<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Laravel\Sanctum\HasApiTokens;

class AdminUser extends Authenticatable
{
    use HasApiTokens;
    use HasFactory;
    use SoftDeletes;

    protected $table = 'admin_users';

    protected $fillable = [
        'username',
        'password_hash',
        'real_name',
        'mobile',
        'email',
        'avatar_url',
        'status',
        'last_login_at',
        'last_login_ip',
    ];

    protected $hidden = [
        'password_hash',
    ];

    protected $casts = [
        'last_login_at' => 'datetime',
        'status' => 'integer',
    ];

    public function getAuthPassword(): string
    {
        return $this->password_hash;
    }

    public function roles(): BelongsToMany
    {
        return $this->belongsToMany(Role::class, 'admin_user_roles', 'admin_user_id', 'role_id');
    }

    public function universities(): BelongsToMany
    {
        return $this->belongsToMany(
            University::class,
            'admin_user_universities',
            'admin_user_id',
            'university_id'
        );
    }

    public function researchDirections(): BelongsToMany
    {
        return $this->belongsToMany(
            ResearchDirection::class,
            'admin_user_research_directions',
            'admin_user_id',
            'research_direction_id'
        );
    }

    public function isGridMember(): bool
    {
        return $this->roles()->where('code', 'grid_member')->exists();
    }

    public function isSuperAdmin(): bool
    {
        return $this->roles()->where('code', 'super_admin')->exists();
    }

    /**
     * 首期不在接口层使用权限码；返回空数组。后续启用 `permissions` 时再实现聚合逻辑。
     *
     * @return array<int, string>
     */
    public function permissionCodes(): array
    {
        return [];
    }
}