from flask import Flask, request

app = Flask(__name__)


@app.route('/login', methods=['POST'])
def login():
    data = request.json
    if 'username' not in data or 'password' not in data:
        return {
            'errcode': -1,
            'errmsg': 'missing params'
        }
    username = data.get('username')
    password = data.get('password')
    if username == 'admin' and password == '1234':
        return {
            'errcode': 0,
            'errmsg': 'welcome!'
        }
    else:
        return {
            'errcode': -1,
            'errmsg': 'username or password error'
        }