from flask import Flask, request,render_template,jsonify,make_response,redirect
from flask_script import Manager
1.# 獲取flask對(duì)象
from utils.functions import login_required

app = Flask(__name__)

2.# 使用router綁定路由和執(zhí)行的視圖函數(shù)的關(guān)聯(lián)關(guān)系
@app.route('/hello/')
def hello():

    return 'hello world'

3.定義參數(shù)規(guī)則# 路由規(guī)則，定義： <轉(zhuǎn)換器:參數(shù)名>
# django中路由定義： int參數(shù): path('/uid/<int:id>/', xxxx)
#                  字符串參數(shù)：path('/uid/<name>/', xxxx)
#                  字符串參數(shù)：path('/uid/<str:name>/', xxxx)
#                  uuid參數(shù)：path('/uid/<uuid:uid>/', xxxx)
#                  path參數(shù)：path('/uid/<path:uid>/', xxxx)
#  正則表達(dá)式 Django2.0以上         re_path('/uid/(\d+)/')
#  正則表達(dá)式 Django2.0以下         url('/uid/(\d+)/')
#                                 url('/uid/(?P<id>\d+)/')

# flask中路由定義: int參數(shù): route('/uid/<int:id>/')
#                字符串: route(‘/uid/<name>/’)
#                字符串: route(‘/uid/<string:name>/’)
#                uuid: route(‘/uid/<uuid:uid>/’)
#                float: route(‘/uid/<float:uid>/’)
#                path路徑: route(‘/uid/<path:uid>/’)



@app.route('/uid/<int:id>/')
def  get_id(id):
    return 'id: {}'.format(id)

@app.route('/uname/<name>/')
def get_name(name):
    print(type(name))
    return 'name:{uname}'.format(uname=name)

@app.route('/uname2/<string:name>/')
def get_name2(name):
    return 'name2:{}'.format(name)

@app.route('/uuid/<uuid:uid>/')
def get_uid(uid):
    return 'uid:%s'% uid

@app.route('/price/<float:p>/')
def get_p(p):
    return 'price:{}'.format(p)

@app.route('/path/<path:pth>/')
def get_pth(pth):
    return 'path:{}'.format(pth)
4. request請(qǐng)求方法
# @app.route('/res/',methods=['GET','POST','PUT'])
# def res():
#     if request.method == 'GET':
#         return 'GET請(qǐng)求響應(yīng)'
#     if request.method == 'POST':
#         return 'POST請(qǐng)求'

@app.route('/res/',methods=['GET','POST','PUT'])
def res():
    if request.method == 'GET':
        # django中GET取值: request.GET.get()   request.GET.getlist()
        # flask中GET取值: request.args.get(key)  request.args.getlist(key)

        names = request.args.getlist('name')
        age = request.args.get('age')
        return 'GET'
    if request.method == 'POST':
        # django中POST取值: request.POST.get()  /  getlist()
        # flask中POST取值: request.form.get()  /   getlist()

        names = request.form.getlist('name')
        age = request.form.get('age')
        return 'POST'

        # 上傳文件
        request.files
        # 獲取cookie
        request.cookies
        # 方式
        request.method
        # 路由
        request.path
    if request.method == 'PUT':
        # put、patch、delete取值方式和post一樣
        # request.form.get() 、 getlist()
        return 'PUT請(qǐng)求響應(yīng)'

@app.route('/req/', methods=['GET', 'POST'])
def req():
    if request.method == 'GET':
        # 響應(yīng)字符串
        # return 'GET請(qǐng)求響應(yīng)'
        # 響應(yīng)頁面
        # return render_template('index.html')
        # 響應(yīng)json數(shù)據(jù)
        # return jsonify({'code': 200, 'msg': '請(qǐng)求成功'})
        # 響應(yīng)中綁定cookie參數(shù)
        # 在Django中: HttpResponse()/redirect()/HttpResponseRedirect()
        # 在Flask中: make_response()
        # response = make_response(render_template('index.html'), 200)
        # response.set_cookie('token', '124567890', max_age=3000)
        # response.delete_cookie('token')
        # return response
        # 重定向（跳轉(zhuǎn)）
        return redirect('/hello/')
5.渲染頁面
@app.route('/login/',methods=['GET','POST'])
def login():
    if request.method == 'GET':
        return render_template('login.html')
    if request.method == 'POST':
        username = request.form.get('username')
        password = request.form.get('password')
        if username == 'aa' and password == '123456':
            # 登陸成功，跳轉(zhuǎn)到首頁
            # redirect和render_template區(qū)別
            res = redirect('/index/')
            res.set_cookie('token','123456',max_age=3000)
            return res
        return render_template('login.html')

@app.route('/index/')
@login_required
def index():
    return render_template('index.html')


if __name__ == '__main__':
    # 啟動(dòng)
    # 解析命令行中傳遞的參數(shù)
    # print(sys.argv)
    # host = sys.argv[1]
    # port = sys.argv[2]
    # app.run(host=host, port=port, debug=True)

    # 使用Manager管理flask對(duì)象
    manage = Manager(app)
    # 啟動(dòng)命令行: python hello.py runserver -h -p -d
    manage.run()

6.裝飾器
# 1.外層函數(shù)嵌套內(nèi)層函數(shù)
# 2.外層函數(shù)返回內(nèi)層函數(shù)
# 3.內(nèi)層函數(shù)使用外層函數(shù)傳遞的參數(shù)

# 裝飾器 兩層函數(shù)，外層調(diào)用內(nèi)層函數(shù)
# 內(nèi)測函數(shù)實(shí)現(xiàn)功能后調(diào)用原函數(shù) 返回原函數(shù)結(jié)果
from functools import wraps

from flask import request
from werkzeug.utils import redirect


def login_required(func):

    # func是被裝飾的函數(shù)
    @wraps(func)
    def check():
        token = request.cookies.get('token')
        if not token:
            return redirect('/login/')
        if token != '123456':
            return redirect('/login/')

        return func()


    return check