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<?php

namespace App\Models;

use App\Repositories\StudentSubject\StudentSubjectInterface;
use App\Services\CachingService;
use App\Models\SessionYear;
use App\Traits\DateFormatTrait;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\HasManyThrough;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Notifications\Notifiable;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Storage;
use Laravel\Sanctum\HasApiTokens;
use Spatie\Permission\Traits\HasPermissions;
use Spatie\Permission\Traits\HasRoles;

class User extends Authenticatable implements MustVerifyEmail
{
    use HasApiTokens, HasFactory, Notifiable, HasRoles, SoftDeletes, HasPermissions, DateFormatTrait;

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'first_name',
        'last_name',
        'email',
        'mobile',
        'image',
        'password',
        'current_address',
        'permanent_address',
        'school_id',
        'gender',
        'dob',
        'occupation',
        'reset_request',
        'status',
        'deleted_at',
        'email_verified_at',
        'two_factor_secret',
        'two_factor_expires_at',
        'two_factor_enabled'
    ];

    protected static function boot()
    {
        parent::boot();
        static::deleting(static function ($user) { // before delete() method call this
            if ($user->isForceDeleting() && $user->getRawOriginal('image') && Storage::disk('public')->exists($user->getRawOriginal('image'))) {
                Storage::disk('public')->delete($user->getRawOriginal('image'));
            }
        });
    }

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password',
        'remember_token',
    ];

    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'email_verified_at' => 'datetime',
    ];

    protected $appends = ['full_name', 'school_names', 'role'];

    public function student()
    {
        return $this->hasOne(Students::class, 'user_id', 'id')->withTrashed()->owner();
    }

    public function promote_student()
    {
        return $this->hasMany(PromoteStudent::class, 'student_id', 'id');
    }
    public function studentWithoutOwner()
    {
        return $this->hasOne(Students::class, 'user_id', 'id')
            ->withTrashed();
    }

    // public function parent() {
    //     return $this->hasOne(Parents::class, 'user_id', 'id');
    // }

    public function staff()
    {
        return $this->hasOne(Staff::class, 'user_id', 'id');
    }

    public function class_section_teacher()
    {
        return $this->hasOne(ClassSection::class, 'class_teacher_id')->withTrashed();
    }

    /**
     * This method will only work with Teacher Role
     * @return HasManyThrough
     */
    public function timetable()
    {

        return $this->hasManyThrough(Timetable::class, SubjectTeacher::class, 'teacher_id', 'subject_teacher_id');
    }

    public function subjectTeachers()
    {
        return $this->hasMany(SubjectTeacher::class, 'teacher_id');
    }

    public function school()
    {
        return $this->belongsTo(School::class)->withTrashed();
    }

    public function students()
    {
        return $this->hasOne(Students::class, 'user_id', 'id')->owner();
    }

    public function session_year()
    {
        return $this->hasOne(SessionYear::class, 'id', 'session_year_id');
    }

    //    public function guardianRelationChild() {
    //        return $this->hasMany(Students::class, 'guardian_id');
    //    }

    public function scopeOwner($query)
    {
        if (Auth::user()) {
            if (Auth::user()->school_id) {
                if (Auth::user()->hasRole('School Admin')) {
                    $query->where('school_id', Auth::user()->school_id);
                } else if (Auth::user()->hasRole('Teacher')) {
                    $query->where('school_id', Auth::user()->school_id);
                } else if (Auth::user()->hasRole('Student')) {
                    $query->where('school_id', Auth::user()->school_id);
                } else {
                    $query->where('school_id', Auth::user()->school_id);
                }
            } else {
                if (Auth::user()->hasRole('Super Admin')) {
                    $query->where('school_id', null);
                } else if (Auth::user()->hasRole('Guardian')) {
                    $childId = request('child_id');
                    $studentAuth = Students::where('id', $childId)->first();
                    $query->where('school_id', $studentAuth->school_id);
                } else {
                    $query->where('school_id', null);
                }
            }

