get(['sequence_number', 'min_cushioning', 'max_cushioning', 'check_point1_id', 'check_point2_id']);

    //     // Build the expected sequence
    //     $expectedSequence = [];
    //     foreach ($checkPointTimes as $row) {
    //         $expectedSequence[] = $row->check_point1_id;
    //     }
    //     if ($checkPointTimes->isNotEmpty()) {
    //         $expectedSequence[] = $checkPointTimes->last()->check_point2_id;
    //     }

    //     $intervals = [];
    //     $labels = [];
    //     $colors = [];

    //     $cushioningData = $checkPointTimes->keyBy('sequence_number');

    //     for ($i = 0; $i < $patrols->count() - 1; $i++) {
    //         $current = Carbon::parse($patrols[$i]->patrol_time);
    //         $next = Carbon::parse($patrols[$i+1]->patrol_time);
    //         $interval = $next->diffInMinutes($current, true);
    //         $intervals[] = $interval;

    //         $labels[] = "Seq " . ($i + 1);

    //         if ($i < count($expectedSequence)) {
    //             $expectedCheckpoint = $expectedSequence[$i];
    //             $actualCheckpoint = $patrols[$i]->check_point_name_id;
    //             if ($expectedCheckpoint != $actualCheckpoint) {
    //                 $colors[] = '#ff4c4c';
    //                 continue;
    //             }
    //         } else {
    //             $colors[] = '#ff4c4c';
    //             continue;
    //         }

    //         $sequenceNumber = ($i % $checkPointTimes->count()) + 1;
    //         $cushioning = $cushioningData[$sequenceNumber] ?? null;
    //         if (!$cushioning) {
    //             $colors[] = '#cccccc';
    //             continue;
    //         }

    //         $min = $cushioning->min_cushioning;
    //         $max = $cushioning->max_cushioning;

    //         if ($interval < $min) {
    //             $colors[] = '#ffd700'; // Yellow for too fast
    //         } elseif ($interval <= $max) {
    //             $colors[] = '#4caf50'; // Green for good
    //         } else {
    //             $colors[] = '#ff4c4c'; // Red for too slow
    //         }
    //     }

    //     return [
    //         'labels' => $labels,
    //         'datasets' => [
    //             [
    //                 'label' => 'Interval (minutes)',
    //                 'data' => $intervals,
    //                 'backgroundColor' => $colors,
    //                 'borderColor' => '#333',
    //                 'borderWidth' => 1,
    //             ],
    //         ],
    //     ];
    // }

   // protected function getData(): array
    // {
    //     $selectedPlant = session('selected_plant'); // Or get from request/argument
    //     $selectedDate = session('selected_date');   // Or get from request/argument
    //     $selectedGuardName = session('selected_name'); // Or get from request/argument
    //     $selectedTime = session('selected_time');   // Or get from request/argument

    //     // Optional: If you want to avoid sessions entirely, pass these as arguments to the function.
    //     // For now, we'll keep them as session for minimal change.

    //     if (!$selectedPlant || !$selectedDate || !$selectedGuardName || empty($selectedTime)) {
    //         return [];
    //     }

    //     $query = GuardPatrolEntry::where('plant_id', $selectedPlant)
    //         ->where('guard_name_id', $selectedGuardName)
    //         ->whereDate('patrol_time', $selectedDate);

    //     if (!empty($selectedTime)) {
    //         [$startTime, $endTime] = explode(' - ', $selectedTime);
    //         $startDateTime = Carbon::parse($selectedDate . ' ' . $startTime);
    //         $endDateTime = Carbon::parse($selectedDate . ' ' . $endTime);
    //         $query->whereBetween('guard_patrol_entries.patrol_time', [$startDateTime, $endDateTime]);
    //     }

    //     $patrols = $query->orderBy('patrol_time')->get();

    //     if ($patrols->count() < 2) {
    //         return [];
    //     }

    //     // Get all CheckPointTime records for the plant
    //     $checkPointTimes = CheckPointTime::where('plant_id', $selectedPlant)
    //         ->orderBy('sequence_number')
    //         ->get(['sequence_number', 'min_cushioning', 'max_cushioning', 'check_point1_id', 'check_point2_id']);

