<?php

namespace MakePhar;

class PharBuilder
{

    protected $manifest;

    protected $files = [];

    protected $phar;

    public function __construct(Manifest $manifest)
    {
        $this->manifest = $manifest;
    }

    public function prepare()
    {
        log_debug("Finding files to add...");
        $this->files = $this->manifest->findSourceFiles();
        log_debug("Found %d files", count($this->files));
    }

    public function build()
    {
        // Create the phar
        $phar = new \Phar("/tmp/output.phar");

        // Add files
        log_debug("Adding files to phar archive...");
        foreach ($this->files as $file) {
            $phar->addFile($file->dest?:$file->src, $file->src);
        }

        // Create stub
        if ($this->manifest->getIsLibrary()) {
            log_debug("Creating library stub...");
            // Create library stub
            $stub = '<?php ';
            $stub.= 'if (basename(__FILE__)==basename($_SERVER["SCRIPT_FILENAME"])) { echo "Error: This is a library and can not be executed\n"; exit(1); }';
            $stub.= 'require_once __DIR__."/vendor/autoload.php";';
            $phar->addFromString("index.php", $stub);
        } else {
            log_debug("Creating application stub...");
            // Write application stub
            $stubfile = $this->manifest->getStubFile();
            $stub = '<?php require_once __DIR__."/'.ltrim($stubfile,'/').'";';
            $phar->addFromString("index.php", $stub);
            // Make the phar stub executable
            $mainstub = $phar->createDefaultStub("index.php");
            $mainstub = "#!/usr/bin/env php\n{$mainstub}";
            $phar->setStub($mainstub);
        }

        // Close the phar
        $phar = null;
    }

    public function finalize()
    {
        $output = $this->manifest->getOutput();

        if (file_exists($output)) {
            unlink($output);
        }
        log_debug("Writing %s", $output);
        rename("/tmp/output.phar", $output);

        if (!$this->manifest->getIsLibrary()) {
            chmod($output, 0777);
        }

    }

}