import csv
import json
import enum
import uuid
import time
import datetime
from collections import OrderedDict
from io import StringIO
from typing import Callable, Iterable, Tuple

import boltons
import flask
import flask_weasyprint
import teal.marshmallow
from boltons import urlutils
from flask import make_response, g, request
from flask import current_app as app
from flask.json import jsonify
from teal.cache import cache
from teal.resource import Resource, View

from ereuse_devicehub import auth
from ereuse_devicehub.db import db
from ereuse_devicehub.resources.device.models import Device
from ereuse_devicehub.resources.did.models import Dpp


class DidView(View):
    """
    This view render one public ans static page for see the links for to do the check
    of one csv file
    """
    def get_url_path(self):
        url = urlutils.URL(request.url)
        url.normalize()
        url.path_parts = url.path_parts[:-2] + ['check', '']
        return url.to_text()

    def get(self, dpp: str):
        self.dpp = dpp
        template = 'dpp.html'
        if len(dpp.split(":")) == 2:
            result = Dpp.query.filter_by(key=dpp).one()
        else:
            result = Device.query.filter_by(chid=dpp).one()
            template = 'chid.html'

        if 'json' not in request.headers['Accept']:
            result = self.get_result(result, template)
            return flask.render_template(template, rq_url=self.get_url_path(),
                    result={"dpp": dpp, "result": result})

        return jsonify(self.get_result(result, template))

    def get_result(self, dpp, template):
        data = {
            'hardware': {},
            'dpp': self.dpp,
        }
        result = {'data': data}

        if template == 'dpp.html':
            data['hardware'] = json.loads(dpp.snapshot.json_hw)
            last_dpp = self.get_last_dpp(dpp)
            url_last = ''
            if last_dpp:
                url_last = 'http://did.ereuse.org/{did}'.format(did=last_dpp)
            data['url_last'] = url_last
            return result

        # if dpp is not a dpp then is a device
        device = dpp
        dpps = []
        for d in device.dpps:
            rr = {'dpp': d.key, 'hardware': json.loads(d.snapshot.json_hw)}
            dpps.append(rr)
        return {'data': dpps}

    def get_last_dpp(self, dpp):
        dpps = [act.dpp[0] for act in dpp.device.actions if act.t == 'Snapshot' and act.dpp]
        last_dpp = ''
        for d in dpps:
            if d.key == dpp.key:
                return last_dpp
            last_dpp = d.key

        return last_dpp


class DidDef(Resource):
    __type__ = 'Did'
    SCHEMA = None
    VIEW = None  # We do not want to create default / documents endpoint
    AUTH = False

    def __init__(self, app,
                 import_name=__name__,
                 static_folder='static',
                 static_url_path=None,
                 template_folder='templates',
                 url_prefix=None,
                 subdomain=None,
                 url_defaults=None,
                 root_path=None,
                 cli_commands: Iterable[Tuple[Callable, str or None]] = tuple()):
        super().__init__(app, import_name, static_folder, static_url_path, template_folder,
                         url_prefix, subdomain, url_defaults, root_path, cli_commands)

        view = DidView.as_view('main', definition=self, auth=app.auth)

        # if self.AUTH:
        #     view = app.auth.requires_auth(view)

        did_view = DidView.as_view('DidView', definition=self, auth=app.auth)
        self.add_url_rule('/<string:dpp>', defaults={}, view_func=did_view, methods={'GET'})