from xml.dom import minidom

from os.path import join, exists
from os import mkdir
import re

class Settings:
    """
        Settings Class
            For reading and writting XML Files to hold the settings for scripts
        Coded by Donno
    """
    settingVer = 1.0
    scriptTitle = ""
    filename = ""
    settings = {}
    def __init__(self,filename,scriptTitle):
        self.scriptTitle = scriptTitle
        self.filename = filename
        self.load()

    def load(self):
        filepath = join("P:\\","script_settings", self.filename)
        if exists(filepath):
            try:
                xmldoc = minidom.parse(filepath)
                xmlsettings = xmldoc.getElementsByTagName("settings")[0]
            except:
                self.create()
                return

            """
            For this to be great xml would need to be in form  <setting name="username">hello</setting>
            Because then xmldoc.getElementsByTagName("setting")  would be possible then you use getAttribute to crap the name of the setting 'username'
            SO USE REGEXP unless I (Donno) decide to write a hack my self or change the formatting, or unless someone else wants to write the
            hack to get it working <username>donno</username> to be read
            """

            data = xmlsettings.toxml()
            regp = '<([^<]*)>([^</]*)</'
            save_info = re.compile(regp,re.IGNORECASE).findall(data)
            for x in save_info:
                self.settings[x[0]] = x[1].strip()
            print self.settings
        else:
            self.create()

    def create(self):
        filepath = join("P:\\","script_settings", self.filename)
        if not exists(filepath):
            self.saveXMLfromArray()

    def setDefaultSettings(self):
        self.settings = {"usernane": "donno","something": "true"}

    def saveXMLfromArray(self):
        """
            saveXMLfromArray
                Creates a dom Document of the settings array and saves it to the xml
        """
        self.setDefaultSettings()
        # File doesn't exist so create it
        xmldoc = minidom.Document()
        # Create the <settings> base element
        settingElem = xmldoc.createElement("settings")
        settingElem.setAttribute("setting-version", str(self.settingVer))
        settingElem.setAttribute("name", self.scriptTitle)
        xmldoc.appendChild(settingElem)

        # Create a element for each setting with the textnode as the value
        for key in self.settings:
            newElem = xmldoc.createElement(key)
            newElem.appendChild(xmldoc.createTextNode(self.settings[key]))
            settingElem.appendChild(newElem)

        self.save(xmldoc)

    def save(self,xmldoc):
        """
            This function takes a xml Document object and saves it to XML
        """
        filepath = join("P:\\","script_settings", self.filename)
        if not exists(join("P:\\","script_settings")):
            mkdir(join("P:\\","script_settings"))

        fsock = open(filepath,"w")
        fsock.write(xmldoc.toprettyxml(indent="    "))
        fsock.close()