            // Apply joining date filter for staff-related users (History-Awareness)
            if (!Auth::user()->hasRole('Super Admin')) {
                // Session Resolution (Prioritize Request Parameter)
                $sessionYearId = request('session_year_id');
                $sessionYear = null;
                if ($sessionYearId) {
                    $sessionYear = app(SessionYear::class)->find($sessionYearId);
                }
                if (!$sessionYear) {
                    $sessionYear = app(CachingService::class)->getSessionYear();
                }

                if ($sessionYear) {
                    // Negative Exclusion Strategy (Recursion Safe)
                    // Hide anyone who HAS a staff record but the joining date is in the future.
                    $query->whereDoesntHave('staff', function ($sq) use ($sessionYear) {
                        $sq->withoutGlobalScopes()->where('joining_date', '>', $sessionYear->original_end_date);
                    });
                }
            }
        }


        return $query;
    }

    /**
     * Get all of the support_school for the User
     *
     * @return HasMany
     */
    public function support_school()
    {
        return $this->hasMany(StaffSupportSchool::class, 'user_id', 'id');
    }


    //Getter Attributes
    public function getImageAttribute($value)
    {
        if ($value) {
            return url(Storage::url($value));
        }
        return asset('assets/dummy_logo.jpg');
    }

    public function getFullNameAttribute()
    {
        return $this->first_name . ' ' . $this->last_name;
    }


    public function guardianRelationChild()
    {
        return $this->hasMany(Students::class, 'guardian_id');
    }

    public function child()
    {
        return $this->hasMany(Students::class, 'guardian_id')->withTrashed()->owner();
    }


    public function teacher()
    {

        return $this->hasOne(Staff::class, 'user_id', 'id')->withoutGlobalScopes();
    }


    public function fees_paids()
    {
        return $this->hasMany(FeesPaid::class, 'student_id')->withTrashed();
    }

    public function fees_paid()
    {
        return $this->hasOne(FeesPaid::class, 'student_id')->withTrashed();
    }

    public function optional_fees()
    {
        return $this->hasMany(OptionalFee::class, 'student_id')->withTrashed();
    }

    public function compulsory_fees()
    {
        return $this->hasMany(CompulsoryFee::class, 'student_id')->withTrashed();
    }

    public function features()
    {
        // Current active features set to sidebar menu
        $addons = Auth::user()->school->current_addon->pluck('name')->toArray();
        $subscription = Auth::user()->school->current_subscription->features->pluck('name')->toArray();

        return array_merge($addons, $subscription);
    }

    public function exam_result()
    {
        return $this->hasMany(ExamResult::class, 'student_id', 'id');
    }

    public function exam_marks()
    {
        return $this->hasMany(ExamMarks::class, 'student_id', 'id');
    }

    public function marks()
    {
        return $this->hasMany(ExamMarks::class, 'student_id', 'id');
    }

    public function online_exam_attempts()
    {
        return $this->hasMany(StudentOnlineExamStatus::class, 'student_id', 'id');
    }

    protected function setDobAttribute($value)
    {
        $this->attributes['dob'] = date('Y-m-d', strtotime($value));
    }

    public function extra_student_details()
    {
        return $this->hasMany(ExtraStudentData::class, 'user_id', 'id')->withTrashed();
    }

    public function extra_user_details()
    {
        return $this->hasMany(ExtraStudentData::class, 'user_id', 'id')->withTrashed();
    }

    public function selectedStudentSubjects()
    {
        $studentSubject = app(StudentSubjectInterface::class);
        $cache = app(CachingService::class);
        $currentSemester = $cache->getDefaultSemesterData($this->school_id);

        $core_subjects = $this->class_section->class->core_subjects()->where(function ($query) use ($currentSemester) {
            (isset($currentSemester) && !empty($currentSemester)) ? $query->where('semester_id', $currentSemester->id)->orWhereNull('semester_id') : $query->orWhereNull('semester_id');
        })->get();

        $subjects = $core_subjects->toArray();

