<?php

namespace VfxApply\Plugin\Executor;

use VfxApply\Plugin;
use VfxApply\Input;
use VfxApply\Output;
use VfxApply\Preset;

class Operation
{
    protected $name;

    protected $info;

    protected $parser;

    protected $command;

    protected $helper;

    protected $script;

    public function __construct($name, array $data)
    {
        $_ = function($a,$k,$d=null) { return empty($a[$k])?$d:$a[$k]; };
        $this->name = $name;
        $this->info = $_($data,'info');
        $this->command = $_($data,'exec');
        $this->helper = $_($data,'call');
        $this->parser = new Parser($_($data,'parse'), $_($data,'extract'));
    }

    public function getName()
    {
        return $this->name;
    }

    public function getInfo()
    {
        return $this->info;
    }

    public function setScript(Script $script)
    {
        $this->script = $script;
    }

    public function execute(array $env, $dialog)
    {
        if ($this->helper) {
            $helper = $this->script->getHelper($this->helper);
            $helper->call($env);
        }

        if (!$this->command) {
            return;
        }
        $cmdl = $this->script->parseVariable($this->command, $env);
        //printf(" cmd: %s\n", $this->command);
        //printf("   eval: %s\n", $cmdl);

        $this->parser->prepareExtractors($this->script, $env);

        $descr = [
            0 => [ 'pipe', 'r' ],
            1 => [ 'pipe', 'w' ],
            2 => [ 'pipe', 'w' ]
        ];
        echo "Exec: ".$cmdl."\n";
        $proc = proc_open($cmdl, $descr, $pipes);
        $tot = (int)$env['frames']-1;
        printf("\r%s [%s]", $this->info, $this->name);
        $this->parser->parse($pipes, function ($status) use ($tot, $dialog) {
            $curr = (int)$status['frame'];
            $pc = min(100,100/$tot*$curr);
            $dialog->setProgress($pc);
            $out = sprintf("%s [%s]: %.1f%%", $this->info, $this->name, $pc);
            $dialog->setText($out);
            echo "\r{$out}";
        });
        proc_close($proc);
        printf("\n");

    }
}