<?php

namespace Modules\Tms\Services;

use Modules\Tms\Models\Driver;
use Modules\Tms\Models\LocationLog;
use Modules\Tms\Models\Shipment;

class TmsTrackingService
{
    public function recordLocation(
        int $business_id,
        float $latitude,
        float $longitude,
        ?int $driver_id = null,
        ?int $shipment_id = null,
        ?int $vehicle_id = null,
        ?float $accuracy = null,
        ?float $speed = null,
        ?float $heading = null
    ): LocationLog {
        $log = LocationLog::create([
            'business_id' => $business_id,
            'driver_id' => $driver_id,
            'shipment_id' => $shipment_id,
            'vehicle_id' => $vehicle_id,
            'latitude' => $latitude,
            'longitude' => $longitude,
            'accuracy' => $accuracy,
            'speed' => $speed,
            'heading' => $heading,
            'logged_at' => now(),
        ]);

        if ($driver_id) {
            Driver::where('business_id', $business_id)
                ->where('id', $driver_id)
                ->update([
                    'last_latitude' => $latitude,
                    'last_longitude' => $longitude,
                    'last_location_at' => now(),
                ]);
        }

        return $log;
    }

    public function getLiveDrivers(int $business_id): array
    {
        return Driver::where('business_id', $business_id)
            ->where('is_active', true)
            ->whereNotNull('last_latitude')
            ->whereNotNull('last_longitude')
            ->where('last_location_at', '>=', now()->subHours(24))
            ->with(['user:id,first_name,last_name'])
            ->get()
            ->map(function ($driver) {
                $activeShipment = Shipment::where('business_id', $driver->business_id)
                    ->where('driver_id', $driver->id)
                    ->whereIn('status', ['scheduled', 'in_transit'])
                    ->latest()
                    ->first();

                return [
                    'id' => $driver->id,
                    'name' => $driver->name,
                    'lat' => (float) $driver->last_latitude,
                    'lng' => (float) $driver->last_longitude,
                    'updated_at' => $driver->last_location_at?->format('Y-m-d H:i:s'),
                    'shipment_ref' => $activeShipment?->ref_no,
                    'shipment_id' => $activeShipment?->id,
                ];
            })
            ->values()
            ->all();
    }

    public function getShipmentTrack(int $business_id, int $shipment_id): array
    {
        $shipment = Shipment::where('business_id', $business_id)->findOrFail($shipment_id);

        $points = LocationLog::where('business_id', $business_id)
            ->where('shipment_id', $shipment_id)
            ->orderBy('logged_at')
            ->get(['latitude', 'longitude', 'logged_at', 'speed'])
            ->map(fn ($p) => [
                'lat' => (float) $p->latitude,
                'lng' => (float) $p->longitude,
                'at' => $p->logged_at?->format('Y-m-d H:i:s'),
                'speed' => $p->speed,
            ])
            ->all();

        $destination = null;
        if ($shipment->destination_latitude && $shipment->destination_longitude) {
            $destination = [
                'lat' => (float) $shipment->destination_latitude,
                'lng' => (float) $shipment->destination_longitude,
                'address' => $shipment->destination_address,
            ];
        }

        return [
            'shipment' => [
                'id' => $shipment->id,
                'ref_no' => $shipment->ref_no,
                'status' => $shipment->status,
            ],
            'points' => $points,
            'destination' => $destination,
        ];
    }

    public function resolveDriverForUser(int $business_id, int $user_id): ?Driver
    {
        return Driver::where('business_id', $business_id)
            ->where('user_id', $user_id)
            ->where('is_active', true)
            ->first();
    }
}