#!/bin/env python

from flask import Flask
from flask_restful import reqparse, abort, Api, Resource
from flask_httpauth import HTTPBasicAuth

# This "protects" paths with @auth.login_required
auth = HTTPBasicAuth()

# This is a very basic (and dumb) security model
# We'll actually want the @auth.verify_password model,
# which will let us use hashed passwords, etc.

@auth.get_password
def get_password(username):
    if username == 'admin':
        return '12345'
    return None

@auth.error_handler
def unauthorized():
    return abort(401, message='Unauthorized access')


app = Flask(__name__)
api = Api(app)

TODOS = {
    'todo1': {'task': 'build an API'},
    'todo2': {'task': '?????'},
    'todo3': {'task': 'profit!'},
}


def abort_if_todo_doesnt_exist(todo_id):
    if todo_id not in TODOS:
        abort(404, message="Todo {} doesn't exist".format(todo_id))

parser = reqparse.RequestParser()
parser.add_argument('task')


# Todo
# shows a single todo item and lets you delete a todo item

# Yes!  You can add the @auth.login_required to methods of the class.  ! \o/ !

class Todo(Resource):
    def get(self, todo_id):
        abort_if_todo_doesnt_exist(todo_id)
        return TODOS[todo_id]

    def delete(self, todo_id):
        abort_if_todo_doesnt_exist(todo_id)
        del TODOS[todo_id]
        return '', 204

    @auth.login_required
    def put(self, todo_id):
        args = parser.parse_args()
        t = args['task']
        if t is None:
            abort(400, message="I need text for the task. task=...")
        task = {'task': args['task']}
        TODOS[todo_id] = task
        return task, 201


# TodoList
# shows a list of all todos, and lets you POST to add new tasks
class TodoList(Resource):
    def get(self):
        return TODOS

    def post(self):
        args = parser.parse_args()
        todo_id = int(max(TODOS.keys()).lstrip('todo')) + 1
        todo_id = 'todo%i' % todo_id
        TODOS[todo_id] = {'task': args['task']}
        return TODOS[todo_id], 201

##
## Actually setup the Api resource routing here
##
api.add_resource(TodoList, '/todos')
api.add_resource(Todo, '/todos/<todo_id>')


if __name__ == '__main__':
    app.run(port=11022, debug=True)