<?php

namespace App\Models;

use App\Services\CachingService;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Auth;
use App\Traits\DateFormatTrait;


class SubjectTeacher extends Model {

    use DateFormatTrait;

    protected $fillable = [
        'class_section_id',
        'subject_id',
        'teacher_id',
        'class_subject_id',
        'school_id',
    ];
    protected $appends = ['subject_with_name'];
    protected $hidden = ['created_at','updated_at'];

    public function class_section() {
        return $this->belongsTo(ClassSection::class)->with('class', 'section', 'medium')->withTrashed();
    }

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

    // public function class_subject() {
    //     return $this->belongsTo(Subject::class);
    // }

    public function class_subject() {
        return $this->belongsTo(ClassSubject::class);
    }

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

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

    public function scopeOwner($query) {
        if (Auth::user()) {

            if (Auth::user()->hasRole('School Admin')) {
                return $query->where('school_id', Auth::user()->school_id);
            }
    
            if (Auth::user()->hasRole('Teacher')) {
                $cache = app(CachingService::class);
                $currentSemester = $cache->getDefaultSemesterData();
    
                $class_subject_ids = ClassSubject::where(['school_id' => Auth::user()->school_id])->where(function($query) use($currentSemester){
                    (!empty($currentSemester)) ? $query->where('semester_id', $currentSemester->id)->orWhereNull('semester_id') : $query->orWhereNull('semester_id');
                })->pluck('id');
    
                return $query->whereIn('class_subject_id', $class_subject_ids)->where(['teacher_id' => Auth::user()->id, 'school_id' => Auth::user()->school_id]);
            }
            if (Auth::user()->hasRole('Student')) {
                return $query->where('school_id', Auth::user()->school_id);
            }
        }
        return $query;
    }

    public function getSubjectWithNameAttribute() {
        $name = '';
        if ($this->relationLoaded('subject')) {
            if (!empty($this->subject->name)) {
                $name .= $this->subject->name;
            }

            if (!empty($this->subject->type)) {
                $name .= ' (' . $this->subject->type . ')';
            }
        }

        if ($this->relationLoaded('teacher')) {
            $name .= ' - ' . $this->teacher->full_name;
        }
        return $name;
    }

    public function scopeCurrentSemesterData($query){
        $currentSemester = app(CachingService::class)->getDefaultSemesterData();
        if($currentSemester){
            $query->where(function ($query) use($currentSemester){
                $query->whereHas('class_subject',function($q) use($currentSemester) {
                    $q->where('semester_id', $currentSemester->id)->orWhereNull('semester_id');
                });
                
            });
        }
    }

    /**
     * Get the student_subject that owns the SubjectTeacher
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function student_subject()
    {
        return $this->belongsTo(StudentSubject::class, 'class_subject_id', 'class_subject_id');
    }

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

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