<?php

namespace App\Services\Tool;

use App\Jobs\ToolRunJob;
use App\Services\OutputSink;
use Illuminate\Support\Facades\DB;

/**
 * 子 Run 调度：为单个 tool_call 创建 Run 并投递队列，幂等。
 */
class ToolRunDispatcher
{
    public function __construct(private readonly OutputSink $outputSink)
    {
    }

    public function dispatch(string $sessionId, ToolCall $toolCall): string
    {
        $shouldDispatch = false;

        DB::transaction(function () use ($sessionId, $toolCall, &$shouldDispatch): void {
            $wasDeduped = null;
            $this->outputSink->appendRunStatus($sessionId, $toolCall->runId, 'RUNNING', [
                'parent_run_id' => $toolCall->parentRunId,
                'tool_call_id' => $toolCall->toolCallId,
                'dedupe_key' => "run:{$toolCall->runId}:status:RUNNING",
            ], $wasDeduped);

            $shouldDispatch = ! $wasDeduped;
        });

        if ($shouldDispatch) {
            ToolRunJob::dispatchSync($sessionId, $toolCall->toArray());
        }

        return $toolCall->runId;
    }
}