    //     // Build the expected sequence
    //     $expectedSequence = [];
    //     foreach ($checkPointTimes as $row) {
    //         $expectedSequence[] = $row->check_point1_id;
    //     }
    //     if ($checkPointTimes->isNotEmpty()) {
    //         $expectedSequence[] = $checkPointTimes->last()->check_point2_id;
    //     }

    //     // Prepare chart data
    //     $intervals = [];
    //     $labels = [];
    //     $colors = [];

    //     // Key cushioning data by sequence_number
    //     $cushioningData = $checkPointTimes->keyBy('sequence_number');

    //     // Track if any sequence matches
    //     $anySequenceMatches = false;

    //     // For each interval (between patrols)
    //     for ($i = 0; $i < $patrols->count() - 1; $i++) {
    //         // Check if the current checkpoint matches the expected sequence
    //         if ($i < count($expectedSequence)) {
    //             $expectedCheckpoint = $expectedSequence[$i];
    //             $actualCheckpoint = $patrols[$i]->check_point_name_id;
    //             if ($expectedCheckpoint == $actualCheckpoint) {
    //                 $anySequenceMatches = true;
    //             }
    //         }
    //     }

    //     // If no sequence matches at all, show only "X"
    //     if (!$anySequenceMatches) {
    //         return [
    //             'labels' => ['X'],
    //             'datasets' => [
    //                 [
    //                     'label' => 'Interval (minutes)',
    //                     'data' => [0],
    //                     'backgroundColor' => ['#ff4c4c'],
    //                     'borderColor' => '#333',
    //                     'borderWidth' => 1,
    //                 ],
    //             ],
    //         ];
    //     }

    //     // Otherwise, show the intervals as before
    //     for ($i = 0; $i < $patrols->count() - 1; $i++) {
    //         $current = Carbon::parse($patrols[$i]->patrol_time);
    //         $next = Carbon::parse($patrols[$i+1]->patrol_time);
    //         $interval = $next->diffInMinutes($current, true);
    //         $intervals[] = $interval;

    //         $labels[] = "Seq " . ($i + 1);

    //         // Check if the current checkpoint matches the expected sequence
    //         if ($i < count($expectedSequence)) {
    //             $expectedCheckpoint = $expectedSequence[$i];
    //             $actualCheckpoint = $patrols[$i]->check_point_name_id;
    //             if ($expectedCheckpoint != $actualCheckpoint) {
    //                 $colors[] = '#ff4c4c';
    //                 continue;
    //             }
    //         } else {
    //             $colors[] = '#ff4c4c';
    //             continue;
    //         }

    //         // If sequence is correct, apply cushioning logic
    //         $sequenceNumber = ($i % $checkPointTimes->count()) + 1;
    //         $cushioning = $cushioningData[$sequenceNumber] ?? null;
    //         if (!$cushioning) {
    //             $colors[] = '#cccccc';
    //             continue;
    //         }

    //         $min = $cushioning->min_cushioning;
    //         $max = $cushioning->max_cushioning;

    //         if ($interval < $min) {
    //             $colors[] = '#ffd700';
    //         } elseif ($interval <= $max) {
    //             $colors[] = '#4caf50';
    //         } else {
    //             $colors[] = '#ff4c4c';
    //         }
    //     }

    //     return [
    //         'labels' => $labels,
    //         'datasets' => [
    //             [
    //                 'label' => 'Interval (minutes)',
    //                 'data' => $intervals,
    //                 'backgroundColor' => $colors,
    //                 'borderColor' => '#333',
    //                 'borderWidth' => 1,
    //             ],
    //         ],
    //     ];
    // }

//     protected function getData(): array
// {
//     $selectedPlant = session('selected_plant');
//     $selectedDate = session('selected_date');
//     $selectedGuardName = session('selected_name');
//     $selectedTime = session('selected_time');

//     if (!$selectedPlant || !$selectedDate || !$selectedGuardName || empty($selectedTime)) {
//         return [];
//     }

//     $query = GuardPatrolEntry::where('plant_id', $selectedPlant)
//         ->where('guard_name_id', $selectedGuardName)
//         ->whereDate('patrol_time', $selectedDate);

