import time
import os
import webapp2
import jinja2
from google.appengine.ext import db

template_dir = os.path.join(os.path.dirname(__file__), 'templates')
jinja_env = jinja2.Environment(loader = jinja2.FileSystemLoader(template_dir), autoescape=True)

class Post(db.Model):
    title = db.StringProperty(required = True)
    post = db.TextProperty(required = True)
    created = db.DateTimeProperty(auto_now_add = True)

class Handler(webapp2.RequestHandler):
    def write(self, *a, **kw):
        self.response.out.write(*a, **kw)
    def render_str(self, template, **params):
        t = jinja_env.get_template(template)
        return t.render(params)
    def render(self, template, **kw):
        self.write(self.render_str(template, **kw))

class BlogPage(Handler):
    def render_front(self, title="", post="", error=""):
        posts = db.GqlQuery("SELECT * FROM Post ORDER BY created DESC")
        self.render("front.html", posts = posts)
    def get(self):
        self.render_front()

class ParmaLink(Handler):
    def render_front(self, subject="", content=""):
        posts = db.GqlQuery("SELECT * FROM Post ORDER BY created DESC")
        self.render("blogPage.html", subject = posts[0].title, content = posts[0].post, datecreated = posts[0].created)
    def get(self):
        self.render_front()

class NewPost(Handler):
    def render_front(self, subject="", content="", error=""):
        self.render("NewPost.html", subject=subject, content=content, error = error)
    def get(self):
        self.render_front()
    def post(self):
        subject = self.request.get("subject")
        content = self.request.get("content")
        if subject and content:
            a = Post(title = subject, post = content)
            a.put()
            self.redirect("/blog/1000")
        else:
            error = "we need both a Subject and Content!"
            self.render_front(error = error)

app = webapp2.WSGIApplication([('/blog', BlogPage),
                               ('/blog/1000', ParmaLink),
                               ('/blog/newpost', NewPost)], debug=True)