<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class AttendanceRecord extends Model
{
    protected $table = 'attendance_record';
    protected $primaryKey = 'id';

    // Enable timestamps using custom CI fields
    public $timestamps = true;
    const CREATED_AT = 'created_at';
    const UPDATED_AT = 'updated_at';
    protected $fillable = [
        'class_section_id',
        'student_id',
        'school_id',
        'total_absence',
        'total_late',
        'total_presence',
        'total_attendance',
        'semester',
        'school_year',
        'modified_by',
        'created_at',
        'updated_at',
    ];

    protected $casts = [
        'class_section_id' => 'integer',
        'student_id'       => 'integer',
        'school_id'        => 'integer',
        'total_absence'    => 'integer',
        'total_late'       => 'integer',
        'total_presence'   => 'integer',
        'total_attendance' => 'integer',
        'modified_by'      => 'integer',

        'created_at'       => 'datetime',
        'updated_at'       => 'datetime',
    ];

    /*
    |--------------------------------------------------------------------------
    | Relationships
    |--------------------------------------------------------------------------
    */

    public function student()
    {
        return $this->belongsTo(Student::class, 'student_id');
    }

    public function classSection()
    {
        return $this->belongsTo(ClassSection::class, 'class_section_id');
    }

    public function modifier()
    {
        return $this->belongsTo(User::class, 'modified_by');
    }

    /*
    |--------------------------------------------------------------------------
    | Converted CodeIgniter Methods
    |--------------------------------------------------------------------------
    */

    /**
     * Equivalent to CI getAttendanceRecordByClass()
     */
    public function getAttendanceRecordByClass($classSectionId, $semester, $schoolYear)
    {
        return self::where('class_section_id', $classSectionId)
            ->where('semester', $semester)
            ->where('school_year', $schoolYear)
            ->get()
            ->toArray();
    }

    /**
     * Equivalent to CI getAttendanceRecord()
     */
    public function getAttendanceRecord($studentId, $classSectionId, $semester, $schoolYear)
    {
        return self::where([
                'student_id'       => $studentId,
                'class_section_id' => $classSectionId,
                'semester'         => $semester,
                'school_year'      => $schoolYear,
            ])->first()?->toArray();
    }

    /**
     * Equivalent to CI updateAttendanceRecord()
     */
    public function updateAttendanceRecord($attendanceId, $data)
    {
        return self::where('id', $attendanceId)->update($data) > 0;
    }

    /**
     * Laravel-optimized version of CI incrementAttendanceCounters()
     * Uses atomic SQL increments.
     */
    public function incrementAttendanceCounters(
        int $studentId,
        int $classSectionId,
        string $semester,
        string $schoolYear,
        array $increments
    ): bool {
        $record = self::where([
            'student_id'       => $studentId,
            'class_section_id' => $classSectionId,
            'semester'         => $semester,
            'school_year'      => $schoolYear,
        ])->first();

        if (!$record) {
            return false;
        }

        foreach ($increments as $field => $value) {
            if (in_array($field, [
                'total_absence',
                'total_late',
                'total_presence',
                'total_attendance'
            ])) {
                $record->increment($field, $value);
            }
        }

        $record->touch(); // update updated_at
        return true;
    }

    /**
     * Equivalent to CI getTotalAbsences()
     */
    public function getTotalAbsences($studentId, $semester, $schoolYear): int
    {
        $record = self::where('student_id', $studentId)
            ->where('semester', $semester)
            ->where('school_year', $schoolYear)
            ->first();

        return $record?->total_absence ?? 0;
    }
}