<?php

namespace App\Services\Admin\Users;

use App\Models\Student;
use App\Models\User;
use Illuminate\Contracts\Pagination\LengthAwarePaginator;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Hash;

class StudentService
{
    public function getAllForSelect(): Collection
    {
        return Student::with(['user.profile', 'department'])->get();
    }

    public function paginated(int $perPage = 25, string $search = '', string $sort = 'created_at', string $direction = 'desc'): LengthAwarePaginator
    {
        return User::with(['profile', 'student.department'])
            ->whereHas('roles', fn ($q) => $q->where('name', 'mahasiswa'))
            ->when($search, fn ($q) => $q->where(function ($query) use ($search) {
                $query->where('username', 'like', "%{$search}%")
                    ->orWhere('email', 'like', "%{$search}%")
                    ->orWhereHas('profile', fn ($q) => $q->where('full_name', 'like', "%{$search}%"))
                    ->orWhereHas('student', fn ($q) => $q->where('student_number', 'like', "%{$search}%"));
            }))
            ->orderBy($sort, $direction)
            ->paginate($perPage);
    }

    public function create(array $data): User
    {
        return DB::transaction(function () use ($data) {
            $user = User::create([
                'username' => $data['username'],
                'email' => $data['email'],
                'password' => Hash::make(config('app.default_password')),
            ]);

            $user->assignRole('mahasiswa');

            $user->profile()->create([
                'full_name' => $data['full_name'],
                'phone_number' => $data['phone_number'],
                'address' => $data['address'],
                'gender' => $data['gender'],
                'birth_date' => $data['birth_date'],
                'birth_place' => $data['birth_place'],
            ]);

            $user->student()->create([
                'student_number' => $data['student_number'],
                'department_id' => $data['department_id'],
                'enrollment_year' => $data['enrollment_year'],
                'academic_advisor_id' => $data['academic_advisor_id'],
                'status' => 'active',
            ]);

            return $user;
        });
    }

    public function update(User $user, array $data): User
    {
        DB::transaction(function () use ($user, $data) {
            $user->update([
                'username' => $data['username'],
                'email' => $data['email'],
            ]);

            $user->profile()->updateOrCreate([], [
                'full_name' => $data['full_name'],
                'phone_number' => $data['phone_number'],
                'address' => $data['address'],
                'gender' => $data['gender'],
                'birth_date' => $data['birth_date'],
                'birth_place' => $data['birth_place'],
            ]);

            $user->student()->updateOrCreate([], [
                'student_number' => $data['student_number'],
                'department_id' => $data['department_id'],
                'enrollment_year' => $data['enrollment_year'],
                'academic_advisor_id' => $data['academic_advisor_id'],
                'status' => $data['status'] ?? null,
            ]);
        });

        return $user->fresh(['profile', 'student.department', 'roles']);
    }

    public function delete(User $user): void
    {
        DB::transaction(function () use ($user) {
            $user->student()->delete();
            $user->profile()->delete();
            $user->delete();
        });
    }

    public function resetPassword(User $user): void
    {
        $user->update([
            'password' => Hash::make(config('app.default_password')),
        ]);
    }
}