<?php

namespace App\Provisioning\Steps\Customer;

use App\Models\ProvisioningRun;
use App\Provisioning\StepResult;
use App\Services\Proxmox\ProxmoxClient;

class CloneVirtualMachine extends CustomerStep
{
    public function __construct(private ProxmoxClient $pve) {}

    public function key(): string
    {
        return 'clone_vm';
    }

    public function maxDuration(): int
    {
        return 900;
    }

    public function execute(ProvisioningRun $run): StepResult
    {
        $instance = $this->instance($run);
        $node = (string) $run->context('node');
        $plan = $this->plan($run);
        $templateVmid = (int) ($plan['template_vmid'] ?? 0);

        if ($templateVmid === 0) {
            return StepResult::fail('template_missing');
        }

        $pve = $this->pve->forHost($instance->host);

        // Idempotent: vmid already minted → resume polling the clone task.
        if ($this->hasResource($run, 'vmid')) {
            return $this->pollClone($pve, $node, (string) $run->context('clone_upid'));
        }

        $vmid = $pve->nextVmid();
        $upid = $pve->cloneVm($node, $templateVmid, $vmid, 'nc-'.$instance->subdomain);

        // [E] persist vmid + task ref BEFORE polling (crash-safe).
        $instance->update(['vmid' => $vmid, 'status' => 'provisioning']);
        $run->mergeContext(['vmid' => $vmid, 'clone_upid' => $upid]);
        $this->recordResource($run, $instance->host, 'vmid', (string) $vmid);

        return $this->pollClone($pve, $node, $upid);
    }

    private function pollClone(ProxmoxClient $pve, string $node, string $upid): StepResult
    {
        $task = $pve->taskStatus($node, $upid);

        if (($task['status'] ?? '') === 'running') {
            return StepResult::poll(10, 'cloning template');
        }
        if (($task['exitstatus'] ?? 'OK') !== 'OK') {
            return StepResult::fail('clone_failed: '.($task['exitstatus'] ?? 'unknown'));
        }

        return StepResult::advance();
    }
}