<?php

namespace App\Services;

use App\Models\Device;
use App\Models\TimeseriesKeyMaster;
use App\Models\TimeseriesAlertMessage;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Log;
use Carbon\Carbon;

class TelemetryService
{
    protected $customerInfoService;
    protected $adminService;

    public function __construct(CustomerInfoService $customerInfoService, AdminService $adminService)
    {
        $this->customerInfoService = $customerInfoService;
        $this->adminService = $adminService;
    }

    public function getDeviceHealth(array $values): string
    {
        $hasRed = false;
        $hasOrange = false;

        foreach ($values as $value) {
            if ($value['key_name'] == 'PowerLoss_value') {
                if ($value['value'] > 5 && $value['value'] < 10) {
                    $hasRed = true;
                    break;
                } elseif ($value['value'] > 2.5 && $value['value'] < 5) {
                    $hasOrange = true;
                }
            } else {
                if ($value['value'] > 0 && $value['value'] < 31) {
                    $hasRed = true;
                    break;
                } elseif ($value['value'] < 71) {
                    $hasOrange = true;
                }
            }
        }

        return $hasRed ? 'red' : ($hasOrange ? 'orange' : 'green');
    }

    public function getAssetHealth(array $deviceHealthStatuses): string
    {
        if (in_array('red', $deviceHealthStatuses)) {
            return 'red';
        }
        return in_array('orange', $deviceHealthStatuses) ? 'orange' : 'green';
    }

    public function convertToUserTimezone($utcDatetime, $userTimezone = 'Asia/Kolkata', $format = 'd-M-Y H:i:s')
    {
        return Carbon::parse($utcDatetime, 'UTC')
            ->setTimezone($userTimezone)
            ->format($format);
    }

    public function getThresholdMap(): array
    {
        return [
            'ChannelSpeed' => [
                ['threshold' => 5000, 'color' => 'green']
            ],
            'PowerLoss_value' => [
                ['threshold' => 2.5, 'color' => 'green'],
                ['threshold' => 5, 'color' => 'orange'],
                ['threshold' => 7.5, 'color' => 'red']
            ],
            'GlobalLevel_value' => [
                ['threshold' => 2, 'color' => 'green'],
                ['threshold' => 6, 'color' => 'orange'],
                ['threshold' => 8, 'color' => 'red']
            ],
            'default' => [
                ['threshold' => 25, 'color' => 'red'],
                ['threshold' => 50, 'color' => 'orange'],
                ['threshold' => 70, 'color' => 'green']
            ]
        ];
    }

    public function getThresholdLimit(): array
    {
        return [
            'ChannelSpeed' => [
                ['min' => 0, 'color' => 50000]
            ],
            'PowerLoss_value' => [
                ['min' => 0, 'color' => 10]
            ],
            'GlobalLevel_value' => [
                ['min' => 0, 'color' => 10]
            ],
            'StaticTorque_value' => [
                ['min' => 0, 'color' => 50000]
            ],
            'StaticPower_value' => [
                ['min' => 0, 'color' => 500000]
            ],
            'default' => [
                ['min' => 0, 'color' => 100]
            ]
        ];
    }

    public function getHealthStatus(float $value, array $thresholds): string
    {
        foreach (array_reverse($thresholds) as $t) {
            if ($value > $t['threshold']) {
                return match ($t['color']) {
                    'red' => 'Alert',
                    'orange' => 'Attention',
                    'green' => 'Stable',
                    default => 'Stable'
                };
            }
        }
        return 'Stable';
    }

    public function transformTelemetryData(array $data, array $displayNameMap): array
    {
        $transformedTelemetry = [];
        $dateTime = null;

        if (!empty($data) && is_array($data)) {
            foreach ($data as $key => $items) {
                foreach ($items as $item) {
                    $dateTime = Carbon::createFromTimestamp($item['ts'] / 1000)->format('d-M-Y H:i:s');
                    $value = $item['value'];

                    $thresholds = $this->getThresholdMap()[$key] ?? $this->getThresholdMap()['default'];
                    $thresholdLimits = $this->getThresholdLimit()[$key] ?? $this->getThresholdLimit()['default'];

                    $status = $this->getHealthStatus($value, $thresholds);

                    $transformedTelemetry[] = [
                        'display_name'  => $displayNameMap[$key] ?? $key,
                        'value'         => number_format((float)$value, 2),
                        'health_status' => $status,
                        'thresholds'    => $thresholds,
                        'limit'         => $thresholdLimits
                    ];
                }
            }
        }

        return [
            'telemetry' => $transformedTelemetry,
            'dateTime' => $dateTime
        ];
    }
}