//     if (!empty($selectedTime)) {
//         [$startTime, $endTime] = explode(' - ', $selectedTime);
//         $startDateTime = Carbon::parse($selectedDate . ' ' . $startTime);
//         $endDateTime = Carbon::parse($selectedDate . ' ' . $endTime);
//         $query->whereBetween('guard_patrol_entries.patrol_time', [$startDateTime, $endDateTime]);
//     }

//     $patrols = $query->orderBy('patrol_time')->get();

//     if ($patrols->count() < 2) {
//         return [];
//     }

//     // Get all CheckPointTime records for the plant
//     $checkPointTimes = CheckPointTime::where('plant_id', $selectedPlant)
//         ->orderBy('sequence_number')
//         ->get(['sequence_number', 'min_cushioning', 'max_cushioning', 'check_point1_id', 'check_point2_id']);

//     // Build the expected sequence
//     $expectedSequence = [];
//     foreach ($checkPointTimes as $row) {
//         $expectedSequence[] = $row->check_point1_id;
//     }
//     if ($checkPointTimes->isNotEmpty()) {
//         $expectedSequence[] = $checkPointTimes->last()->check_point2_id;
//     }

//     // Prepare chart data
//     $intervals = [];
//     $labels = [];
//     $colors = [];
//     $cushioningData = $checkPointTimes->keyBy('sequence_number');

//     // Track the current position in the expected sequence
//     $currentSeqIndex = 0;
//     $anySequenceMatches = false;

//     for ($i = 0; $i < $patrols->count() - 1; $i++) {
//         $current = Carbon::parse($patrols[$i]->patrol_time);
//         $next = Carbon::parse($patrols[$i+1]->patrol_time);
//         $interval = $next->diffInMinutes($current, true);
//         $intervals[] = $interval;

//         $labels[] = "Seq " . ($i + 1);

//         // Check if current patrol's checkpoint matches the next expected
//         if ($currentSeqIndex < count($expectedSequence) && $patrols[$i]->check_point_name_id == $expectedSequence[$currentSeqIndex]) {
//             $currentSeqIndex++;
//             $anySequenceMatches = true;
//             // Apply cushioning logic for valid sequence
//             $sequenceNumber = ($currentSeqIndex - 1) % $checkPointTimes->count() + 1;
//             $cushioning = $cushioningData[$sequenceNumber] ?? null;
//             if (!$cushioning) {
//                 $colors[] = '#cccccc';
//                 continue;
//             }
//             $min = $cushioning->min_cushioning;
//             $max = $cushioning->max_cushioning;
//             if ($interval < $min) {
//                 $colors[] = '#ffd700';
//             } elseif ($interval <= $max) {
//                 $colors[] = '#4caf50';
//             } else {
//                 $colors[] = '#ff4c4c';
//             }
//         } else {
//             // Out of order: mark as red
//             $colors[] = '#ff4c4c';
//         }
//     }

//     // If no sequence matches at all, show only "X"
//     if (!$anySequenceMatches) {
//         return [
//             'labels' => ['X'],
//             'datasets' => [
//                 [
//                     'label' => 'Interval (minutes)',
//                     'data' => [0],
//                     'backgroundColor' => ['#ff4c4c'],
//                     'borderColor' => '#333',
//                     'borderWidth' => 1,
//                 ],
//             ],
//         ];
//     }

//     return [
//         'labels' => $labels,
//         'datasets' => [
//             [
//                 'label' => 'Interval (minutes)',
//                 'data' => $intervals,
//                 'backgroundColor' => $colors,
//                 'borderColor' => '#333',
//                 'borderWidth' => 1,
//             ],
//         ],
//     ];
// }

        protected function getData(): array
        {
            $selectedPlant = session('selected_plant');
            $selectedDate = session('selected_date');
            $selectedGuardName = session('selected_name');
            $selectedTime = session('selected_time');

            if (!$selectedPlant || !$selectedDate || !$selectedGuardName || empty($selectedTime)) {
                return [];
            }

            $validSessions = session('valid_sessions', []);
            $isValid = $validSessions[$selectedTime] ?? false;

            if (!$isValid) {
                return $this->getInvalidSessionChartData();
            }

