增加购买物品的接口

docs/api.md

@@ -420,6 +420,41 @@
 ```
 
 
+
+### 16. 购买物品
+
+1. Method:  POST
+2. URI:  /api/:accountid/hero/buyitem
+
+| 字段      | 说明   |
+| --------- | ------ |
+| accountid | 帐号id |
+
+> POST参数
+
+
+| 字段     | 说明                                   |
+| -------- | -------------------------------------- |
+| itemid |需要购买的物品id                        |
+|count|购买数量|
+
+3. Response: JSON
+
+```js
+{
+    "itemid": 1002, //道具id
+    "buynum": 1, //道具数量
+    "totalnum": 100, //购买成功后总数量
+    "priceid": 21231, // 使用代币的id
+    "pricenum": 20		// 使用代币数量
+  }
+```
+
+
+
+
+
+
 ## 三. 服务端接口列表
 
 ### 1. 上传对战记录(服务端调用)

src/controllers/AccountController.ts

@@ -143,9 +143,31 @@ export default class AccountController extends BaseController {
 
   @router('post /api/:accountid/buyitem')
   async buyItem(req: any) {
-    let {itemid, count} = req.params
-
-    return {}
+    let { itemid, count, accountid } = req.params
+    let pinfo = ItemCtrl.getItemPrice(itemid << 0)
+    if (pinfo.id == 0) {
+      throw new ZError(10, 'item can`t buy')
+    }
+    let record = await BagItem.findOne({
+      accountid,
+      itemid: pinfo.id
+    })
+    if (!record || record.count < pinfo.count * count) {
+      throw new ZError(11, 'not enough money')
+    }
+    record.count -= pinfo.count * count
+    let newItem = (await BagItem.findOrCreate({ accountid, itemid }))
+      .doc
+    newItem.count += count
+    await newItem.save()
+    await record.save()
+    return {
+      itemid,
+      buynum: count,
+      totalnum: newItem.count,
+      priceid: pinfo.id,
+      pricenum: pinfo.count
+    }
   }
 
 }