auditionadmin/database/seeders/EntrySeeder.php

<?php

namespace Database\Seeders;

use App\Models\Audition;
use App\Models\Entry;
use App\Models\Student;
use Illuminate\Database\Seeder;

use function mt_rand;

class EntrySeeder extends Seeder
{
    /**
     * Run the database seeds.
     */
    public function run(): void
    {
        $students = Student::all();

        foreach ($students as $student) {
            if ($student->grade > 9) {
                $audition = Audition::where('maximum_grade', '=', '12')
                    ->inRandomOrder()->first();
            }
            if ($student->grade == 9) {
                $audition = Audition::where('maximum_grade', '>', '8')
                    ->inRandomOrder()->first();
            }
            if ($student->grade == 8) {
                $audition = Audition::where('maximum_grade', '=', '9')
                    ->inRandomOrder()->first();
            }
            if ($student->grade == 7) {
                $audition = Audition::where('maximum_grade', '=', '7')
                    ->inRandomOrder()->first();
            }

            Entry::create([
                'student_id' => $student->id,
                'audition_id' => $audition->id,
                'for_seating' => 1,
                'for_advancement' => 1,
            ]);

            if (mt_rand(1, 100) > 90) {
                if ($student->grade > 9) {
                    $audition2 = Audition::where('maximum_grade', '=', '12')
                        ->where('id', '!=', $audition->id)
                        ->inRandomOrder()->first();
                }
                if ($student->grade == 9) {
                    $audition2 = Audition::where('maximum_grade', '>', '8')
                        ->where('id', '!=', $audition->id)
                        ->inRandomOrder()->first();
                }
                if ($student->grade == 8) {
                    $audition2 = Audition::where('maximum_grade', '=', '9')
                        ->where('id', '!=', $audition->id)
                        ->inRandomOrder()->first();
                }
                if ($student->grade == 7) {
                    $audition2 = Audition::where('maximum_grade', '=', '7')
                        ->where('id', '!=', $audition->id)
                        ->inRandomOrder()->first();
                }

                Entry::create([
                    'student_id' => $student->id,
                    'audition_id' => $audition2->id,
                    'for_seating' => 1,
                    'for_advancement' => 1,
                ]);
            }

            if (mt_rand(1, 100) > 90) {
                if ($student->grade > 9) {
                    $audition3 = Audition::where('maximum_grade', '=', '12')->where('id', '!=',
                        $audition->id)->where('id', '!=', $audition2->id)->inRandomOrder()->first();
                }
                if ($student->grade == 9) {
                    $audition3 = Audition::where('maximum_grade', '>', '8')->where('id', '!=',
                        $audition->id)->where('id', '!=', $audition2->id)->inRandomOrder()->first();
                }
                if ($student->grade == 8) {
                    $audition3 = Audition::where('maximum_grade', '=', '9')->where('id', '!=',
                        $audition->id)->where('id', '!=', $audition2->id)->inRandomOrder()->first();
                }
                if ($student->grade == 7) {
                    $audition3 = Audition::where('maximum_grade', '=', '7')->where('id', '!=',
                        $audition->id)->where('id', '!=', $audition2->id)->inRandomOrder()->first();
                }

                Entry::create([
                    'student_id' => $student->id,
                    'audition_id' => $audition3->id,
                    'for_seating' => 1,
                    'for_advancement' => 1,
                ]);
            }
        }
    }
}