# Copyright (C) 2010 Google Inc. All rights reserved.
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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:
            # FIXME: Just grab the entire dashboards directory.
            files = ["aggregate_results.html",
                     "builders.js",
                     "dashboard_base.js",
                     "dygraph-combined.js",
                     "flakiness_dashboard.html",
                     "timeline_explorer.html",
                     "treemap.html",
                     "webtreemap.css",
                     "webtreemap.js"]

        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/")