<?php

namespace Yuvayana\Acadlix\Common\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Capsule\Manager as DB;

defined('ABSPATH') || exit();

if (!class_exists(class: 'CourseStatistic')) {
  class CourseStatistic extends Model
  {
    protected $table;

    protected $fillable = [
      'order_item_id',
      'course_id',
      'course_section_content_id',
      'user_id',
      'is_active',
      'is_completed',
      'meta_type',
      'meta_value',
    ];

    public function __construct(array $attributes = [])
    {
      parent::__construct($attributes);

      $this->table = acadlix()->helper()->acadlix_table_prefix('course_statistics');
    }

    public function setMetaValueAttribute($value)
    {
      $this->attributes['meta_value'] = maybe_serialize($value); // phpcs:ignore
    }

    public function getMetaValueAttribute($value)
    {
      return maybe_unserialize($value);
    }

    public function content()
    {
      return $this->belongsTo(acadlix()->model()->courseSectionContent(), 'course_section_content_id', 'ID');
    }

    public function order_item()
    {
      return $this->belongsTo(acadlix()->model()->orderItem(), 'order_item_id', 'id');
    }

    public function course()
    {
      return $this->belongsTo(acadlix()->model()->course(), 'course_id', 'ID')->ofCourse();
    }

    public function user()
    {
      return $this->belongsTo(acadlix()->model()->wpUsers(), 'user_id', 'ID');
    }

    public function user_activity_meta()
    {
      return $this->hasMany(acadlix()->model()->userActivityMeta(), 'type_id', 'id')
        ->where('type', 'course_statistic');
    }

    public function getUserStatsOverview($course_id, $user_id)
    {
      return DB::table($this->table)
        ->where('course_id', $course_id)
        ->where('user_id', $user_id)
        ->selectRaw("
        user_id,

        SUM(
            CASE
                WHEN meta_type = 'lesson'
                AND is_completed = 1
                THEN 1
                ELSE 0
            END
        ) as completed_lessons,

        SUM(
            CASE
                WHEN meta_type = 'quiz'
                AND is_completed = 1
                THEN 1
                ELSE 0
            END
        ) as completed_quizzes
    ")
        ->groupBy('user_id')
        ->first();
    }

    public function delete(){
      $user_activity_meta = $this->user_activity_meta()->get();
      foreach ($user_activity_meta as $meta) {
        if($meta->meta_key === "statistic_ref_id"){
          acadlix()->model()->statisticRef()->where('id', $meta->meta_value)->delete();
        }
        $meta->delete();
      }
      return parent::delete();
    }
  }
}