<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\SoftDeletes;

class EmailServer extends Model
{
    use HasFactory, SoftDeletes;

    public const ROLE_PRIMARY = 'primary';

    public const ROLE_EXTENSION = 'extension';

    public const PROVIDER_LOCAL = 'local';

    public const PROVIDER_CONTABO = 'contabo';

    public const PROVIDER_MANUAL = 'manual';

    public const STATUS_PROVISIONING = 'provisioning';

    public const STATUS_ACTIVE = 'active';

    public const STATUS_MAINTENANCE = 'maintenance';

    public const STATUS_FULL = 'full';

    public const STATUS_DECOMMISSIONED = 'decommissioned';

    protected $fillable = [
        'name',
        'hostname',
        'ip_address',
        'ipv6_address',
        'mail_host',
        'role',
        'primary_email_server_id',
        'pool_vmail_root',
        'provider',
        'provider_instance_id',
        'region',
        'cpu_cores',
        'ram_mb',
        'disk_gb',
        'max_domains',
        'max_mailboxes',
        'current_domains',
        'current_mailboxes',
        'allocated_storage_mb',
        'used_storage_mb',
        'last_usage_sync_at',
        'db_host',
        'db_port',
        'db_database',
        'db_username',
        'db_password',
        'ssh_host',
        'ssh_user',
        'ssh_port',
        'ssh_private_key',
        'status',
        'is_default',
        'last_health_check_at',
        'health_status',
    ];

    protected $casts = [
        'health_status' => 'array',
        'last_health_check_at' => 'datetime',
        'last_usage_sync_at' => 'datetime',
        'is_default' => 'boolean',
        'db_port' => 'integer',
        'ssh_port' => 'integer',
    ];

    protected $hidden = [
        'db_password',
        'ssh_private_key',
    ];

    public function primary(): BelongsTo
    {
        return $this->belongsTo(self::class, 'primary_email_server_id');
    }

    public function extensions(): HasMany
    {
        return $this->hasMany(self::class, 'primary_email_server_id');
    }

    public function emailDomains(): HasMany
    {
        return $this->hasMany(EmailDomain::class);
    }

    public function domains(): HasMany
    {
        return $this->hasMany(Domain::class);
    }

    public function capacityAlerts(): HasMany
    {
        return $this->hasMany(MailServerCapacityAlert::class);
    }

    public function isPrimary(): bool
    {
        return $this->role === self::ROLE_PRIMARY;
    }

    public function isExtension(): bool
    {
        return $this->role === self::ROLE_EXTENSION;
    }

    public function isAvailable(): bool
    {
        return $this->status === self::STATUS_ACTIVE;
    }

    public function poolRoot(): self
    {
        return $this->isExtension() && $this->primary
            ? $this->primary
            : $this;
    }

    public function mailDatabaseServer(): self
    {
        return $this->poolRoot();
    }

    public function scopePrimaries(Builder $query): Builder
    {
        return $query->where('role', self::ROLE_PRIMARY);
    }

    public function scopeAvailable(Builder $query): Builder
    {
        return $query->where('status', self::STATUS_ACTIVE);
    }
}