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學習軌道

練習

REST API

中等

說明

實作一個 RESTful API 來追蹤 IOU。

四位室友常常互相借錢，卻老是記不清誰欠誰多少錢。

你的任務是實作一個簡單的 RESTful API，它會透過 POST 請求接收 IOU，並能透過 GET 請求提供指定的摘要資訊。

API 規格

使用者物件

{
  "name": "Adam",
  "owes": {
    "Bob": 12.0,
    "Chuck": 4.0,
    "Dan": 9.5
  },
  "owed_by": {
    "Bob": 6.5,
    "Dan": 2.75
  },
  "balance": "<(total owed by other users) - (total owed to other users)>"
}

方法

說明	HTTP 方法	URL	酬載格式	無酬載的回應	含酬載的回應
列出使用者資訊	GET	/users	`{"users":["Adam","Bob"]}`	`{"users":<List of all User objects>}`	`{"users":<List of User objects for <users> (sorted by name)}`
建立使用者	POST	/add	`{"user":<name of new user (unique)>}`	N/A	`<User object for new user>`
建立 IOU	POST	/iou	`{"lender":<name of lender>,"borrower":<name of borrower>,"amount":5.25}`	N/A	`{"users":<updated User objects for <lender> and <borrower> (sorted by name)>}`