            $query = GuardPatrolEntry::where('plant_id', $selectedPlant)
                ->where('guard_name_id', $selectedGuardName)
                ->whereDate('patrol_time', $selectedDate);

            if (!empty($selectedTime)) {
                [$startTime, $endTime] = explode(' - ', $selectedTime);
                $startDateTime = Carbon::parse($selectedDate . ' ' . $startTime);
                $endDateTime = Carbon::parse($selectedDate . ' ' . $endTime);
                $query->whereBetween('guard_patrol_entries.patrol_time', [$startDateTime, $endDateTime]);
            }

            $patrols = $query->orderBy('patrol_time')->get();

            if ($patrols->count() < 2) {
                return [];
            }

            // Get all CheckPointTime records for the plant
            $checkPointTimes = CheckPointTime::where('plant_id', $selectedPlant)
                ->orderBy('sequence_number')
                ->get(['sequence_number', 'min_cushioning', 'max_cushioning', 'check_point1_id', 'check_point2_id']);

            // Build the expected sequence
            $expectedSequence = [];
            foreach ($checkPointTimes as $row) {
                $expectedSequence[] = $row->check_point1_id;
            }
            if ($checkPointTimes->isNotEmpty()) {
                $expectedSequence[] = $checkPointTimes->last()->check_point2_id;
            }

            // Prepare chart data
            $intervals = [];
            $labels = [];
            $colors = [];
            $cushioningData = $checkPointTimes->keyBy('sequence_number');

            // Track the current position in the expected sequence
            $currentSeqIndex = 0;

            for ($i = 0; $i < $patrols->count() - 1; $i++) {
                $current = Carbon::parse($patrols[$i]->patrol_time);
                $next = Carbon::parse($patrols[$i+1]->patrol_time);
                $interval = $next->diffInMinutes($current, true);
                $intervals[] = $interval;

                $labels[] = "Seq " . ($i + 1);

                // Check if current patrol's checkpoint matches the next expected
                if ($currentSeqIndex < count($expectedSequence) && $patrols[$i]->check_point_name_id == $expectedSequence[$currentSeqIndex]) {
                    $currentSeqIndex++;
                    // Apply cushioning logic for valid sequence
                    $sequenceNumber = ($currentSeqIndex - 1) % $checkPointTimes->count() + 1;
                    $cushioning = $cushioningData[$sequenceNumber] ?? null;
                    if (!$cushioning) {
                        $colors[] = '#cccccc';
                        continue;
                    }
                    $min = $cushioning->min_cushioning;
                    $max = $cushioning->max_cushioning;
                    if ($interval < $min) {
                        $colors[] = '#ffd700';
                    } elseif ($interval <= $max) {
                        $colors[] = '#4caf50';
                    } else {
                        $colors[] = '#ff4c4c';
                    }
                } else {
                    // Out of order: mark as red
                    $colors[] = '#ff4c4c';
                }
            }

            return [
                'labels' => $labels,
                'datasets' => [
                    [
                        'label' => 'Interval (minutes)',
                        'data' => $intervals,
                        'backgroundColor' => $colors,
                        'borderColor' => '#333',
                        'borderWidth' => 1,
                    ],
                ],
            ];
        }

        protected function getInvalidSessionChartData(): array
        {
            return [
                'labels' => ['X'],
                'datasets' => [
                    [
                        'label' => 'Interval (minutes)',
                        'data' => [0],
                        'backgroundColor' => ['#ff4c4c'],
                        'borderColor' => '#333',
                        'borderWidth' => 1,
                    ],
                ],
            ];
        }

        protected function getOptions(): array
        {
            return [
                'scales' => [
                    'y' => [
                        'beginAtZero' => true, //Start Y-axis from 0
                        'ticks' => [
                            'stepSize' => 5,
                        ],
                    ],
                ],
            ];
        }

    // protected function getOptions(): array
    // {
    //     return [
    //         'plugins' => [
    //             'datalabels' => [
    //                 'anchor' => 'end',
    //                 'align' => 'top',
    //                 'color' => '#000',
    //                 'font' => [
    //                     'weight' => 'bold',
    //                 ],
    //                 'formatter' => \Illuminate\Support\Js::from("function(value) { return value + ' min'; }"),
    //             ],
    //         ],
    //     ];
    // }

    protected function getType(): string
    {
        return 'bar';
    }
}