# 初始化文件
from flask import Flask
from flask_sqlalchemy import SQLAlchemy

from  .views import blue
from .exts import  init_exts
from config import BaseConfig
from .urls import  *


def create_app():
    app = Flask(__name__)
    # 添加配置文件
    app.config.from_object(BaseConfig)
    # 注册蓝图
    app.register_blueprint(blueprint=blue)
    # 初始化插件
    init_exts(app= app)

    HOSTNAME = "localhost"
    PORT = 3306
    USERNAME = "root"
    PASSWORD = "123456"
    DATABASE = "bs_jaotong"

    app.config[
        'SQLALCHEMY_DATABASE_URI'] = f"mysql+pymysql://{USERNAME}:{PASSWORD}@{HOSTNAME}:{PORT}/{DATABASE}?charset=utf8mb4"
    return  app