analytics/app/Http/Controllers/Concerns/ParsesDateRange.php

<?php

namespace App\Http\Controllers\Concerns;

use Illuminate\Http\Request;
use Illuminate\Support\Carbon;

trait ParsesDateRange
{
    private function parseDateRange(Request $request): array
    {
        $range = $request->get('range', '7d');
        $to = Carbon::today();

        $from = match ($range) {
            'today' => Carbon::today(),
            '7d' => Carbon::today()->subDays(6),
            '30d' => Carbon::today()->subDays(29),
            '90d' => Carbon::today()->subDays(89),
            'custom' => Carbon::parse($request->get('from', Carbon::today()->subDays(6)->toDateString())),
            default => Carbon::today()->subDays(6),
        };

        if ($range === 'custom' && $request->has('to')) {
            $to = Carbon::parse($request->get('to'));
        }

        if ($from->gt($to)) {
            [$from, $to] = [$to, $from];
        }

        return [$from, $to];
    }

    private function previousPeriod(Carbon $from, Carbon $to): array
    {
        $days = $from->diffInDays($to) + 1;

        $prevTo = $from->copy()->subDay();
        $prevFrom = $prevTo->copy()->subDays($days - 1);

        return [$prevFrom, $prevTo];
    }
}