<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class CalendarEvent extends Model
{
    use HasFactory;
    protected $table = 'calendar_events';
    protected $primaryKey = 'id';
    protected $fillable = [
        'title',
        'date',
        'description',
        'notify_parent',
        'notify_admin',
        'notify_teacher',
        'no_school',
        'semester',
        'school_year',
        'notification_sent',
        'created_at',
        'updated_at',
    ];

    // Equivalent to CI4 timestamps
    public $timestamps = true;

    protected $casts = [
        'date'          => 'date',
        'notify_parent' => 'boolean',
        'notify_admin'  => 'boolean',
        'notify_teacher'=> 'boolean',
        'no_school'     => 'boolean',
    ];

    /* ----------------------------------------------------------------------
     * GETTERS – Same behavior as CodeIgniter
     * ---------------------------------------------------------------------- */

    public function getEvents(): array
    {
        $events = $this->orderBy('date', 'ASC')->get()->toArray();
        return $this->withNoSchoolFlag($events);
    }

    public function getEventByDate($date): array
    {
        $events = $this->whereDate('date', $date)->get()->toArray();
        return $this->withNoSchoolFlag($events);
    }

    public function getEventsBySchoolYear(string $schoolYear): array
    {
        $events = $this->where('school_year', $schoolYear)
                       ->orderBy('date', 'ASC')
                       ->get()
                       ->toArray();

        return $this->withNoSchoolFlag($events);
    }

    public function getEventsBySchoolYearAndSemester(string $schoolYear, ?string $semester = null): array
    {
        $query = $this->where('school_year', $schoolYear);

        if (!empty($semester)) {
            $query->where('semester', $semester);
        }

        $events = $query->orderBy('date', 'ASC')->get()->toArray();

        return $this->withNoSchoolFlag($events);
    }

    /* ----------------------------------------------------------------------
     * CREATE EVENT — Eloquent version of addEvent()
     * ---------------------------------------------------------------------- */
    public function addEvent(array $data)
    {
        return $this->create($data);
    }

    /* ----------------------------------------------------------------------
     * UTILITIES — SAME LOGIC YOU HAD IN CI4
     * ---------------------------------------------------------------------- */

    /**
     * Adds computed no_school flag if missing.
     */
    protected function withNoSchoolFlag(array $events): array
    {
        return array_map(function ($event) {

            if (array_key_exists('no_school', $event)) {
                $event['no_school'] = (int)$event['no_school'];
            } else {
                $event['no_school'] = $this->isNoSchoolEvent($event) ? 1 : 0;
            }

            return $event;

        }, $events);
    }

    /**
     * Heuristic detection of no-school days from text.
     */
    protected function isNoSchoolEvent(array $event): bool
    {
        $title = strtolower($event['title'] ?? '');
        $desc  = strtolower($event['description'] ?? '');
        $text  = $title . ' ' . $desc;

        $keywords = ['no school', 'no-school', 'cancel', 'vacation', 'holiday', 'break'];

        foreach ($keywords as $kw) {
            if ($kw !== '' && str_contains($text, $kw)) {
                return true;
            }
        }

        return false;
    }
}