<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class Anuncio extends Model
{
    protected $fillable = [
        'user_id', 'title', 'body', 'image_path',
        'type', 'audience', 'expires_at', 'active',
    ];

    protected $casts = [
        'audience'   => 'array',
        'expires_at' => 'datetime',
        'active'     => 'boolean',
    ];

    // Configuración visual por tipo
    public const TYPES = [
        'info'          => ['label' => 'Información',   'color' => 'primary', 'icon' => 'fa-info-circle'],
        'promocion'     => ['label' => 'Promoción',     'color' => 'success', 'icon' => 'fa-tag'],
        'mantenimiento' => ['label' => 'Mantenimiento', 'color' => 'warning', 'icon' => 'fa-tools'],
        'aviso'         => ['label' => 'Aviso',         'color' => 'danger',  'icon' => 'fa-exclamation-triangle'],
    ];

    public const ROLES = [
        'all'                     => 'Todos',
        'Alumno'                  => 'Alumnos',
        'Docente'                 => 'Docentes',
        'Admin'                   => 'Administradores',
        'Control escolar'         => 'Control escolar',
        'Coordinación académica'  => 'Coordinación académica',
        'Programador'             => 'Programadores',
        'Promotor'                => 'Promotores',
    ];

    public function author(): BelongsTo
    {
        return $this->belongsTo(User::class, 'user_id');
    }

    // Solo activos y no vencidos
    public function scopeVigentes(Builder $q): void
    {
        $q->where('active', true)
          ->where(fn($q) => $q->whereNull('expires_at')->orWhere('expires_at', '>', now()));
    }

    // Filtra por roles del usuario
    public function scopeParaRoles(Builder $q, array $roles): void
    {
        $q->where(function ($q) use ($roles) {
            $q->whereJsonContains('audience', 'all');
            foreach ($roles as $role) {
                $q->orWhereJsonContains('audience', $role);
            }
        });
    }

    public function typeConfig(): array
    {
        return self::TYPES[$this->type] ?? self::TYPES['info'];
    }

    public function isExpired(): bool
    {
        return $this->expires_at && $this->expires_at->isPast();
    }
}