<?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;

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,
            ],
        ],
    ];


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

            // 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;
            // }

            // $numSequences = count($sequenceNumbers);

            // for ($i = 0; $i < $patrols->count() - 1; $i++)
            // {
            //     $sequenceNumber = $sequenceNumbers[$i % $numSequences];
            //     $cushioning = $cushioningData[$sequenceNumber] ?? null;

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

            //     $min = $cushioning->min_cushioning;
            //     $max = $cushioning->max_cushioning;
            //     $interval = $intervals[$i];

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

            // $labels = [];
            // for ($i = 0; $i < count($intervals); $i++) {
            //     $labels[] = "Seq " . ($i + 1);
            // }

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


            // $colors = [];

            // $intervals = [];
            // for ($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;
            // }

            // for ($i = 0; $i < $patrols->count() - 1; $i++)
            // {
            //     $checkpointId = $patrols[$i+1]->check_point_name_id;
            //     $name = $checkpointNames[$checkpointId] ?? null;
            //     $sequenceNumber = $nameToSequence[$name] ?? null;

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

            //     $cushioning = $cushioningData[$sequenceNumber] ?? null;

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

            //     $min = $cushioning->min_cushioning;
            //     $max = $cushioning->max_cushioning;
            //     $interval = $intervals[$i];

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

            // $labels = [];
            // for ($i = 0; $i < count($intervals); $i++)
            // {
            //     $labels[] = "Seq " . ($i + 1);
            // }

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

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