        $elective_subject_count = $this->class_section->class->elective_subject_groups()->where(function ($query) use ($currentSemester) {
            (isset($currentSemester) && !empty($currentSemester)) ? $query->where('semester_id', $currentSemester->id)->orWhereNull('semester_id') : $query->orWhereNull('semester_id');
        })->count();

        if ($elective_subject_count > 0) {
            $elective_subjects = $studentSubject->builder()->where('student_id', $this->id)->with('class_subject.subject')->get();
            $subjects = array_merge($subjects, $elective_subjects->toArray());
        }
        return collect($subjects);
    }


    public function currentSemesterClassSubjects()
    {
        $cache = app(CachingService::class);
        $currentSemester = $cache->getDefaultSemesterData();
        $core_subjects = $this->class_section->class->core_subjects()->where(function ($query) use ($currentSemester) {
            (isset($currentSemester) && !empty($currentSemester)) ? $query->where('semester_id', $currentSemester->id)->orWhereNull('semester_id') : $query->orWhereNull('semester_id');
        })->get();
        $elective_subjects = $this->class_section->class->elective_subject_groups()->where(function ($query) use ($currentSemester) {
            (isset($currentSemester) && !empty($currentSemester)) ? $query->where('semester_id', $currentSemester->id)->orWhereNull('semester_id') : $query->orWhereNull('semester_id');
        })->with('subjects')->get();
        return ['core_subject' => $core_subjects, 'elective_subject_group' => $elective_subjects];
    }

    /**
     * Get the user_status associated with the User
     *
     * @return \Illuminate\Database\Eloquent\Relations\HasOne
     */
    public function user_status()
    {
        return $this->hasOne(UserStatusForNextCycle::class);
    }
    public function getSchoolIdAttribute($value)
    {
        if (!empty($value)) {
            return $value;
        }

        if (Auth::check() && Auth::user()->hasRole('Guardian')) {
            $child_id = request('child_id');
            $user = self::select('school_id')->whereHas('student', function ($q) use ($child_id) {
                $q->where('id', $child_id);
            })->first();

            return $user->school_id ?? null;
        }

        return null;
    }

    public function getSchoolNamesAttribute()
    {
        if ($this->relationLoaded('support_school')) {
            $schools = $this->support_school->pluck('school.name')->toArray();
            return implode(", ", $schools);
        }
        return '';
    }

    public function getRoleAttribute()
    {
        if ($this->relationLoaded('roles') && $this->roles->isNotEmpty()) {
            return $this->roles->first()->name ?? '';
        }
    }

    /**
     * Get all of the class_teacher for the User
     *
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function class_teacher()
    {
        return $this->hasMany(ClassTeacher::class, 'teacher_id');
    }

    public function getConnectionName()
    {
        // Replace this with your logic to determine the connection name
        // For example, you might get it from session or config
        return session('db_connection_name') ?? config('database.default');
    }

    /**
     * Get all of the student_subject for the User
     *
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function student_subject()
    {
        return $this->hasMany(StudentSubject::class, 'student_id');
    }

    public function extra_user_datas()
    {
        return $this->hasMany(ExtraStudentData::class, 'user_id');
    }

    public function getCreatedAtAttribute()
    {
        return $this->formatDateValue($this->getRawOriginal('created_at'));
    }

    public function getUpdatedAtAttribute()
    {
        return $this->formatDateValue($this->getRawOriginal('updated_at'));
    }

    public function getDobAttribute($value)
    {
        return $this->formatDateOnly($value);
    }

    /**
     * Get all of the diary_student for the User
     *
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function diary_student(): HasMany
    {
        return $this->hasMany(DiaryStudent::class, 'student_id', 'id');
    }

    public function notifications()
    {
        return $this->belongsToMany(Notification::class, 'user_notifications', 'user_id', 'notification_id')->withTimestamps();
    }

    /**
     * Get all FCM tokens for the user.
     *
     * @return HasMany
     */
    public function fcmTokens(): HasMany
    {
        return $this->hasMany(FcmToken::class);
    }

    public function getDobDateAttribute()
    {
        return date('d - M', strtotime($this->getRawOriginal('dob')));
    }
}