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import logging

import mimetypes

import urllib2

from google.appengine.api import users

from google.appengine.ext import webapp

from google.appengine.ext.webapp import template

from model.dashboardfile import DashboardFile

PARAM_FILE = "file"

def get_content_type(filename):

    return mimetypes.guess_type(filename)[0] or "application/octet-stream"

class GetDashboardFile(webapp.RequestHandler):

    def get(self, resource):

        if not resource:

            logging.debug("Getting dashboard file list.")

            return self._get_file_list()

        filename = str(urllib2.unquote(resource))

        logging.debug("Getting dashboard file: %s", filename)

        files = DashboardFile.get_files(filename)

        if not files:

            logging.error("Failed to find dashboard file: %s, request: %s",

                filename, self.request)

            self.response.set_status(404)

            return

        content_type = "%s; charset=utf-8" % get_content_type(filename)

        logging.info("content type: %s", content_type)

        self.response.headers["Content-Type"] = content_type

        self.response.out.write(files[0].data)

    def _get_file_list(self):

        logging.info("getting dashboard file list.")

        files = DashboardFile.get_files("", 100)

        if not files:

            logging.info("Failed to find dashboard files.")

            self.response.set_status(404)

            return

        template_values = {

            "admin": users.is_current_user_admin(),

            "files": files,

        }

        self.response.out.write(

            template.render("templates/dashboardfilelist.html",

                template_values))

class UpdateDashboardFile(webapp.RequestHandler):

    def get(self):

        files = self.request.get_all(PARAM_FILE)

        if not files:

            files = ["flakiness_dashboard.html",

                     "dashboard_base.js",

                     "aggregate_results.html"]

        errors = []

        for file in files:

            if not DashboardFile.update_file(file):

                errors.append("Failed to update file: %s" % file)

        if errors:

            messages = "; ".join(errors)

            logging.warning(messages)

            self.response.set_status(500, messages)

            self.response.out.write("FAIL")

        else:

            self.response.set_status(200)

            self.response.out.write("OK")

class DeleteDashboardFile(webapp.RequestHandler):

    def get(self):

        files = self.request.get_all(PARAM_FILE)

        if not files:

            logging.warning("No dashboard file to delete.")

            self.response.set_status(400)

            return

        for file in files:

            DashboardFile.delete_file(file)

        # Display dashboard file list after deleting the file.

        self.redirect("/dashboards/")