"""
RESTFul url 规范，参考：http://www.pythondoc.com/flask-restful/second.html

==========  ===============================================  =============================
HTTP 方法   URL                                              动作
==========  ===============================================  ==============================
GET         http://[hostname]/todo/api/v1.0/tasks            检索任务列表
GET         http://[hostname]/todo/api/v1.0/tasks/[task_id]  检索某个任务
POST        http://[hostname]/todo/api/v1.0/tasks            创建新任务
PUT         http://[hostname]/todo/api/v1.0/tasks/[task_id]  更新任务
DELETE      http://[hostname]/todo/api/v1.0/tasks/[task_id]  删除任务
==========  ================================================ =============================


命名规范：

# 我们使用 SomeListHandler 命名而不是复数形式方便区分，比如 VideosHandler 和 VideoHandler 不容易区分
"""
class TaskListHandler(BaseHandler):
    def get(self):
        """获取列表"""
        pass

    def post(self):
        """创建一条新的记录"""
        pass


class TaskHandler(BaseHandler):
    def get(self, _id):
        """获取一条记录的信息"""
        pass

    def put(self, _id):
        """更新一条记录的信息"""
        pass

    def delete(self, _id):
        """删除一条记录"""
        pass

# pip install flask Flask-RESTful
from flask import Flask
from flask_restful import reqparse, abort, Api, Resource
from flask import request

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
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

    def put(self, todo_id):
        args = parser.parse_args()
        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):
        print(request.data)
        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


class TaskList(Resource):
    def post(self):
        print(request.data)
        return {"id": 1}


class Ping(Resource):
    def get(self):
        return 'pong'

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


if __name__ == '__main__':
    app.run(debug=True)  # port=5000