Graf v PHP

use RoundlyConsulting\Workflows\Facades\Workflows;
use RoundlyConsulting\Workflows\Graph\Build\{After, Escalate, Party, Stage, Trigger, When};

$graph = Workflows::graph()
    ->settings(timezone: 'Europe/Bratislava', calendar: 'weekdays')
    ->trigger('start', Trigger::event('purchase_request.submitted'))
    ->condition('big', When::field('subject.amount')->gt('50000'))
    ->approval('legal_cfo', stages: [
        Stage::named('Legal')->from(Party::role('legal'))->any(),
        Stage::named('CFO')->from(Party::role('cfo'))->any(),
    ])->escalate(After::businessDays(2), Escalate::reassign(Party::field('subject.approver_manager')))
    ->end('done')
    ->connect('start', 'big')
    ->connect('big', 'legal_cfo', on: 'true')
    ->connect('big', 'done', on: 'false')
    ->connect('legal_cfo', 'done', on: ['approved', 'rejected', 'expired']);

Workflows::definition('purchase-approval', $team)->edit($graph);   // or $graph->toArray() / json_encode($graph)
$graph->validate(subjectType: 'purchase_request', owner: $team);   // the same ValidationReport as versions()->validate()

use RoundlyConsulting\Workflows\Graph\Build\{After, GraphBuilder, Ref};

$graph = GraphBuilder::from($definition->currentVersion)   // or an array; from($g)->toArray() equals $g by content
    ->remove('notify_legal')                                // removes the node and every edge touching it
    ->setField('mark', 'subject.priority', Ref::input('priority'))
    ->retry(5, [10, 60, 300])                                // modifiers apply to the last node added
    ->ui(320, 80, 'Mark priority')
    ->delay('cool_off', After::hours(4))
    ->chain('mark', 'cool_off', 'done');                     // outcome-less edges: next only

use RoundlyConsulting\Workflows\Graph\Build\{GraphBuilder, Party, Trigger};

GraphBuilder::macro('task', fn (string $id, string $title) => $this->node($id, 'acme.create_task', ['title' => $title]));

Workflows::graph()->trigger('start', Trigger::manual())->task('order', 'Order')->end('done')->chain('start', 'order', 'done');

// Host step configs take the value helpers too — they are rendered for you:
Workflows::graph()->node('assign', 'acme.create_task', ['title' => 'Review', 'assignee' => Party::field('subject.owner')]);