本日將完成從Line控制購物車品項，建立訂單，產生付款連結，通知付款人

替購物車加上送出訂單按鈕

傳送附帶按鈕的訊息，減少操作繁瑣，按鈕傳送一PostBackAction，通知伺服器執行產生訂單

# APIModel.py
def ShoppingCartTemp(cart_info_text):
    template_message = TemplateSendMessage(
        alt_text='Buttons alt text', template=ButtonsTemplate(
            text=cart_info_text, actions=[
            PostbackAction(label='點我下訂單', display_text='確認購物車OK，我要下訂單', data='action=buy')
        ]
    ))
    return template_message

# Server.py
if(data == 'action=ShowShoppingCartContents'):
    cart_info, cart_amount = dbpm.QUY_Shopping_Cart_info_by_uid(event.source.user_id)
    app.logger.debug(f"{prof.display_name} 查詢購物車, uid:{event.source.user_id}, {cart_info}")
    replay_text = '\n'.join(str(v) for v in cart_info) + f"\n總共:{cart_amount}元"
    template_msg = APIModel.ShoppingCartTemp(replay_text)
    line_bot_api.reply_message(
        event.reply_token, template_msg
    )

產生訂單

訂單產生完成後，將傳送付款網址給使用者，記得預留訂單產生失敗的錯誤處理

# Server.py
if(datapath == "action=ShowProductList"):
    .....
# 新增一PostEvent功能處理
elif(datapath == "action=buy"):
    isSucc, msg = Handler.MakeOrder(event.source.user_id)
    if(isSucc):
        template_msg = APIModel.OrderPayURLTemp(msg)
        line_bot_api.reply_message(
            event.reply_token,
            template_msg
        )
    else:
        line_bot_api.reply_message(
            event.reply_token,
            TextSendMessage(text=msg)
        )

# APIMode.py

# 付款按鈕
def OrderPayURLTemp(msg):
    template_message = TemplateSendMessage(
        alt_text='Buttons alt text', template=ButtonsTemplate(
        title='付款通知', text=f"訂單{msg.OrderNo}，總金額 {msg.Amount / 100}", actions=[
            URIAction(label='點我付款', uri=msg.CardParam.CardPayURL)
        ]
    ))
    return template_message

# OrderHandler.py
def MakeOrder(uid):
    scid = dbpm.INS_QUY_SC(uid)
    prodlist = []
    tot_price = 0
    shopping_list = dbpm.QUY_Shopping_Cart_by_scid(scid)
    if(not shopping_list):
        return False, "購物車內沒有商品喔"
    for prod in shopping_list:
        # print(f"商品:{prod[0]}, 數量:{prod[1]}")
        current_quantity = dbpm.QUY_Prod_Quantity_by_pid(prod[0])
        if(current_quantity - prod[1] < 0):
            dbpm.UPD_Cart_items(scid, prod[0], current_quantity)
            app.logger.error(f"商品{prod[0]}，庫存不足無法滿足訂單需求數量({prod[1]})")
            return False, "部分商品庫存不足，請稍後重試"
        else:
            new_quantity = current_quantity - prod[1]
            dbpm.UPD_Prod_Quantity(prod[0], new_quantity)
            product_name, product_price = dbpm.QUY_Prod_Name_and_Price_by_pid(prod[0])
            prodlist.append(f"{product_name} * {prod[1]}")
            tot_price = tot_price + product_price * prod[1]

    # 鎖定購物車 
    dbpm.UPD_Shopping_Cart_lock_bY_scid(True, scid)

    # 建立訂單
    oid = dbpm.INS_Order(os.environ['Me'], scid, ostatus="初始化訂單")

    # 建立信用卡付款交易編號
    paid = dbpm.INS_payment_req('C-1', tot_price)
    neworder = APIModel.ReqOrderCreate(ShopNo=os.environ['ShopNo'], OrderNo=oid, Amount=tot_price*100, \
        PrdtName='IT鐵人賽虛擬商店', ReturnURL=os.environ['ReturnURL'], BackendURL=os.environ['BackendURL'], PayType="C")
    msg = GenApi.OrderCreate(neworder)
    app.logger.debug(f"MakeOrder:{msg}")

    if(msg):
        if(msg.Status == 'S'):
            print(f"建立訂單: 編號:{msg.OrderNo}:{prodlist}, 請款金額 = {tot_price}, 付款ID:{paid}, {msg.Description}", {msg.CardParam.CardPayURL})
            dbpm.UPD_payment_bypaid(paid=paid, tsno=msg.TSNo, ts_decp=msg.Description, ts_status=True, cardpayurl=msg.CardParam.CardPayURL)
            dbpm.UPD_Order_by_oid(paid=paid, ostatus="已產生付款請求", oid=oid)
            return True, msg
        else:
            dbpm.UPD_payment_bypaid(paid=paid, tsno=msg.TSNo, ts_decp=msg.Description, ts_status=False)
            dbpm.UPD_Order_by_oid(paid=paid, ostatus="產生付款請求失敗", oid=oid)
            dbpm.UPD_Shopping_Cart_lock_bY_scid(False, scid)
    return False, "與金流系統通訊，建立訂單時發生錯誤"

付款後通知使用者

加上訂單付款後的處理

# OrderHandler.py

def OrderPayQueryHandler(resp:APIModel.ResOrderPayQuery, line_bot_api:LineBotApi):
    app.logger.debug(f"ResOrderPayQuery:{resp}")
    payinfo = resp.TSResultContent
    if(payinfo.Status != 'S'):
        dbpm.UPD_payment_bytsno(ispaid=False, paytoken=resp.PayToken, tsno=payinfo.TSNo, aptype=payinfo.APType)
        app.logger.info(f"訂單付款失敗, 訂單編號:{payinfo.OrderNo} - {resp.Description}")
        uid = dbpm.UPD_Order_status_by_oid(ostatus=f"付款失敗-{resp.Description}", oid = payinfo.OrderNo)
        line_bot_api.push_message(uid, TextSendMessage(text=f"您的訂單{payinfo.OrderNo}付款失敗，原因可能為:\n{resp.Description}"))
    else:
        dbpm.UPD_payment_bytsno(ispaid=True, paytoken=resp.PayToken, tsno=payinfo.TSNo, aptype=payinfo.APType)
        app.logger.info(f"訂單付款成功, 訂單編號:{payinfo.OrderNo} - {resp.Description}")
        uid = dbpm.UPD_Order_status_by_oid(ostatus=f"付款成功-{resp.Description}", oid = payinfo.OrderNo)
        line_bot_api.push_message(uid, TextSendMessage(text=f"您的訂單{payinfo.OrderNo}付款成功囉"))

訂單流程執行結果

明天做幾個小修正跟收尾，補充一點TODO