<?php

namespace App\Models;

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

class NodeCapacityAlert extends Model
{
    use HasFactory;

    public const TYPE_CAPACITY_WARNING = 'capacity_warning';
    public const TYPE_CAPACITY_CRITICAL = 'capacity_critical';
    public const TYPE_RESOURCE_HIGH = 'resource_high';
    public const TYPE_NEEDS_EXPANSION = 'needs_expansion';

    protected $fillable = [
        'hosting_node_id',
        'alert_type',
        'current_accounts',
        'max_accounts',
        'capacity_percent',
        'resource_usage',
        'message',
        'is_resolved',
        'resolved_by',
        'resolved_at',
        'resolution_notes',
    ];

    protected $casts = [
        'current_accounts' => 'integer',
        'max_accounts' => 'integer',
        'capacity_percent' => 'decimal:2',
        'resource_usage' => 'array',
        'is_resolved' => 'boolean',
        'resolved_at' => 'datetime',
    ];

    public function hostingNode(): BelongsTo
    {
        return $this->belongsTo(HostingNode::class);
    }

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

    public function scopeUnresolved($query)
    {
        return $query->where('is_resolved', false);
    }

    public function scopeCritical($query)
    {
        return $query->whereIn('alert_type', [self::TYPE_CAPACITY_CRITICAL, self::TYPE_NEEDS_EXPANSION]);
    }

    public function resolve(User $admin, ?string $notes = null): void
    {
        $this->update([
            'is_resolved' => true,
            'resolved_by' => $admin->id,
            'resolved_at' => now(),
            'resolution_notes' => $notes,
        ]);
    }

    public function isCritical(): bool
    {
        return in_array($this->alert_type, [self::TYPE_CAPACITY_CRITICAL, self::TYPE_NEEDS_EXPANSION]);
    }
}