import os
import datetime
from xml.dom.minidom import parse, parseString
from dynastie.generators.generator import DynastieGenerator
from django.db import models

# TODO : content

class Article(DynastieGenerator):

    def createArticle(self, article, dom, article_elem, root):
        values = {}
        values['title'] = article.title
        values['author'] = article.author.first_name
        values['date'] = article.creation_date.strftime("%d/%m/%Y")
        values['content'] = ''

        self.simpleTransform(values, dom, article_elem, root)

    def parse(self, article, dom, root):
        for node in root.childNodes:
            if node.prefix == 'dyn':
                if node.localName == 'content':
                    article_elem = self.createElement(dom, 'article')
                    self.createArticle(article, dom, article_elem, node)
                    root.replaceChild(article_elem, node)

                continue
            if node.hasChildNodes():
                self.parse(article, dom, node)
        return

    def generate(self, blog, src, output):
        from dynastie.models import Article, Blog

        if not os.path.exists(src + '/_article.html'):
            self.addError('No _article.html found, exiting')
            return self.report

        try:
            dom = parse(src + '/_article.html')
        except xml.dom.DOMException as e:
            self.addError('Error parsing _article.html : ' + e)
            return self.report
            
        if not os.path.exists(output + '/articles'):
            os.mkdir(output + '/articles')

        articles = Article.objects.all()

        for article in articles:
            #print 'Generate ' + filename
            nodes = dom.getElementsByTagName("*")
            self.parse(article, dom, nodes[0])
            filename = output + '/articles/' 
            filename = filename + article.creation_date.strftime("%Y") + '/' + article.creation_date.strftime("%m") + '/' 
            if not os.path.exists(filename):
                os.makedirs(filename)
            filename = filename + article.title_slug + '.html'
            self.writeIfNotTheSame(filename, nodes[0].toxml('utf8'))
            dom = parse(src + '/_article.html')

        if not self.somethingWrote:
            self.addReport('Nothing changed')

        return self.report