<?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 [];
    //         }

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

    //         if ($patrols->count() < 2)
    //         {
    //             return [];
    //         }
    //         $checkpointNames = CheckPointName::where('plant_id', $selectedPlant)
    //             ->whereIn('id', $patrols->pluck('check_point_name_id')->unique())
    //             ->orderBy('id') // or another column
    //             ->pluck('name', 'id');

    //         $nameToSequence = [];
    //         $sequence = 1;
    //         foreach ($checkpointNames as $id => $name)
    //         {
    //             $nameToSequence[$name] = $sequence++;
    //         }

    //         $sequenceNumbers = array_values($nameToSequence);

    //         $cushioningData = CheckPointTime::where('plant_id', $selectedPlant)
    //         ->whereIn('sequence_number', $sequenceNumbers)
    //         ->get(['sequence_number', 'min_cushioning', 'max_cushioning'])
    //         ->keyBy('sequence_number');

    //         $numSequences = count($cushioningData);


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

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

    //         $labels[] = "Seq " . ($i + 1);
    //         $sequenceNumber = ($i % $numSequences) + 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');
        $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[] = "X";
            //     $labels[] = "Seq " . ($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 getInvalidSessionChartData(): array
    {
        $labels = [];
        for ($i = 1; $i <= 9; $i++) {
            $labels[] = "Seq " . $i;
        }
        return [
            'labels' => $labels,
            'datasets' => [
                [
                    'label' => 'Interval (X)',
                    'data' => array_fill(0, 9, 0), // <-- Changed to 100
                    'backgroundColor' => array_fill(0, 9, '#ff4c4c'),
                    'borderColor' => '#333',
                    'borderWidth' => 1,
                ],
            ],
        ];
    }


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