<?php

class App_Admin_Tool_Project_Context_BuildFile extends App_Admin_Tool_Project_Context_Abstract
{
    const PHP_FILE_EXTENSION = 'php';
    const TPL_FILE_EXTENSION = 'tpl';
    const JS_FILE_EXTENSION = 'js';

    protected $_classSuffix = null;
    protected $_fileExtension = self::PHP_FILE_EXTENSION;

    public function generate()
    {
        if (empty($this->_filesystemName)) {
            throw new Qs_Db_Exception($this->_errorMap[self::ERROR_FILESYSTEM_NAME_IS_NULL]);
        }
        if (empty($this->_baseDirectory)) {
            throw new  Qs_Db_Exception($this->_errorMap[self::ERROR_BASE_DIRECTORY_IS_NULL]);
        }
        if (empty($this->_moduleName)) {
            throw new  Qs_Db_Exception($this->_errorMap[self::ERROR_MODULE_NAME_IS_NULL]);
        }
        $this->_initProperties();
        $codeGenFile = new Zend_CodeGenerator_Php_File(array_merge(
            array('fileName' => $this->getFullPath()),
            $this->_getContext()
        ));
        $codeGenFile->generate();
        return $codeGenFile->write();
    }

    protected function _initProperties()
    {
        $this->_classBase = 'App_' . $this->_moduleName . '_';

        $this->_fileExtension = strtolower(substr(
            $this->getFilesystemName(), strrpos($this->getFilesystemName(), '.') + 1));

        $this->_classSuffix = ucfirst(strtolower(substr(
            $this->getFilesystemName(), 0, strrpos($this->getFilesystemName(), '.'))));

        return $this;
    }

    protected function _getContext()
    {
        $baseDirectoryNamePart = '';
        $baseDirectoryArray = explode(DIRECTORY_SEPARATOR, $this->getBaseDirectory());
        if (sizeof($baseDirectoryArray) > App_Admin_Tool_Project_Provider_Module::MODULE_DIRECTORY_LEVEL) {
            $baseDirectoryNamePart .= implode('',
                array_slice($baseDirectoryArray, App_Admin_Tool_Project_Provider_Module::MODULE_DIRECTORY_LEVEL));
        }
        $contextClassName = 'App_Admin_Tool_Project_Context_File_' . ucfirst($this->_fileExtension) . '_'
            . ($this->_fileExtension == self::JS_FILE_EXTENSION
                ? 'General' : ($baseDirectoryNamePart . $this->_classSuffix));
        $options = array(
            'moduleName'    => $this->_moduleName,       // Tool
            'classBase'     => $this->_classBase,        // [App_Admin_]Tool
            'classSuffix'   => $this->_classSuffix,      // App_Admin_[Tool]
            'baseDirectory' => $this->getBaseDirectory() // App/Admin or App/Admin/Tool etc.
        );
        $contextClassNameDefault = 'App_Admin_Tool_Project_Context_File_Default_' . ucfirst($this->_fileExtension);
        /** @var App_Admin_Tool_Project_Context_File_Abstract $contextClassObj */
        $contextClassObj = new $contextClassNameDefault($options);
        $context = $contextClassObj->getContext();
        if (class_exists($contextClassName)) {
            $contextClassObj = new $contextClassName($options);
            if ($contextClassObj instanceof App_Admin_Tool_Project_Context_File_Abstract &&
                method_exists($contextClassObj, 'getContext')
            ) {
                $context = $contextClassObj->getContext();
            }
        }
        return $context;
    }

    /**
     * @return App_Admin_Tool_Project_Context_BuildFile
     */
    public function delete()
    {
        unlink($this->getFullPath());
        return $this;
    }

    /**
     * @return bool
     */
    public function exists()
    {
        return file_exists($this->getFullPath());
    }
}