<?php

namespace App\Models;

use App\Models\BaseModel;

class Project extends BaseModel
{
    protected $table = 'project';
    protected $primaryKey       = 'id';
    protected $useAutoIncrement = true;
    protected $fillable = [
        'student_id',
        'school_id',
        'class_section_id',
        'updated_by',
        'project_index',
        'score',
        'comment',
        'semester',
        'school_year',
        'created_at',
        'updated_at',
    ];
    public $timestamps = true;

    /**
     * Calculate the average project score for a given student, semester, and school year.
     *
     * @param int $studentId The student's ID.
     * @param string $semester The semester (e.g., 'Fall', 'Spring').
     * @param string $schoolYear The school year (e.g., '2024-2025').
     * @return float The average project score, or 0 if no scores are found.
     */
    public function getAverageProjectScore(int $studentId, string $semester, string $schoolYear): float
    {
        // Fetch the project scores for the given student, semester, and school year
        $builder = $this->builder();
        $builder->select('score')
                ->where('student_id', $studentId)
                ->where('semester', $semester)
                ->where('school_year', $schoolYear);
        
        // Execute the query and get the results
        $query = $builder->get();
        $results = $query->getResultArray();

        // If there are no scores, return 0
        if (empty($results)) {
            return 0.0;
        }

        // Calculate the average score
        $totalScore = 0;
        $scoreCount = count($results);

        foreach ($results as $result) {
            $totalScore += $result['score'];
        }

        return $totalScore / $scoreCount;
    }
}