from flask import jsonify, abort, make_response, request, url_for, redirect, session
from requests_oauthlib import OAuth2Session
from datetime import datetime
from app import app, db, models
import json

def make_public_ticket(ticket):
	new_ticket = ticket.copy()
	new_ticket['uri'] = url_for('get_ticket', ticket_id=ticket['id'], _external=True)
	return new_ticket

def ticket_to_dict(ticket):
	nt = {}
	nt['id'] = ticket.id

	nt['summary'] = ticket.summary
	nt['body'] = ticket.body

	nt['opened_at'] = ticket.opened_at.strftime('%Y-%m-%dT%H:%M:%S')

	if ticket.updated_at:
		nt['updated_at'] = ticket.updated_at.strftime('%Y-%m-%dT%H:%M:%S')
	else:
		nt['updated_at'] = None

	nt['status'] = ticket.status

	nt['reason'] = ticket.reason

	if ticket.opened_by:
		nt['opened_by'] = {
			'id': ticket.opened_by.id,
			'nickname': ticket.opened_by.nickname,
			'email': ticket.opened_by.email,
		}
	else:
		nt['opened_by'] = {'id': None, 'nickname': None, 'email': None}

	return nt

@app.route('/authorized')
def authorized_callback():
	github = OAuth2Session(app.config['GITHUB_CLIENT_ID'], state=session['oauth_state'])

	token = github.fetch_token(app.config['TOKEN_URL'], client_secret=app.config['GITHUB_CLIENT_SECRET'],
	                           authorization_response=request.url)

	session['oauth_token'] = token

	user_data = github.get('https://api.github.com/user')

	if user_data.status_code == 401:
		abort(401)

	json_data = user_data.json()
	user = models.User.query.filter(models.User.id == json_data['id']).first()
	if not user:
		user = models.User(
			id = json_data['id'],
			nickname = json_data['login'],
			email = json_data['email']
		)
		db.session.add(user)
		db.session.commit()

	return "Your access token is: {}".format(token['access_token'])

@app.route('/login')
def login():
	github = OAuth2Session(app.config['GITHUB_CLIENT_ID'])
	authorization_url, state = github.authorization_url(app.config['AUTHORIZATION_BASE_URL'])

	session['oauth_state'] = state
	return redirect(authorization_url)

@app.route('/tbt/api/1.0/tickets', methods=['GET'])
def get_tickets():
	ts = models.Ticket.query.all()
	tickets = map(ticket_to_dict, ts)
	return jsonify({'tickets': list(map(make_public_ticket, tickets))})

@app.route('/tbt/api/1.0/ticket', methods=['POST'])
def create_ticket():
	if not request.json or not ('summary' and 'body' and 'token') in request.json:
		abort(400)

	token = {"scope": [""], "access_token": request.json['token'], "token_type": "bearer"}
	github = OAuth2Session(app.config['GITHUB_CLIENT_ID'], token=token)
	user_data = github.get('https://api.github.com/user')
	if user_data.status_code == 401:
		abort(401)

	user = models.User.query.get(user_data.json()['id'])

	ticket = models.Ticket(summary=request.json['summary'],
	                       body=request.json['body'],
	                       opened_by=user,
	                       opened_at=datetime.utcnow())
	db.session.add(ticket)
	db.session.commit()

	td = ticket_to_dict(ticket)

	return jsonify({'ticket': make_public_ticket(td)}), 201

@app.route('/tbt/api/1.0/ticket/<int:ticket_id>', methods=['GET'])
def get_ticket(ticket_id):
	ticket = models.Ticket.query.get(ticket_id)
	if not ticket:
		abort(404)

	return jsonify({'ticket': make_public_ticket(ticket_to_dict(ticket))})

@app.route('/tbt/api/1.0/ticket/<int:ticket_id>', methods=['PUT'])
def update_ticket(ticket_id):
	ticket = next((t for t in tickets if t['id'] == ticket_id), None)
	if not ticket:
		abort(404)
	if not request.json:
		abort(400)
	ticket['summary']     = request.json.get('summary', ticket['summary'])
	ticket['body']        = request.json.get('body', ticket['body'])
	ticket['status']      = request.json.get('status', ticket['status'])
	ticket['reason']      = request.json.get('reason', ticket['reason'])
	return jsonify({'ticket': make_public_ticket(ticket)})

@app.route('/tbt/api/1.0/ticket/<int:ticket_id>', methods=['DELETE'])
def delete_ticket(ticket_id):
	ticket = models.Ticket.query.get(ticket_id)
	if not ticket:
		abort(404)

	db.session.delete(ticket)
	db.session.commit()

	return jsonify({'result': True})

@app.errorhandler(404)
def not_found(error):
	return make_response(jsonify({'error': 'Not found'}), 404)